CN114967041B - Imaging lens - Google Patents
Imaging lens Download PDFInfo
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- CN114967041B CN114967041B CN202110218069.1A CN202110218069A CN114967041B CN 114967041 B CN114967041 B CN 114967041B CN 202110218069 A CN202110218069 A CN 202110218069A CN 114967041 B CN114967041 B CN 114967041B
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- lens
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- surface facing
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- 238000003384 imaging method Methods 0.000 title claims abstract description 93
- 230000003287 optical effect Effects 0.000 claims abstract description 43
- 230000005499 meniscus Effects 0.000 claims abstract description 27
- 230000004075 alteration Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 9
- 239000011521 glass Substances 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000006059 cover glass Substances 0.000 description 3
- 101100233050 Caenorhabditis elegans ima-1 gene Proteins 0.000 description 1
- 101100233056 Caenorhabditis elegans ima-2 gene Proteins 0.000 description 1
- 101100233059 Caenorhabditis elegans ima-3 gene Proteins 0.000 description 1
- 101100233058 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) IMA2 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Abstract
An imaging lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens is a meniscus lens having a negative refractive power. The second lens is a meniscus lens with positive refractive power and comprises a concave surface facing the object side and a convex surface facing the image side. The third lens is a meniscus lens having positive refractive power. The fourth lens has positive refractive power and comprises a convex surface facing the object side. The fifth lens has refractive power. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from an object side to an image side along an optical axis.
Description
Technical Field
The invention relates to an imaging lens.
Background
In addition to the development of miniaturization and high resolution, the present imaging lens has to have an ability to resist environmental temperature changes according to different application requirements, and the known imaging lens cannot meet the present requirements, and another imaging lens with a new architecture is required to meet the requirements of miniaturization, high resolution and environmental temperature changes at the same time.
Disclosure of Invention
The invention aims to solve the technical problems that the imaging lens in the prior art cannot meet the requirements of miniaturization, high resolution and environmental temperature change resistance at the same time, and provides an imaging lens which has the advantages of short total length, small aperture value, high resolution and environmental temperature change resistance, but still has good optical performance.
The invention provides an imaging lens which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens is a meniscus lens having a negative refractive power. The second lens is a meniscus lens with positive refractive power and comprises a concave surface facing the object side and a convex surface facing the image side. The third lens is a meniscus lens having positive refractive power. The fourth lens has positive refractive power and comprises a convex surface facing the object side. The fifth lens has refractive power. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from an object side to an image side along an optical axis.
The first lens element comprises a convex surface facing the object side and a concave surface facing the image side, and the third lens element comprises a concave surface facing the object side and a convex surface facing the image side.
The fourth lens element may further comprise a concave surface facing the image side, and the fifth lens element may further comprise a convex surface facing the object side.
The fourth lens element may further include another convex surface facing the image side, and the fifth lens element may further include a concave surface facing the object side.
Wherein the second lens comprises an aspherical surface and the fifth lens comprises an aspherical surface.
The imaging lens of the invention can further comprise an aperture, and the aperture is arranged between the second lens and the third lens.
Wherein the imaging lens satisfies the following conditions: 0.1< ψST/TTL <0.5; wherein ψST is the aperture of the diaphragm, and TTL is the distance between the object side surface of the first lens element and the imaging surface on the optical axis.
The invention provides another imaging lens which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens is a meniscus lens having a negative refractive power. The second lens is a meniscus lens having positive refractive power. The third lens is a meniscus lens having positive refractive power. The fourth lens has positive refractive power. The fifth lens has a single refractive power. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from an object side to an image side along an optical axis.
Wherein the imaging lens satisfies the following conditions: -3<f 1 /f<-1.5; wherein f 1 F is the effective focal length of the first lens, and f is the effective focal length of the imaging lens.
Wherein the imaging lens satisfies the following conditions: 0.5<ET 5 /T 5 <1.5; wherein ET is 5 For the edge thickness of the fifth lens, T 5 Is the thickness of the fifth lens on the optical axis.
Wherein the imaging lens satisfies the following conditions: 0.3< ψ2/ψ3<0.8; wherein, ψ2 is the maximum optical effective diameter of the second lens, and ψ3 is the maximum optical effective diameter of the third lens.
The imaging lens provided by the invention has the following beneficial effects: the lens has short total length, small aperture value, high resolution and environmental temperature change resistance, but still has good optical performance.
Drawings
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Fig. 1 is a schematic view of a lens arrangement of a first embodiment of an imaging lens according to the present invention.
Fig. 2A is a longitudinal aberration (Longitudinal Aberration) diagram of the first embodiment of the imaging lens according to the present invention.
FIG. 2B is a Field Curvature (Field) diagram of a first embodiment of an imaging lens according to the present invention.
Fig. 2C is a Distortion (displacement) diagram of the first embodiment of the imaging lens according to the present invention.
Fig. 3 is a lens arrangement diagram of a second embodiment of an imaging lens according to the present invention.
Fig. 4A is a longitudinal aberration diagram of a second embodiment of an imaging lens according to the present invention.
Fig. 4B is a field curvature diagram of a second embodiment of an imaging lens according to the present invention.
Fig. 4C is a distortion chart of a second embodiment of an imaging lens according to the present invention.
Fig. 5 is a lens arrangement diagram of a third embodiment of an imaging lens according to the present invention.
Fig. 6A is a longitudinal aberration diagram of a third embodiment of an imaging lens according to the present invention.
Fig. 6B is a field curvature diagram of a third embodiment of an imaging lens according to the present invention.
Fig. 6C is a distortion chart of a third embodiment of an imaging lens according to the present invention.
Detailed Description
The present invention provides an imaging lens including: a first lens, a second lens, a third lens, a fourth lens and a fifth lens; wherein the first lens is a meniscus lens having a negative refractive power; the second lens is a meniscus lens with positive refractive power and comprises a concave surface facing the object side and a convex surface facing the image side; wherein the third lens is a meniscus lens with positive refractive power; the fourth lens has positive refractive power and comprises a convex surface facing the object side; wherein the fifth lens has a positive refractive power; the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from an object side to an image side along an optical axis.
The present invention provides another imaging lens including: a first lens, a second lens, a third lens, a fourth lens and a fifth lens; wherein the first lens is a meniscus lens having a negative refractive power; wherein the second lens is a meniscus lens with positive refractive power; wherein the third lens is a meniscus lens with positive refractive power; wherein the fourth lens has a positive refractive power; the fifth lens is provided with a single lens with refractive power, and an air interval is arranged between the fifth lens and the fourth lens; the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from an object side to an image side along an optical axis.
Please refer to the following table one, table two, table four, table five, table seven and table eight, wherein the table one, table four and table seven are related parameter tables of each lens of the first embodiment to the third embodiment of the imaging lens according to the present invention, and the table two, table five and table eight are related parameter tables of the aspherical surface of the aspherical lens in the table one, table four and table seven, respectively.
Fig. 1, 3 and 5 are schematic lens arrangements of a first embodiment, a second embodiment and a third embodiment of the imaging lens assembly of the present invention, wherein the first lenses L11, L21 and L31 are meniscus lenses with negative refractive power, the object-side surfaces S11, S21 and S31 are convex surfaces, the image-side surfaces S12, S22 and S32 are concave surfaces, and the object-side surfaces S11, S21 and S31 and the image-side surfaces S12, S22 and S32 are spherical surfaces.
The second lenses L12, L22, L32 are meniscus lenses with positive refractive power, and are made of glass material, the object side surfaces S13, S23, S33 are concave surfaces, the image side surfaces S14, S24, S34 are convex surfaces, and the object side surfaces S13, S23, S33 and the image side surfaces S14, S24, S34 are aspheric surfaces.
The third lenses L13, L23, L33 are meniscus lenses with positive refractive power, and are made of glass material, the object side surfaces S16, S26, S36 are concave surfaces, the image side surfaces S17, S27, S37 are convex surfaces, and the object side surfaces S16, S26, S36 and the image side surfaces S17, S27, S37 are spherical surfaces.
The fourth lenses L14, L24, L34 have positive refractive power, and are made of glass material, and the object-side surfaces S18, S28, S38 are convex, and the object-side surfaces S18, S28, S38 and the image-side surfaces S19, S29, S39 are spherical surfaces.
The fifth lenses L15, L25, L35 have positive refractive power, and are made of glass material, and the image sides S111, S211, S311 are convex, and the object sides S110, S210, S310 and the image sides S111, S211, S311 are aspheric surfaces.
In addition, the imaging lenses 1, 2, 3 satisfy at least one of the following conditions:
-3<f 1 /f<-1.5； (1)
0.5<ET 5 /T 5 <1.5； (2)
0.3<ψ2/ψ3<0.8； (3)
0.1<ψST/TTL<0.5； (4)
wherein f1 is the effective focal length of the first lens element L11, L21, L31 in the first to third embodiments, f is the effective focal length of the imaging lens element 1, 2, L3 in the first to third embodiments, ET5 is the edge thickness of the fifth lens element L15, L25, L35 in the first to third embodiments, T5 is the thickness of the fifth lens element L15, L25, L35 on the optical axes OA1, OA2, OA3 in the first to third embodiments, ψ2 is the maximum optical effective diameter of the second lens element L12, L22, L32 in the first to third embodiments, ψ3 is the maximum optical effective diameter of the third lens element L13, L23, L33 in the first to third embodiments, the aperture of the diaphragm ST1, ST2, ST3 in the first to third embodiments, and the optical axis distance of the lens element L21, OA 31, OA2, OA3 on the imaging side face of the first to OA1, OA2, OA3 in the first to third embodiments, OA 31, and IMA2 respectively. The imaging lenses 1, 2 and 3 can effectively shorten the total length of the lenses, effectively improve the resolution, effectively resist the change of the ambient temperature and effectively correct the aberration.
When the condition (1) is satisfied: -3<f 1 /f<At-1.5, the field of view can be effectively increased.
When the condition (2) is satisfied: 0.5<ET 5 /T 5 <1.5, the workability can be effectively enhanced.
When the condition (3) is satisfied: when 0.3< psi 2/psi 3<0.8, the imaging range can be effectively increased.
When the condition (4) is satisfied: when 0.1< psi ST/TTL <0.5, the aperture value can be effectively narrowed.
The design of the all-glass lens can effectively resist the change of the ambient temperature, so that the imaging lens still has good optical performance in a high-temperature or low-temperature environment, is less prone to degradation after long-time use and still has good optical performance.
A first embodiment of the imaging lens of the present invention will now be described in detail. Referring to fig. 1, the imaging lens 1 includes, in order from an object side to an image side along an optical axis OA1, a first lens L11, a second lens L12, an aperture stop ST1, a third lens L13, a fourth lens L14, a fifth lens L15, an optical filter OF1 and a cover glass CG1. In imaging, light from the object side is finally imaged on the imaging plane IMA 1. According to the first to eighth paragraphs [ detailed description ], wherein:
the fourth lens element L14 has a meniscus lens element with a concave image-side surface S19; the fifth lens element L15 with a convex object-side surface S110;
the object side surface S112 and the image side surface S113 OF the optical filter OF1 are plane surfaces;
the object side surface S114 and the image side surface S115 of the protective glass CG1 are both plane surfaces;
by utilizing the lens, the aperture ST1 and the design at least meeting one of the conditions (1) to (4), the imaging lens 1 can effectively shorten the total length of the lens, effectively improve the resolution, effectively resist the change of the ambient temperature and effectively correct the aberration.
Table one is a table of relevant parameters for each lens of the imaging lens 1 in fig. 1.
List one
The aspherical surface dishing degree z of the aspherical lens in table one is obtained by the following formula:
z＝ch 2 /{1+[1-(k+1)c 2 h 2 ] 1/2 }+Ah 4 +Bh 6 +Ch 8
wherein:
c: curvature;
h: a vertical distance from any point of the lens surface to the optical axis;
k: a conic coefficient;
A-C: aspheric coefficients.
Table two is a table of related parameters of the aspherical surface of the aspherical lens in table one, where k is a Conic Constant and a to C are aspherical coefficients.
Watch II
The third table is the related parameter values of the imaging lens 1 of the first embodiment and the calculated values corresponding to the conditions (1) to (4), and it can be seen from the third table that the imaging lens 1 of the first embodiment can meet the requirements of the conditions (1) to (4).
Watch III
| ET 5 | 0.589mm | T 5 | 1.060mm | ψ2 | 3.749mm |
| ψ3 | 7.017mm | ψST | 3.742mm | ||
| f 1 /f | -2.099 | ET 5 /T 5 | 0.556 | ψ2/ψ3 | 0.534 |
| ψST/TTL | 0.243 |
In addition, the optical performance of the imaging lens 1 of the first embodiment can also meet the requirement, and as can be seen from fig. 2A, the imaging lens 1 of the first embodiment has a longitudinal aberration between-0.001 mm and 0.015 mm. As can be seen from fig. 2B, the imaging lens 1 of the first embodiment has a curvature of field between-0.04 mm and 0.05 mm. As can be seen from fig. 2C, the imaging lens 1 of the first embodiment has a distortion between-70% and 0%.
It is apparent that the longitudinal aberration, curvature of field, distortion of the imaging lens 1 of the first embodiment can be effectively corrected, resulting in a better optical performance.
Referring to fig. 3, the imaging lens 2 includes, in order from an object side to an image side along an optical axis OA2, a first lens L21, a second lens L22, an aperture stop ST2, a third lens L23, a fourth lens L24, a fifth lens L25, an optical filter OF2 and a cover glass CG2. In imaging, light from the object side is finally imaged on the imaging plane IMA 2. According to the first to eighth paragraphs [ detailed description ], wherein:
the fourth lens L24 is a meniscus lens, and an image-side surface S29 thereof is a concave surface; the fifth lens L25 is a biconvex lens, and an object side surface S210 thereof is a convex surface;
the object side surface S212 and the image side surface S213 OF the optical filter OF2 are both plane surfaces;
the object side surface S214 and the image side surface S215 of the protecting glass CG2 are both plane surfaces;
by utilizing the lens, the aperture ST2 and the design at least meeting one of the conditions (1) to (4), the imaging lens 2 can effectively shorten the total length of the lens, effectively improve the resolution, effectively resist the change of the ambient temperature and effectively correct the aberration.
Table four is a table of relevant parameters for each lens of the imaging lens 2 in fig. 3.
Table four
The definition of the aspherical surface dishing z of the aspherical lens in table four is the same as that of the aspherical lens in the first embodiment, and is not described here.
Table five is a table of related parameters of the aspherical surface of the aspherical lens in table four, where k is a Conic Constant and a to C are aspherical coefficients.
TABLE five
The sixth table is the related parameter values of the imaging lens 2 of the second embodiment and the calculated values corresponding to the conditions (1) to (4), and it can be seen from the sixth table that the imaging lens 2 of the second embodiment can meet the requirements of the conditions (1) to (4).
TABLE six
| ET 5 | 1.529mm | T 5 | 2.106mm | ψ2 | 3.742mm |
| ψ3 | 6.998mm | ψST | 3.742mm | ||
| f 1 /f | -1.887 | ET 5 /T 5 | 0.726 | ψ2/ψ3 | 0.535 |
| ψST/TTL | 0.246 |
In addition, the optical performance of the imaging lens 2 of the second embodiment can also meet the requirement, and as can be seen from fig. 4A, the imaging lens 2 of the second embodiment has a longitudinal aberration between-0.01 mm and 0.04 mm. As can be seen from fig. 4B, the imaging lens 2 of the second embodiment has a curvature of field between-0.04 mm and 0.05 mm. As can be seen from fig. 4C, the imaging lens 2 of the second embodiment has a distortion between-70% and 0%.
It is apparent that the longitudinal aberration, curvature of field, and distortion of the imaging lens 2 of the second embodiment can be effectively corrected, resulting in better optical performance.
Referring to fig. 5, the imaging lens 3 includes, in order from an object side to an image side along an optical axis OA3, a first lens L31, a second lens L32, an aperture stop ST3, a third lens L33, a fourth lens L34, a fifth lens L35, an optical filter OF3 and a cover glass CG3. In imaging, light from the object side is finally imaged on the imaging plane IMA 3. According to the first to eighth paragraphs [ detailed description ], wherein:
the fourth lens L34 is a biconvex lens, and an image-side surface S39 thereof is a convex surface; the fifth lens element L35 with a concave object-side surface S310;
the optical filter OF3 has a plane on both the object side surface S312 and the image side surface S313;
the object side surface S314 and the image side surface S315 of the protecting glass CG3 are plane surfaces;
by utilizing the lens, the aperture ST3 and the design at least meeting one of the conditions (1) to (4), the imaging lens 3 can effectively shorten the total length of the lens, effectively improve the resolution, effectively resist the change of the ambient temperature and effectively correct the aberration.
Table seven is a table of relevant parameters for each lens of the imaging lens 3 in fig. 5.
Watch seven
The definition of the aspherical surface dishing z of the aspherical lens in table seven is the same as that of the aspherical lens in the first embodiment, and is not described here.
Table eight is a table of parameters related to the aspherical surface of the aspherical lens in table seven, where k is a Conic Constant and a to C are aspherical coefficients.
Table eight
The table nine is the relevant parameter values of the imaging lens 3 of the third embodiment and the calculated values corresponding to the conditions (1) to (4), and it is known from the table nine that the imaging lens 3 of the third embodiment can meet the requirements of the conditions (1) to (4).
Table nine
| ET 5 | 1.268mm | T 5 | 1.089mm | ψ2 | 3.755mm |
| ψ3 | 6.721mm | ψST | 3.759mm | ||
| f 1 /f | -1.749 | ET 5 /T 5 | 1.164 | ψ2/ψ3 | 0.559 |
| ψST/TTL | 0.249 |
In addition, the optical performance of the imaging lens 3 of the third embodiment can also meet the requirement, and as can be seen from fig. 6A, the imaging lens 3 of the third embodiment has a longitudinal aberration of between-0.001 mm and 0.045 mm. As can be seen from fig. 6B, the imaging lens 3 of the third embodiment has a curvature of field between-0.03 mm and 0.07 mm. As can be seen from fig. 6C, the imaging lens 3 of the third embodiment has a distortion between-70% and 0%.
It is apparent that the longitudinal aberration, curvature of field, and distortion of the imaging lens 3 of the third embodiment can be effectively corrected, resulting in a preferable optical performance.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and the scope of the invention is defined by the appended claims.
Claims (6)
1. The imaging lens is characterized in that five lenses with refractive power are arranged in sequence:
a first lens, a second lens, a third lens, a fourth lens, and a fifth lens;
wherein the first lens is a meniscus lens with negative refractive power;
the second lens is a meniscus lens with positive refractive power and comprises a concave surface facing the object side and a convex surface facing the image side;
wherein the third lens is a meniscus lens with positive refractive power;
the fourth lens has positive refractive power and comprises a convex surface facing the object side;
wherein the fifth lens has a positive refractive power;
the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element are arranged in order from the object side to the image side along an optical axis;
the fourth lens is a meniscus lens and further comprises a concave surface facing the image side; and
the fifth lens is a biconvex lens and further comprises another convex surface facing the object side;
the imaging lens further comprises an aperture, and the imaging lens at least meets one of the following conditions:
-3<f 1 /f<-1.5；
0.5<ET 5 /T 5 <1.5；
0.3<ψ2/ψ3<0.8；
0.1<ψST/TTL<0.5；
wherein f1 is an effective focal length of the first lens element, f is an effective focal length of the imaging lens, ET5 is an edge thickness of the fifth lens element, T5 is a thickness of the fifth lens element on the optical axis, ψ2 is a maximum optical effective diameter of the second lens element, ψ3 is a maximum optical effective diameter of the third lens element, ψst is an aperture of an aperture stop, and TTL is a distance between an object side surface of the first lens element and an imaging surface on the optical axis.
2. The imaging lens as claimed in claim 1, wherein:
the first lens comprises a convex surface facing the object side and a concave surface facing the image side; and
the third lens comprises a concave surface facing the object side and a convex surface facing the image side.
3. The imaging lens as claimed in claim 1, wherein:
the second lens includes an aspherical surface; and
the fifth lens includes an aspherical surface.
4. The imaging lens as claimed in claim 1, wherein the aperture is disposed between the second lens and the third lens.
5. The imaging lens is characterized in that five lenses with refractive power are arranged in sequence:
a first lens, a second lens, a third lens, a fourth lens, and a fifth lens;
wherein the first lens is a meniscus lens with negative refractive power;
wherein the second lens is a meniscus lens with positive refractive power;
wherein the third lens is a meniscus lens with positive refractive power;
wherein the fourth lens has a positive refractive power;
wherein the fifth lens has a single refractive power;
the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from an object side to an image side along an optical axis;
the imaging lens further comprises an aperture, and the imaging lens meets the following conditions:
0.5<ET 5 /T 5 <1.5；
0.3<ψ2/ψ3<0.8；
0.1<ψST/TTL<0.5；
wherein ET is 5 For the edge thickness of the fifth lens, T 5 The thickness of the fifth lens on the optical axis is the thickness; and ψ2 is the maximum optical effective diameter of the second lens element, ψ3 is the maximum optical effective diameter of the third lens element, ψst is the aperture of the diaphragm, and TTL is the distance between the object side surface and the imaging surface of the first lens element on the optical axis.
6. The imaging lens of claim 5, wherein the imaging lens satisfies the following condition:
-3<f 1 /f<-1.5；
wherein f 1 F is the effective focal length of the imaging lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110218069.1A CN114967041B (en) | 2021-02-26 | 2021-02-26 | Imaging lens |
| US17/665,659 US20220276469A1 (en) | 2021-02-26 | 2022-02-07 | Lens Assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110218069.1A CN114967041B (en) | 2021-02-26 | 2021-02-26 | Imaging lens |
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| CN114967041B true CN114967041B (en) | 2024-01-19 |
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|---|---|---|---|---|
| CN101051110A (en) * | 2006-04-05 | 2007-10-10 | 富士能株式会社 | Imaging lens and imaging apparatus |
| CN101373260A (en) * | 2007-08-21 | 2009-02-25 | 富士能株式会社 | Imaging lens and image pickup apparatus |
| CN104749750A (en) * | 2013-12-31 | 2015-07-01 | Kolen株式会社 | Optical lens system |
| CN106547074A (en) * | 2017-01-20 | 2017-03-29 | 宁波舜宇红外技术有限公司 | A kind of infrared fish eye lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4265909B2 (en) * | 2002-12-25 | 2009-05-20 | フジノン株式会社 | Endoscope objective lens |
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2021
- 2021-02-26 CN CN202110218069.1A patent/CN114967041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051110A (en) * | 2006-04-05 | 2007-10-10 | 富士能株式会社 | Imaging lens and imaging apparatus |
| JP2007279282A (en) * | 2006-04-05 | 2007-10-25 | Fujinon Corp | Imaging lens and imaging apparatus |
| CN101373260A (en) * | 2007-08-21 | 2009-02-25 | 富士能株式会社 | Imaging lens and image pickup apparatus |
| CN104749750A (en) * | 2013-12-31 | 2015-07-01 | Kolen株式会社 | Optical lens system |
| CN106547074A (en) * | 2017-01-20 | 2017-03-29 | 宁波舜宇红外技术有限公司 | A kind of infrared fish eye lens |
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| CN114967041A (en) | 2022-08-30 |
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