CN109960010A - Pick-up lens and electronic device - Google Patents
Pick-up lens and electronic device Download PDFInfo
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- CN109960010A CN109960010A CN201711407958.2A CN201711407958A CN109960010A CN 109960010 A CN109960010 A CN 109960010A CN 201711407958 A CN201711407958 A CN 201711407958A CN 109960010 A CN109960010 A CN 109960010A
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- 238000003384 imaging method Methods 0.000 claims abstract description 11
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- 230000004075 alteration Effects 0.000 description 23
- 230000000007 visual effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 201000009310 astigmatism Diseases 0.000 description 4
- 230000004304 visual acuity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
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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
- G02B13/0045—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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
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Abstract
The invention discloses a kind of pick-up lens and electronic devices.Pick-up lens successively includes: the first lens with positive light coke from object side to image side；The second lens with negative power；The third lens；The 4th lens with positive light coke；The 5th lens with negative power；And infrared fileter；Pick-up lens meets conditional: -4≤f2/F < 0；Wherein, F is the effective focal length of pick-up lens, and f2 is the focal length of the second lens.By above-mentioned design, pick-up lens can satisfy high-resolution, extra-thin demand, and due to being provided with infrared fileter between the 5th lens and imaging surface, to filter out the light of its all band such as visible light, and only allow infrared light to pass through and enter Image Sensor, therefore, pick-up lens can be used as the use of infrared photography camera lens, that is, pick-up lens can also be imaged under dim environment and other special application scenarios and obtain preferable image effect.
Description
Technical field
The present invention relates to optical image technology, in particular to a kind of pick-up lens and electronic device.
Background technique
Traditional pick-up lens need infrared light subsidize environment and special application scenarios under, such as dim environment,
Gesture detecting, temperature sense etc., the image effect of acquisition is bad.
Summary of the invention
Embodiment of the present invention provides a kind of pick-up lens and electronic device.
The pick-up lens of embodiment of the present invention successively includes: from object side to image side
The first lens with positive light coke；
The second lens with negative power；
The third lens；
The 4th lens with positive light coke；
The 5th lens with negative power；And
Infrared fileter；
The pick-up lens meets conditional:
- 4≤f2/F < 0；
Wherein, F is the effective focal length of the pick-up lens, and f2 is the focal length of second lens.
By above-mentioned design, pick-up lens can satisfy high-resolution, extra-thin demand, and due to the 5th lens with
Infrared fileter (infrared to pass through optical filter) is provided between imaging surface, to filter out the light of its all band such as visible light,
And only allow infrared light to pass through and enter Image Sensor, therefore, pick-up lens can be used as the use of infrared photography camera lens, that is, camera shooting
Camera lens can also be imaged under dim environment and other special application scenarios, such as pick-up lens is applied to monitor
When, either daytime or evening can obtain preferable image effect.
In some embodiments, the image side surface of the 5th lens is at paraxial place for concave surface and including at least two contrary flexure
Point.
In this way, the light that can effectively suppress off-axis visual field is incident in the angle in Image Sensor, thus modified off-axis
The aberration of visual field.
In some embodiments, first lens, second lens, the third lens, the 4th lens,
And the 5th lens are aspherical mirror.
In this way, pick-up lens can be effectively reduced and be taken the photograph by the radius of curvature and asphericity coefficient of each lens surface of adjusting
As the total length of camera lens, and system aberration can be effectively corrected, improve image quality.
In some embodiments, the pick-up lens meets conditional:
1.6≤FNO≤10.0；
Wherein, FNO is the coke ratio of the pick-up lens.
The pick-up lens of embodiment of the present invention can adjust coke ratio in the range of 1.6 to 10.0, and aberration may make to obtain
To good correction, the demand of further satisfaction high imaging quality.
In some embodiments, the pick-up lens meets conditional:
1≤TTL/F≤2.5；
Wherein, TTL is distance on the axis of imaging surface of the object side of first lens to the pick-up lens.
As TTL/F < 1, it is difficult to correct each aberration, especially curvature of the image, distortion aberration；As TTL/F > 2.5, take the photograph
As the overall length of camera lens is too long, lead to the whole enlargement of pick-up lens.Meet the above conditions, can preferably correct each aberration,
And it is able to achieve the ultrathin of pick-up lens.
In some embodiments, the pick-up lens meets conditional:
0 f1/F≤3 <；
Wherein, f1 is the focal length of first lens.
As f1/F > 3, light path is longer, is unfavorable for the ultrathin of pick-up lens.Meet the above conditions, by rationally dividing
With the first power of lens, is conducive to the overall length for reducing pick-up lens, realizes the ultrathin of pick-up lens；Make first simultaneously
The shape of lens is relatively uniform, to guarantee the craftsmanship of the first lens.
In some embodiments, the pick-up lens meets conditional:
0 L3R2/L3R1≤2.0 <；
Wherein, L3R1 is the radius of curvature of the object side of the third lens, and L3R2 is the image side surface of the third lens
Radius of curvature.
Meet the above conditions, the shape of the third lens can be limited, and makes the curvature half of the object side of the third lens
Diameter will not be too small, and influences the processing and manufacturing of the third lens and the assembling of pick-up lens, and then influences product yield.In addition, logical
Object side and the radius of curvature of image side surface for crossing reasonable distribution the third lens, can maintain aberration balancing, improve pick-up lens
Image quality.
In some embodiments, the pick-up lens meets conditional:
0 L4R2/L4R1≤2.0 <；
Wherein, L4R1 is the radius of curvature of the object side of the 4th lens, and L4R2 is the image side surface of the 4th lens
Radius of curvature.
Meet the above conditions, the shape of the 4th lens can be limited, and makes the curvature half of the object side of the third lens
Diameter will not be too small, and influences the processing and manufacturing of the 4th lens and the assembling of pick-up lens, and then influences product yield.In addition, logical
The object side of the 4th lens of reasonable distribution and the radius of curvature of image side surface are crossed, is conducive to amendment the first lens to the third lens and is produced
Raw aberration and astigmatism, and promote the resolving power of pick-up lens.
In some embodiments, the pick-up lens meets conditional:
0 L5R2/L5R1≤2.0 <；
Wherein, L5R1 is the radius of curvature of the object side of the 5th lens, and L5R2 is the image side surface of the 5th lens
Radius of curvature.
Meet the above conditions, the shape of the 5th lens can be limited, and makes the curvature half of the object side of the 5th lens
Diameter will not be too small, and influences the processing and manufacturing of the 5th lens and the assembling of pick-up lens, and then influences product yield.In addition, logical
The object side of the 5th lens of reasonable distribution and the radius of curvature of image side surface are crossed, is conducive to amendment the first lens to the 4th lens and is produced
Raw aberration and astigmatism, and promote the resolving power of pick-up lens.
The electronic device of embodiment of the present invention, comprising:
Image Sensor；And
Pick-up lens described in any of the above-described embodiment, the pick-up lens are aligned with the Image Sensor.
By above-mentioned design, the pick-up lens of the electronic device of embodiment of the present invention can satisfy high-resolution, ultra-thin
The demand of type, and due to being provided with infrared fileter (infrared to pass through optical filter) between the 5th lens and imaging surface, to filter out
The light of its all band such as visible light, and only allow infrared light to pass through and enter Image Sensor, therefore, pick-up lens can be made
For the use of infrared photography camera lens, that is, pick-up lens can also be imaged under dim environment and other special application scenarios,
Such as pick-up lens is when being applied to monitor, either daytime or can obtain preferable image effect at night.
The additional aspect and advantage of embodiment of the present invention will be set forth in part in the description, partially will be from following
Become obvious in description, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage can be from combining in description of the following accompanying drawings to embodiment
It will be apparent and be readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the pick-up lens of first embodiment of the invention；
Fig. 2 is the structural schematic diagram of the pick-up lens of second embodiment of the invention；
Fig. 3 is the structural schematic diagram of the pick-up lens of third embodiment of the invention；
Fig. 4 is the aberration diagram (mm) of pick-up lens in Fig. 1；
Fig. 5 is the aberration diagram (mm) of pick-up lens in Fig. 2；
Fig. 6 is the aberration diagram (mm) of pick-up lens in Fig. 3；
Fig. 7 is the structural schematic diagram of the electronic device of embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.?
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature right above second feature and oblique upper, or be merely representative of
First feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Also referring to Fig. 1 to Fig. 3, the pick-up lens 10 of embodiment of the present invention successively includes having from object side to image side
First lens L1 of positive light coke, the second lens L2 with negative power, the third lens L3, the with positive light coke the 4th are thoroughly
Mirror L4, the 5th lens L5 and infrared fileter L6 with negative power.
There is first lens L1 object side S1 and image side surface S2, the second lens L2 to have object side S3 and image side surface S4, the
There is three lens L3 object side S5 and image side surface S6, the 4th lens L4 to have object side S7 and image side surface S8, the 5th lens L5 tool
There are object side S9 and image side surface S10, infrared fileter L6 that there is object side S11 and image side surface S12.
In some embodiments, pick-up lens 10 further includes aperture diaphragm STO.Aperture diaphragm STO can be set in office
It anticipates on the surface of one piece of lens, or is arranged before the first lens L1, or be arranged between any two pieces of lens, or setting is the
Between five lens L5 and infrared fileter L6.For example, aperture diaphragm STO is arranged on the surface of the first lens L1 in Fig. 1.
In figure 2 and figure 3, aperture diaphragm STO is arranged between the first lens L1 and the second lens L2.
When pick-up lens 10 is used to be imaged, the light of subject OBJ sending or reflection enters from object side direction to be taken the photograph
As camera lens 10, and sequentially pass through the first lens L1, the second lens L2, the third lens L3, the 4th lens L4, the 5th lens L5, with
And infrared fileter L6, it finally converges on imaging surface S13.
In some embodiments, pick-up lens 10 meets conditional:
- 4≤f2/F < 0；
Wherein, F is the effective focal length of pick-up lens 10, and f2 is the focal length of the second lens L2.
In other words, f2/F can for [- 4,0) any value in range, such as the value can for -4, -
3.5, -3, -2.5, -2, -1.5, -1, -0.5 etc..
By above-mentioned design, pick-up lens 10 can satisfy high-resolution, extra-thin demand, and due in the 5th lens
Be provided between L5 and imaging surface S13 infrared fileter L6 (it is infrared by optical filter L6), with filter out visible light etc. other
The light of wave band, and only allow infrared light to pass through and enter Image Sensor 20 (shown in Fig. 7), therefore, pick-up lens 10 can be used as
Infrared photography camera lens uses, that is, pick-up lens 10 can also be imaged under dim environment and other special application scenarios
And have preferable image effect, such as pick-up lens 10 be applied to monitor when, either daytime or at night can obtain
Obtain preferable image effect.
In some embodiments, pick-up lens 10 meets conditional:
1.6≤FNO≤10.0；
Wherein, FNO is the coke ratio of pick-up lens 10.
In other words, FNO can be any value in [1.6,10.0] range, for example, the value can for 1.6,2,3,
4,5,6,7,8,9,9.5,10 etc..
Specifically, pick-up lens 10 can adjust coke ratio (i.e. f-number) by aperture diaphragm STO.Such as: pick-up lens
Coke ratio can be adjusted to 1.8,1.9 etc. by aperture diaphragm STO by 10.
The pick-up lens 10 of embodiment of the present invention can adjust coke ratio in the range of 1.6 to 10.0, may make aberration
Obtain good correction, the demand of further satisfaction high imaging quality.
In some embodiments, pick-up lens 10 meets conditional:
1≤TTL/F≤2.5；
Wherein, F is the effective focal length of pick-up lens 10.
In other words, TTL/F can be any value in [1,6] range, for example, the value can for 1,1.15,1.3,
1.45,1.6,1.75,1.9,2.05,2.2,2.35,2.5 etc..
As TTL/F < 1, it is difficult to correct each aberration, especially curvature of the image, distortion aberration；As TTL/F > 2.5, take the photograph
As the overall length of camera lens 10 is too long, lead to the whole enlargement of pick-up lens 10.Meet the above conditions, can preferably correct each picture
Difference, and it is able to achieve the ultrathin of pick-up lens 10.
In some embodiments, pick-up lens 10 meets conditional:
0 f1/F≤3 <；
Wherein, f1 is the focal length of the first lens L1.
In other words, f1/F can for (0,3] any value in range, such as the value can for 0.3,0.6,0.9,
1.2,1.5,1.8,2.1,2.4,2.7,3.0 etc..
As f1/F > 3, light path is longer, is unfavorable for the ultrathin of pick-up lens 10.Meet the above conditions, by reasonable
The focal power for distributing the first lens L1 is conducive to the overall length for reducing pick-up lens 10, realizes the ultrathin of pick-up lens 10；Simultaneously
So that the shape of the first lens L1 is relatively uniform, to guarantee the craftsmanship of the first lens L1.
In some embodiments, pick-up lens 10 meets conditional:
0 L3R2/L3R1≤2.0 <；
Wherein, L3R1 is the radius of curvature of the object side S5 of the third lens L3, and L3R2 is the image side surface S6 of the third lens L3
Radius of curvature.
In other words, L3R2/L3R1 can for (0,2.0] any value in range, such as the value can for 0.1,
0.2,0.4,0.6,0.8,1,1.2,1.4,1.6,1.8,1.9,2.0 etc..
Meet the above conditions, the shape of the third lens L3 can be limited, and make the object side S5 of the third lens L3
Radius of curvature will not be too small, and influences the processing and manufacturing of the third lens L3 and the assembling of pick-up lens 10, and then it is good to influence product
Rate.In addition, the radius of curvature of object side S5 and image side surface S6 by reasonable distribution the third lens L3, can maintain aberration flat
Weighing apparatus improves the image quality of pick-up lens 10.
In some embodiments, pick-up lens 10 meets conditional:
0 L4R2/L4R1≤2.0 <；
Wherein, L4R1 is the radius of curvature of the object side S7 of the 4th lens L4, and L4R2 is the image side surface S8 of the 4th lens L4
Radius of curvature.
In other words, L4R2/L4R1 can for (0,2.0] any value in range, such as the value can for 0.1,
0.2,0.4,0.6,0.8,1,1.2,1.4,1.6,1.8,1.9,2.0 etc..
Meet the above conditions, the shape of the 4th lens L4 can be limited, and make the object side S7 of the 4th lens L4
Radius of curvature will not be too small, and influences the processing and manufacturing of the 4th lens L4 and the assembling of pick-up lens 10, and then it is good to influence product
Rate.In addition, the radius of curvature of object side S7 and image side surface S8 by the 4th lens L4 of reasonable distribution, are conducive to amendment first thoroughly
Aberration caused by mirror L1 to the third lens L3 and astigmatism, and promote the resolving power of pick-up lens 10.
In some embodiments, pick-up lens 10 meets conditional:
0 L5R2/L5R1≤2.0 <；
Wherein, L5R1 is the radius of curvature of the object side S9 of the 5th lens L5, and L5R2 is the image side surface S10 of the 5th lens L5
Radius of curvature.
In other words, L5R2/L5R1 can for (0,2.0] any value in range, such as the value can for 0.1,
0.2,0.4,0.6,0.8,1,1.2,1.4,1.6,1.8,1.9,2.0 etc..
Meet the above conditions, the shape of the 5th lens L5 can be limited, and make the object side S9 of the 5th lens L5
Radius of curvature will not be too small, and influences the processing and manufacturing of the 5th lens L5 and the assembling of pick-up lens 10, and then it is good to influence product
Rate.In addition, the radius of curvature of object side S9 and image side surface S10 by the 5th lens L5 of reasonable distribution, are conducive to amendment first
Aberration and astigmatism caused by lens L1 to the 4th lens L4, and promote the resolving power of pick-up lens 10.
In some embodiments, the first lens L1, the second lens L2, the third lens L3, the 4th lens L4 and the 5th are saturating
The material of mirror L5 is plastics.
Since the first lens L1 to the 5th lens L5 is all made of plastic lens, pick-up lens 10 is effectively eliminating aberration, is expiring
While foot high pixel demand, ultrathin may be implemented, and cost is relatively low.
In some embodiments, infrared fileter L6 is the plate glass made of glass material, infrared fileter L6
For adjusting the wavelength of light section of imaging, infrared light is set to enter (Fig. 7 institute of Image Sensor 20 specifically for isolation visible light
Show).
In some embodiments, the first lens L1, the second lens L2, the third lens L3, the 4th lens L4 and the 5th are saturating
Mirror L5 is aspherical mirror.Aspherical face type is determined by following formula:
Wherein, Z is the fore-and-aft distance of aspherical any point and surface vertices, and r is aspherical any point to optical axis
Distance, c are vertex curvature (inverses of radius of curvature), and k is the constant of the cone, and A, B, C, D, E, F, G are asphericity coefficients.
In this way, pick-up lens 10 can be effectively reduced by the radius of curvature and asphericity coefficient of each lens surface of adjusting
The total length of pick-up lens 10, and system aberration can be effectively corrected, improve image quality.
First embodiment
Referring to Fig. 1, in the first embodiment, the first lens L1 has positive light coke, the second lens L2 has negative light
Focal power, the third lens L3 have positive light coke, and the 4th lens L4 has positive light coke, and the 5th lens L5 has negative power.
In the pick-up lens 10 of embodiment of the present invention, due to multiple lens mixing with positive light coke and negative power
Arrangement, meets demand of the pick-up lens 10 to ultrathin, and can guarantee that pick-up lens 10 has preferable image quality.This
When, pick-up lens 10 can be used as ultrathin super large aperture infrared photography camera lens and use.
In the first embodiment, object side S1 is convex surface, and image side surface S2 is convex surface, and object side S3 is convex surface, image side surface
S4 is concave surface, and object side S5 is convex surface, and image side surface S6 is concave surface, and object side S7 is concave surface, and image side surface S8 is convex surface, object side S9
It is convex surface at paraxial place, image side surface S10 is concave surface at paraxial place.Further, image side surface S10 may include at least two contrary flexure
Point.In this way, the light that can effectively suppress off-axis visual field is incident in the angle on Image Sensor 20 (shown in Fig. 7), to repair
The aberration of just off-axis visual field.
Please refer to Fig. 1 and Fig. 4, the Image Sensor 20 (shown in Fig. 7) that first embodiment is selected is 1/4 inch (inch),
The diagonal distance in effective image sensing area is 4.693mm, and pick-up lens 10 meets the condition of following table:
Table 1
| f1(mm) | 2.595 | F(mm) | 2.822 |
| f2(mm) | -4.686 | FNO | 1.8 |
| f3(mm) | 139.315 | FOV(deg) | 79.0 |
| f4(mm) | 1.081 | ||
| f5(mm) | -1.090 |
In table 1, f1 is the focal length of the first lens L1, and f2 is the focal length of the second lens L2, and f3 is the focal length of the third lens L3,
F4 is the focal length of the 4th lens L4, and f5 is the focal length of the 5th lens L5, and F is the effective focal length of pick-up lens 10, and FNO is camera lens
First 10 coke ratio, FOV are the field angle of pick-up lens 10.
Table 2
Table 3
Second embodiment
Referring to Fig. 2, in this second embodiment, the first lens L1 has positive light coke, the second lens L2 has negative light
Focal power, the third lens L3 have negative power, and the 4th lens L4 has positive light coke, and the 5th lens L5 has negative power.
In the pick-up lens 10 of embodiment of the present invention, due to multiple lens mixing with positive light coke and negative power
Arrangement, meets demand of the pick-up lens 10 to ultrathin, and can guarantee that pick-up lens 10 has preferable image quality.This
When, pick-up lens 10 can be used as ultrathin super large aperture infrared photography camera lens and use.
In this second embodiment, object side S1 is convex surface, and image side surface S2 is convex surface, and object side S3 is convex surface, image side surface
S4 is concave surface, and object side S5 is convex surface, and image side surface S6 is concave surface, and object side S7 is concave surface, and image side surface S8 is convex surface, object side S9
It is convex surface at paraxial place, image side surface S10 is concave surface at paraxial place.Further, image side surface S10 may include at least two contrary flexure
Point.In this way, the light that can effectively suppress off-axis visual field is incident in the angle on Image Sensor 20 (shown in Fig. 7), to repair
The aberration of just off-axis visual field.
Please refer to Fig. 2 and Fig. 5, the Image Sensor that second embodiment is selected be 1/4 inch of 20 (shown in Fig. 7) (inch),
The diagonal distance in effective image sensing area is 4.693mm, and pick-up lens 10 meets the condition of following table:
Table 4
| f1(mm) | 2.488 | F(mm) | 2.800 |
| f2(mm) | -4.980 | FNO | 1.8 |
| f3(mm) | -147.144 | FOV(deg) | 79.1 |
| f4(mm) | 1.146 | ||
| f5(mm) | -1.123 |
In table 4, f1 is the focal length of the first lens L1, and f2 is the focal length of the second lens L2, and f3 is the focal length of the third lens L3,
F4 is the focal length of the 4th lens L4, and f5 is the focal length of the 5th lens L5, and F is the effective focal length of pick-up lens 10, and FNO is camera lens
First 10 coke ratio, FOV are the field angle of pick-up lens 10.
Table 5
Table 6
Third embodiment
Referring to Fig. 3, in the third embodiment, the first lens L1 has positive light coke, the second lens L2 has negative light
Focal power, the third lens L3 have negative power, and the 4th lens L4 has positive light coke, and the 5th lens L5 has negative power.
In the pick-up lens 10 of embodiment of the present invention, due to multiple lens mixing with positive light coke and negative power
Arrangement, meets demand of the pick-up lens 10 to ultrathin, and can guarantee that pick-up lens 10 has preferable image quality.This
When, pick-up lens 10 can be used as ultrathin super large aperture infrared photography camera lens and use.
In the third embodiment, object side S1 is convex surface, and image side surface S2 is convex surface, and object side S3 is convex surface, image side surface
S4 is concave surface, and object side S5 is convex surface, and image side surface S6 is concave surface, and object side S7 is concave surface, and image side surface S8 is convex surface, object side S9
It is convex surface at paraxial place, image side surface S10 is concave surface at paraxial place.Further, image side surface S10 may include at least two contrary flexure
Point.In this way, the light that can effectively suppress off-axis visual field is incident in the angle on Image Sensor 20 (shown in Fig. 7), to repair
The aberration of just off-axis visual field.
Please refer to Fig. 3 and Fig. 6, the Image Sensor 20 (shown in Fig. 7) that third embodiment is selected is 1/4 inch (inch),
The diagonal distance in effective image sensing area is 4.693mm, and pick-up lens 10 meets the condition of following table:
Table 7
In table 7, f1 is the focal length of the first lens L1, and f2 is the focal length of the second lens L2, and f3 is the focal length of the third lens L3,
F4 is the focal length of the 4th lens L4, and f5 is the focal length of the 5th lens L5, and F is the effective focal length of pick-up lens 10, and FNO is camera lens
First 10 coke ratio, FOV are the field angle of pick-up lens 10.
Table 8
Table 9
Referring to Fig. 7, the pick-up lens 10 of embodiment of the present invention can be applied to the electronic device of embodiment of the present invention
100.Electronic device 100 includes the pick-up lens 10 of Image Sensor 20 and any of the above-described embodiment.Pick-up lens 10 and shadow
As sensor 20 is aligned.
Specifically, Image Sensor 20 can use complementary metal oxide semiconductor (CMOS, Complementary
Metal Oxide Semiconductor) Image Sensor or charge coupled cell (CCD, Charge-coupled
Device) Image Sensor.Pick-up lens 10 be aligned with Image Sensor 20 include: pick-up lens 10 optical axis and image sensing
The centre normal of device 20 is overlapped.
The electronic device 100 of embodiment of the present invention includes but is not limited to for hand-held electronic equipment (mobile phone, plate, pen
Remember this computer, camera, 3D video camera, smartwatch etc.), smart home device, video monitor, gesture detection equipment, temperature
The electronic device of the supports such as sensing apparatus imaging.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " etc. means in conjunction with the embodiment party
Formula or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the invention
In.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover,
Particular features, structures, materials, or characteristics described can be in any one or more embodiments or example with suitable
Mode combine.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one described feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two,
Three etc., unless otherwise specifically defined.
Although embodiments of the present invention have been shown and described above, it is to be understood that above embodiment is
Illustratively, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be right
Above embodiment is changed, modifies, replacement and variant, and the scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of pick-up lens, which is characterized in that successively include: from object side to image side
The first lens with positive light coke；
The second lens with negative power；
The third lens；
The 4th lens with positive light coke；
The 5th lens with negative power；And
Infrared fileter；
The pick-up lens meets conditional:
- 4≤f2/F < 0；
Wherein, F is the effective focal length of the pick-up lens, and f2 is the focal length of second lens.
2. pick-up lens according to claim 1, which is characterized in that the image side surface of the 5th lens is recessed at paraxial place
Face and including at least two points of inflexion.
3. pick-up lens according to claim 1, which is characterized in that first lens, second lens, described
Three lens, the 4th lens and the 5th lens are aspherical mirror.
4. pick-up lens according to claim 1, which is characterized in that the pick-up lens meets conditional:
1.6≤FNO≤10.0；
Wherein, FNO is the coke ratio of the pick-up lens.
5. pick-up lens according to claim 1, which is characterized in that the pick-up lens meets conditional:
1≤TTL/F≤2.5；
Wherein, TTL is distance on the axis of imaging surface of the object side of first lens to the pick-up lens.
6. pick-up lens according to claim 1, which is characterized in that the pick-up lens meets conditional:
0 f1/F≤3 <；
Wherein, f1 is the focal length of first lens.
7. pick-up lens according to claim 1, which is characterized in that the pick-up lens meets conditional:
0 L3R2/L3R1≤2.0 <；
Wherein, L3R1 is the radius of curvature of the object side of the third lens, and L3R2 is the song of the image side surface of the third lens
Rate radius.
8. pick-up lens according to claim 1, which is characterized in that the pick-up lens meets conditional:
0 L4R2/L4R1≤2.0 <；
Wherein, L4R1 is the radius of curvature of the object side of the 4th lens, and L4R2 is the song of the image side surface of the 4th lens
Rate radius.
9. pick-up lens according to claim 1, which is characterized in that the pick-up lens meets conditional:
0 L5R2/L5R1≤2.0 <；
Wherein, L5R1 is the radius of curvature of the object side of the 5th lens, and L5R2 is the song of the image side surface of the 5th lens
Rate radius.
10. a kind of electronic device characterized by comprising
Image Sensor；And
Pick-up lens described in any one of claim 1-9, the pick-up lens are aligned with the Image Sensor.
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| CN201711407958.2A CN109960010A (en) | 2017-12-22 | 2017-12-22 | Pick-up lens and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711407958.2A CN109960010A (en) | 2017-12-22 | 2017-12-22 | Pick-up lens and electronic device |
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| CN111474687A (en) * | 2020-06-10 | 2020-07-31 | 浙江舜宇光学有限公司 | Image pickup lens assembly |
| CN117518429A (en) * | 2024-01-05 | 2024-02-06 | 维悟光子(北京)科技有限公司 | Lens for robot vision |
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| CN102132188A (en) * | 2008-08-25 | 2011-07-20 | 柯尼卡美能达精密光学株式会社 | Photographic lens, photographic device and portable terminal |
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| CN111474687A (en) * | 2020-06-10 | 2020-07-31 | 浙江舜宇光学有限公司 | Image pickup lens assembly |
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