CN112147764A - Optical lens and imaging apparatus - Google Patents
Optical lens and imaging apparatus Download PDFInfo
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- CN112147764A CN112147764A CN202011325126.8A CN202011325126A CN112147764A CN 112147764 A CN112147764 A CN 112147764A CN 202011325126 A CN202011325126 A CN 202011325126A CN 112147764 A CN112147764 A CN 112147764A
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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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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Abstract
The invention discloses an optical lens and imaging equipment, the optical lens comprises the following components in sequence from an object side to an imaging surface: a first lens having a negative refractive power, an object-side surface of which is convex; the image side surface of the second lens is a concave surface; a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; a diaphragm; the fourth lens with positive focal power has a convex image side surface and a convex object side surface; a fifth lens element having a positive optical power, an object-side surface being concave at a paraxial region, and an image-side surface being convex at a paraxial region; the sixth lens with negative focal power has a concave image side surface and a concave object side surface; a seventh lens element with negative optical power having a convex object-side surface at the paraxial region and a concave image-side surface at the paraxial region. The optical lens adopts seven glass-plastic mixed lenses and adopts specific surface shapes and matching, so that the picture captured by the optical system has more spatial depth and more spatial information.
Description
Technical Field
The present invention relates to the field of lens imaging technologies, and in particular, to an optical lens and an imaging device.
Background
At present, along with the popularization of portable electronic devices (such as smart phones, tablets and cameras) and the popularity of social, video and live broadcast software, people have higher and higher liking degree for photography, and a camera lens becomes a standard of the electronic devices and even becomes an index of primary consideration when consumers buy the electronic devices.
With the continuous development of mobile information technology, portable electronic devices such as mobile phones are also developing in the directions of light weight, thinness, ultra high definition imaging, and the like, which puts higher demands on camera lenses mounted on the portable electronic devices. The wide-angle lens has wide application range, is very useful for shooting a large-range scene at a short distance, and is easy to obtain a picture with strong visual impact, so the wide-angle lens can be widely applied to electronic equipment such as a mobile phone and the like.
However, most wide-angle lenses in the market have large volume and low pixels, and are difficult to satisfy the requirements of light weight, thinness and high definition imaging of portable electronic devices.
Disclosure of Invention
To this end, an object of the present invention is to provide an optical lens and an imaging apparatus for solving the above problems.
The embodiment of the invention implements the above object by the following technical scheme.
In a first aspect, the present invention provides an optical lens, comprising, in order from an object side to an image plane along an optical axis: the first lens with negative focal power has a convex object-side surface and a concave image-side surface; the image side surface of the second lens is a concave surface; a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; a diaphragm; a fourth lens having a positive refractive power, both the object-side surface and the image-side surface of the fourth lens being convex; a fifth lens element with positive optical power having a concave object-side surface at paraxial region and a convex image-side surface; a sixth lens element with negative optical power, having a concave object-side surface and a concave image-side surface at the paraxial region; a seventh lens element with negative optical power, having a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region; the first lens and the sixth lens are glass aspheric lenses, and the second lens, the third lens, the fourth lens, the fifth lens and the seventh lens are plastic aspheric lenses.
In a second aspect, the present invention provides an imaging apparatus, comprising an imaging element and the optical lens provided in the first aspect, wherein the imaging element is configured to convert an optical image formed by the optical lens into an electrical signal.
Compared with the prior art, the optical lens and the imaging equipment provided by the invention have the advantages that seven lenses with specific refractive power are adopted, and the aspheric lens matching of glass-plastic mixing is adopted, so that the lens has a more compact structure while meeting high pixel, the lens can better realize the miniaturization and high pixel balance, meanwhile, a larger-area scene can be shot, great convenience is brought to later cutting, in addition, the optical lens provided by the invention enhances the depth and space of an imaging picture, and has better imaging quality.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an optical lens system according to a first embodiment of the present invention;
FIG. 2 is a field curvature graph of an optical lens according to a first embodiment of the present invention;
FIG. 3 is a diagram illustrating a distortion curve of an optical lens according to a first embodiment of the present invention;
FIG. 4 is a graph of on-axis spherical aberration of an optical lens according to a first embodiment of the present invention;
FIG. 5 is a field curvature graph of an optical lens according to a second embodiment of the present invention;
FIG. 6 is a diagram showing a distortion curve of an optical lens in a second embodiment of the present invention;
FIG. 7 is a graph of on-axis spherical aberration of an optical lens according to a second embodiment of the present invention;
FIG. 8 is a field curvature graph of an optical lens according to a third embodiment of the present invention;
fig. 9 is a distortion graph of an optical lens in a third embodiment of the present invention;
FIG. 10 is a graph of on-axis spherical aberration of an optical lens according to a third embodiment of the present invention;
FIG. 11 is a field curvature graph of an optical lens according to a fourth embodiment of the present invention;
fig. 12 is a distortion graph of an optical lens in a fourth embodiment of the present invention;
FIG. 13 is a graph of on-axis spherical aberration of an optical lens according to a fourth embodiment of the present invention;
fig. 14 is a schematic configuration diagram of an image forming apparatus provided in a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides an optical lens, which sequentially comprises the following components from an object side to an imaging surface along an optical axis: the first lens with negative focal power has a convex object-side surface and a concave image-side surface; the image side surface of the second lens is a concave surface; a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; a diaphragm; a fourth lens having a positive refractive power, both the object-side surface and the image-side surface of the fourth lens being convex; a fifth lens element with positive optical power having a concave object-side surface at paraxial region and a convex image-side surface; a sixth lens element with negative optical power, having a concave object-side surface and a concave image-side surface at the paraxial region; a seventh lens element with negative optical power, having a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region; the first lens and the sixth lens are glass aspheric lenses, and the second lens, the third lens, the fourth lens, the fifth lens and the seventh lens are plastic aspheric lenses. The first lens and the sixth lens are glass aspheric lenses, and the second lens, the third lens, the fourth lens, the fifth lens and the seventh lens are plastic aspheric lenses.
In some embodiments, the optical lens satisfies the following conditional expression:
-5.5<(f1+f2+f3)/f<-1.0；（1）
where f1 denotes a focal length of the first lens, f2 denotes a focal length of the second lens, f3 denotes a focal length of the third lens, and f denotes a focal length of the optical lens. The f-theta distortion of the optical system can be effectively improved by reasonably controlling the focal length ratio of the lens in front of the diaphragm when the conditional expression (1) is satisfied.
In some embodiments, the optical lens satisfies the following conditional expression:
0.20<(ET1+ET2+ET3)/(CT1+CT2+CT3)<0.50；（2）
where ET1 denotes an edge thickness of the first lens, ET2 denotes an edge thickness of the second lens, ET3 denotes an edge thickness of the third lens, CT1 denotes a center thickness of the first lens, CT2 denotes a center thickness of the second lens, and CT3 denotes a center thickness of the third lens. The condition formula (2) is satisfied, the light turning change of the light entering the lens can be reduced, the high-level aberration introduction system is reduced, and the design difficulty is reduced.
In some embodiments, the optical lens satisfies the following conditional expression:
-1.5<(CT6-ET6)/CT6<-1.0；（3）
-0.30mm<SAG61-SAG62<0.05mm；（4）
where CT6 denotes a center thickness of the sixth lens, ET6 denotes an edge thickness of the sixth lens, SAG61 denotes an edge rise of an object side surface of the sixth lens, and SAG62 denotes an edge rise of an image side surface of the sixth lens. The conditional expressions (3) and (4) are satisfied, and the surface shape of the sixth lens is reasonably arranged, so that the field curvature can be effectively improved, the imaging quality of the system is improved, and the optical system has better resolving power.
In some embodiments, the optical lens satisfies the following conditional expression:
0.8<f4/f<1.0；（5）
where f4 denotes a focal length of the fourth lens, and f denotes a focal length of the optical lens. The projection height of the light rays on the fourth lens is increased by satisfying the conditional expression (5), so that the spherical aberration can be effectively improved, and the central imaging quality is enabled to be the best.
In some embodiments, the optical lens satisfies the following conditional expression:
1.10<R31/R32<2.40；（6）
where R31 denotes a curvature of an object-side surface of the third lens, and R32 denotes a curvature of an image-side surface of the third lens. And the conditional expression (6) is satisfied, so that the third lens can provide positive focal power to converge light, the total length of the system is reduced, and the miniaturization of the lens is facilitated.
In some embodiments, the optical lens satisfies the following conditional expression:
0.95<(ET5+ET6+ET7)/(CT5+CT6+CT7)<1.10；（7）
where ET5 denotes an edge thickness of the fifth lens, ET6 denotes an edge thickness of the sixth lens, ET7 denotes an edge thickness of the seventh lens, CT5 denotes a center thickness of the fifth lens, CT6 denotes a center thickness of the sixth lens, and CT7 denotes a center thickness of the seventh lens. And the conditional expression (7) is satisfied, so that the lenses of the fifth lens, the sixth lens and the seventh lens are distributed uniformly and have smooth shapes, the lens forming is facilitated, and the mass production rate of products is improved.
In some embodiments, the optical lens satisfies the following conditional expression:
0mm<SAG11<0.12mm；（8）
where SAG11 represents the edge rise of the object side of the first lens. The object side of the first lens tends to be flat when the conditional expression (8) is satisfied, and the first lens is used as a mobile phone camera shooting front end cover plate, so that mobile phone components can be reduced, and the requirement for reducing cost is met.
In some embodiments, the optical lens satisfies the following conditional expression:
ND6≥1.66；（9）
VD6≤18.8；（10）
where ND6 denotes a refractive index of the sixth lens, and VD6 denotes an abbe number of the sixth lens. The conditional expressions (9) and (10) are satisfied, the material selection of the sixth lens can be reasonably limited, and chromatic aberration and the resolution of the system can be effectively improved.
In some embodiments, the optical lens satisfies the following conditional expression:
140°<FOV<160°；（11）
3.8mm<ImgH<4.2mm；（12）
where FOV represents the maximum field angle of the optical lens, and ImgH represents the maximum half-image height of the optical lens on the imaging plane. The conditional expressions (11) and (12) are met, which shows that the optical lens has a wide viewing angle and a large imaging surface, can shoot a scene with a larger area, and meets the use requirements of the portable electronic equipment.
The invention is further illustrated below in the following examples. In various embodiments, the thickness, the curvature radius, and the material selection of each lens in the optical lens are different, and the specific differences can be referred to in the parameter tables of the various embodiments. The following examples are only preferred embodiments of the present invention, but the embodiments of the present invention are not limited only by the following examples, and any other changes, substitutions, combinations or simplifications which do not depart from the innovative points of the present invention should be construed as being equivalent substitutions and shall be included within the scope of the present invention.
The surface shape of the aspheric lens in each embodiment of the invention satisfies the following equation:
wherein z is the distance rise from the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction, c is the paraxial curvature radius of the surface, k is the quadric coefficient, A2iIs the aspheric surface type coefficient of 2i order.
First embodiment
Referring to fig. 1, a schematic structural diagram of an optical lens 100 according to a first embodiment of the present invention is shown, where the optical lens 100 sequentially includes, from an object side to an image plane along an optical axis: a first lens L1, a second lens L2, a third lens L3, a stop ST, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an infrared filter G1.
The first lens L1 has negative power, the object-side surface S1 of the first lens is a convex surface close to a plane, and the image-side surface S2 of the first lens is a concave surface;
the second lens L2 has negative power, the object-side surface S3 of the second lens is concave at the paraxial region, and the image-side surface S4 of the second lens is concave;
the third lens L3 has positive focal power, the object-side surface S5 of the third lens is convex, and the image-side surface S6 of the third lens is concave;
the fourth lens L4 has positive optical power, and both the object-side surface S7 and the image-side surface S8 of the fourth lens are convex;
the fifth lens L5 has positive optical power, the object-side surface S9 of the fifth lens is concave at the paraxial region, and the image-side surface S10 of the fifth lens is convex;
the sixth lens L6 has negative power, the object-side surface S11 of the sixth lens is concave, and the image-side surface S12 of the sixth lens is concave at the paraxial region;
the seventh lens element L7 has negative power, with its object-side surface S13 being convex at the paraxial region and its image-side surface S14 being concave at the paraxial region.
In some embodiments, the first lens L1 and the sixth lens L6 are glass aspheric lenses; the second lens element L2, the third lens element L3, the fourth lens element L4, the fifth lens element L5 and the seventh lens element L7 are all plastic aspheric lenses, or all plastic non-curved lenses.
The parameters related to each lens in the optical lens 100 provided in this embodiment are shown in table 1.
TABLE 1
The surface shape coefficients of the aspherical surfaces of the optical lens 100 in the present embodiment are shown in table 2.
TABLE 2
Referring to fig. 2, fig. 3 and fig. 4, a field curvature graph, a distortion graph and an on-axis spherical aberration graph of the optical lens 100 of the first embodiment are respectively shown.
The field curvature curve in fig. 2 indicates the degree of curvature of the meridional image plane and the sagittal image plane, and the horizontal axis indicates the amount of displacement (unit: mm) and the vertical axis indicates the angle of view (unit: degree). As can be seen from fig. 2, the field curvature of the meridional image plane and the sagittal image plane is controlled within ± 0.3mm, which indicates that the field curvature of the optical lens is well corrected.
The distortion curve of fig. 3 represents the distortion at different image heights on the image forming plane, in which the horizontal axis represents the percentage of f- θ distortion and the vertical axis represents the angle of view (unit: degree). As can be seen from fig. 3, the f- θ distortion at different image heights on the image plane is controlled within 10%, which indicates that the distortion of the optical lens is well corrected.
The on-axis point spherical aberration curve of fig. 4 represents the aberration on the optical axis at the imaging plane, the horizontal axis in the figure represents the offset amount (unit: mm), and the vertical axis represents the normalized tone-n radius. As can be seen from fig. 4, the offset of the on-axis point spherical aberration is controlled within ± 0.02mm, which shows that the optical lens can effectively correct the aberration of the fringe field and the secondary spectrum of the entire image plane.
Second embodiment
The optical lens in this embodiment has substantially the same structure as the optical lens 100 in the first embodiment, except that: the radius of curvature and material selection of each lens are different.
The present embodiment provides the relevant parameters of each lens in the optical lens as shown in table 3.
TABLE 3
The surface shape coefficients of the aspherical surfaces of the optical lens in this embodiment are shown in table 4.
TABLE 4
Please refer to fig. 5, 6 and 7, which respectively show a field curvature graph, a distortion graph and an on-axis spherical aberration graph of the optical lens according to the second embodiment.
Fig. 5 shows the degree of curvature of the meridional image plane and the sagittal image plane, and it can be seen from fig. 5 that the field curvature of the meridional image plane and the sagittal image plane is controlled within ± 0.3mm, which indicates that the field curvature correction of the optical lens is good.
Fig. 6 shows the distortion at different image heights on the imaging plane, and it can be seen from fig. 6 that the f- θ distortion at different image heights on the imaging plane is controlled to be within 10%, which shows that the distortion of the optical lens is corrected well.
Fig. 7 shows the aberration on the optical axis at the imaging plane, and it can be seen from fig. 7 that the offset of the on-axis point spherical aberration is controlled within ± 0.05mm, which shows that the optical lens can effectively correct the aberration of the fringe field and the secondary spectrum of the entire image plane.
Third embodiment
The structure of the optical lens in this embodiment is substantially the same as that of the optical lens 100 in the first embodiment, except that: the radius of curvature and material selection of each lens are different.
The relevant parameters of each lens in the optical lens provided by the present embodiment are shown in table 5.
TABLE 5
The surface shape coefficients of the aspherical surfaces of the optical lens in this embodiment are shown in table 6.
TABLE 6
Please refer to fig. 8, 9 and 10, which respectively show a field curvature graph, a distortion graph and an on-axis spherical aberration graph of the optical lens according to the third embodiment.
Fig. 8 shows the degree of curvature of the meridional image plane and the sagittal image plane, and it can be seen from fig. 8 that the field curvature of the meridional image plane and the sagittal image plane is controlled within ± 0.1mm, which indicates that the field curvature correction of the optical lens is good.
Fig. 9 shows the distortion at different image heights on the imaging plane, and it can be seen from fig. 9 that the f- θ distortion at different image heights on the imaging plane is controlled to be within 10%, which shows that the distortion of the optical lens is corrected well.
Fig. 10 shows the aberration on the optical axis at the image plane, and it can be seen from fig. 10 that the offset of the on-axis point spherical aberration is controlled within ± 0.02mm, which shows that the optical lens can effectively correct the aberration of the fringe field and the secondary spectrum of the entire image plane.
Fourth embodiment
The structure of the optical lens in this embodiment is substantially the same as that of the optical lens 100 in the first embodiment, except that: the radius of curvature and material selection of each lens are different.
The relevant parameters of each lens in the optical lens in this embodiment are shown in table 7.
TABLE 7
The surface shape coefficients of the aspherical surfaces of the optical lens in this embodiment are shown in table 8.
TABLE 8
Please refer to fig. 11, 12 and 13, which respectively show a field curvature graph, a distortion graph and an on-axis spherical aberration graph of the optical lens according to the fourth embodiment.
Fig. 11 shows the degree of curvature of the meridional image plane and the sagittal image plane, and it can be seen from fig. 11 that the field curvature of the meridional image plane and the sagittal image plane is controlled within ± 0.3mm, which indicates that the field curvature correction of the optical lens is good.
Fig. 12 shows the distortion at different image heights on the imaging plane, and it can be seen from fig. 12 that the f- θ distortion at different image heights on the imaging plane is controlled to be within 10%, which shows that the distortion of the optical lens is corrected well.
Fig. 13 shows the aberration on the optical axis at the imaging plane, and it can be seen from fig. 13 that the offset of the on-axis point spherical aberration is controlled within ± 0.05mm, which shows that the optical lens can effectively correct the aberration of the fringe field and the secondary spectrum of the entire image plane.
Table 9 shows the optical characteristics corresponding to the above four embodiments, which mainly include the focal length F, F #, total optical length TTL, and field angle FOV of the system, and the values corresponding to each conditional expression.
TABLE 9
In summary, the optical lens provided by the invention has the following advantages:
(1) two glass lenses and five plastic lenses are matched, and through reasonable focal power combination and specific surface shape matching, the lens can shoot and obtain more spatial information, the definition of the picture is higher, and the lens can be matched with an imaging chip with 4800 ten thousand pixels.
(2) In addition, the optical lens designed by the method enhances the depth and space of an imaging picture and has better imaging quality.
Fifth embodiment
As shown in fig. 14, a schematic structural diagram of an imaging apparatus 500 is provided for a fifth embodiment of the present invention, where the imaging apparatus 500 includes an imaging element 510 and an optical lens (e.g., the optical lens 100) in any of the embodiments described above. The imaging element 510 may be a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and may also be a CCD (Charge Coupled Device) image sensor.
The imaging device 500 may be a smart phone, a tablet computer, a camera, or any other terminal device with the optical lens mounted thereon.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. An optical lens, comprising, in order from an object side to an image plane along an optical axis: the lens comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens and a seventh lens;
the first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has negative focal power, and the image side surface of the second lens is a concave surface;
the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;
the fourth lens has positive focal power, and both the object-side surface and the image-side surface of the fourth lens are convex surfaces;
the fifth lens element has a positive optical power, an object-side surface of the fifth lens element being concave at a paraxial region, and an image-side surface of the fifth lens element being convex;
the sixth lens element has a negative optical power, the sixth lens element has a concave object-side surface, and the sixth lens element has a concave image-side surface at a paraxial region;
the seventh lens element has a negative optical power, the seventh lens element having a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region;
the first lens and the sixth lens are glass aspheric lenses, and the second lens, the third lens, the fourth lens, the fifth lens and the seventh lens are plastic aspheric lenses.
2. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
-5.5<(f1+f2+f3)/f<-1.0；
wherein f1 denotes a focal length of the first lens, f2 denotes a focal length of the second lens, f3 denotes a focal length of the third lens, and f denotes a focal length of the optical lens.
3. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
0.20<(ET1+ET2+ET3)/(CT1+CT2+CT3)<0.50；
wherein ET1 represents an edge thickness of the first lens, ET2 represents an edge thickness of the second lens, ET3 represents an edge thickness of the third lens, CT1 represents a center thickness of the first lens, CT2 represents a center thickness of the second lens, and CT3 represents a center thickness of the third lens.
4. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
-1.5<(CT6-ET6)/CT6<-1.0；
-0.30mm<SAG61-SAG62<0.05mm；
wherein CT6 represents a center thickness of the sixth lens, ET6 represents an edge thickness of the sixth lens, SAG61 represents an edge rise of an object side surface of the sixth lens, and SAG62 represents an edge rise of an image side surface of the sixth lens.
5. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
0.8<f4/f<1.0；
where f4 denotes a focal length of the fourth lens, and f denotes a focal length of the optical lens.
6. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
1<R31/R32<2.4；
wherein R31 denotes a curvature of an object side surface of the third lens, and R32 denotes a curvature of an image side surface of the third lens.
7. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
0.95<(ET5+ET6+ET7)/(CT5+CT6+CT7)<1.10；
wherein ET5 denotes an edge thickness of the fifth lens, ET6 denotes an edge thickness of the sixth lens, ET7 denotes an edge thickness of the seventh lens, CT5 denotes a center thickness of the fifth lens, CT6 denotes a center thickness of the sixth lens, and CT7 denotes a center thickness of the seventh lens.
8. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
0mm<SAG11<0.12mm；
wherein SAG11 represents the edge rise of the object side of the first lens.
9. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
ND6≥1.66；
VD6≤18.8；
where ND6 denotes a refractive index of the sixth lens, and VD6 denotes an abbe number of the sixth lens.
10. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
140°<FOV<160°；
8mm<ImgH<4.2mm；
wherein, FOV represents the maximum field angle of the optical lens, and ImgH represents the maximum half-image height of the optical lens on an imaging surface.
11. An imaging apparatus comprising the optical lens according to any one of claims 1 to 10 and an imaging element for converting an optical image formed by the optical lens into an electric signal.
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| PCT/CN2021/132263 WO2022111437A1 (en) | 2020-11-24 | 2021-11-23 | Optical lens and imaging device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112799219A (en) * | 2021-03-22 | 2021-05-14 | 江西晶超光学有限公司 | Optical lens group, camera module and electronic equipment |
| WO2022111437A1 (en) * | 2020-11-24 | 2022-06-02 | 江西联益光学有限公司 | Optical lens and imaging device |
| CN117111273A (en) * | 2023-10-20 | 2023-11-24 | 江西联益光学有限公司 | optical lens |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116203705B (en) * | 2023-05-04 | 2023-09-12 | 江西联创电子有限公司 | optical lens |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106772951A (en) * | 2017-03-02 | 2017-05-31 | 舜宇光学(中山)有限公司 | A kind of low distortion camera lens of wide-angle |
| CN110632743A (en) * | 2019-11-20 | 2019-12-31 | 江西联创电子有限公司 | Optical imaging lens and imaging apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107942489B (en) * | 2017-10-19 | 2020-02-04 | 瑞声科技(新加坡)有限公司 | Image pickup optical lens |
| CN108254861B (en) * | 2017-12-18 | 2020-02-18 | 瑞声科技(新加坡)有限公司 | Image pickup optical lens |
| TWI687737B (en) * | 2018-05-07 | 2020-03-11 | 佳凌科技股份有限公司 | Wide-angle lens |
| CN110554489B (en) * | 2018-06-04 | 2021-10-08 | 佳凌科技股份有限公司 | Wide-angle lens |
| CN112147764B (en) * | 2020-11-24 | 2021-02-23 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
-
2020
- 2020-11-24 CN CN202011325126.8A patent/CN112147764B/en active Active
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- 2021-11-23 WO PCT/CN2021/132263 patent/WO2022111437A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772951A (en) * | 2017-03-02 | 2017-05-31 | 舜宇光学(中山)有限公司 | A kind of low distortion camera lens of wide-angle |
| CN110632743A (en) * | 2019-11-20 | 2019-12-31 | 江西联创电子有限公司 | Optical imaging lens and imaging apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022111437A1 (en) * | 2020-11-24 | 2022-06-02 | 江西联益光学有限公司 | Optical lens and imaging device |
| CN112799219A (en) * | 2021-03-22 | 2021-05-14 | 江西晶超光学有限公司 | Optical lens group, camera module and electronic equipment |
| CN117111273A (en) * | 2023-10-20 | 2023-11-24 | 江西联益光学有限公司 | optical lens |
| CN117111273B (en) * | 2023-10-20 | 2024-02-20 | 江西联益光学有限公司 | Optical lens |
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| WO2022111437A1 (en) | 2022-06-02 |
| CN112147764B (en) | 2021-02-23 |
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