CN106443976A - Large aperture high definition optical system and lens for use thereof - Google Patents
Large aperture high definition optical system and lens for use thereof Download PDFInfo
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- CN106443976A CN106443976A CN201611209922.9A CN201611209922A CN106443976A CN 106443976 A CN106443976 A CN 106443976A CN 201611209922 A CN201611209922 A CN 201611209922A CN 106443976 A CN106443976 A CN 106443976A
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- lens
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- focal length
- large aperture
- high definition
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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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- Optics & Photonics (AREA)
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Abstract
The invention discloses a large aperture high definition optical system. From the surface to the image plane along the optical axis, the system is successively provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; the surface side of the first lens is convex, and the image surface is concave; the second lens is a biconcave lens; the third lens is a lenticular lens; the surface of the fourth lens is concave, and the image surface is convex; the surface of the fifth lens is concave, and the image surface is convex; the sixth lens is a lenticular lens; wherein the fourth lens and the fifth lens are combined lenses and satisfy TTL / EFL <= 5.5. In another aspect, the present invention also provides a lens. The large aperture high definition optical system is mainly composed of six lenses. The number of lenses is small, and the structure is simple; different lenses are combined with each other, and the fourth lens and the fifth lens are cemented lenses with large aperture, high pixel, low distortion and good heat dissipation and other optical properties.
Description
Technical field：
The present invention relates to the camera lens of a kind of optical system and its application, especially a kind of optical system being made up of six pieces of eyeglasses
System and its on-vehicle lens of application.
Background technology：
With automobile assistant driving systematic difference and popularization, on-vehicle lens have also obtained commonly used.Due to vehicle-mounted mirror
Head requires to adapt to change complicated climatic environment and illumination condition, and therefore camera lens needs larger clear aperature；Meanwhile, vehicle-mounted
Camera lens also requires that and is capable of identify that path locus and traffic mark, therefore camera lens need to possess higher definition.For meeting above-mentioned wanting
Ask, existing on-vehicle lens generally existing eyeglass is excessive, baroque defect.
Content of the invention：
For overcoming existing optical system or camera lens has that eyeglass is excessive, baroque problem, the embodiment of the present invention one side
Face provides a kind of large aperture high definition optical system.
Large aperture high definition optical system, is sequentially provided with from object plane to image planes along optical axis：First lens, the second lens, the 3rd
Lens, the 4th lens, the 5th lens and the 6th lens；
The object plane side of the first lens is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of the second lens is concave surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of the 3rd lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of the 4th lens is concave surface, and image planes side is convex surface, and its focal power is just；
The object plane side of the 5th lens is concave surface, and image planes side is convex surface, and its focal power is negative；
The object plane side of the 6th lens is convex surface, and image planes side is convex surface, and its focal power is just；
Wherein, the 4th lens and the mutually glued formation compound lens of the 5th lens, and meet TTL/EFL≤5.5, wherein
TTL be the first lens object plane side summit of optical system the distance between to imaging surface, EFL is the effective focal length of optical system.
On the other hand, the embodiment of the present invention additionally provides a kind of camera lens.
A kind of camera lens, is provided with large aperture high definition optical system described above in camera lens.
The embodiment of the present invention, it is mainly made up of six pieces of lens, and lens piece number is few, and structure is simple；Using different lens phases
Mutually combine, and the 4th lens and the 5th lens are balsaming lenss, have large aperture, high pixel, low distortion and good athermal etc.
Optical property.
Brief description：
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below
Accompanying drawing be briefly described it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the optical system of the present invention or the structural representation of camera lens；
Fig. 2 is the distortion curve figure at+25 DEG C of optical system or camera lens of the present invention；
Fig. 3 is the MTF curve figure at+25 DEG C of optical system or camera lens of the present invention；
Fig. 4 is the relative illumination figure at+25 DEG C of optical system or camera lens of the present invention；
Fig. 5 is the MTF curve figure at -40 DEG C of optical system or camera lens of the present invention；
Fig. 6 is the MTF curve figure at+85 DEG C of optical system or camera lens of the present invention.
Specific embodiment：
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Drawings and Examples, 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 sequentially provided with from object plane to image planes along optical axis：First lens 1,
Two lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5 and the 6th lens 6.
The object plane side of the first lens 1 is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of the second lens 2 is concave surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of the 3rd lens 3 is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of the 4th lens 4 is concave surface, and image planes side is convex surface, and its focal power is just；
The object plane side of the 5th lens 5 is concave surface, and image planes side is convex surface, and its focal power is negative；
The object plane side of the 6th lens 6 is convex surface, and image planes side is convex surface, and its focal power is just；
Wherein, the 4th lens 4 and the mutual glued formation compound lens of the 5th lens 5, and meet TTL/EFL≤5.5, wherein
TTL be the first lens object plane side summit of optical system the distance between to imaging surface, EFL is the effective focal length of optical system.
The embodiment of the present invention, it is mainly made up of six pieces of lens, and lens piece number is few, and structure is simple；Using different lens phases
Mutually combine, and the 4th lens, the 5th lens are balsaming lenss, have the light such as large aperture, high pixel, low distortion and good athermal
Learn performance.
Further, each lens of this optical system meet following condition：
(1)-10<f1<-2；
(2)-10<f2<-2；
(3)2<f3<10；
(4)2<f4<10；
(5)-10<f5<-2；
(6)5<f6<15；
(7)12<f45<30；
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 3rd lens 3, and f4 is
The focal length of the 4th lens 4, f5 is 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 lens 5 combination.Structure is simple, is mutually combined using different lens, has large aperture, high pixel, low distortion and good
The optical properties such as good athermal.
Yet further, each lens of this 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 whole 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 3rd 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 Jiao of the 6th lens 6
Away from f45 is the focal length after the 4th lens 4 are combined with the 5th lens 5.Good optical property can be ensured.
Further, the Refractive Index of Material Nd1 of the first lens 1, material Abbe constant Vd1 meet：1.74<Nd1<1.90,
37<Vd1<55.Structure simple it is ensured that good optical property.
Yet 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 simple it is ensured that good optical property.
Further, the Refractive Index of Material Nd3 of the 3rd lens 3, material Abbe constant Vd3 meet：1.75<Nd3<
1.95,17<Vd3<40.Structure 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 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 simple it is ensured that good optical property.
Yet 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 simple it is ensured that good optical property.
Further, the aperture diaphragm 7 of optical system is located between the 3rd lens 3 and the 4th lens 4, near the 3rd lens
Side 3.Structure is simple, for adjusting the intensity of light beam.
Further, it is provided with optical filter 8 between the 6th lens 6 and image planes 9, this optical filter 8 is used for filtering in environment
Infrared light, to avoid producing red aeration phenomenon.
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
Angle 2 ω=90.2 °, are suitable for 1/3 " high definition Sensor.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 correspond to
Two surfaces of the second lens 2；S5, S6 correspond to two surfaces of the 3rd lens 3；STO correspondence system aperture diaphragm 7 institute is in place
Put；S8, S9 correspond to two surfaces of the 4th lens 4；S9, S10 correspond to two surfaces of the 5th lens 5；S11, S12 correspond to
Two surfaces for 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 from Fig. 2 to Fig. 6.
A kind of camera lens, is provided with large aperture high definition optical system described above in camera lens.
The camera lens of above-mentioned large aperture high definition optical system and its application is burnt using different lens combinations and reasonable distribution light
Degree achieves the optical properties such as large aperture, high pixel, low distortion and good athermal.
One or more embodiment providing with reference to particular content is provided, does not assert the concrete reality of the present invention
Apply and be confined to these explanations.All approximate with the method for the present invention, structure etc., identical, or for present inventive concept under the premise of
Make some technology deduction or replace, all should be considered as protection scope of the present invention.
Claims (10)
1. large aperture high definition optical system, is sequentially provided with from object plane to image planes along optical axis：First lens, the second lens, the 3rd saturating
Mirror, the 4th lens, the 5th lens and the 6th lens；It is characterized in that,
The object plane side of the first lens is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of the second lens is concave surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of the 3rd lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of the 4th lens is concave surface, and image planes side is convex surface, and its focal power is just；
The object plane side of the 5th lens is concave surface, and image planes side is convex surface, and its focal power is negative；
The object plane side of the 6th lens is convex surface, and image planes side is convex surface, and its focal power is just；
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 summit of optical system.
2. large aperture according to claim 1 high definition optical system is it is characterised in that each lens of this optical system meet
Following condition：
(1)-10<f1<-2；
(2)-10<f2<-2；
(3)2<f3<10；
(4)2<f4<10；
(5)-10<f5<-2；
(6)5<f6<15；
(7)12<f45<30；
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 3rd lens, and f4 is saturating for the 4th
The focal length of mirror, f5 is 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.
3. large aperture according to claim 1 high definition optical system is it is characterised in that each lens of this 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 whole 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 the 3rd
The focal length of lens, f4 is 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.
4. the large aperture high definition optical system according to Claims 2 or 3 is it is characterised in that the material of the first lens reflects
Rate Nd1, material Abbe constant Vd1 meet：1.74<Nd1<1.90,37<Vd1<55.
5. the large aperture high definition optical system according to Claims 2 or 3 is it is characterised in that the material of the second lens reflects
Rate Nd2, material Abbe constant Vd2 meet：1.47<Nd2<1.62,50<Vd2<80.
6. the large aperture high definition optical system according to Claims 2 or 3 is it is characterised in that the material of the 3rd lens reflects
Rate Nd3, material Abbe constant Vd3 meet：1.75<Nd3<1.95,17<Vd3<40.
7. the large aperture high definition optical system according to Claims 2 or 3 is it is characterised in that the material of the 4th lens reflects
Rate Nd4, material Abbe constant Vd4 meet：1.55<Nd4<1.68,45<Vd4<70.
8. the large aperture high definition optical system according to Claims 2 or 3 is it is characterised in that the material of the 5th lens reflects
Rate Nd5, material Abbe constant Vd5 meet：1.75<Nd5<1.95,17<Vd5<35.
9. the large aperture high definition optical system according to Claims 2 or 3 is it is characterised in that the material of the 6th lens reflects
Rate Nd6, material Abbe constant Vd6 meet：1.75<Nd6<1.95,35<Vd6<55.
10. a kind of camera lens is it is characterised in that be provided with the large aperture high definition optics described in any one of claim 1-9 in camera lens
System.
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| CN201611209922.9A CN106443976B (en) | 2016-12-24 | 2016-12-24 | Large aperture high definition optical system and its camera lens of application |
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| CN201611209922.9A CN106443976B (en) | 2016-12-24 | 2016-12-24 | Large aperture high definition optical system and its camera lens of application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505691A (en) * | 2017-09-28 | 2017-12-22 | 广东弘景光电科技股份有限公司 | The high pixel optics system of large aperture |
| 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 |
| TWI647478B (en) * | 2018-01-15 | 2019-01-11 | 玉晶光電股份有限公司 | Optical imaging lens |
| CN109375341A (en) * | 2018-09-20 | 2019-02-22 | 苏州莱能士光电科技股份有限公司 | A kind of vehicle-mounted reverse image optical imaging system |
| 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 |
| CN114815175A (en) * | 2017-05-24 | 2022-07-29 | 广东弘景光电科技股份有限公司 | Wide-angle high-definition optical system and camera module applying same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114815175A (en) * | 2017-05-24 | 2022-07-29 | 广东弘景光电科技股份有限公司 | Wide-angle high-definition optical system and camera module applying same |
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| 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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