CN106443976B - Large aperture high definition optical system and its camera lens of application - Google Patents
Large aperture high definition optical system and its camera lens of application Download PDFInfo
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- CN106443976B CN106443976B CN201611209922.9A CN201611209922A CN106443976B CN 106443976 B CN106443976 B CN 106443976B CN 201611209922 A CN201611209922 A CN 201611209922A CN 106443976 B CN106443976 B CN 106443976B
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- object plane
- large aperture
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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
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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Abstract
The embodiment of the invention discloses a kind of large aperture high definition optical systems, are successively arranged from object plane to image planes along optical axis: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens；The object plane side of first lens is convex surface, and image planes side is concave surface；Second lens are biconcave lens；The third lens are biconvex lens；The object plane side of 4th lens is concave surface, and image planes side is convex surface；The object plane side of 5th lens is concave surface, and image planes side is convex surface；6th lens are biconvex lens；Wherein, the 4th lens and the 5th lens are compound lens, and meet TTL/EFL≤5.5.On the other hand, the embodiment of the invention also provides a kind of camera lenses.The embodiment of the present invention is mainly made of six pieces of lens, and lens piece number is few, and structure is simple；It is combined with each other using different lens, and the 4th lens and the 5th lens are balsaming lens, there are the optical properties such as large aperture, high pixel, low distortion and good athermal.
Description
Technical field
The present invention relates to a kind of optical system and its camera lens of application, especially a kind of optical system being made of six pieces of eyeglasses
System and its on-vehicle lens of application.
Background technique
It with automobile assistant driving systematic difference and popularizes, on-vehicle lens have also obtained commonly used.Due to vehicle-mounted mirror
Head requires to adapt to the complicated climatic environment of variation and illumination condition, therefore camera lens needs biggish clear aperature；Meanwhile it is vehicle-mounted
Camera lens is also required to identification path locus and traffic mark, therefore camera lens need to have higher clarity.To meet above-mentioned want
It asks, the existing generally existing eyeglass of on-vehicle lens is excessive, complicated defect.
Summary of the invention
That there are eyeglasses to overcome the problems, such as existing optical system or camera lens is excessive, structure is complicated, one side of the embodiment of the present invention
Face provides a kind of large aperture high definition optical system.
Large aperture high definition optical system is successively arranged from object plane to image planes along optical axis: the first lens, the second lens, third
Lens, the 4th lens, the 5th lens and the 6th lens；
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
Wherein, the 4th lens and the mutually glued formation compound lens of the 5th lens, and meet TTL/EFL≤5.5, wherein
TTL is the first lens object plane side vertex of optical system the distance between to imaging surface, and EFL is the effective focal length of optical system.
On the other hand, the embodiment of the invention also provides a kind of camera lenses.
A kind of camera lens is equipped with large aperture high definition optical system described above in camera lens.
The embodiment of the present invention is mainly made of six pieces of lens, and lens piece number is few, and structure is simple；Using different lens phases
Mutually combination, and the 4th lens and the 5th lens are balsaming lens, have large aperture, high pixel, low distortion and good athermal etc.
Optical property.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of optical system or camera lens of the invention；
Fig. 2 is the distortion curve of optical system or camera lens of the invention at+25 DEG C；
Fig. 3 is the MTF curve figure of optical system or camera lens of the invention at+25 DEG C；
Fig. 4 is the relative illumination figure of optical system or camera lens of the invention at+25 DEG C；
Fig. 5 is the MTF curve figure of optical system or camera lens of the invention at -40 DEG C；
Fig. 6 is the MTF curve figure of optical system or camera lens of the invention at+85 DEG C.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
As shown in Figure 1, large aperture high definition optical system, 9 it is successively arranged from object plane to image planes along optical axis: the first lens 1,
Two lens 2, the third lens 3, the 4th lens 4, the 5th lens 5 and the 6th lens 6.
The object plane side of first lens 1 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens 2 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens 3 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 4th lens 4 is concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens 5 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
Wherein, the 4th lens 4 and the mutually glued formation compound lens of the 5th lens 5, and meet TTL/EFL≤5.5, wherein
TTL is the first lens object plane side vertex of optical system the distance between to imaging surface, and EFL is the effective focal length of optical system.
The embodiment of the present invention is mainly made of six pieces of lens, and lens piece number is few, and structure is simple；Using different lens phases
Mutually combination, and the 4th lens, the 5th lens are balsaming lens, have the light such as large aperture, high pixel, low distortion and good athermal
Learn performance.
Further, each lens of the optical system meet following condition:
(1)-10mm<f1<-2mm；
(2)-10mm<f2<-2mm；
(3)2mm<f3<10mm；
(4)2mm<f4<10mm；
(5)-10mm<f5<-2mm；
(6)5mm<f6<15mm；
(7)12mm<f45<30mm；
Wherein, f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, and f3 is the focal length of the third lens 3, and f4 is
The focal length of 4th lens 4, f5 are the focal length of the 5th lens 5, and f6 is the focal length of the 6th lens 6, and f45 is the 4th lens 4 and the 5th
Focal length after the combination of lens 5.Structure is simple, using different lens be combined with each other, have large aperture, high pixel, it is low distortion and it is good
The optical properties such as good athermal.
Still further, each lens of the optical system meet following condition:
(1)-2.0<f1/f<-1.2；
(2)-2.5<f2/f<-1.5；
(3)1.0<f3/f<2.0；
(4)0.8<f4/f<1.7；
(5)-2.2<f5/f<-1.2；
(6)2.0<f6/f<3.2；
(7)3.0<f45/f<5.0；
Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, f3
For the focal length of the third lens 3, f4 is the focal length of the 4th lens 4, and f5 is the focal length of the 5th lens 5, and f6 is the coke of the 6th lens 6
Away from f45 is the focal length after the 4th lens 4 are combined with the 5th lens 5.It can guarantee good optical property.
Further, the Refractive Index of Material Nd1 of the first lens 1, material Abbe constant Vd meet: 1.74 < Nd1 < 1.90, and 37
<Vd1<55.Structure is simple, it is ensured that good optical property.
Still further, the Refractive Index of Material Nd2 of the second lens 2, material Abbe constant Vd2 meet: 1.47 < Nd2 <
1.62,50 < Vd2 < 80.Structure is simple, it is ensured that good optical property.
Further, the Refractive Index of Material Nd3, material Abbe constant Vd3 of the third lens 3 meet: 1.75 < Nd3 <
1.95,17 < Vd3 < 40.Structure is simple, it is ensured that good optical property.
Further, the Refractive Index of Material Nd4 of the 4th lens 4, material Abbe constant Vd4 meet: 1.55 < Nd4 <
1.68,45 < Vd4 < 70.Structure is simple, it is ensured that good optical property.
Further, the Refractive Index of Material Nd5 of the 5th lens 5, material Abbe constant Vd5 meet: 1.75 < Nd5 <
1.95,17 < Vd5 < 35.Structure is simple, it is ensured that good optical property.
Still further, the Refractive Index of Material Nd6 of the 6th lens 6, material Abbe constant Vd6 meet: 1.75 < Nd6 <
1.95,35 < Vd6 < 55.Structure is simple, it is ensured that good optical property.
Further, the aperture diaphragm 7 of optical system is between the third lens 3 and the 4th lens 4, close to the third lens
Side 3.Structure is simple, for adjusting the intensity of light beam.
Further, optical filter 8 is equipped between the 6th lens 6 and image planes 9, the optical filter 8 is for filtering in environment
Infrared light, to avoid red aeration phenomenon is generated.
Specifically, in the present embodiment, the focal length f of this optical system is 3.65mm, and stop index FNo. is 1.70, visual field
2 ω=90.2 ° of angle, " the high definition Sensor that is suitable for 1/3.Every basic parameter of this optical system is as shown in the table:
In upper table, along optical axis from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3, S4 are corresponded to
Two surfaces of the second lens 2；S5, S6 correspond to two surfaces of the third lens 3；7 institute of STO correspondence system aperture diaphragm is in place
It sets；S8, S9 correspond to two surfaces of the 4th lens 4；S9, S10 correspond to two surfaces of the 5th lens 5；S11, S12 are corresponding
For two surfaces of the 6th lens 6；S13, S14 correspond to two surfaces of optical filter 8；S15 corresponds to image planes 9.
As can be seen that the optical system in the present embodiment has extraordinary athermal performance in from Fig. 2 to Fig. 6.
A kind of camera lens is equipped with large aperture high definition optical system described above in camera lens.
Above-mentioned large aperture high definition optical system and its camera lens of application use different lens combinations and reasonable distribution light focus
Degree realizes the optical properties such as large aperture, high pixel, low distortion and good athermal.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert specific reality of the invention
It applies and is only limited to these instructions.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
Several technology deduction or replace are made, all should be considered as protection scope of the present invention.
Claims (9)
1. large aperture high definition optical system is successively arranged from object plane to image planes along optical axis: the first lens, the second lens, third are saturating
Mirror, the 4th lens, the 5th lens and the 6th lens；It is characterized in that,
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
Wherein, the 4th lens and the mutually glued formation compound lens of the 5th lens, and meet TTL/EFL≤5.5, wherein TTL is
The distance between to imaging surface, EFL is the effective focal length of optical system on first lens object plane side vertex of optical system；
Each lens of the optical system meet following condition:
(1)-10mm<f1<-2mm；
(2)-10mm<f2<-2mm；
(3)2mm<f3<10mm；
(4)2mm<f4<10mm；
(5)-10mm<f5<-2mm；
(6)5mm<f6<15mm；
(7)12mm<f45<30mm；
Wherein, f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is the focal length of the third lens, and f4 is the 4th saturating
The focal length of mirror, f5 are the focal length of the 5th lens, and f6 is the focal length of the 6th lens, after f45 is the 4th lens and the 5th lens combination
Focal length.
2. high definition optical system in large aperture according to claim 1, which is characterized in that each lens of the optical system meet
Following condition:
(1)-2.0<f1/f<-1.2；
(2)-2.5<f2/f<-1.5；
(3)1.0<f3/f<2.0；
(4)0.8<f4/f<1.7；
(5)-2.2<f5/f<-1.2；
(6)2.0<f6/f<3.2；
(7)3.0<f45/f<5.0；
Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is third
The focal length of lens, f4 are the focal length of the 4th lens, and f5 is the focal length of the 5th lens, and f6 is the focal length of the 6th lens, and f45 is the 4th
Focal length after lens and the 5th lens combination.
3. high definition optical system in large aperture according to claim 1 or 2, which is characterized in that the material of the first lens reflects
Rate Nd1, material Abbe constant Vd1 meet: 1.74 < Nd1 < 1.90,37 < Vd1 < 55.
4. high definition optical system in large aperture according to claim 1 or 2, which is characterized in that the material of the second lens reflects
Rate Nd2, material Abbe constant Vd2 meet: 1.47 < Nd2 < 1.62,50 < Vd2 < 80.
5. high definition optical system in large aperture according to claim 1 or 2, which is characterized in that the material of the third lens reflects
Rate Nd3, material Abbe constant Vd3 meet: 1.75 < Nd3 < 1.95,17 < Vd3 < 40.
6. high definition optical system in large aperture according to claim 1 or 2, which is characterized in that the material of the 4th lens reflects
Rate Nd4, material Abbe constant Vd4 meet: 1.55 < Nd4 < 1.68,45 < Vd4 < 70.
7. high definition optical system in large aperture according to claim 1 or 2, which is characterized in that the material of the 5th lens reflects
Rate Nd5, material Abbe constant Vd5 meet: 1.75 < Nd5 < 1.95,17 < Vd5 < 35.
8. high definition optical system in large aperture according to claim 1 or 2, which is characterized in that the material of the 6th lens reflects
Rate Nd6, material Abbe constant Vd6 meet: 1.75 < Nd6 < 1.95,35 < Vd6 < 55.
9. a kind of camera lens, which is characterized in that be equipped with the described in any item large aperture high definition optical systems of claim 1-8 in camera lens
System.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106990507B (en) * | 2017-05-24 | 2022-05-31 | 广东弘景光电科技股份有限公司 | High-definition wide-angle optical system and camera module applying same |
| CN107505691B (en) * | 2017-09-28 | 2023-04-28 | 广东弘景光电科技股份有限公司 | Large aperture high pixel optical system |
| TWI647478B (en) * | 2018-01-15 | 2019-01-11 | 玉晶光電股份有限公司 | Optical imaging lens |
| CN109375341B (en) * | 2018-09-20 | 2023-10-10 | 苏州莱能士光电科技股份有限公司 | Vehicle-mounted reversing image optical imaging system |
| CN109116516A (en) * | 2018-09-28 | 2019-01-01 | 广东弘景光电科技股份有限公司 | Large aperture optical system and its camera module of application |
| CN110109233A (en) * | 2019-05-28 | 2019-08-09 | 广东弘景光电科技股份有限公司 | Large aperture optical system and its camera module of application |
| CN110320646A (en) * | 2019-07-25 | 2019-10-11 | 广东弘景光电科技股份有限公司 | Large aperture wide-angle optics and its camera module of application |
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| US5999337A (en) * | 1997-10-21 | 1999-12-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Lens system for electronic photography |
| CN201293863Y (en) * | 2007-10-05 | 2009-08-19 | 富士能株式会社 | Photographic lens and photographic device |
| CN104865681A (en) * | 2014-02-25 | 2015-08-26 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN206331173U (en) * | 2016-12-24 | 2017-07-14 | 广东弘景光电科技股份有限公司 | Large aperture high definition optical system and its camera lens of application |
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| JP2992547B2 (en) * | 1990-07-09 | 1999-12-20 | チノン株式会社 | Super wide angle lens |
| JP4416391B2 (en) * | 2002-11-22 | 2010-02-17 | 株式会社リコー | Wide-angle lens, camera and projection display device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5999337A (en) * | 1997-10-21 | 1999-12-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Lens system for electronic photography |
| CN201293863Y (en) * | 2007-10-05 | 2009-08-19 | 富士能株式会社 | Photographic lens and photographic device |
| CN104865681A (en) * | 2014-02-25 | 2015-08-26 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN206331173U (en) * | 2016-12-24 | 2017-07-14 | 广东弘景光电科技股份有限公司 | Large aperture high definition optical system and its camera lens of application |
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