CN107300751B - Image pickup lens - Google Patents
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- CN107300751B CN107300751B CN201710668086.9A CN201710668086A CN107300751B CN 107300751 B CN107300751 B CN 107300751B CN 201710668086 A CN201710668086 A CN 201710668086A CN 107300751 B CN107300751 B CN 107300751B
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- 238000003384 imaging method Methods 0.000 claims abstract description 115
- 230000003287 optical effect Effects 0.000 claims abstract description 86
- 230000014509 gene expression Effects 0.000 claims abstract description 29
- 230000005499 meniscus Effects 0.000 claims abstract description 13
- 230000004075 alteration Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000004904 shortening Methods 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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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
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Abstract
The invention discloses an imaging camera lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a meniscus-type first lens with optical power, the object side surface of which is a convex surface; a second lens having optical power, the object-side surface of which is convex at the paraxial region; a meniscus third lens with negative focal power, whose image side surface is concave; a biconvex fourth lens having positive optical power; a meniscus fifth lens with negative focal power, whose image side surface is a convex surface; a sixth lens having positive optical power, the object-side surface of which is convex at the paraxial region; a meniscus seventh lens with negative focal power, whose image side surface is concave at the paraxial region; a light filter; seven lenses of the lens are all plastic aspheric lenses. Wherein TTL represents the optical total length of the imaging lens, imgH represents the half image height above the imaging plane, which satisfies the following conditional expression: TTL/ImgH <1.50. The imaging camera lens has the advantages of miniaturization, large aperture and high imaging quality.
Description
Technical Field
The present invention relates to the field of imaging lenses, and in particular, to an imaging lens.
Background
In recent years, the thinning of intelligent portable electronic devices has become a design trend, and this trend has affected the development of related imaging lenses, and it has been a development direction of industry efforts to effectively reduce the system length of the optical lenses while still maintaining sufficient optical performance.
Meanwhile, the existing intelligent portable electronic device is used for shooting human images or close-up scenes, which also puts higher demands on the sharpness of an imaging lens. It is known that the larger the aperture of the lens is, the larger the light incoming amount is, the shutter speed can be effectively improved, and the better the background blurring effect is, the better the shooting imaging quality is under the dim environment.
However, the conventional lens aperture mounted on the portable electronic device is often f/2 or less, which is disadvantageous for improving the imaging sharpness.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a large aperture imaging lens that improves the sharpness of imaging.
The invention provides an imaging lens, which sequentially comprises from an object side to an image side along an optical axis: a meniscus-type first lens with optical power, the object side surface of which is a convex surface; a second lens having optical power, the object-side surface of which is convex at the paraxial region; a meniscus third lens with negative focal power, whose image side surface is concave; a biconvex fourth lens having positive optical power; a meniscus fifth lens with negative focal power, whose image side surface is a convex surface; a sixth lens with positive focal power, wherein the object side surface of the sixth lens is convex at the paraxial region, and at least one inflection point is arranged on the object side surface of the sixth lens; a meniscus seventh lens with negative focal power, whose image side surface is concave at the paraxial region, and whose image side surface is provided with at least one inflection point; a light filter; the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all plastic aspherical lenses. Wherein, the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface is half of the diagonal length ImgH of the effective pixel area on the imaging surface, which satisfies the following conditional expression: TTL/ImgH <1.50.
Further, the imaging lens satisfies the conditional expression:
-1.85<(R3-R4)/(R3+R4)<0.25；
wherein R3 represents a radius of curvature of the object side surface of the second lens, and R4 represents a radius of curvature of the imaging surface of the second lens.
Further, the imaging lens satisfies the following conditional expression:
-6.50<(R5+R6)/(R5-R6)<3.00，
0.35<(R7+R8)/(R7-R8)<0.75，
-5.20<(R9+R10)/(R9-R10)<-2.10，
wherein R5 represents a radius of curvature of the third lens object side surface, R6 represents a radius of curvature of the third lens imaging surface, R7 represents a radius of curvature of the fourth lens object side surface, R8 represents a radius of curvature of the fourth lens imaging surface, R9 represents a radius of curvature of the fifth lens object side surface, and R10 represents a radius of curvature of the fifth lens imaging surface.
Further, the imaging lens satisfies the following conditional expression:
wherein ,represents the optical power of the whole lens system, +.>Representing the optical power of the first lens, +.>Representing the optical power of the second lens, +.>Representing the optical power of the third lens, +.>Represents the optical power of the fourth lens, +.>Representing the optical power of the fifth lens.
Further, the imaging lens satisfies the following conditional expression:
0.90<T12/T23<5.70；
0.50<T2/T3<2.30；
wherein T12 represents the distance between the first lens and the second lens on the optical axis, T2 represents the center thickness of the second lens, T23 represents the distance between the second lens and the third lens on the optical axis, and T3 represents the center thickness of the third lens.
Further, the imaging lens satisfies the following conditional expression:
2.0<(T12/T23)+(T34/T45)+(T56/T67)<7.0；
wherein T12 represents an interval distance between the first lens and the second lens on the optical axis, T23 represents an interval distance between the second lens and the third lens on the optical axis, T34 represents an interval distance between the third lens and the fourth lens on the optical axis, T45 represents an interval distance between the fourth lens and the fifth lens on the optical axis, T56 represents an interval distance between the fifth lens and the sixth lens on the optical axis, and T67 represents an interval distance between the sixth lens and the seventh lens on the optical axis.
Further, the imaging lens satisfies the following conditional expression:
50<V1<60；
20<V2<60；
20<V3<60；
50<V4<60；
20<V5<30；
50<V6<60；
50<V7<60；
wherein V1, V2, V3, V4, V5, V6, V7 represent the abbe numbers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens, respectively.
Further, the imaging lens further comprises a diaphragm, and the position of the diaphragm is any one of the following two conditions; the diaphragm is arranged in front of the first lens; or the diaphragm is arranged between the first lens and the second lens.
Further, the maximum field angle FOV of the imaging lens satisfies the conditional expression:
75°<FOV<85°。
further, the f-number Fno of the imaging lens satisfies the conditional expression:
1.5≤Fno≤1.55。
compared with the prior art, the imaging lens has at least the following advantages:
1. seven plastic aspherical lenses are adopted in the camera lens, so that the production cost of the lens can be effectively reduced, the volume of the lens can be reduced, and better optical imaging quality can be provided;
2. the imaging lens is provided with a diaphragm, the position of the diaphragm can be arranged in front of the first lens or between the first lens and the second lens, stray light can be reduced due to the action of the diaphragm, and the imaging quality of the lens is improved;
3. the aperture of the camera lens can reach f/1.5, the background blurring effect is better when the camera lens shoots close range, and the shooting imaging quality is better in dim environment.
Advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic configuration diagram of an imaging lens according to a first embodiment of the present invention;
fig. 2a is a field curve diagram of an imaging lens according to a first embodiment of the present invention;
fig. 2b is a distortion graph of the imaging lens of the first embodiment of the present invention;
fig. 3 is a lateral chromatic aberration diagram of the imaging lens of the first embodiment of the present invention;
fig. 4 is a schematic structural view of an imaging lens according to a second embodiment of the present invention;
FIG. 5a is a graph of field curvature of an imaging lens according to a second embodiment of the present invention;
fig. 5b is a distortion graph of an imaging lens according to a second embodiment of the present invention;
fig. 6 is a lateral chromatic aberration diagram of an imaging lens according to a second embodiment of the present invention;
fig. 7 is a schematic structural view of an imaging lens according to a third embodiment of the present invention;
FIG. 8a is a graph of field curvature of an imaging lens according to a third embodiment of the present invention;
fig. 8b is a distortion graph of an imaging lens according to a third embodiment of the present invention;
fig. 9 is a lateral chromatic aberration diagram of an imaging lens of a third embodiment of the present invention;
fig. 10 is a schematic structural view of an imaging lens according to a fourth embodiment of the present invention;
FIG. 11a is a graph of field curvature of an imaging lens according to a fourth embodiment of the present invention;
fig. 11b is a distortion graph of an imaging lens according to a fourth embodiment of the present invention;
fig. 12 is a lateral chromatic aberration diagram of an imaging lens of a fourth embodiment of the present invention.
Description of the main reference signs
The invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1, an imaging lens provided in a first embodiment of the present invention includes, in order from an object side to an image side along an optical axis:
the first lens 10 having optical power, wherein the first lens 10 is a plastic aspheric lens with a meniscus shape and a concave surface facing the imaging surface 90, and specifically, the optical power of the first lens 10 may be positive optical power or negative optical power;
the second lens 20 having optical power, wherein the second lens 20 is a plastic aspheric lens with a convex surface facing the object side near optical axis (not shown), and specifically, the optical power of the second lens 20 may be positive optical power or negative optical power;
a third lens 30 having negative optical power, wherein the third lens 30 is a plastic aspherical lens having a meniscus shape and a concave surface facing the imaging surface 90;
a fourth lens 40 having positive optical power, the fourth lens 40 being a biconvex plastic aspheric lens;
a fifth lens 50 having negative optical power, wherein the fifth lens 50 is a plastic aspheric lens with a meniscus shape and a convex surface facing the imaging surface 90;
a sixth lens 60 with positive focal power, wherein the sixth lens 60 is a plastic aspheric lens with a convex surface facing the object side near optical axis, and at least one inflection point is arranged on the object side of the sixth lens 60;
a seventh lens 70 with negative focal power, wherein the seventh lens 70 is a plastic aspheric lens with a meniscus shape and a concave surface facing the imaging surface 90 at a paraxial region, and at least one inflection point is arranged on the imaging surface of the seventh lens 70;
a filter 80, specifically, in this embodiment, the filter 80 is an infrared cut filter; wherein, the distance TTL (i.e. the total optical length) between the object side surface of the first lens element 10 and the optical axis of the imaging surface 90 is half of the diagonal length ImgH of the effective pixel area on the imaging surface 90, which satisfies the following condition: TTL/ImgH <1.50 (1)
The condition (1) limits the total length of the lens system of the imaging lens and ensures that the system has a sufficiently good imaging quality, and when the value of the condition TTL/ImgH exceeds the upper limit, the total length of the entire lens system is large, and the purpose of miniaturizing and compacting the system cannot be achieved.
Further, the imaging lens satisfies the conditional expression:
-1.85<(R3-R4)/(R3+R4)<0.25 (2)
where R3 represents a radius of curvature of the object side surface of the second lens 20, R4 represents a radius of curvature of the imaging surface of the second lens 20, and condition (2) defines the shape of the second lens 20. When the value of the condition (2) exceeds the upper limit, the curvature of field and distortion excessively increase in the positive direction, and correction is difficult; in contrast, when the value of the condition (2) exceeds the lower limit, the curvature of field and distortion excessively increase in the negative direction, and correction becomes difficult.
Further, the imaging lens satisfies the following conditional expression:
-6.50<(R5+R6)/(R5-R6)<3.00 (3)
0.35<(R7+R8)/(R7-R8)<0.75 (4)
-5.20<(R9+R10)/(R9-R10)<-2.10 (5)
wherein, R5 represents the radius of curvature of the object side surface of the third lens element 30, R6 represents the radius of curvature of the imaging surface of the third lens element 30, R7 represents the radius of curvature of the object side surface of the fourth lens element 40, R8 represents the radius of curvature of the imaging surface of the fourth lens element 40, R9 represents the radius of curvature of the object side surface of the fifth lens element 50, and R10 represents the radius of curvature of the imaging surface of the fifth lens element 50, thereby satisfying the conditions (3), (4) and (5) and effectively shortening the total optical length of the lens and promoting miniaturization of the lens.
Further, the imaging lens satisfies the following conditional expression:
wherein ,represents the optical power of the whole lens system, +.>Represents the optical power of the first lens 10, +.>Represents the optical power of the second lens 20, +.>Represents the optical power of the third lens 30, +.>Represents the optical power of the fourth lens 40, +.>Representing the power of the fifth lens 50, condition (6) effectively distributes the power of the system, contributing to shortening the overall system optical length and correction of aberrations; condition (7) effectively distributes the optical power of the system, facilitating control of the angle of view; condition (8) effectively distributes the optical power of the system while not creating additional higher order aberrations; condition (9) is effectiveThe optical power of the earth distribution system can be balanced in correcting the compression of the aberration and the total optical length; the condition (10) effectively distributes the optical power of the system without creating additional chromatic aberration.
Further, the imaging lens satisfies the following conditional expression:
0.90<T12/T23<5.70 (11)
0.50<T2/T3<2.30 (12)
wherein T12 represents the distance between the first lens element 10 and the second lens element 20 on the optical axis, T2 represents the center thickness of the second lens element 20, T23 represents the distance between the second lens element 20 and the third lens element 30 on the optical axis, and T3 represents the center thickness of the third lens element 30, satisfying the conditions (11) and (12) facilitates lens assembly, and can correct astigmatism.
Further, the imaging lens satisfies the following conditional expression:
2.0<(T12/T23)+(T34/T45)+(T56/T67)<7.0 (13)
wherein T12 represents the distance between the first lens 10 and the second lens 20 on the optical axis, T23 represents the distance between the second lens 20 and the third lens 30 on the optical axis, T34 represents the distance between the third lens 30 and the fourth lens 40 on the optical axis, T45 represents the distance between the fourth lens 40 and the fifth lens 50 on the optical axis, T56 represents the distance between the fifth lens 50 and the sixth lens 60 on the optical axis, and T67 represents the distance between the sixth lens 60 and the seventh lens 70 on the optical axis, the optical total length of the lens can be effectively shortened by satisfying the condition (13), and the miniaturization of the lens can be promoted.
Further, the imaging lens satisfies the following conditional expression:
50<V1<60 (14)
20<V2<60 (15)
20<V3<60 (16)
50<V4<60 (17)
20<V5<30 (18)
50<V6<60 (19)
50<V7<60 (20)
wherein V1, V2, V3, V4, V5, V6, V7 represent the abbe numbers of the first lens 10, the second lens, the third lens 20, the third lens 30, the fourth lens 40, the fifth lens 50, the sixth lens 60, and the seventh lens 70, respectively, and conditions (14) - (20) are achromatic conditions. When the value exceeds the lower limit, the chromatic aberration is larger and the correction is difficult; when the value exceeds the upper limit, the material selection is not favored.
Further, in the present embodiment, the first lens 10 is provided with a diaphragm 11 before, and the diaphragm 11 may also be disposed between the first lens 10 and the second lens 20.
Further, the maximum field angle FOV of the imaging lens satisfies the conditional expression:
75°<FOV<85°。
further, the f-number Fno of the imaging lens satisfies the conditional expression:
1.5≤Fno≤1.55。
each aspheric surface expression of the imaging lens is as follows:
wherein z is the distance sagittal height from the aspherical surface vertex when the aspherical surface is at a position of height h along the optical axis direction, c is the paraxial radius of curvature of the surface, k is the conic coefficient conic, A 2i The aspherical surface profile coefficient of the 2 i-th order.
The invention is further illustrated in the following examples. In each of the following embodiments, the thickness, radius of curvature, concave-convex shape portion of each lens in the imaging lens are different, and specific differences can be seen from the parameter table in each embodiment. The following examples are merely preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the following examples, and any other changes, substitutions, combinations or simplifications that do not depart from the gist of the present invention are intended to be equivalent substitutes within the scope of the present invention.
The structure of the imaging lens of the present embodiment is shown in fig. 1, and the field curvature and distortion curve chart and the lateral chromatic aberration curve chart of the imaging lens of the present embodiment are shown in fig. 2a, 2b and 3, respectively.
Specifically, the design parameters of the imaging lens of the present embodiment are shown in table 1:
TABLE 1
The aspherical parameters of each lens in the imaging lens of the present embodiment are shown in table 2:
TABLE 2
Example 2
A structural diagram of the imaging lens in the present embodiment is shown in fig. 4. The field curvature and distortion curve curves and the lateral chromatic aberration curve curves of the imaging lens of the present embodiment are shown in fig. 5a, 5b and 6, respectively.
Embodiment 2 has substantially the same technical effects as those achieved in embodiment 1, and is different in design parameters of the imaging lens in embodiment 2, specifically, the design parameters of the imaging lens in this embodiment are shown in table 3:
TABLE 3 Table 3
The aspherical parameters of each lens in the imaging lens of the present embodiment are shown in table 4:
TABLE 4 Table 4
Example 3
As shown in fig. 7, the image pickup lens of the present embodiment has a configuration in which both the object side surface and the imaging surface of the second lens 20 are convex, unlike the imaging surface of the second lens 20 of embodiment 1. The field curvature and distortion curve curves and the lateral chromatic aberration curve curves of the imaging lens of the present embodiment are shown in fig. 8a, 8b and 9, respectively.
Embodiment 3 has substantially the same technical effects as embodiment 1, and is different in design parameters, specifically, the design parameters of the imaging lens of this embodiment are shown in table 5:
TABLE 5
The aspherical parameters of each lens in the imaging lens of the present embodiment are shown in table 6:
TABLE 6
Example 4
As shown in fig. 10, the configuration of the imaging lens in this embodiment is substantially the same as that in embodiment 3. The field curvature and distortion curve curves and the spherical aberration curve curves of the imaging lens of the present embodiment are shown in fig. 11a, 11b and 12, respectively.
The technical effects achieved in embodiment 4 are substantially the same as those achieved in embodiment 3, and the difference is that the design parameters are different, specifically, the design parameters of the imaging lens of this embodiment are shown in table 7:
TABLE 7
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The aspherical parameters of each lens in the imaging lens of the present embodiment are shown in table 8:
TABLE 8
Further, table 9 is the above 4 embodiments and their corresponding optical characteristics, including the focal length f, f-stop f no, the total optical length TTL and the angle of view 2θ of the imaging lens, and the numerical values corresponding to each of the foregoing conditional expressions.
TABLE 9
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. An imaging lens, characterized by comprising, in order from an object side to an image side along an optical axis:
a meniscus-type first lens with optical power, the object side surface of which is a convex surface;
a second lens having optical power, the object-side surface of which is convex at the paraxial region;
a meniscus third lens with negative focal power, whose image side surface is concave;
a biconvex fourth lens having positive optical power;
a meniscus fifth lens with negative focal power, whose image side surface is a convex surface;
a sixth lens with positive focal power, wherein the object side surface of the sixth lens is convex at the paraxial region, and at least one inflection point is arranged on the object side surface of the sixth lens;
a meniscus seventh lens with negative focal power, whose image side surface is concave at the paraxial region, and whose image side surface is provided with at least one inflection point;
a light filter;
the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all plastic aspherical lenses;
wherein, the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface is half of the diagonal length ImgH of the effective pixel area on the imaging surface, which satisfies the following conditional expression:
TTL/ImgH<1.50；
the imaging lens satisfies the following conditional expression:
2.0<(T12/T23)+(T34/T45)+(T56/T67)<7.0；
wherein T12 represents an optical axis distance between the first lens and the second lens, T23 represents an optical axis distance between the second lens and the third lens, T34 represents an optical axis distance between the third lens and the fourth lens, T45 represents an optical axis distance between the fourth lens and the fifth lens, T56 represents an optical axis distance between the fifth lens and the sixth lens, and T67 represents an optical axis distance between the sixth lens and the seventh lens.
2. The imaging lens according to claim 1, wherein the imaging lens satisfies a conditional expression:
-1.85<(R3-R4)/(R3+R4)<0.25；
wherein R3 represents a radius of curvature of the object side surface of the second lens, and R4 represents a radius of curvature of the imaging surface of the second lens.
3. The imaging lens according to claim 1, wherein the imaging lens satisfies a conditional expression:
-6.50<(R5+R6)/(R5-R6)<3.00，
0.35<(R7+R8)/(R7-R8)<0.75，
-5.20<(R9+R10)/(R9-R10)<-2.10；
wherein R5 represents a radius of curvature of the third lens object-side surface, R6 represents a radius of curvature of the third lens imaging surface, R7 represents a radius of curvature of the fourth lens object-side surface, R8 represents a radius of curvature of the fourth lens imaging surface, R9 represents a radius of curvature of the fifth lens object-side surface, and R10 represents a radius of curvature of the fifth lens imaging surface.
4. The imaging lens according to claim 1, wherein the imaging lens satisfies a conditional expression:
wherein ,represents the optical power of the whole lens system, +.>Representing the optical power of said first lens, < >>Representing the optical power of said second lens, < >>Representing the optical power of said third lens, < >>Representing the optical power of said fourth lens, < >>Representing the optical power of the fifth lens.
5. The imaging lens according to claim 1, wherein the imaging lens satisfies a conditional expression:
0.90<T12/T23<5.70；
0.50<T2/T3<2.30；
wherein T12 represents a distance between the first lens and the second lens on the optical axis, T2 represents a center thickness of the second lens, T23 represents a distance between the second lens and the third lens on the optical axis, and T3 represents a center thickness of the third lens.
6. The imaging lens according to claim 1, wherein the imaging lens satisfies a conditional expression:
50<V1<60；
20<V2<60；
20<V3<60；
50<V4<60；
20<V5<30；
50<V6<60；
50<V7<60；
wherein V1, V2, V3, V4, V5, V6, V7 represent the abbe numbers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens, respectively.
7. The imaging lens according to claim 1, further comprising a diaphragm, the position of the diaphragm being either;
the diaphragm is arranged in front of the first lens; or (b)
The diaphragm is arranged between the first lens and the second lens.
8. The imaging lens according to any one of claims 1 to 7, wherein a maximum field angle FOV of the imaging lens satisfies a conditional expression:
75°<FOV<85°。
9. the imaging lens according to any one of claims 1 to 7, wherein an f-number Fno of the imaging lens satisfies a conditional expression:
1.5≤Fno≤1.55。
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| WO2018209855A1 (en) * | 2017-05-15 | 2018-11-22 | 浙江舜宇光学有限公司 | Optical imaging system |
| TWI655474B (en) | 2017-12-22 | 2019-04-01 | 大立光電股份有限公司 | Image taking optical lens, image capturing device and electronic device |
| CN110703416B (en) * | 2017-12-29 | 2021-08-24 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| TWI651565B (en) | 2018-02-22 | 2019-02-21 | Largan Precision Co.,Ltd. | Optical imaging lens assembly, image capturing unit and electronic device |
| TWI660196B (en) | 2018-03-30 | 2019-05-21 | 大立光電股份有限公司 | Photographing optical lens system, image capturing unit and electronic device |
| JP6814521B2 (en) * | 2018-08-21 | 2021-01-20 | カンタツ株式会社 | Imaging lens |
| CN109407277B (en) * | 2018-12-06 | 2024-04-23 | 浙江舜宇光学有限公司 | Optical imaging system |
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| CN110471164B (en) * | 2019-07-03 | 2024-05-31 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110579864B (en) * | 2019-10-29 | 2024-05-14 | 浙江舜宇光学有限公司 | Optical imaging lens |
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| CN106324797A (en) * | 2015-06-29 | 2017-01-11 | 佳能企业股份有限公司 | Optical lens |
| CN106443987A (en) * | 2015-08-11 | 2017-02-22 | 大立光电股份有限公司 | Optical system for image pickup, image capturing device and electronic device |
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| CN107300751A (en) | 2017-10-27 |
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