CN107976787B - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN107976787B CN107976787B CN201810001739.2A CN201810001739A CN107976787B CN 107976787 B CN107976787 B CN 107976787B CN 201810001739 A CN201810001739 A CN 201810001739A CN 107976787 B CN107976787 B CN 107976787B
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- 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
- G02B13/004—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 four lenses
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- 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
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Abstract
The application discloses optical imaging lens, this camera lens includes in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens has positive focal power, and the object side surface of the first lens is a convex surface; the second lens has positive focal power or negative focal power, the object side surface is a concave surface, and the image side surface is a convex surface; the third lens has positive focal power, the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the fourth lens has positive optical power or negative optical power. The effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens meet the condition that f1/f is smaller than 1.2 and smaller than 1.8.
Description
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including four lenses.
Background
In recent years, with the rapid development of depth recognition technology, three-dimensional depth cameras are increasingly widely used in AR enhancement technology. The principle of the structured light scheme serving as one of the main flow directions of the depth recognition technology is that: projecting a special image (coding pattern or dot matrix image) onto the target object by the projection lens module; receiving image information reflected from the target object using an imaging receiving module; and processing the received image information through a back-end algorithm to obtain the depth information of the target object. As one of the core elements of the structured light depth recognition technology, the optical performance of the imaging receiving lens will greatly affect the accuracy of depth recognition.
Therefore, there is a need for an optical imaging lens with small aberrations, high resolution characteristics that can be used as an imaging receiving lens in depth recognition applications.
Disclosure of Invention
The present application provides an optical imaging lens that may be used as an imaging receiving lens in depth recognition applications that may at least address or partially address at least one of the above-mentioned shortcomings of the prior art.
In one aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens can meet the condition that f1/f is smaller than 1.2 and smaller than 1.8.
In one embodiment, the optical imaging lens may further include an infrared band pass filter disposed between the fourth lens and the imaging surface of the optical imaging lens, a band pass wavelength λ of the infrared band pass filter may float based on a use light source wavelength, and a long-wavelength cut-off wavelength of the band pass wavelength λ may be 0nm to 30nm longer than a longest wavelength of the use light source wavelength and a short-wavelength cut-off wavelength of the band pass wavelength λ may be 0nm to 30nm shorter than a shortest wavelength of the use light source wavelength when a transmittance of the band pass wavelength λ is greater than 50%.
In one embodiment, the radius of curvature R1 of the object side surface of the first lens and the total effective focal length f of the optical imaging lens may satisfy 0.3 < R1/f < 0.7.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the effective focal length f1 of the first lens may satisfy 0.3 < R1/f1 < 0.6.
In one embodiment, the maximum effective half-caliber DT11 of the object side surface of the first lens and the center thickness CT1 of the first lens on the optical axis may satisfy 1.7 < DT11/CT1 < 2.2.
In one embodiment, a distance TTL between a sum of center thicknesses of the first lens element, the second lens element, the third lens element and the fourth lens element on an optical axis and an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis may satisfy 0.2 < ΣCT/TTL < 0.5.
In one embodiment, the interval distance T12 between the first lens and the second lens on the optical axis and the interval distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis may satisfy 0.1 < T12/TTL < 0.2.
In one embodiment, the separation distance T34 of the third lens and the fourth lens on the optical axis and the separation distance T23 of the second lens and the third lens on the optical axis can satisfy T34/T23 < 0.2.
In one embodiment, the center thickness CT2 of the second lens element and the center thickness CT3 of the third lens element may satisfy 0.4 < CT2/CT3 < 0.7.
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 1.2 < CT4/ET4 < 2.4.
In one embodiment, the maximum effective half-caliber DT11 of the object side of the first lens and the maximum effective half-caliber DT21 of the object side of the second lens may satisfy 1.0.ltoreq.DT 11/DT21 < 1.3.
In one embodiment, the maximum effective half-caliber DT11 of the object side of the first lens and the maximum effective half-caliber DT22 of the image side of the second lens may satisfy 0.8 < DT11/DT22 < 1.1.
In one embodiment, the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens may satisfy 0.9 < R5/R6 < 1.3.
In one embodiment, the distance SAG31 between the intersection point of the object side surface of the third lens and the optical axis and the maximum effective half-caliber vertex of the object side surface of the third lens on the optical axis and the center thickness CT3 of the third lens on the optical axis can satisfy-1.3 < SAG31/CT3 < -0.7.
In one embodiment, the maximum effective half-aperture DT42 of the image side of the fourth lens and half of the diagonal length ImgH of the effective pixel area of the photosensitive element on the imaging surface of the optical imaging lens may satisfy 0.7 < DT42/ImgH < 1.
In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy f/EPD.ltoreq.2.1.
In another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The center thickness CT2 of the second lens on the optical axis and the center thickness CT3 of the third lens on the optical axis can satisfy 0.4 < CT2/CT3 < 0.7.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The optical imaging lens may further include an infrared band pass filter disposed between the fourth lens and an imaging surface of the optical imaging lens, a band pass wavelength λ of the infrared band pass filter may be floated based on a use light source wavelength, and a long wavelength cut-off wavelength of the band pass wavelength λ may be 0nm to 30nm longer than a longest wavelength of the use light source wavelength and a short wavelength cut-off wavelength of the band pass wavelength λ may be 0nm to 30nm shorter than a shortest wavelength of the use light source wavelength when a transmittance of the band pass wavelength λ is greater than 50%.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can meet the requirement that f/EPD is less than or equal to 2.1.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The maximum effective half caliber DT42 of the image side of the fourth lens and half ImgH of the diagonal length of the effective pixel area of the photosensitive element on the imaging surface of the optical imaging lens can meet the conditions that DT42/ImgH is smaller than 1 and smaller than 0.7.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The distance SAG31 between the intersection point of the object side surface of the third lens and the optical axis and the maximum effective half-caliber vertex of the object side surface of the third lens on the optical axis and the central thickness CT3 of the third lens on the optical axis can meet the condition that SAG31/CT3 is less than-1.3 and less than-0.7.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The center thickness CT4 of the fourth lens on the optical axis and the edge thickness ET4 of the fourth lens can satisfy CT4/ET4 of 1.2 < 2.4.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The maximum effective half caliber DT11 of the object side surface of the first lens and the maximum effective half caliber DT21 of the object side surface of the second lens can satisfy that DT11/DT21 is less than or equal to 1.0 and less than or equal to 1.3.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The maximum effective half-caliber DT11 of the object side surface of the first lens and the maximum effective half-caliber DT22 of the image side surface of the second lens can satisfy 0.8 < DT11/DT22 < 1.1.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The maximum effective half caliber DT11 of the object side surface of the first lens and the center thickness CT1 of the first lens on the optical axis can satisfy 1.7 < DT11/CT1 < 2.2.
In yet another aspect, the present application discloses an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power. The distance T34 between the third lens and the fourth lens on the optical axis and the distance T23 between the second lens and the third lens on the optical axis can meet the requirement that T34/T23 is less than 0.2.
The optical imaging lens has at least one beneficial effect of miniaturization, small aberration, high resolution and the like 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 a plurality of (for example, four) lenses. Moreover, the optical imaging lens with the configuration can better meet the requirement of an imaging receiving lens in depth identification application.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A and 2B show a distortion curve and a relative illuminance curve of the optical imaging lens of embodiment 1, respectively;
fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A and 4B show a distortion curve and a relative illuminance curve of the optical imaging lens of embodiment 2, respectively;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A and 6B show a distortion curve and a relative illuminance curve of the optical imaging lens of embodiment 3, respectively;
Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A and 8B show a distortion curve and a relative illuminance curve of the optical imaging lens of embodiment 4, respectively;
fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application;
fig. 10A and 10B show a distortion curve and a relative illuminance curve of the optical imaging lens of embodiment 5, respectively;
fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 12A and 12B show a distortion curve and a relative illuminance curve of the optical imaging lens of embodiment 6, respectively.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are 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, then the lens surface is convex at least in the paraxial region; 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 surface, and the surface of each lens closest to the imaging surface is referred to as the image side surface.
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 present application, use of "may" means "one or more embodiments of the present 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, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application includes, for example, four lenses having optical power, i.e., a first lens, a second lens, a third lens, and a fourth lens. The four lenses are arranged in order from the object side to the image side along the optical axis. The optical imaging lens may further include a photosensitive element disposed on the imaging surface.
In an exemplary embodiment, the first lens may have positive optical power, and its object-side surface may be convex; the second lens has positive focal power or negative focal power, the object side surface of the second lens can be a concave surface, and the image side surface of the second lens can be a convex surface; the third lens element may have positive refractive power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be convex; the fourth lens has positive optical power or negative optical power.
In an exemplary embodiment, the optical imaging lens of the present application may further include an infrared band pass filter disposed between the fourth lens and the imaging surface of the optical imaging lens, a band pass wavelength λ of the infrared band pass filter may be floated based on a use light source wavelength, and a long wavelength cut-off wavelength of the band pass wavelength λ is 0nm to 30nm longer than a longest wavelength of the use light source wavelength and a short wavelength cut-off wavelength of the band pass wavelength λ is 0nm to 30nm shorter than a shortest wavelength of the use light source wavelength when a transmittance of the band pass wavelength λ is greater than 50%. Such an arrangement is advantageous in realizing small aberrations, high resolution, and the like. The use wave band of the imaging lens according to the application can be infrared laser single wavelength and has narrower bandwidth, which is different from the use wave band of a general lens.
When the optical power and the surface concave-convex arrangement of each lens are consistent with the combination of the optical power and the surface concave-convex arrangement, each mirror surface in the imaging lens can uniformly share the function of aberration correction, thereby effectively correcting spherical aberration, coma, curvature of field, astigmatism and other aberrations. In particular, such an arrangement can provide a good correction effect for edge light convergence (e.g., a good correction effect for edge light convergence of a large-aperture narrow-band optical system), thereby enabling the lens to satisfy a high resolution requirement. Meanwhile, the imaging lens arranged according to the above can have good imaging quality in a certain narrow-band low-pass infrared band.
In an exemplary embodiment, the object-side surface of the fourth lens may be convex, and the image-side surface may be concave.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.2 < f1/f < 1.8, where f1 is an effective focal length of the first lens and f is a total effective focal length of the optical imaging lens. More specifically, f1 and f may further satisfy 1.20 < f1/f < 1.50, for example, 1.29.ltoreq.f1/f.ltoreq.1.42. The effective focal length of the first lens is reasonably configured, so that the spherical aberration of the lens can be effectively corrected, and high imaging quality is ensured.
In an exemplary embodiment, the optical imaging lens can satisfy the condition that f/EPD is equal to or less than 2.1, wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD may further satisfy 1.65.ltoreq.f/EPD.ltoreq.1.99. The conditional expression f/EPD is less than or equal to 2.1, so that the lens has larger light incoming quantity in unit time, and the high brightness requirement of the received image is met.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.7 < DT42/ImgH < 1, where DT42 is the maximum effective half-caliber of the image side surface of the fourth lens, and ImgH is half of the diagonal length of the effective pixel region of the photosensitive element on the imaging surface of the optical imaging lens. More specifically, DT42 and ImgH may further satisfy 0.78.ltoreq.DT 42/ImgH.ltoreq.0.94. Satisfies the condition that DT42/ImgH is less than 1 and 0.7, is favorable for meeting the miniaturization requirement, and simultaneously ensures higher relative brightness.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.9 < R5/R6 < 1.3, where R5 is a radius of curvature of an object side surface of the third lens and R6 is a radius of curvature of an image side surface of the third lens. More specifically, R5 and R6 may further satisfy 0.95.ltoreq.R5/R6.ltoreq.1.29. By reasonably controlling the bending direction and the bending degree of the object side surface and the image side surface of the third lens, the curvature of field aberration of the imaging system can be effectively corrected, and the image quality balance of the central view field area and the edge view field area is ensured.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of-1.3 < SAG31/CT3 < -0.7, where SAG31 is a distance between an intersection point of an object side surface of the third lens and an optical axis and a maximum effective half-caliber vertex of the object side surface of the third lens on the optical axis, and CT3 is a center thickness of the third lens on the optical axis. More specifically, SAG31 and CT3 can further satisfy-1.23.ltoreq.SAG 31/CT 3.ltoreq.0.80. The spherical aberration of the imaging lens can be corrected when the SAG31/CT3 < -0.7 is satisfied, so that higher imaging quality is obtained; meanwhile, the sensitivity of the system of the lens can be effectively reduced, and the lens is guaranteed to have good mass production.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition of 1.2 < CT4/ET4 < 2.4, 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 1.29.ltoreq.CT 4/ET 4.ltoreq.2.36. The condition that CT4/ET4 is smaller than 1.2 and smaller than 2.4 is satisfied, and the reasonable proportion of the center thickness and the edge thickness of the lens of the fourth lens is ensured, so that the edge view field is very favorable for obtaining larger beam quantity, and the lens has higher relative brightness.
In an exemplary embodiment, the optical imaging lens can satisfy the condition that DT11/DT21 is less than or equal to 1.0 and less than or equal to 1.3, wherein DT11 is the maximum effective half-caliber of the object side surface of the first lens and DT21 is the maximum effective half-caliber of the object side surface of the second lens. More specifically, DT11 and DT21 may further satisfy 1.0. Ltoreq.DT 11/DT21 < 1.2, e.g., 1.04. Ltoreq.DT 11/DT 21. Ltoreq.1.14. Satisfies the condition that DT11/DT21 is less than or equal to 1.0 and less than 1.3, is beneficial to lens assembly and ensures the producibility of the lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.8 < DT11/DT22 < 1.1, where DT11 is the maximum effective half-caliber of the object side surface of the first lens element and DT22 is the maximum effective half-caliber of the image side surface of the second lens element. More specifically, DT11 and DT22 may further satisfy 0.8 < DT11/DT22 < 1.0, e.g., 0.83. Ltoreq.DT 11/DT 22. Ltoreq.0.94. Satisfies the condition that DT11/DT22 is less than 1.1 and is favorable for keeping the outer diameter of each lens in a uniform increasing gradient, thereby being favorable for lens assembly and ensuring the processability of the lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.4 < CT2/CT3 < 0.7, where CT2 is the center thickness of the second lens element on the optical axis, and CT3 is the center thickness of the third lens element on the optical axis. More specifically, CT2 and CT3 may further satisfy 0.5 < CT2/CT3 < 0.7, for example, 0.53. Ltoreq.CT2/CT 3. Ltoreq.0.64. The condition that CT2/CT3 is smaller than 0.7 and 0.4 is satisfied, thereby being beneficial to better correcting the field curvature aberration in the meridian direction; meanwhile, astigmatic aberration of the imaging system can be effectively controlled, so that higher imaging quality is obtained.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.1 < T12/TTL < 0.2, where T12 is a distance between the first lens element and the second lens element on the optical axis, and TTL is a distance between the object side surface of the first lens element and the imaging surface of the optical imaging lens element on the optical axis. More specifically, T12 and TTL can further satisfy 0.13.ltoreq.T12/TTL.ltoreq.0.14. Satisfies the condition that T12/TTL is smaller than 0.1 and smaller than 0.2, and can better eliminate the coma aberration of the imaging system and obtain higher imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.7 < DT11/CT1 < 2.2, where DT11 is the maximum effective half-caliber of the object side surface of the first lens, and CT1 is the center thickness of the first lens on the optical axis. More specifically, DT11 and CT1 may further satisfy 1.74.ltoreq.DT 11/CT 1.ltoreq.2.02. Satisfies the condition that DT11/CT1 is less than 2.2 and 1.7, can better eliminate the spherical aberration of the imaging system and obtain higher imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that T34/T23 < 0.2, where T34 is a distance between the third lens and the fourth lens on the optical axis, and T23 is a distance between the second lens and the third lens on the optical axis. More specifically, T34 and T23 may further satisfy 0.09.ltoreq.T34/T23.ltoreq.0.17. The air interval among the second lens, the third lens and the fourth lens is reasonably arranged, so that the second lens and the third lens can reasonably share the spherical aberration correction, and a high-quality imaging effect is obtained.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression of 0.2 < Σct/TTL < 0.5, where Σct is a sum of thicknesses of centers of the first lens element, the second lens element, the third lens element and the fourth lens element on an optical axis, and TTL is a distance between an object side surface of the first lens element and an imaging surface of the optical imaging lens element on the optical axis. More specifically, sigma CT and TTL may further satisfy 0.3 < SigmaCT/TTL < 0.5, e.g., 0.38 Sigma CT/TTL < 0.46. Satisfying the condition that 0.2 < ΣCT/TTL < 0.5, can better correct the aberration in the off-axis visual field area of the imaging system, and simultaneously is favorable for making each lens have better processability.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3 < R1/f < 0.7, where R1 is a radius of curvature of an object side surface of the first lens, and f is a total effective focal length of the optical imaging lens. More specifically, R1 and f may further satisfy 0.5 < R1/f < 0.6, for example, 0.52.ltoreq.R1/f.ltoreq.0.59. The condition that R1/f is smaller than 0.7 and 0.3 is satisfied, the aberration of the system off-axis view field area can be corrected well, and the high resolution of the center view field area is ensured; meanwhile, the lens diaphragm is favorable for obtaining a larger lens diaphragm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3 < R1/f1 < 0.6, where R1 is a radius of curvature of an object side surface of the first lens, and f1 is an effective focal length of the first lens. More specifically, R1 and f1 may further satisfy 0.3 < R1/f1 < 0.5, for example, 0.39.ltoreq.R1/f 1.ltoreq.0.42. The spherical aberration of the imaging system can be well corrected by satisfying the condition that R1/f1 is smaller than 0.6 and 0.3, and the imaging effect with high quality is favorably obtained.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm to improve the imaging quality of the lens. The diaphragm may be disposed at an arbitrary position as needed, for example, the diaphragm may be disposed between the object side and the first lens, or the diaphragm may also be disposed between the first lens and the second lens.
Optionally, the optical imaging lens may further include a protective glass for protecting the photosensitive element located on the imaging surface.
The optical imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, for example, four lenses as described above. 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, the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the processability of the imaging lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for small electronic equipment. Meanwhile, the optical imaging lens with the configuration has the beneficial effects of small aberration, high resolution and the like, and can well meet the requirements of the imaging receiving lens in depth identification application.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously 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.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although four lenses are described as an example in the embodiment, the optical imaging lens is not limited to include four lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2B. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an optical imaging lens according to an exemplary embodiment of the present application may sequentially include, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.
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 negative refractive power, wherein an object-side surface S3 thereof is concave 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 concave, 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 filter E5 may be an infrared band pass filter having an object side surface S9 and an image side surface S10. The bandpass wavelength lambda of the filter E5 may float based on the use light source wavelength, and when the transmittance of the bandpass wavelength lambda is greater than 50%, the long-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
Table 1 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 1
As can be seen from table 1, the object side surface and the image side surface of any one of the first lens element E1 to the fourth lens element E4 are aspheric. In the present embodiment, the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1-S8 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 And A 16 。
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 5.4245E-03 | -1.0041E-01 | 1.2427E+00 | -5.8561E+00 | 1.2857E+01 | -1.3611E+01 | 5.3755E+00 |
| S2 | -6.2944E-02 | 2.0953E-02 | -1.6610E+00 | 9.0631E+00 | -2.5445E+01 | 3.4154E+01 | -1.8264E+01 |
| S3 | -1.5221E-01 | -7.4008E-01 | 1.6603E+00 | -5.4391E+00 | 1.4329E+01 | -2.6241E+01 | 2.0370E+01 |
| S4 | -3.0623E-02 | -2.1759E-01 | -2.0148E+00 | 8.9557E+00 | -1.7477E+01 | 1.6545E+01 | -5.9010E+00 |
| S5 | 7.2130E-01 | -2.0229E+00 | 3.3343E+00 | -3.9645E+00 | 5.6109E+00 | -5.1050E+00 | 1.7554E+00 |
| S6 | -1.3583E-01 | -9.1099E-01 | 4.0056E+00 | -9.5078E+00 | 1.2635E+01 | -8.2627E+00 | 2.0973E+00 |
| S7 | -4.6117E-01 | 4.6443E-01 | -3.8262E-01 | 2.2156E-01 | -8.1472E-02 | 1.6596E-02 | -1.3960E-03 |
| S8 | -1.0127E-01 | 2.2482E-02 | 1.1127E-02 | -1.7628E-02 | 8.9352E-03 | -2.2018E-03 | 2.1299E-04 |
TABLE 2
Table 3 shows effective focal lengths f1 to f4 of the respective lenses in embodiment 1, a total effective focal length f of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region of the photosensitive element on the imaging surface.
| Parameters (parameters) | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f(mm) | ImgH(mm) |
| Numerical value | 3.72 | -12062.21 | 4.35 | -13.65 | 2.70 | 2.27 |
TABLE 3 Table 3
The optical imaging lens in embodiment 1 satisfies:
f1/f=1.38, where f1 is the effective focal length of the first lens E1, and f is the total effective focal length of the optical imaging lens;
f/EPD = 1.70, where f is the total effective focal length of the optical imaging lens, EPD is the entrance pupil diameter of the optical imaging lens;
DT 42/imgh=0.78, where DT42 is the maximum effective half-caliber of the image side surface S8 of the fourth lens element E4, imgH is half the diagonal length of the effective pixel area of the photosensitive element on the imaging surface S11;
r5/r6=1.08, where R5 is a radius of curvature of the object-side surface S5 of the third lens element E3, and R6 is a radius of curvature of the image-side surface S6 of the third lens element E3;
SAG31/CT3 = -0.82, where SAG31 is the distance between the intersection point of the object side surface S5 of the third lens E3 and the optical axis and the maximum effective half-caliber vertex of the object side surface S5 of the third lens E3 on the optical axis, and CT3 is the center thickness of the third lens E3 on the optical axis;
DT11/DT21 = 1.12, wherein DT11 is the maximum effective half-caliber of the object side surface S1 of the first lens E1, and DT21 is the maximum effective half-caliber of the object side surface S3 of the second lens E2;
DT11/DT22 = 0.94, wherein DT11 is the maximum effective half-caliber of the object side surface S1 of the first lens element E1, and DT22 is the maximum effective half-caliber of the image side surface S4 of the second lens element E2;
CT2/CT3 = 0.56, wherein CT2 is the center thickness of the second lens element E2 on the optical axis, and CT3 is the center thickness of the third lens element E3 on the optical axis;
t12/ttl=0.13, where T12 is the distance between the first lens element E1 and the second lens element E2 on the optical axis, and TTL is the distance between the object side surface S1 of the first lens element E1 and the imaging surface S11 on the optical axis;
DT 11/ct1=1.87, wherein DT11 is the maximum effective half-caliber of the object side surface S1 of the first lens element E1, and CT1 is the center thickness of the first lens element E1 on the optical axis;
t34/t23=0.16, where T34 is the distance between the third lens E3 and the fourth lens E4 on the optical axis, and T23 is the distance between the second lens E2 and the third lens E3 on the optical axis;
Σct/ttl=0.38, wherein Σct is the sum of the thicknesses of the centers of the first lens element E1, the second lens element E2, the third lens element E3 and the fourth lens element E4 on the optical axis, respectively, and TTL is the interval distance between the object side surface S1 of the first lens element E1 and the imaging surface S11 on the optical axis;
R1/f=0.54, where R1 is a radius of curvature of the object side surface S1 of the first lens E1, and f is a total effective focal length of the optical imaging lens;
r1/f1=0.39, where R1 is a radius of curvature of the object side surface S1 of the first lens E1, and f1 is an effective focal length of the first lens E1.
Fig. 2A shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values at different angles of view. Fig. 2B shows the relative illuminance curves of the optical imaging lens of embodiment 1, which represent the relative illuminance corresponding to different viewing angles. As can be seen from fig. 2A and 2B, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4B. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens according to the exemplary embodiment of the present application may sequentially include, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.
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 concave 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 concave, 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 filter E5 may be an infrared band pass filter having an object side surface S9 and an image side surface S10. The bandpass wavelength lambda of the filter E5 may float based on the use light source wavelength, and when the transmittance of the bandpass wavelength lambda is greater than 50%, the long-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
Table 4 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 4 Table 4
As can be seen from table 4, in embodiment 2, the object side surface and the image side surface of any one of the first lens element E1 to the fourth lens element E4 are aspherical surfaces. Table 5 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.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 7.4569E-03 | -9.5613E-02 | 1.2423E+00 | -5.8623E+00 | 1.2847E+01 | -1.3603E+01 | 5.4441E+00 |
| S2 | -5.5338E-02 | 2.4126E-02 | -1.6594E+00 | 9.0961E+00 | -2.5489E+01 | 3.4167E+01 | -1.8281E+01 |
| S3 | -1.4774E-01 | -7.2162E-01 | 1.6565E+00 | -5.4087E+00 | 1.4357E+01 | -2.6295E+01 | 2.0055E+01 |
| S4 | -2.7785E-02 | -2.1709E-01 | -2.0157E+00 | 8.9262E+00 | -1.7485E+01 | 1.6568E+01 | -5.8516E+00 |
| S5 | 7.2333E-01 | -2.0252E+00 | 3.3328E+00 | -3.9654E+00 | 5.6100E+00 | -5.1002E+00 | 1.7628E+00 |
| S6 | -1.3423E-01 | -9.0526E-01 | 4.0062E+00 | -9.5217E+00 | 1.2650E+01 | -8.2701E+00 | 2.0948E+00 |
| S7 | -4.6097E-01 | 4.6392E-01 | -3.8274E-01 | 2.2160E-01 | -8.1453E-02 | 1.6599E-02 | -1.3968E-03 |
| S8 | -1.0023E-01 | 2.1762E-02 | 1.1125E-02 | -1.7621E-02 | 8.9432E-03 | -2.2004E-03 | 2.1301E-04 |
TABLE 5
Table 6 shows effective focal lengths f1 to f4 of the respective lenses in embodiment 2, a total effective focal length f of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region of the photosensitive element on the imaging surface.
| Parameters (parameters) | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f(mm) | ImgH(mm) |
| Numerical value | 3.74 | 97.78 | 4.71 | -16.54 | 2.68 | 2.27 |
TABLE 6
Fig. 4A shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values at different angles of view. Fig. 4B shows the relative illuminance curves of the optical imaging lens of embodiment 2, which represent the relative illuminance corresponding to different viewing angles. As can be seen from fig. 4A and 4B, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6B. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens according to the exemplary embodiment of the present application may sequentially include, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.
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 negative refractive power, wherein an object-side surface S3 thereof is concave 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 concave, and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave.
The filter E5 may be an infrared band pass filter having an object side surface S9 and an image side surface S10. The bandpass wavelength lambda of the filter E5 may float based on the use light source wavelength, and when the transmittance of the bandpass wavelength lambda is greater than 50%, the long-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 7
As is clear from table 7, in example 3, the object side surface and the image side surface of any one of the first lens element E1 to the fourth lens element E4 are aspherical surfaces. Table 8 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.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -6.6540E-03 | -1.8292E-02 | 3.9677E-01 | -3.1421E+00 | 8.5995E+00 | -1.1053E+01 | 5.2538E+00 |
| S2 | -4.1259E-03 | -1.4651E+00 | 1.1714E+01 | -5.4758E+01 | 1.3997E+02 | -1.8591E+02 | 1.0002E+02 |
| S3 | -2.2706E-01 | -5.8956E-02 | -2.7092E+00 | 1.4086E+01 | -3.5542E+01 | 4.3923E+01 | -1.9934E+01 |
| S4 | -7.9000E-02 | -1.5715E-01 | -1.5687E+00 | 7.0711E+00 | -1.4368E+01 | 1.4449E+01 | -5.5058E+00 |
| S5 | 6.8075E-01 | -1.5533E+00 | 2.2973E+00 | -2.2530E+00 | 1.4744E+00 | -1.2067E-01 | -2.8310E-01 |
| S6 | -1.6318E-01 | -1.5158E-01 | 6.9222E-01 | -1.6343E+00 | 2.1927E+00 | -1.3610E+00 | 3.0994E-01 |
| S7 | -2.5669E-01 | 1.7332E-01 | -8.5329E-02 | 2.7910E-02 | -5.9548E-03 | 7.4489E-04 | -4.1371E-05 |
| S8 | -5.4670E-02 | 2.5672E-02 | -7.7073E-03 | 1.9548E-03 | -5.0207E-04 | 8.0995E-05 | -5.3194E-06 |
TABLE 8
Table 9 gives the effective focal lengths f1 to f4 of the respective lenses in embodiment 3, the total effective focal length f of the optical imaging lens, and half the diagonal length ImgH of the effective pixel region of the photosensitive element on the imaging surface.
| Parameters (parameters) | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f(mm) | ImgH(mm) |
| Numerical value | 3.94 | -49.06 | 7.57 | 68.33 | 2.81 | 2.27 |
TABLE 9
Fig. 6A shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values at different angles of view. Fig. 6B shows the relative illuminance curves of the optical imaging lens of embodiment 3, which represent the relative illuminance corresponding to different viewing angles. As can be seen from fig. 6A and 6B, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8B. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens according to the exemplary embodiment of the present application may sequentially include, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.
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 negative refractive power, wherein an object-side surface S3 thereof is concave 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 concave, 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 filter E5 may be an infrared band pass filter having an object side surface S9 and an image side surface S10. The bandpass wavelength lambda of the filter E5 may float based on the use light source wavelength, and when the transmittance of the bandpass wavelength lambda is greater than 50%, the long-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
Table 10 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 10
As can be seen from table 10, in example 4, the object side surface and the image side surface of any one of the first lens element E1 to the fourth lens element E4 are aspherical surfaces. Table 11 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.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 9.4183E-04 | -3.5073E-02 | 5.2869E-01 | -3.8901E+00 | 1.0735E+01 | -1.4059E+01 | 6.8164E+00 |
| S2 | -2.7337E-02 | -1.2398E+00 | 9.9925E+00 | -4.8582E+01 | 1.2862E+02 | -1.7718E+02 | 9.8971E+01 |
| S3 | -3.0312E-01 | 3.9173E-01 | -7.4034E+00 | 3.7322E+01 | -9.8884E+01 | 1.3136E+02 | -6.7044E+01 |
| S4 | -1.7138E-01 | 3.4065E-01 | -4.6902E+00 | 1.7696E+01 | -3.5223E+01 | 3.5846E+01 | -1.4146E+01 |
| S5 | 6.2725E-01 | -1.0040E+00 | -8.9468E-02 | 3.0021E+00 | -5.1823E+00 | 5.0135E+00 | -2.2328E+00 |
| S6 | -2.2745E-01 | -1.3536E-01 | 1.3259E+00 | -4.2857E+00 | 6.6259E+00 | -4.6342E+00 | 1.1988E+00 |
| S7 | -2.4370E-01 | 1.2828E-01 | -4.8259E-02 | 1.2012E-02 | -1.9278E-03 | 1.6214E-04 | -4.4763E-06 |
| S8 | -4.3387E-02 | 6.3912E-03 | 9.4708E-04 | 1.9733E-04 | -3.3284E-04 | 6.7515E-05 | -4.3916E-06 |
TABLE 11
Table 12 shows effective focal lengths f1 to f4 of the respective lenses in embodiment 4, a total effective focal length f of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region of the photosensitive element on the imaging surface.
| Parameters (parameters) | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f(mm) | ImgH(mm) |
| Numerical value | 3.80 | -53.80 | 4.36 | -12.90 | 2.77 | 2.27 |
Table 12
Fig. 8A shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values at different angles of view. Fig. 8B shows the relative illuminance curves of the optical imaging lens of embodiment 4, which represent the relative illuminance corresponding to different viewing angles. As can be seen from fig. 8A and 8B, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10B. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, an optical imaging lens according to an exemplary embodiment of the present application may sequentially include, from an object side to an image side along an optical axis: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.
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 negative refractive power, wherein an object-side surface S3 thereof is concave 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 concave, 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 filter E5 may be an infrared band pass filter having an object side surface S9 and an image side surface S10. The bandpass wavelength lambda of the filter E5 may float based on the use light source wavelength, and when the transmittance of the bandpass wavelength lambda is greater than 50%, the long-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 13
As is clear from table 13, in example 5, the object side surface and the image side surface of any one of the first lens element E1 to the fourth lens element E4 are aspherical surfaces. Table 14 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.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.5643E-02 | -6.6412E-02 | 3.4933E-01 | -1.8155E+00 | 4.6126E+00 | -6.1251E+00 | 2.9083E+00 |
| S2 | -2.2144E-02 | -1.0903E+00 | 8.5800E+00 | -4.0149E+01 | 1.0045E+02 | -1.3113E+02 | 6.9759E+01 |
| S3 | -2.8882E-01 | -2.0277E+00 | 1.4982E+01 | -7.1774E+01 | 1.9034E+02 | -2.6342E+02 | 1.4905E+02 |
| S4 | -1.8329E-01 | -3.4262E-01 | 3.1534E+00 | -1.2086E+01 | 2.3569E+01 | -2.5933E+01 | 1.2223E+01 |
| S5 | 3.8320E-01 | 1.1536E-01 | -2.0929E+00 | 9.2979E+00 | -2.0230E+01 | 1.9235E+01 | -6.4185E+00 |
| S6 | -8.6310E-01 | 2.2750E+00 | -4.4435E+00 | 5.6282E+00 | -4.3352E+00 | 1.9913E+00 | -4.2489E-01 |
| S7 | -2.0947E-01 | 1.4998E-01 | -1.4562E-01 | 1.0252E-01 | -4.1373E-02 | 8.5910E-03 | -7.1240E-04 |
| S8 | -8.9843E-02 | 5.2557E-02 | -4.0914E-02 | 1.9341E-02 | -4.8819E-03 | 5.4653E-04 | -1.7023E-05 |
TABLE 14
Table 15 shows effective focal lengths f1 to f4 of the respective lenses in embodiment 5, a total effective focal length f of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region of the photosensitive element on the imaging surface.
| Parameters (parameters) | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f(mm) | ImgH(mm) |
| Numerical value | 3.61 | -11.46 | 2.76 | -6.25 | 2.79 | 2.40 |
TABLE 15
Fig. 10A shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values at different angles of view. Fig. 10B shows the relative illuminance curves of the optical imaging lens of embodiment 5, which represent the relative illuminance corresponding to different viewing angles. As can be seen from fig. 10A and 10B, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12B. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, an optical imaging lens according to an exemplary embodiment of the present application may sequentially include, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, filter E5 and imaging surface S11. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S11.
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 negative refractive power, wherein an object-side surface S3 thereof is concave 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 concave, and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave.
The filter E5 may be an infrared band pass filter having an object side surface S9 and an image side surface S10. The bandpass wavelength lambda of the filter E5 may float based on the use light source wavelength, and when the transmittance of the bandpass wavelength lambda is greater than 50%, the long-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cut-off wavelength of the bandpass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
Table 16 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 16
As can be seen from table 16, in example 6, the object side surface and the image side surface of any one of the first lens element E1 to the fourth lens element E4 are aspherical surfaces. Table 17 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.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -2.4371E-03 | -3.1302E-02 | 4.6580E-01 | -3.6093E+00 | 1.0166E+01 | -1.3522E+01 | 6.6493E+00 |
| S2 | 9.6619E-03 | -1.7812E+00 | 1.4552E+01 | -6.8614E+01 | 1.7681E+02 | -2.3653E+02 | 1.2810E+02 |
| S3 | -2.2091E-01 | -1.5921E-01 | -2.1990E+00 | 1.2900E+01 | -3.4628E+01 | 4.4338E+01 | -2.0629E+01 |
| S4 | -6.6381E-02 | -4.0008E-01 | -2.3453E-01 | 3.2551E+00 | -8.0750E+00 | 9.0148E+00 | -3.6455E+00 |
| S5 | 7.0116E-01 | -1.7113E+00 | 2.7923E+00 | -3.3593E+00 | 3.3215E+00 | -1.8483E+00 | 3.5374E-01 |
| S6 | -1.3311E-01 | -2.1826E-01 | 7.0138E-01 | -1.4699E+00 | 1.9116E+00 | -1.1640E+00 | 2.5946E-01 |
| S7 | -2.5052E-01 | 1.5252E-01 | -6.7842E-02 | 2.0155E-02 | -4.0278E-03 | 4.9041E-04 | -2.7403E-05 |
| S8 | -2.2718E-02 | -1.1304E-02 | 1.4416E-02 | -5.6724E-03 | 1.0070E-03 | -7.8007E-05 | 1.6200E-06 |
TABLE 17
Table 18 shows effective focal lengths f1 to f4 of the respective lenses in embodiment 6, a total effective focal length f of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region of the photosensitive element on the imaging surface.
| Parameters (parameters) | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f(mm) | ImgH(mm) |
| Numerical value | 3.97 | -46.65 | 9.44 | 20.59 | 2.80 | 2.40 |
TABLE 18
Fig. 12A shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values at different angles of view. Fig. 12B shows a relative illuminance curve of the optical imaging lens of embodiment 6, which represents the relative illuminance corresponding to the case of different viewing angles. As can be seen from fig. 12A and 12B, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.
In summary, examples 1 to 6 satisfy the relationships shown in table 19, respectively.
TABLE 19
The present application also provides an imaging device, the electron-sensitive element of which may 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 optical imaging lens described above.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (30)
1. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens, which is characterized in that,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has positive focal power or negative focal power, the object side surface is a concave surface, and the image side surface is a convex surface;
the third lens has positive focal power, the object side surface of the third lens is concave, and the image side surface of the third lens is convex;
the fourth lens has positive optical power or negative optical power;
the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens meet the conditions that 1.2 is smaller than f1/f is smaller than 1.8;
the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy 0.9 < R5/R6 < 1.3;
at least one of the first lens to the fourth lens is an aspherical lens.
2. The optical imaging lens of claim 1, further comprising an infrared bandpass filter disposed between the fourth lens and an imaging surface of the optical imaging lens,
the band-pass wavelength lambda of the infrared band-pass filter floats based on a use light source wavelength, and when the transmittance of the band-pass wavelength lambda is greater than 50%, the long-wavelength cutoff wavelength of the band-pass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cutoff wavelength of the band-pass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
3. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R1 of an object side surface of the first lens and a total effective focal length f of the optical imaging lens satisfy 0.3 < R1/f < 0.7.
4. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R1 of an object side surface of the first lens and an effective focal length f1 of the first lens satisfy 0.3 < R1/f1 < 0.6.
5. The optical imaging lens as claimed in claim 1, wherein a maximum effective half-diameter DT11 of an object side surface of the first lens and a center thickness CT1 of the first lens on the optical axis satisfy 1.7 < DT11/CT1 < 2.2.
6. The optical imaging lens as claimed in claim 1, wherein a distance TTL between a sum Σct of center thicknesses of the first lens, the second lens, the third lens and the fourth lens on the optical axis and an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis satisfies 0.2 < Σct/TTL < 0.5.
7. The optical imaging lens as claimed in claim 6, wherein a separation distance T12 between the first lens and the second lens on the optical axis and a separation distance TTL between an object side surface of the first lens and an imaging surface of the optical imaging lens on the optical axis satisfy 0.1 < T12/TTL < 0.2.
8. The optical imaging lens according to claim 6, wherein a separation distance T34 of the third lens and the fourth lens on the optical axis and a separation distance T23 of the second lens and the third lens on the optical axis satisfy T34/T23 < 0.2.
9. The optical imaging lens as claimed in claim 6, wherein a center thickness CT2 of the second lens on the optical axis and a center thickness CT3 of the third lens on the optical axis satisfy 0.4 < CT2/CT3 < 0.7.
10. The optical imaging lens as claimed in claim 6, wherein a center thickness CT4 of the fourth lens on the optical axis and an edge thickness ET4 of the fourth lens satisfy 1.2 < CT4/ET4 < 2.4.
11. The optical imaging lens as claimed in claim 1, wherein a maximum effective half-caliber DT11 of the object side surface of the first lens and a maximum effective half-caliber DT21 of the object side surface of the second lens satisfy 1.0.ltoreq.dt11/DT 21 < 1.3.
12. The optical imaging lens as claimed in claim 1, wherein a maximum effective half-caliber DT11 of an object side surface of the first lens and a maximum effective half-caliber DT22 of an image side surface of the second lens satisfy 0.8 < DT11/DT22 < 1.1.
13. The optical imaging lens as claimed in claim 1, wherein a distance SAG31 between an intersection point of the object side surface of the third lens and the optical axis and a maximum effective half-caliber vertex of the object side surface of the third lens on the optical axis and a center thickness CT3 of the third lens on the optical axis satisfy-1.3 < SAG31/CT3 < -0.7.
14. The optical imaging lens as claimed in claim 1, wherein a maximum effective half-aperture DT42 of an image side surface of the fourth lens and a half-diagonal length ImgH of an effective pixel region of a photosensitive element on an imaging surface of the optical imaging lens satisfy 0.7 < DT42/ImgH < 1.
15. The optical imaging lens of any of claims 1 to 14, wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD +.2.1.
16. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens and a fourth lens, which is characterized in that,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has positive focal power or negative focal power, the object side surface is a concave surface, and the image side surface is a convex surface;
The third lens has positive focal power, the object side surface of the third lens is concave, and the image side surface of the third lens is convex;
the fourth lens has positive optical power or negative optical power;
the central thickness CT2 of the second lens on the optical axis and the central thickness CT3 of the third lens on the optical axis meet 0.4 < CT2/CT3 < 0.7;
the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy 0.9 < R5/R6 < 1.3;
at least one of the first lens to the fourth lens is an aspherical lens.
17. The optical imaging lens of claim 16, wherein a radius of curvature R1 of an object side surface of the first lens and a total effective focal length f of the optical imaging lens satisfy 0.3 < R1/f < 0.7.
18. The optical imaging lens of claim 17, wherein a radius of curvature R1 of an object side surface of the first lens and an effective focal length f1 of the first lens satisfy 0.3 < R1/f1 < 0.6.
19. The optical imaging lens of claim 18, wherein an effective focal length f1 of the first lens and a total effective focal length f of the optical imaging lens satisfy 1.2 < f1/f < 1.8.
20. The optical imaging lens of claim 16, wherein a maximum effective half-diameter DT11 of an object side surface of the first lens and a center thickness CT1 of the first lens on the optical axis satisfy 1.7 < DT11/CT1 < 2.2.
21. The optical imaging lens of claim 20, wherein a maximum effective half-caliber DT11 of the object side surface of the first lens and a maximum effective half-caliber DT21 of the object side surface of the second lens satisfy 1.0+.dt11/DT 21 < 1.3.
22. The optical imaging lens of claim 21, wherein a maximum effective half-caliber DT11 of an object side surface of the first lens and a maximum effective half-caliber DT22 of an image side surface of the second lens satisfy 0.8 < DT11/DT22 < 1.1.
23. The optical imaging lens as claimed in claim 16, wherein a distance SAG31 between an intersection point of the object side surface of the third lens and the optical axis and a maximum effective half-caliber vertex of the object side surface of the third lens on the optical axis and a center thickness CT3 of the third lens on the optical axis satisfy-1.3 < SAG31/CT3 < -0.7.
24. The optical imaging lens of claim 16, wherein a center thickness CT4 of the fourth lens on the optical axis and an edge thickness ET4 of the fourth lens satisfy 1.2 < CT4/ET4 < 2.4.
25. The optical imaging lens of claim 16, wherein a maximum effective half-caliber DT42 of an image side surface of the fourth lens and a half-diagonal length ImgH of an effective pixel region of a photosensitive element on an imaging surface of the optical imaging lens satisfy 0.7 < DT42/ImgH < 1.
26. The optical imaging lens according to claim 16, wherein a separation distance T34 of the third lens and the fourth lens on the optical axis and a separation distance T23 of the second lens and the third lens on the optical axis satisfy T34/T23 < 0.2.
27. The optical imaging lens of claim 26, wherein a separation distance T12 between the first lens and the second lens on the optical axis and a separation distance TTL between an object side surface of the first lens and an imaging surface of the optical imaging lens on the optical axis satisfy 0.1 < T12/TTL < 0.2.
28. The optical imaging lens as claimed in any one of claims 16 to 27, wherein a distance TTL between a sum Σct of center thicknesses of the first lens, the second lens, the third lens and the fourth lens on the optical axis and an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis satisfies 0.2 < Σct/TTL < 0.5.
29. The optical imaging lens of any of claims 16 to 27, further comprising an infrared bandpass filter disposed between the fourth lens and an imaging surface of the optical imaging lens,
the band-pass wavelength lambda of the infrared band-pass filter floats based on a use light source wavelength, and when the transmittance of the band-pass wavelength lambda is greater than 50%, the long-wavelength cutoff wavelength of the band-pass wavelength lambda is 0nm to 30nm longer than the longest wavelength of the use light source wavelength, and the short-wavelength cutoff wavelength of the band-pass wavelength lambda is 0nm to 30nm shorter than the shortest wavelength of the use light source wavelength.
30. The optical imaging lens of any of claims 16 to 27, wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD +.2.1.
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| PCT/CN2018/092209 WO2019134349A1 (en) | 2018-01-02 | 2018-06-21 | Optical imaging lens |
| US16/273,841 US11112589B2 (en) | 2018-01-02 | 2019-02-12 | Optical imaging lens assembly |
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| WO2019134349A1 (en) * | 2018-01-02 | 2019-07-11 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN108427183B (en) * | 2018-05-04 | 2024-06-18 | 浙江舜宇光学有限公司 | Projection lens |
| US11048067B2 (en) * | 2018-05-25 | 2021-06-29 | Anteryon International B.V. | Lens system |
| CN109975955B (en) * | 2019-04-08 | 2024-09-24 | 广东弘景光电科技股份有限公司 | Monitoring optical system for fatigue driving early warning and camera module applied by same |
| CN112526723B (en) * | 2020-12-18 | 2024-09-24 | 辽宁中蓝光电科技有限公司 | TOF lens using free-form surface |
| CN114280758B (en) * | 2021-02-07 | 2024-06-25 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
| CN113655601B (en) * | 2021-08-13 | 2023-08-15 | Oppo广东移动通信有限公司 | Optical lens, image acquisition device and electronic equipment |
| CN114236793B (en) * | 2021-12-14 | 2023-04-21 | 安徽光智科技有限公司 | F22.5-45MM double-view-field infrared focusing lens |
| CN114089509B (en) * | 2022-01-21 | 2022-07-15 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
| CN114967055B (en) * | 2022-04-28 | 2024-05-28 | 浙江舜宇光学有限公司 | Optical imaging lens |
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