CN111427134B - Optical imaging lens group - Google Patents
Optical imaging lens group Download PDFInfo
- Publication number
- CN111427134B CN111427134B CN202010453552.3A CN202010453552A CN111427134B CN 111427134 B CN111427134 B CN 111427134B CN 202010453552 A CN202010453552 A CN 202010453552A CN 111427134 B CN111427134 B CN 111427134B
- Authority
- CN
- China
- Prior art keywords
- lens
- optical imaging
- lens group
- imaging lens
- ltoreq
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012634 optical imaging Methods 0.000 title claims abstract description 215
- 230000003287 optical effect Effects 0.000 claims abstract description 75
- 238000003384 imaging method Methods 0.000 claims abstract description 61
- 238000000926 separation method Methods 0.000 claims description 7
- 230000004075 alteration Effects 0.000 description 48
- 238000010586 diagram Methods 0.000 description 13
- 201000009310 astigmatism Diseases 0.000 description 12
- 238000012545 processing Methods 0.000 description 6
- 206010010071 Coma Diseases 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
本申请公开了一种光学成像透镜组，其沿着光轴由物侧至像侧依序包括：具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜、第八透镜和第九透镜。第四透镜具有负光焦度，其像侧面为凹面；第五透镜的像侧面为凸面；第八透镜具有正光焦度；以及第一透镜的物侧面至光学成像透镜组的成像面在光轴上距离TTL、光学成像透镜组的有效像素区域的对角线长的一半ImgH以及光学成像透镜组的F数Fno满足：Fno×TTL/ImgH＜2.5。
The present application discloses an optical imaging lens group, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens with optical power. The fourth lens has negative optical power, and its image side surface is a concave surface; the image side surface of the fifth lens is a convex surface; the eighth lens has positive optical power; and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens group on the optical axis, half of the diagonal length of the effective pixel area of the optical imaging lens group ImgH, and the F number Fno of the optical imaging lens group satisfy: Fno×TTL/ImgH＜2.5.
Description
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens group.
Background
In recent years, with the rapid development of portable electronic products such as smartphones, competition among brands of portable electronic products such as smartphones has been becoming white-hot. Large brands invest significant amounts of time and money in product innovation in order to enhance their own product appeal, and even without the remaining effort. As one of the core functions of portable electronic products such as smart phones, the camera has an increasingly significant trend toward characteristics such as high pixel, large aperture, and large image plane. Therefore, there is a need for designing a lens of a portable electronic product such as a smart phone with higher image quality, larger aperture and larger image surface to adapt to the development of the market.
In theory, various aberrations can be balanced by increasing the number of lenses of the lens, so that the imaging quality of the lens is greatly improved, and a larger aperture and image plane are obtained. However, if the number of lenses of the lens is increased without limitation, the size of the lens is definitely increased, which is contrary to the trend of pursuing ultra-thin portable electronic products such as smartphones.
Therefore, how to design a lens with higher imaging quality and capable of matching with a sensor with higher pixels and stronger image processing technology while the lens size remains unchanged or even smaller is one of the problems that needs to be solved by various large brands at present.
Disclosure of Invention
An aspect of the present application provides an optical imaging lens group including, in order from an object side to an image side along an optical axis, a first lens having optical power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The fourth lens element has a negative refractive power, the image-side surface of the fourth lens element is concave, the image-side surface of the fifth lens element is convex, the eighth lens element has a positive refractive power, and the object-side surface of the first lens element is separated from the image-side surface of the optical image-forming lens assembly by a distance TTL on the optical axis, half of the diagonal length of the effective pixel region of the optical image-forming lens assembly is ImgH, and the F number FNo of the optical image-forming lens assembly satisfies Fno×TTL/ImgH <2.5.
In one embodiment, at least one aspherical mirror surface is present in the object side surface of the first lens element to the image side surface of the ninth lens element.
In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens may satisfy-2 < f5/f6< -1.2.
In one embodiment, the effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens group may satisfy f4/f < -1.
In one embodiment, the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R10 of the image side of the fifth lens may satisfy-2 < (R8-R10)/(R8 + R10) < -1.
In one embodiment, the image side of the eighth lens element is concave, and the radius of curvature R16 of the image side of the eighth lens element and the effective focal length f8 of the eighth lens element can satisfy 0< R16/f8<0.5.
In one embodiment, the combined focal length f56 of the fifth lens and the sixth lens and the total effective focal length f of the optical imaging lens group may satisfy f56/f < -5.
In one embodiment, the combined focal length f78 of the seventh lens and the eighth lens and the total effective focal length f of the optical imaging lens group may satisfy 0.9< f78/f <1.5.
In one embodiment, the center thickness CT4 of the fourth lens on the optical axis and the separation distance T45 of the fourth lens and the fifth lens on the optical axis may satisfy 0.3< CT4/T45<0.8.
In one embodiment, the center thickness CT7 of the seventh lens on the optical axis and the center thickness CT8 of the eighth lens on the optical axis may satisfy 0.7< CT7/CT8<1.2.
In one embodiment, the center thickness CT6 of the sixth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, and the center thickness CT8 of the eighth lens on the optical axis may satisfy 0.5< CT6×2/(CT7+CT8) <1.
In one embodiment, the separation distance T23 of the second lens and the third lens on the optical axis, the separation distance T34 of the third lens and the fourth lens on the optical axis, and the distance Tr3r8 of the object side surface of the second lens to the image side surface of the fourth lens on the optical axis may satisfy 0<10× (T23+T34)/Tr 3r8<1.
In one embodiment, the center thickness CT4 of the fourth lens on the optical axis and the edge thickness ET4 of the fourth lens may satisfy 0.2< CT4/ET4<0.8.
In one embodiment, the center thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens may satisfy 2< CT5/ET5<4.
In one embodiment, the interval distance SAG42 between the intersection point of the image side surface of the fourth lens and the optical axis and the effective radius vertex of the image side surface of the fourth lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis can satisfy 1< SAG42/CT4<2.
In one embodiment, the maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT21 of the object-side surface of the second lens may satisfy 1< DT11/DT21<1.5.
Another aspect of the present application provides an optical imaging lens group including, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens having optical power. The fourth lens element has a negative refractive power, the image-side surface of the fourth lens element is concave, the image-side surface of the fifth lens element is convex, the eighth lens element has a positive refractive power, and the distance T23 between the second lens element and the third lens element, the distance T34 between the third lens element and the fourth lens element, and the distance Tr3r8 between the object-side surface of the second lens element and the image-side surface of the fourth lens element, satisfy 0<10× (T23+T34)/Tr 3r8<1.
The application provides an optical imaging lens group which is applicable to portable electronic products and has ultra-thin and good imaging quality through reasonably distributing focal power and optimizing optical parameters.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
Fig. 1 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 1 of the present application;
Fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 1;
fig. 3 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 2;
fig. 5 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 3;
Fig. 7 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 4 of the present application;
Fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 4;
Fig. 9 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 5 of the present application;
Fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 5;
fig. 11 shows a schematic structural view of an optical imaging lens group according to embodiment 6 of the present application;
Fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 6;
Fig. 13 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 7;
FIG. 15 is a schematic view showing the structure of an optical imaging lens group according to embodiment 8 of the present application, and
Fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens group of embodiment 8.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region, and if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens group according to an exemplary embodiment of the present application may include nine lenses having optical power, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens, respectively. The nine lenses are arranged in order from the object side to the image side along the optical axis. Any two adjacent lenses among the first lens to the ninth lens can have a spacing distance therebetween.
In an exemplary embodiment, the first lens may have positive or negative power, the second lens may have positive or negative power, the third lens may have positive or negative power, the fourth lens may have negative power, the image side surface of which may be concave, the fifth lens may have positive or negative power, the image side surface of which may be convex, the sixth lens may have positive or negative power, the seventh lens may have positive or negative power, the eighth lens may have positive or negative power, and the ninth lens may have positive or negative power.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy fno×ttl/ImgH <2.5, where TTL is an on-optical axis distance from an object side surface of the first lens to an imaging surface of the optical imaging lens group, imgH is a half of a diagonal length of an effective pixel region of the optical imaging lens group, and Fno is an F number of the optical imaging lens group. The Fno multiplied by TTL/ImgH is smaller than 2.5, the total size of the optical imaging lens group can be effectively reduced while a larger image surface is obtained, a larger aperture is obtained, and the characteristics of ultra-thin, large aperture, large image surface and the like of the optical imaging lens group are facilitated.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy-2 < f5/f6< -1.2, where f5 is an effective focal length of the fifth lens and f6 is an effective focal length of the sixth lens. More specifically, f5 and f6 may further satisfy-1.6 < f5/f6< -1.2. Satisfying-2 < f5/f6< -1.2, can effectively reduce aberration of the whole system, reduce sensitivity of the system, and can avoid manufacturability loss caused by overlarge focal power difference of the fifth lens and the sixth lens.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy f4/f < -1 > where f4 is an effective focal length of the fourth lens and f is a total effective focal length of the optical imaging lens group. More specifically, f4 and f may further satisfy-10 < f4/f < -1. Satisfying f4/f < -1, aberration of the whole system can be effectively reduced, and meanwhile, influence of the process performance of the fourth lens caused by excessive concentration of optical power on the fourth lens can be avoided.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy-2 < (R8-R10)/(R8+R10) < -1, where R8 is a radius of curvature of an image side of the fourth lens and R10 is a radius of curvature of an image side of the fifth lens. More specifically, R8 and R10 may further satisfy-2 < (R8-R10)/(R8+R10) < -1.2. Satisfies-2 < (R8-R10)/(R8+R10) < -1, can effectively correct chromatic aberration of the optical imaging lens group, realizes balance of various aberrations, and can effectively reduce the size of the optical imaging lens group, so that the optical power of the optical imaging lens group is reasonably distributed.
In an exemplary embodiment, the image side surface of the eighth lens may be concave. And the optical imaging lens group according to the present application may satisfy 0< R16/f8<0.5, where R16 is a radius of curvature of an image side surface of the eighth lens, and f8 is an effective focal length of the eighth lens. More specifically, R16 and f8 may further satisfy 0.2< R16/f8<0.5. The image side surface of the eighth lens is concave and satisfies 0< R16/f8<0.5, so that astigmatism and coma of the eighth lens can be controlled in a reasonable range, astigmatism and coma left by the front lens can be effectively balanced, the lens group has better imaging quality, and manufacturability of an eighth lens image can be ensured.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy f56/f < -5 > wherein f56 is a combined focal length of the fifth lens and the sixth lens, and f is a total effective focal length of the optical imaging lens group. More specifically, f56 and f may further satisfy f56/f < -5.2. The structure can meet f56/f < -5 > and can be matched with other lenses to further enhance the correction of high-order complex aberration on the basis of reducing three-level aberration such as spherical aberration, coma aberration, field curvature and the like, and in addition, the structure can also increase the aperture, enhance the light flux of an optical system, enhance the brightness of an image plane and improve the image quality.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 0.9< f78/f <1.5, where f78 is a combined focal length of the seventh lens and the eighth lens, and f is a total effective focal length of the optical imaging lens group. More specifically, f78 and f may further satisfy 1< f78/f <1.3. Satisfying 0.9< f78/f <1.5, can make the lens group keep ultra-thin characteristic, can effectively avoid system focal power to concentrate on seventh lens and eighth lens excessively, cooperate the combination focus of fifth lens and sixth lens simultaneously, can make the system aberration obtain better correction, can effectively balance the aberration.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 0.3< ct4/T45<0.8, where CT4 is a center thickness of the fourth lens on the optical axis and T45 is a separation distance of the fourth lens and the fifth lens on the optical axis. More specifically, CT4 and T45 may further satisfy 0.4< CT4/T45<0.8. Satisfies 0.3< CT4/T45<0.8, is favorable for ultrathin system, ensures that the fourth lens and the fifth lens are distributed more reasonably, can reduce the ghost image risk brought by the image side surface of the fourth lens, and can avoid the difficulty in processing caused by the over-thinness of the fourth lens.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 0.7< ct7/CT8<1.2, where CT7 is a center thickness of the seventh lens on the optical axis and CT8 is a center thickness of the eighth lens on the optical axis. Satisfying 0.7< ct7/CT8<1.2, the optical imaging lens group can be made to better balance the aberration of the optical imaging lens group, and the problem of difficulty in processing due to the excessive thinness of the seventh lens and the eighth lens can be effectively avoided, and the optical imaging lens group can be reduced in size so as to maintain the ultra-thin characteristics.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 0.5< ct6x2/(ct7+ct8) <1, where CT6 is a center thickness of the sixth lens on the optical axis, CT7 is a center thickness of the seventh lens on the optical axis, and CT8 is a center thickness of the eighth lens on the optical axis. Satisfying 0.5< ct6x2/(CT 7+ CT 8) <1, the problem of difficulty in processing due to excessive thinness of the sixth lens, seventh lens, and eighth lens can be effectively avoided, the size of the optical imaging lens group can be reduced, the ultra-thin characteristics can be maintained, and the optical imaging lens group can be better balanced in aberrations.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 0<10× (t23+t34)/Tr 3r8<1, where T23 is a distance on the optical axis between the second lens and the third lens, T34 is a distance on the optical axis between the third lens and the fourth lens, and Tr3r8 is a distance on the optical axis between the object side surface of the second lens and the image side surface of the fourth lens. More specifically, T23, T34, and Tr3r8 may further satisfy 0.4<10× (T23+T34)/Tr3r8 <1. Satisfying 0<10× (T23+T34)/Tr3r8 <1, effectively weakening the ghost image risk brought by the second lens, the third lens and the fourth lens, enabling the structure among the second lens, the third lens and the fourth lens to be more compact, being beneficial to reducing the system size and enabling the optical imaging lens group to be easier to keep ultrathin.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 0.2< ct4/ET4<0.8, where CT4 is a center thickness of the fourth lens on the optical axis and ET4 is an edge thickness of the fourth lens. More specifically, CT4 and ET4 may further satisfy 0.3< CT4/ET4<0.7. Satisfying 0.2< CT4/ET4<0.8, the system size can be reduced, and the system distortion influence quantity can be balanced while good processability is maintained.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 2< ct5/ET5<4, where CT5 is a center thickness of the fifth lens on the optical axis, and ET5 is an edge thickness of the fifth lens. More specifically, CT5 and ET5 may further satisfy 2.2< CT5/ET5<3.4. Satisfying 2< CT5/ET5<4, the system size can be reduced, and the system distortion influence quantity can be balanced while good processability is maintained.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 1< SAG42/CT4<2, where SAG42 is a distance between an intersection point of an image side surface of the fourth lens and an optical axis to an effective radius vertex of the image side surface of the fourth lens on the optical axis, and CT4 is a center thickness of the fourth lens on the optical axis. More specifically, SAG42 and CT4 may further satisfy 1.1< SAG42/CT4<1.7. Satisfying 1< SAG42/CT4<2, can make light have certain divergence function when passing through the image side of the fourth lens, is helpful to obtain larger image plane on the premise of ensuring system image quality, satisfies SAG42/CT4<2, and can avoid processing difficulties caused by overlarge SAG 42.
In an exemplary embodiment, the optical imaging lens group according to the present application may satisfy 1< DT11/DT21<1.5, where DT11 is the maximum effective radius of the object side of the first lens and DT21 is the maximum effective radius of the object side of the second lens. More specifically, DT11 and DT21 may further satisfy 1< DT11/DT21<1.3. Satisfying 1< D11/DT 21<1.5, the light flux of the optical imaging lens group can be effectively increased to promote the relative illuminance of the system, especially the marginal view field, so that the system still has good imaging quality in the environment with darker light, and the optical imaging lens group has higher practicability due to the improvement of the process processability of the first lens and the second lens.
In an exemplary embodiment, the optical imaging lens group according to the present application further includes a stop disposed between the first lens and the second lens or between the second lens and the third lens. Optionally, the optical imaging lens group may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface. The application provides an optical imaging lens group with the characteristics of miniaturization, large image surface, large aperture, ultra-thin performance, high imaging quality and the like. The optical imaging lens group according to the above embodiment of the present application may employ a plurality of lenses, for example, the above nine lenses. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, incident light rays can be effectively converged, the optical total length of the imaging lens is reduced, and the processability of the imaging lens is improved, so that the optical imaging lens group is more beneficial to production and processing.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the ninth lens is an aspherical mirror. The aspherical lens is characterized in that the curvature is continuously changed from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, and the ninth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens and the ninth lens are aspherical mirror surfaces.
However, those skilled in the art will appreciate that the number of lenses making up an optical imaging lens group may be varied to achieve the various results and advantages described in this specification without departing from the scope of the application as claimed. For example, although the description has been made by taking nine lenses as an example in the embodiment, the optical imaging lens group is not limited to include nine lenses. The optical imaging lens group may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens group applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens group according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens group sequentially comprises a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21 from an object side to an image side.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, wherein an object-side surface S17 thereof is convex and an image-side surface S18 thereof is concave. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
Table 1 shows the basic parameter table of the optical imaging lens group of example 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In this example, the total effective focal length F of the optical imaging lens group is 5.66mm, the total length TTL of the optical imaging lens group (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S21 of the optical imaging lens group) is 7.60mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S21 of the optical imaging lens group is 5.80mm, the maximum field angle FOV of the optical imaging lens group is 89.5 °, and the F-number Fno of the optical imaging lens group is 1.70.
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the ninth lens E9 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Where x is the distance vector height of the aspherical surface at a position h in the optical axis direction from the apex of the aspherical surface, c is the paraxial curvature of the aspherical surface, c=1/R (i.e., paraxial curvature c is the reciprocal of the radius of curvature R in table 1 above), k is a conic coefficient, and Ai is the correction coefficient of the i-th order of the aspherical surface. The following Table 2 shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16、A18 and A 20 that can be used for each of the aspherical mirrors S1-S18 in example 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.6632E-02 | -2.2749E-03 | 8.3243E-04 | -6.7474E-04 | 6.3481E-04 | -3.0314E-04 | 9.2435E-05 | -1.6306E-05 | 1.2201E-06 |
| S2 | -2.6665E-02 | 4.5783E-04 | -7.7423E-04 | 4.8047E-03 | -4.6048E-03 | 2.4293E-03 | -7.4801E-04 | 1.2550E-04 | -8.7700E-06 |
| S3 | -1.2470E-02 | -3.4257E-03 | 1.8309E-03 | -1.9505E-03 | 1.9423E-03 | -1.2920E-03 | 4.6268E-04 | -7.7172E-05 | 4.5872E-06 |
| S4 | -6.4394E-03 | 1.5306E-02 | -4.8823E-02 | 5.1171E-02 | -3.2150E-02 | 1.3631E-02 | -3.8295E-03 | 6.4265E-04 | -4.8257E-05 |
| S5 | -1.4615E-02 | 1.9671E-02 | -4.0046E-02 | 3.6417E-02 | -1.8602E-02 | 6.2779E-03 | -1.4771E-03 | 2.2359E-04 | -1.6110E-05 |
| S6 | 1.1883E-02 | -3.3862E-02 | 2.9699E-02 | -1.8914E-02 | 8.1718E-03 | -2.1968E-03 | 2.9648E-04 | -3.0469E-06 | -2.5483E-06 |
| S7 | -1.0311E-03 | -2.8340E-02 | 2.2243E-02 | -1.1834E-02 | 4.1904E-03 | -9.6141E-04 | 1.6480E-04 | -2.1489E-05 | 1.4137E-06 |
| S8 | -2.5793E-02 | 9.0760E-03 | -1.0312E-02 | 9.7805E-03 | -6.0041E-03 | 2.3620E-03 | -5.6595E-04 | 7.5307E-05 | -4.2709E-06 |
| S9 | -1.3221E-02 | 5.5884E-03 | -5.2299E-03 | 3.7727E-03 | -2.1211E-03 | 9.0217E-04 | -2.6631E-04 | 4.4976E-05 | -3.1368E-06 |
| S10 | -3.4751E-02 | 2.1975E-02 | -1.8969E-02 | 1.2824E-02 | -6.5918E-03 | 2.3044E-03 | -5.0083E-04 | 6.0270E-05 | -3.0352E-06 |
| S11 | -5.3013E-02 | 3.4195E-02 | -1.0920E-02 | 2.3087E-03 | -8.1684E-04 | 3.3867E-04 | -7.5958E-05 | 8.1181E-06 | -3.3374E-07 |
| S12 | -7.4286E-02 | 4.3504E-02 | -2.2060E-02 | 1.0271E-02 | -3.7362E-03 | 9.1453E-04 | -1.3562E-04 | 1.0905E-05 | -3.6456E-07 |
| S13 | -3.2162E-02 | 3.8023E-02 | -2.8232E-02 | 1.2038E-02 | -3.2558E-03 | 5.5841E-04 | -5.9009E-05 | 3.5101E-06 | -8.9779E-08 |
| S14 | -8.5700E-03 | 2.2534E-02 | -1.7086E-02 | 6.5592E-03 | -1.5407E-03 | 2.2378E-04 | -1.9395E-05 | 9.1678E-07 | -1.8192E-08 |
| S15 | 1.6438E-02 | -2.2029E-02 | 7.0038E-03 | -1.4236E-03 | 1.5898E-04 | -7.1529E-06 | -1.6221E-07 | 2.5910E-08 | -6.4846E-10 |
| S16 | 4.8015E-02 | -3.6268E-02 | 1.1809E-02 | -2.5740E-03 | 3.6733E-04 | -3.3334E-05 | 1.8419E-06 | -5.6146E-08 | 7.1913E-10 |
| S17 | -8.9327E-02 | 8.3184E-03 | 5.0989E-04 | -2.2730E-04 | 3.0513E-05 | -2.3139E-06 | 1.0312E-07 | -2.5046E-09 | 2.5556E-11 |
| S18 | -1.0944E-01 | 2.5640E-02 | -4.6949E-03 | 6.0279E-04 | -5.1909E-05 | 2.9330E-06 | -1.0477E-07 | 2.1536E-09 | -1.9438E-11 |
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 1, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens group of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows distortion curves of the optical imaging lens group of embodiment 1, which represent distortion magnitude values corresponding to different image heights. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens set provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens group according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens group sequentially includes, from an object side to an image side, a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, wherein an object-side surface S17 thereof is convex and an image-side surface S18 thereof is concave. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
In this example, the total effective focal length F of the optical imaging lens group is 5.57mm, the total length TTL of the optical imaging lens group is 7.55mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 5.60mm, the maximum field angle FOV of the optical imaging lens group is 88.4 °, and the F-number Fno of the optical imaging lens group is 1.71.
Table 3 shows the basic parameter table of the optical imaging lens group of example 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
TABLE 4 Table 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 2, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens group of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens group of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens group provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens group according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens group sequentially includes, from an object side to an image side, a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
In this example, the total effective focal length F of the optical imaging lens group is 5.88mm, the total length TTL of the optical imaging lens group is 7.60mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 5.60mm, the maximum field angle FOV of the optical imaging lens group is 87.4 °, and the F-number Fno of the optical imaging lens group is 1.75.
Table 5 shows the basic parameter table of the optical imaging lens group of example 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 6 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 5
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 3, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens group of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens group of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens group provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens group according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens group includes, in order from an object side to an image side, a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, wherein an object-side surface S17 thereof is convex and an image-side surface S18 thereof is concave. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
In this example, the total effective focal length F of the optical imaging lens group is 5.60mm, the total length TTL of the optical imaging lens group is 7.50mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 5.55mm, the maximum field angle FOV of the optical imaging lens group is 84.2 °, and the F-number Fno of the optical imaging lens group is 1.72.
Table 7 shows the basic parameter table of the optical imaging lens group of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 7
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 4, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens group of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens group of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens group provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens group according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens group includes, in order from an object side to an image side, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, wherein an object-side surface S17 thereof is convex and an image-side surface S18 thereof is concave. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
In this example, the total effective focal length F of the optical imaging lens group is 6.00mm, the total length TTL of the optical imaging lens group is 7.80mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 5.60mm, the maximum field angle FOV of the optical imaging lens group is 84.7 °, and the F-number Fno of the optical imaging lens group is 1.69.
Table 9 shows the basic parameter table of the optical imaging lens group of example 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 9
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.1343E-02 | 2.8218E-04 | -2.4265E-03 | 2.6407E-03 | -1.5618E-03 | 5.8670E-04 | -1.3309E-04 | 1.6386E-05 | -8.3196E-07 |
| S2 | -2.8564E-02 | -4.0076E-03 | 1.0547E-02 | -7.3097E-03 | 3.7487E-03 | -1.4053E-03 | 3.4821E-04 | -5.0455E-05 | 3.2631E-06 |
| S3 | -1.9817E-02 | -2.5337E-03 | 2.8837E-03 | 1.8249E-03 | -3.0338E-03 | 1.6161E-03 | -4.8881E-04 | 8.4598E-05 | -6.2544E-06 |
| S4 | -8.6889E-03 | -4.1080E-03 | -7.4073E-03 | 1.2840E-02 | -8.6535E-03 | 3.2916E-03 | -7.6380E-04 | 1.0515E-04 | -6.6206E-06 |
| S5 | -2.5495E-03 | -3.9477E-07 | -1.4482E-02 | 1.9324E-02 | -1.1583E-02 | 4.0185E-03 | -8.3587E-04 | 9.6522E-05 | -4.7497E-06 |
| S6 | 3.3842E-03 | -2.1283E-03 | -1.4787E-02 | 2.0147E-02 | -1.2933E-02 | 4.6392E-03 | -9.3531E-04 | 9.4872E-05 | -3.1947E-06 |
| S7 | -2.2267E-02 | 1.6441E-02 | -2.8112E-02 | 3.2426E-02 | -2.2598E-02 | 9.6609E-03 | -2.5019E-03 | 3.6578E-04 | -2.3387E-05 |
| S8 | -3.6452E-02 | 2.0679E-02 | -2.0519E-02 | 1.9563E-02 | -1.3435E-02 | 6.1224E-03 | -1.7543E-03 | 2.8842E-04 | -2.0708E-05 |
| S9 | -7.0933E-03 | -8.8155E-03 | 1.3541E-02 | -1.8603E-02 | 1.5060E-02 | -7.6370E-03 | 2.3384E-03 | -3.9806E-04 | 2.9264E-05 |
| S10 | -1.6568E-02 | -6.1947E-03 | 5.4874E-03 | -5.2346E-03 | 2.5056E-03 | -6.3028E-04 | 7.7530E-05 | -3.3418E-06 | 0.0000E+00 |
| S11 | -3.4048E-02 | 9.0251E-03 | 3.3198E-03 | -5.6482E-03 | 3.3971E-03 | -1.0462E-03 | 1.7657E-04 | -1.5661E-05 | 5.7225E-07 |
| S12 | -6.1222E-02 | 1.9811E-02 | -4.6712E-03 | 4.7411E-04 | 4.3894E-04 | -2.2684E-04 | 4.7110E-05 | -4.6705E-06 | 1.8145E-07 |
| S13 | -2.2957E-02 | 1.3605E-02 | -1.2703E-02 | 6.6050E-03 | -2.2786E-03 | 5.0955E-04 | -7.0461E-05 | 5.4288E-06 | -1.7624E-07 |
| S14 | -1.9806E-04 | 6.3438E-03 | -5.4357E-03 | 1.8976E-03 | -4.2993E-04 | 6.4687E-05 | -5.9255E-06 | 2.9123E-07 | -5.7918E-09 |
| S15 | -1.1504E-02 | -1.2215E-02 | 4.0642E-03 | -4.3300E-04 | -7.7718E-05 | 2.9128E-05 | -3.6350E-06 | 2.1311E-07 | -4.9214E-09 |
| S16 | 1.8930E-02 | -2.6536E-02 | 9.6624E-03 | -2.1549E-03 | 3.0850E-04 | -2.8070E-05 | 1.5464E-06 | -4.5954E-08 | 5.4413E-10 |
| S17 | -5.8735E-02 | 1.0282E-02 | -1.5329E-03 | 2.1925E-04 | -2.1621E-05 | 1.3006E-06 | -4.5775E-08 | 8.6655E-10 | -6.8069E-12 |
| S18 | -6.4904E-02 | 1.4990E-02 | -2.8152E-03 | 3.8657E-04 | -3.6851E-05 | 2.3472E-06 | -9.4754E-08 | 2.1819E-09 | -2.1723E-11 |
Table 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 5, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens group of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens group of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens group provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens group according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens group includes, in order from an object side to an image side, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, wherein an object-side surface S17 thereof is convex and an image-side surface S18 thereof is concave. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
In this example, the total effective focal length F of the optical imaging lens group is 5.86mm, the total length TTL of the optical imaging lens group is 7.60mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 5.60mm, the maximum field angle FOV of the optical imaging lens group is 86.2 °, and the F-number Fno of the optical imaging lens group is 1.69.
Table 11 shows the basic parameter table of the optical imaging lens group of example 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.0587E-02 | -3.5201E-03 | 3.2671E-03 | -2.5643E-03 | 1.2888E-03 | -3.5691E-04 | 5.2952E-05 | -3.7973E-06 | 9.8521E-08 |
| S2 | -2.9154E-02 | -5.1156E-03 | 1.2934E-02 | -1.0084E-02 | 5.8671E-03 | -2.3873E-03 | 6.1537E-04 | -9.0226E-05 | 5.7933E-06 |
| S3 | -1.9741E-02 | -1.8119E-03 | 1.5782E-03 | 3.2253E-03 | -4.1675E-03 | 2.2911E-03 | -7.4953E-04 | 1.3973E-04 | -1.0974E-05 |
| S4 | -9.1290E-03 | 1.5767E-03 | -2.3267E-02 | 2.9248E-02 | -1.7197E-02 | 5.4948E-03 | -9.1595E-04 | 5.9690E-05 | 9.7264E-07 |
| S5 | -2.2754E-03 | 3.4418E-03 | -2.7706E-02 | 3.5564E-02 | -2.1662E-02 | 7.6045E-03 | -1.5801E-03 | 1.8049E-04 | -8.7338E-06 |
| S6 | 9.6942E-04 | 6.1026E-03 | -3.4175E-02 | 4.6952E-02 | -3.5370E-02 | 1.6110E-02 | -4.4500E-03 | 6.8863E-04 | -4.5678E-05 |
| S7 | -2.1716E-02 | 1.2577E-02 | -2.0279E-02 | 2.3166E-02 | -1.6074E-02 | 6.8112E-03 | -1.7411E-03 | 2.5419E-04 | -1.6709E-05 |
| S8 | -3.6282E-02 | 1.9945E-02 | -2.0027E-02 | 1.9863E-02 | -1.4250E-02 | 6.7696E-03 | -2.0073E-03 | 3.3876E-04 | -2.4800E-05 |
| S9 | -7.6575E-03 | -4.2532E-03 | 1.9582E-03 | -2.8167E-03 | 2.4357E-03 | -1.5029E-03 | 5.5257E-04 | -1.1208E-04 | 9.9483E-06 |
| S10 | -1.5604E-02 | -3.6325E-03 | 1.5855E-03 | -2.2690E-03 | 1.1668E-03 | -2.5065E-04 | 5.0156E-06 | 5.9072E-06 | -5.7947E-07 |
| S11 | -3.5048E-02 | 1.3675E-02 | -2.8865E-03 | -1.2244E-03 | 1.5111E-03 | -5.5299E-04 | 9.9505E-05 | -9.0927E-06 | 3.3810E-07 |
| S12 | -6.2212E-02 | 2.1537E-02 | -7.0452E-03 | 1.8528E-03 | 4.6695E-05 | -1.7348E-04 | 4.5398E-05 | -5.0015E-06 | 2.0772E-07 |
| S13 | -2.3679E-02 | 1.6514E-02 | -1.5650E-02 | 7.9740E-03 | -2.6595E-03 | 5.8139E-04 | -8.0061E-05 | 6.2409E-06 | -2.0702E-07 |
| S14 | -6.4541E-03 | 1.5653E-02 | -1.1750E-02 | 4.2550E-03 | -9.5770E-04 | 1.3747E-04 | -1.1970E-05 | 5.6751E-07 | -1.1105E-08 |
| S15 | -1.3434E-02 | -1.2019E-02 | 4.0527E-03 | -4.0988E-04 | -9.9341E-05 | 3.5870E-05 | -4.6074E-06 | 2.8059E-07 | -6.7489E-09 |
| S16 | 1.9693E-02 | -2.8046E-02 | 1.0376E-02 | -2.3342E-03 | 3.3461E-04 | -3.0197E-05 | 1.6290E-06 | -4.6467E-08 | 5.0690E-10 |
| S17 | -5.9536E-02 | 1.0377E-02 | -1.4109E-03 | 1.8518E-04 | -1.7472E-05 | 1.0176E-06 | -3.4484E-08 | 6.1855E-10 | -4.4669E-12 |
| S18 | -6.5993E-02 | 1.5349E-02 | -2.7931E-03 | 3.6796E-04 | -3.4047E-05 | 2.1358E-06 | -8.5852E-08 | 1.9826E-09 | -1.9879E-11 |
Table 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 6, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens group of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens group of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens group provided in embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens group according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens group includes, in order from an object side to an image side, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, wherein an object-side surface S17 thereof is convex and an image-side surface S18 thereof is concave. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
In this example, the total effective focal length F of the optical imaging lens group is 5.82mm, the total length TTL of the optical imaging lens group is 7.56mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 5.55mm, the maximum field angle FOV of the optical imaging lens group is 84.5 °, and the F-number Fno of the optical imaging lens group is 1.68.
Table 13 shows the basic parameter table of the optical imaging lens group of example 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 13
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.2033E-02 | -5.9152E-04 | -5.7619E-04 | 4.2125E-04 | -6.5086E-05 | 2.4017E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -3.3273E-02 | 3.0546E-03 | 2.8068E-03 | -1.0151E-03 | 1.7857E-04 | -1.5706E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -2.1362E-02 | 1.3417E-03 | 2.1889E-03 | -1.2806E-03 | 1.8489E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.9138E-02 | 1.3906E-02 | -1.9365E-02 | 1.2802E-02 | -4.3528E-03 | 7.3694E-04 | -4.6504E-05 | 0.0000E+00 | 0.0000E+00 |
| S5 | -6.5887E-03 | 9.7681E-03 | -1.4626E-02 | 1.0317E-02 | -3.1526E-03 | 3.4764E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -8.7049E-03 | 1.8351E-03 | -3.3434E-03 | 2.3890E-03 | -9.6703E-04 | 1.4515E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.7885E-02 | -9.0861E-04 | 2.0821E-03 | -8.7695E-04 | 1.9048E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -2.2298E-02 | -1.1253E-03 | 3.3358E-03 | -1.3358E-03 | 3.0034E-04 | -1.5900E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -8.9766E-03 | 2.2654E-03 | -6.8312E-03 | 4.4220E-03 | -1.6338E-03 | 2.2243E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -2.1996E-02 | 9.9391E-03 | -8.9223E-03 | 3.1046E-03 | -6.0079E-04 | 5.2754E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -5.0249E-02 | 3.2258E-02 | -2.0837E-02 | 1.0688E-02 | -4.7581E-03 | 1.8151E-03 | -4.7137E-04 | 6.8734E-05 | -4.2690E-06 |
| S12 | -6.0927E-02 | 2.8086E-02 | -1.3302E-02 | 4.4846E-03 | -7.0972E-04 | 4.4148E-06 | 1.4334E-05 | -1.8328E-06 | 7.3612E-08 |
| S13 | -1.8982E-02 | 1.3221E-02 | -1.2851E-02 | 6.6881E-03 | -2.3704E-03 | 5.5356E-04 | -7.9638E-05 | 6.3142E-06 | -2.0918E-07 |
| S14 | -4.6499E-03 | 7.5425E-03 | -4.1137E-03 | 7.9235E-04 | -7.0136E-05 | 2.8260E-06 | -3.9406E-08 | 0.0000E+00 | 0.0000E+00 |
| S15 | -1.4122E-02 | -9.8236E-03 | 2.5432E-03 | 1.3571E-04 | -2.0283E-04 | 4.4825E-05 | -4.6817E-06 | 2.4459E-07 | -5.1655E-09 |
| S16 | 1.8567E-02 | -2.5446E-02 | 8.7655E-03 | -1.7916E-03 | 2.2687E-04 | -1.7512E-05 | 7.7352E-07 | -1.6611E-08 | 1.0359E-10 |
| S17 | -5.6975E-02 | 8.6531E-03 | -7.3231E-04 | 5.5711E-05 | -4.0170E-06 | 2.0930E-07 | -6.4694E-09 | 1.0005E-10 | -5.2358E-13 |
| S18 | -6.4030E-02 | 1.3188E-02 | -2.1111E-03 | 2.4440E-04 | -1.9461E-05 | 1.0165E-06 | -3.2817E-08 | 5.8996E-10 | -4.5091E-12 |
TABLE 14
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 7, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens group of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens group of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens group provided in embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens group according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural view of an optical imaging lens group according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens group includes, in order from an object side to an image side, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The eighth lens element E8 has positive refractive power, and its object-side surface S15 is convex and its image-side surface S16 is concave. The ninth lens element E9 has negative refractive power, wherein an object-side surface S17 thereof is convex and an image-side surface S18 thereof is concave. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.
In this example, the total effective focal length F of the optical imaging lens group is 5.92mm, the total length TTL of the optical imaging lens group is 7.75mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 5.60mm, the maximum field angle FOV of the optical imaging lens group is 85.5 °, and the F-number Fno of the optical imaging lens group is 1.67.
Table 15 shows a basic parameter table of the optical imaging lens group of example 8, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 16 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 15
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.0943E-02 | -5.8051E-04 | -8.0766E-04 | 6.1393E-04 | -1.3556E-04 | 1.1021E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -2.7864E-02 | -6.5425E-03 | 1.2316E-02 | -6.7138E-03 | 2.1806E-03 | -4.0570E-04 | 3.2734E-05 | 0.0000E+00 | 0.0000E+00 |
| S3 | -1.9694E-02 | -2.5372E-03 | 2.8271E-03 | 1.9544E-03 | -3.1859E-03 | 1.7148E-03 | -5.2508E-04 | 9.1623E-05 | -6.8121E-06 |
| S4 | -7.1373E-03 | -1.3029E-02 | 1.1776E-02 | -9.2231E-03 | 6.2641E-03 | -2.8447E-03 | 7.5128E-04 | -1.0189E-04 | 5.4604E-06 |
| S5 | -1.0070E-03 | -9.1607E-03 | 3.3334E-03 | 1.0945E-03 | -3.6963E-04 | -2.2373E-04 | 1.2422E-04 | -2.2359E-05 | 1.4345E-06 |
| S6 | 5.2459E-03 | -1.3693E-02 | 8.6269E-03 | -3.3072E-03 | 5.7088E-04 | -2.7934E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.9168E-02 | 5.9513E-04 | 4.9188E-03 | -3.8335E-03 | 1.1621E-03 | -1.1612E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -3.6127E-02 | 1.9444E-02 | -1.9450E-02 | 2.0571E-02 | -1.5602E-02 | 7.5586E-03 | -2.2159E-03 | 3.6105E-04 | -2.5128E-05 |
| S9 | -5.0211E-03 | -1.7803E-02 | 2.9763E-02 | -3.6152E-02 | 2.7261E-02 | -1.3033E-02 | 3.7957E-03 | -6.1609E-04 | 4.3047E-05 |
| S10 | -1.3020E-02 | -1.1387E-02 | 1.1076E-02 | -8.7533E-03 | 3.9395E-03 | -9.9321E-04 | 1.2600E-04 | -5.2401E-06 | -1.2557E-07 |
| S11 | -3.1780E-02 | 5.3948E-03 | 5.8365E-03 | -6.4378E-03 | 3.4373E-03 | -1.0006E-03 | 1.6293E-04 | -1.4073E-05 | 5.0350E-07 |
| S12 | -6.0661E-02 | 1.7745E-02 | -2.6426E-03 | -5.1591E-04 | 6.8760E-04 | -2.5263E-04 | 4.6201E-05 | -4.2756E-06 | 1.5929E-07 |
| S13 | -2.5614E-02 | 1.3805E-02 | -1.1943E-02 | 6.1377E-03 | -2.0895E-03 | 4.5721E-04 | -6.1628E-05 | 4.6343E-06 | -1.4734E-07 |
| S14 | 4.2247E-03 | 3.4227E-03 | -5.0818E-03 | 2.2518E-03 | -6.0570E-04 | 1.0063E-04 | -9.6991E-06 | 4.8912E-07 | -9.8430E-09 |
| S15 | -4.8371E-03 | -1.6868E-02 | 6.2421E-03 | -1.2127E-03 | 1.0990E-04 | 7.8952E-07 | -1.0645E-06 | 8.5537E-08 | -2.2694E-09 |
| S16 | 1.8389E-02 | -2.6206E-02 | 9.5610E-03 | -2.1471E-03 | 3.1163E-04 | -2.8991E-05 | 1.6526E-06 | -5.1807E-08 | 6.7113E-10 |
| S17 | -5.7883E-02 | 9.9894E-03 | -1.4388E-03 | 1.9737E-04 | -1.8824E-05 | 1.1017E-06 | -3.7842E-08 | 7.0019E-10 | -5.3782E-12 |
| S18 | -6.1862E-02 | 1.3375E-02 | -2.2468E-03 | 2.6969E-04 | -2.2394E-05 | 1.2553E-06 | -4.5501E-08 | 9.6418E-10 | -9.0447E-12 |
Table 16
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 8, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 16B shows an astigmatism curve of the optical imaging lens group of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the optical imaging lens group of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens group provided in embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 each satisfy the relationship shown in table 17.
TABLE 17
The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the above-described optical imaging lens group.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (19)
1. The optical imaging lens group sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens which have optical power from an object side to an image side along an optical axis,
The first lens has positive focal power, and the object side surface of the first lens is a convex surface;
The focal power distribution of the second lens and the third lens is positive, positive or negative, wherein the object side surfaces of the second lens and the third lens are convex;
the fourth lens has negative focal power, the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface;
The fifth lens has positive focal power, and the image side surface of the fifth lens is a convex surface;
the sixth lens has negative focal power, and the object side surface of the sixth lens is a concave surface;
the seventh lens has positive focal power, and the object side surface of the seventh lens is a convex surface;
the eighth lens has positive focal power, the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface;
the ninth lens has negative focal power, and the image side surface of the ninth lens is a concave surface;
the number of lenses with focal power in the optical imaging lens group is nine;
The object side surface of the first lens is separated from the imaging surface of the optical imaging lens group by a distance TTL on the optical axis, half of the diagonal length ImgH of the effective pixel area of the optical imaging lens group and the F number FNo of the optical imaging lens group are 2.23-2.38, and
The center thickness CT4 of the fourth lens on the optical axis and the interval distance T45 of the fourth lens and the fifth lens on the optical axis satisfy 0.4< CT4/T45<0.8.
2. The optical imaging lens group according to claim 1, wherein an effective focal length f5 of the fifth lens and an effective focal length f6 of the sixth lens satisfy-1.54.ltoreq.f5/f6.ltoreq.1.30.
3. The optical imaging lens group as claimed in claim 1, wherein an effective focal length f4 of the fourth lens and a total effective focal length f of the optical imaging lens group satisfy-6.10.ltoreq.f4/f.ltoreq.1.46.
4. The optical imaging lens group according to claim 1, wherein a radius of curvature R8 of an image side surface of the fourth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy-2 < (R8-R10)/(R8+R10) < -1.2.
5. The optical imaging lens assembly of claim 1, wherein an image side surface of said eighth lens element is concave,
And the curvature radius R16 of the image side surface of the eighth lens and the effective focal length f8 of the eighth lens are 0.28-0.16/f 8-0.40.
6. The optical imaging lens group as claimed in claim 1, wherein a combined focal length f56 of the fifth lens and the sixth lens and a total effective focal length f of the optical imaging lens group satisfy-10.79.ltoreq.f56/f < -5.2.
7. The optical imaging lens group of claim 1, wherein a combined focal length f78 of the seventh lens and the eighth lens and a total effective focal length f of the optical imaging lens group satisfy 1< f78/f <1.3.
8. The optical imaging lens group according to claim 1, wherein a center thickness CT7 of the seventh lens on the optical axis and a center thickness CT8 of the eighth lens on the optical axis satisfy 0.74.ltoreq.CT 7/CT 8.ltoreq.1.09.
9. The optical imaging lens group according to claim 1, wherein a center thickness CT6 of the sixth lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, and a center thickness CT8 of the eighth lens on the optical axis satisfy 0.58.ltoreq.CT6X2/(CT7+CT8). Ltoreq.0.89.
10. The optical imaging lens group according to claim 1, wherein a separation distance T23 of the second lens and the third lens on the optical axis, a separation distance T34 of the third lens and the fourth lens on the optical axis, and a distance Tr3r8 of an object side surface of the second lens to an image side surface of the fourth lens on the optical axis satisfy 0.46 +.10× (t23+t34)/Tr 3r8<0.88.
11. The optical imaging lens group according to claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis and an edge thickness ET4 of the fourth lens satisfy 0.38.ltoreq.CT 4/ET 4.ltoreq.0.64.
12. The optical imaging lens group according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy 2.2< ct5/ET5<3.4.
13. The optical imaging lens group according to claim 1, wherein a spacing distance SAG42 between an intersection point of an image side surface of the fourth lens and the optical axis and an effective radius vertex of the image side surface of the fourth lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy 1.2.ltoreq.SAG 42/CT 4.ltoreq.1.66.
14. The optical imaging lens assembly of claim 1, wherein a maximum effective radius DT11 of an object side of the first lens and a maximum effective radius DT21 of an object side of the second lens satisfy 1.11.ltoreq.DT 11/DT 21.ltoreq.1.20.
15. The optical imaging lens group according to claim 1, wherein a radius of curvature R8 of an image side surface of the fourth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy-1.93.ltoreq.R 8-R10)/(R8+R10). Ltoreq.1.23.
16. The optical imaging lens group as recited in claim 1, wherein a combined focal length f56 of the fifth lens and the sixth lens and a total effective focal length f of the optical imaging lens group satisfy-10.79. Ltoreq.f56/f.ltoreq.5.24.
17. The optical imaging lens group according to claim 1, wherein a combined focal length f78 of the seventh lens and the eighth lens and a total effective focal length f of the optical imaging lens group satisfy 1.02.ltoreq.f78/f.ltoreq.1.21.
18. The optical imaging lens group according to claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy 0.45.ltoreq.CT 4/T45.ltoreq.0.72.
19. The optical imaging lens group according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy 2.23.ltoreq.CT 5/ET 5.ltoreq.3.33.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010453552.3A CN111427134B (en) | 2020-05-26 | 2020-05-26 | Optical imaging lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010453552.3A CN111427134B (en) | 2020-05-26 | 2020-05-26 | Optical imaging lens group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111427134A CN111427134A (en) | 2020-07-17 |
| CN111427134B true CN111427134B (en) | 2024-11-29 |
Family
ID=71553076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010453552.3A Active CN111427134B (en) | 2020-05-26 | 2020-05-26 | Optical imaging lens group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111427134B (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI745057B (en) * | 2020-08-28 | 2021-11-01 | 大立光電股份有限公司 | Optical image lens assembly, image capturing unit and electronic device |
| CN111766685B (en) * | 2020-09-03 | 2020-11-17 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
| CN111766686B (en) * | 2020-09-03 | 2020-11-24 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
| CN111812809B (en) * | 2020-09-03 | 2020-11-27 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
| CN111766687B (en) * | 2020-09-03 | 2020-11-13 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
| CN111812816B (en) * | 2020-09-08 | 2020-11-27 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
| CN111812818B (en) * | 2020-09-08 | 2020-11-27 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
| CN111929831B (en) * | 2020-09-09 | 2020-12-11 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111929834B (en) * | 2020-09-09 | 2020-12-18 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111929835B (en) * | 2020-09-09 | 2020-12-18 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111929832B (en) | 2020-09-09 | 2020-12-15 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111929839B (en) | 2020-09-15 | 2020-12-11 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111812822B (en) * | 2020-09-15 | 2020-11-27 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111929838B (en) * | 2020-09-15 | 2020-12-25 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111812823B (en) * | 2020-09-15 | 2020-11-27 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111812825B (en) * | 2020-09-15 | 2020-11-27 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111913285B (en) * | 2020-09-29 | 2020-12-15 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN111929853B (en) * | 2020-10-12 | 2020-12-18 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| CN112014953B (en) * | 2020-10-13 | 2021-01-01 | 瑞泰光学(常州)有限公司 | Image pickup optical lens |
| KR102549012B1 (en) * | 2020-11-30 | 2023-06-28 | 삼성전기주식회사 | Optical imaging system |
| CN112505888A (en) * | 2020-12-09 | 2021-03-16 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| KR20220089919A (en) * | 2020-12-22 | 2022-06-29 | 엘지이노텍 주식회사 | Optical system |
| CN113917658B (en) * | 2021-10-09 | 2023-09-26 | 浙江舜宇光学有限公司 | Optical imaging lens group |
| CN115047605B (en) * | 2022-07-05 | 2024-01-19 | 湖北准视光电科技有限公司 | Imaging lens |
| CN115047601B (en) * | 2022-07-21 | 2024-03-29 | 嘉兴中润光学科技股份有限公司 | Ultra-large aperture telescope objective lens and imaging device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212364690U (en) * | 2020-05-26 | 2021-01-15 | 浙江舜宇光学有限公司 | Optical imaging lens group |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203311089U (en) * | 2013-06-26 | 2013-11-27 | 东莞市宇瞳光学科技有限公司 | Double-component optical compensation monitor lens |
| JP6237106B2 (en) * | 2013-10-18 | 2017-11-29 | コニカミノルタ株式会社 | Zoom lens and imaging device |
| TWI691751B (en) * | 2019-06-14 | 2020-04-21 | 大立光電股份有限公司 | Optical photographing lens assembly, image capturing unit and electronic device |
-
2020
- 2020-05-26 CN CN202010453552.3A patent/CN111427134B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212364690U (en) * | 2020-05-26 | 2021-01-15 | 浙江舜宇光学有限公司 | Optical imaging lens group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111427134A (en) | 2020-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111427134B (en) | Optical imaging lens group | |
| CN110554485B (en) | Optical imaging lens | |
| CN110554484B (en) | Optical imaging system | |
| CN110007444B (en) | Optical imaging lens | |
| CN108681040B (en) | Optical imaging lens group | |
| CN110456481B (en) | Optical imaging lens | |
| CN107703608B (en) | Optical imaging lens | |
| CN110471164B (en) | Optical imaging lens | |
| CN108469669B (en) | Image pickup lens | |
| CN108508581B (en) | Optical imaging system | |
| CN114047607B (en) | Optical imaging lens | |
| CN113985572B (en) | Image pickup lens group | |
| CN110133829B (en) | Optical imaging lens | |
| CN108490587B (en) | Imaging lens | |
| CN112180563B (en) | Optical imaging lens | |
| CN110609376B (en) | Optical imaging lens | |
| CN112180566A (en) | Optical imaging lens | |
| CN111208627A (en) | Camera lens group | |
| CN110687665B (en) | Image pickup lens group | |
| CN211086759U (en) | Optical imaging lens | |
| CN211857037U (en) | Image pickup lens assembly | |
| CN110579864B (en) | Optical imaging lens | |
| CN113514932B (en) | Optical imaging lens | |
| CN212364690U (en) | Optical imaging lens group | |
| CN111190268B (en) | Camera lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |