CN108535847B - Super wide angle high pixel fisheye optical system and camera module of using thereof - Google Patents
Super wide angle high pixel fisheye optical system and camera module of using thereof Download PDFInfo
- Publication number
- CN108535847B CN108535847B CN201810692640.1A CN201810692640A CN108535847B CN 108535847 B CN108535847 B CN 108535847B CN 201810692640 A CN201810692640 A CN 201810692640A CN 108535847 B CN108535847 B CN 108535847B
- Authority
- CN
- China
- Prior art keywords
- lens
- plane side
- optical system
- convex surface
- image plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The embodiment of the invention discloses a super-wide-angle high-pixel fisheye optical system, which as shown in fig. 1, sequentially comprises the following components from an object plane to an image plane along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. On the other hand, the embodiment of the invention also provides a camera module. The embodiment of the invention mainly comprises 8 lenses, and has less lenses and simple structure; different lenses are combined with each other and optical power is reasonably distributed, and the lens has good optical performance of 200-DEG ultra-wide angle, over 2000-ten thousand high pixels and the like, and is suitable for professional panoramic VR cameras and micro single cameras.
Description
Technical field:
the invention relates to an optical system and a camera module applied to the optical system, in particular to an ultra-wide-angle high-pixel fisheye optical system and a camera module applied to the optical system.
The background technology is as follows:
the existing optical system or camera module applied to professional panoramic VR cameras and micro single cameras has the problems of large number of lenses and complex structure.
The invention comprises the following steps:
in order to solve the problems of large number of lenses and complex structure of the existing optical systems or camera modules applied to professional panoramic VR cameras and micro single cameras, the embodiment of the invention provides an ultra-wide-angle high-pixel fisheye optical system.
An ultra-wide angle high pixel fisheye optical system, comprising, in order from an object plane to an image plane along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens;
the object plane side of the first lens is a convex surface, the image plane side is a concave surface, and the focal power of the first lens is negative;
the object plane side of the second lens is a convex surface, the image plane side is a concave surface, and the focal power of the second lens is negative;
the object plane side of the third lens is a concave surface, the image plane side is a convex surface, and the focal power of the third lens is negative;
the object plane side of the fourth lens is a convex surface, the image plane side is a concave surface, and the focal power of the fourth lens is positive;
the object plane side of the fifth lens is a convex surface, the image plane side is a convex surface, and the focal power of the fifth lens is positive;
the object plane side of the sixth lens is a convex surface, the image plane side is a convex surface, and the focal power of the sixth lens is positive;
the object plane side of the seventh lens is a concave surface, the image plane side is a concave surface, and the focal power of the seventh lens is negative;
the object plane side of the eighth lens is a convex surface, the image plane side is a convex surface, and the focal power of the eighth lens is positive.
On the other hand, the embodiment of the invention also provides a camera module.
The camera module at least comprises an optical lens, wherein the ultra-wide angle high-pixel fisheye optical system is arranged in the optical lens.
The optical system and the camera module of the embodiment of the invention mainly comprise 8 lenses, and have fewer lenses and simple structure; different lenses are combined with each other and optical power is reasonably distributed, and the lens has good optical performance of 200-DEG ultra-wide angle, over 2000-ten thousand high pixels and the like, and is suitable for professional panoramic VR cameras and micro single cameras.
Description of the drawings:
in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an optical system or camera module according to the present invention;
FIG. 2 is a graph of field curvature and distortion of an optical system or camera module of the present invention;
FIG. 3 is a color chart of an optical system or camera module according to the present invention;
FIG. 4 is a graph of MTF of an optical system or camera module of the present invention;
fig. 5 is a diagram showing the relative illuminance of the optical system or the camera module according to the present invention.
The specific embodiment is as follows:
in order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
When embodiments of the present invention refer to the ordinal terms "first," "second," etc., it is to be understood that they are merely used for distinguishing between them unless the order of their presentation is indeed dependent on the context.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the invention provides an ultra-wide-angle high-pixel fisheye optical system, as shown in fig. 1, comprising, in order from an object plane to an image plane along an optical axis: a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, and an eighth lens 8.
The object plane side of the first lens 1 is a convex surface, the image plane side is a concave surface, and the focal power of the first lens is negative;
the object plane side of the second lens 2 is a convex surface, the image plane side is a concave surface, and the focal power of the second lens is negative;
the object plane side of the third lens 3 is a concave surface, the image plane side is a convex surface, and the focal power of the third lens is negative;
the object plane side of the fourth lens 4 is a convex surface, the image plane side is a concave surface, and the focal power of the fourth lens is positive;
the object plane side of the fifth lens 5 is a convex surface, the image plane side is a convex surface, and the focal power thereof is positive;
the object plane side of the sixth lens element 6 is convex, the image plane side is convex, and the focal power thereof is positive;
the object plane side of the seventh lens 7 is a concave surface, the image plane side is a concave surface, and the focal power thereof is negative;
the eighth lens element 8 has a convex object-side surface, a convex image-side surface, and a positive optical power.
The optical system of the embodiment of the invention mainly comprises 8 lenses, and has less lenses and simple structure; different lenses are combined with each other and optical power is reasonably distributed, and the lens has good optical performance of 200-DEG ultra-wide angle, over 2000-ten thousand high pixels and the like, and is suitable for professional panoramic VR cameras and micro single cameras.
Further, as a preferred embodiment of the present solution, not by way of limitation, the sixth lens 6 and the seventh lens 7 are cemented with each other to form a combined lens, the optical power of which is negative. The structure is simple, the optical power is reasonably distributed by adopting the mutual combination of different lenses, and the lens has good optical performance of 200-DEG ultra-wide angle, over 2000 ten thousand high pixels and the like.
Still further, as a preferred embodiment of the present embodiment, not limiting, the following condition is satisfied between the combined focal length f67 of the sixth lens 6 and the seventh lens 7 and the focal length f of the entire optical system: -7.25< f67/f < -6.17. The structure is simple, the optical power is reasonably distributed by adopting the mutual combination of different lenses, and the lens has good optical performance of 200-DEG ultra-wide angle, over 2000 ten thousand high pixels and the like.
Further, as a specific embodiment of the present embodiment, but not limited to, the refractive index Nd6 of the material and the abbe constant Vd6 of the sixth lens 6 satisfy: nd6 is less than 1.60, and Vd6 is more than 68; the structure is simple, and good optical performance can be ensured.
Further, as a specific embodiment of the present embodiment, but not limited to, the refractive index Nd7 of the material and the abbe constant Vd7 of the seventh lens 7 satisfy: nd7 is more than 1.92, and Vd7 is less than 21. The structure is simple, and good optical performance can be ensured.
Further, as a specific embodiment of the present embodiment, not limiting, each lens of the optical system satisfies the following condition:
(1)-6.72<f1/f<-6.12；
(2)-3.84<f2/f<-3.25；
(3)-55.2<f3/f<-40.3；
(4)5.10<f4/f<5.83；
(5)4.33<f5/f<5.12；
(6)-7.25<f67/f<-6.17；
(7)2.31<f8/f<3.15；
wherein f is the focal length of the whole optical system, f1 is the focal length of the first lens 1, f2 is the focal length of the second lens 2, f3 is the focal length of the third lens 3, f4 is the focal length of the fourth lens 4, f5 is the focal length of the fifth lens 5, f67 is the combined focal length of the sixth lens 6 and the seventh lens 7, and f8 is the focal length of the eighth lens 8. The structure is simple, the optical power is reasonably distributed by adopting the mutual combination of different lenses, and the lens has good optical performance of 200-DEG ultra-wide angle, over 2000 ten thousand high pixels and the like.
Further, as a specific embodiment of the present embodiment, not limited thereto, the material refractive index Nd1, the material abbe constant Vd1 of the first lens 1 satisfy: nd1 is more than 1.75, vd1 is less than 50; the focal length f1 of the first lens 1 satisfies: -6.72< f1/f < -6.12, f being the focal length of the whole optical system. The structure is simple, and good optical performance can be ensured.
Still further, as a specific embodiment of the present embodiment, without limitation, the refractive index Nd2 of the material of the second lens 2, the abbe constant Vd2 of the material satisfy: nd2 is less than 1.60, and Vd2 is more than 60; the focal length f2 of the second lens 2 satisfies: -3.84< f2/f < -3.25, f being the focal length of the whole optical system. The structure is simple, and good optical performance can be ensured.
Further, as a specific embodiment of the present embodiment, but not limited to, the refractive index Nd3 of the material and the abbe constant Vd3 of the third lens 3 satisfy: nd3 is more than 1.75, vd3 is less than 50; the focal length f3 of the third lens 3 satisfies: -55.2< f3/f < -40.3, f being the focal length of the whole optical system. The structure is simple, and good optical performance can be ensured.
Still further, as a specific embodiment of the present embodiment, without limitation, the material refractive index Nd4, the material abbe constant Vd4 of the fourth lens 4 satisfy: nd4 is more than 1.88, vd4 is less than 40; the focal length f4 of the fourth lens 4 satisfies: 5.10< f4/f <5.83, f being the focal length of the whole optical system. The structure is simple, and good optical performance can be ensured.
Further, as a specific embodiment of the present embodiment, not limiting, the refractive index Nd5 of the material and the abbe constant Vd5 of the fifth lens 5 satisfy: nd5 is less than 1.60, vd5 is more than 67; the focal length f5 of the fifth lens 5 satisfies: 4.33< f5/f <5.12, f being the focal length of the whole optical system. The structure is simple, and good optical performance can be ensured.
Still further, as a specific embodiment of the present embodiment, without limitation, the refractive index Nd8 of the material and the abbe constant Vd8 of the eighth lens 8 satisfy: nd8 is less than 1.78, and Vd8 is more than 49; the focal length f8 of the eighth lens 8 satisfies: 2.31< f8/f <3.15, f being the focal length of the whole optical system. The structure is simple, and good optical performance can be ensured.
Still further, as a specific embodiment of the present embodiment, not limiting, an aperture stop of the optical system is located between the fifth lens 5 and the sixth lens 6, near the sixth lens 6 side. For adjusting the intensity of the light beam.
Still further, as a specific embodiment of the present invention, not limited thereto, the first lens 1 to the eighth lens 8 of the optical system are all made of glass material, and the resolving power of the optical lens can be improved.
Specifically, in the present embodiment, with reference to fig. 1, the lens focal length f=5.94 mm, the diaphragm index F/no=2.8, the angle of view 2ω=200°, and the chip sensor:4/3 feet, 2000 ten thousand pixels. The basic parameters of the optical system are shown in the following table:
in the table, S1 and S2 are two surfaces of the first lens 1 along the optical axis from the object plane to the image plane; s3 and S4 correspond to two surfaces of the second lens 2; s5 and S6 correspond to two surfaces of the third lens 3; s7 and S8 correspond to two surfaces of the fourth lens 4; s9 and S10 correspond to two surfaces of the fifth lens 5; STO is the position of the diaphragm; s12 and S13 correspond to two surfaces of the sixth lens 6; s13 and S14 correspond to two surfaces of the seventh lens 7; s15 and S16 correspond to two surfaces of the eighth lens 8; s17 and S18 correspond to two surfaces of the filter between the eighth lens 8 and the image plane 10.
More specifically, the fifth lens 5 and the eighth lens 8 are glass aspherical lenses, which satisfy the following equations:
wherein, the parameter c=1/R is the curvature corresponding to the radius, y is the radial coordinate, the unit is the same as the lens length unit, k is the conic coefficient, a 1 To a 5 The coefficients corresponding to the radial coordinates are respectively obtained. The aspherical correlation values of the S9 surface and the S10 surface of the fifth lens 5, the S15 surface and the S16 surface of the eighth lens 8 are shown in the following table:
as can be seen from fig. 2 to 5, the optical system in the present embodiment has good optical performance of 200 ° super wide angle, over 2000 ten thousand high pixels, and the like.
The camera module at least comprises an optical lens, wherein the ultra-wide angle high-pixel fisheye optical system is arranged in the optical lens.
The camera module of the embodiment of the invention mainly comprises 8 lenses, and has less lenses and simple structure; different lenses are combined with each other and optical power is reasonably distributed, and the lens has good optical performance of 200-DEG ultra-wide angle, over 2000-ten thousand high pixels and the like, and is suitable for professional panoramic VR cameras and micro single cameras.
The foregoing description of one or more embodiments provided in connection with the specific disclosure is not intended to limit the practice of the invention to such description. The method, structure, etc. similar to or identical to those of the present invention, or some technical deductions or substitutions are made on the premise of the inventive concept, should be regarded as the protection scope of the present invention.
Claims (7)
1. The ultra-wide angle high-pixel fisheye optical system sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens from an object plane to an image plane along an optical axis; it is characterized in that the method comprises the steps of,
the object plane side of the first lens is a convex surface, the image plane side is a concave surface, and the focal power of the first lens is negative;
the object plane side of the second lens is a convex surface, the image plane side is a concave surface, and the focal power of the second lens is negative;
the object plane side of the third lens is a concave surface, the image plane side is a convex surface, and the focal power of the third lens is negative;
the object plane side of the fourth lens is a convex surface, the image plane side is a concave surface, and the focal power of the fourth lens is positive;
the object plane side of the fifth lens is a convex surface, the image plane side is a convex surface, and the focal power of the fifth lens is positive;
the object plane side of the sixth lens is a convex surface, the image plane side is a convex surface, and the focal power of the sixth lens is positive;
the object plane side of the seventh lens is a concave surface, the image plane side is a concave surface, and the focal power of the seventh lens is negative;
the object plane side of the eighth lens is a convex surface, the image plane side is a convex surface, and the focal power of the eighth lens is positive;
the sixth lens and the seventh lens are mutually glued to form a combined lens, and the focal power of the combined lens is negative;
each lens of the optical system satisfies the following condition:
（1）-6.72＜f1/f＜-6.12；
（2）-3.84＜f2/f＜-3.25；
（3）-55.2＜f3/f＜-40.3；
（4）5.10＜f4/f＜5.83；
（5）4.33＜f5/f＜5.12；
（6）-7.25＜f67/f＜-6.17；
（7）2.31＜f8/f＜3.15；
wherein f is the focal length of the whole optical system, f1 is the focal length of the first lens, f2 is the focal length of the second lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, f5 is the focal length of the fifth lens, f67 is the combined focal length of the sixth lens and the seventh lens, and f8 is the focal length of the eighth lens;
the field angle 2ω=200° of the optical system.
2. The ultra-wide-angle high-pixel fisheye optical system of claim 1 wherein the material refractive index Nd1, the material abbe constant Vd1 of the first lens satisfy: nd1 is more than 1.75, and Vd1 is less than 50.
3. The ultra-wide-angle high-pixel fisheye optical system of claim 1 wherein the material refractive index Nd2, the material abbe constant Vd2 of the second lens satisfy: nd2 is less than 1.60, and Vd2 is more than 60.
4. The ultra-wide-angle high-pixel fisheye optical system of claim 1 wherein the material refractive index Nd3, the material abbe constant Vd3 of the third lens satisfy: nd3 is more than 1.75, and Vd3 is less than 50.
5. The ultra-wide-angle high-pixel fisheye optical system of claim 1 wherein the fourth lens has a material refractive index Nd4 and a material abbe constant Vd4 that satisfy: nd4 is more than 1.88, and Vd4 is less than 40.
6. The ultra-wide-angle high-pixel fisheye optical system of claim 1 wherein the fifth lens has a material refractive index Nd5 and a material abbe constant Vd5 that satisfy: nd5 is less than 1.60, and Vd5 is more than 67.
7. An image pickup module at least comprising an optical lens, wherein the ultra-wide angle high-pixel fisheye optical system of any one of claims 1-6 is installed in the optical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810692640.1A CN108535847B (en) | 2018-06-29 | 2018-06-29 | Super wide angle high pixel fisheye optical system and camera module of using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810692640.1A CN108535847B (en) | 2018-06-29 | 2018-06-29 | Super wide angle high pixel fisheye optical system and camera module of using thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108535847A CN108535847A (en) | 2018-09-14 |
| CN108535847B true CN108535847B (en) | 2023-06-16 |
Family
ID=63487244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810692640.1A Active CN108535847B (en) | 2018-06-29 | 2018-06-29 | Super wide angle high pixel fisheye optical system and camera module of using thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108535847B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880292B (en) * | 2020-06-20 | 2023-08-22 | 广东弘景光电科技股份有限公司 | Small-volume fisheye camera module with ultra-wide angle, ultra-high pixel and low chromatic aberration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009128654A (en) * | 2007-11-26 | 2009-06-11 | Sony Corp | Fisheye system imaging lens |
| WO2017164607A1 (en) * | 2016-03-22 | 2017-09-28 | 주식회사 에이스솔루텍 | Lens optical system and photographing device |
| CN206773278U (en) * | 2017-05-26 | 2017-12-19 | 东莞市宇瞳光学科技股份有限公司 | One kind is without the wide working distance 6MP machine visual lens of thermalization |
| CN107728292A (en) * | 2017-11-08 | 2018-02-23 | 广东弘景光电科技股份有限公司 | High pixel ultra wide-angle imaging module |
| JP2018081240A (en) * | 2016-11-17 | 2018-05-24 | コニカミノルタ株式会社 | Imaging optical system and imaging apparatus |
-
2018
- 2018-06-29 CN CN201810692640.1A patent/CN108535847B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009128654A (en) * | 2007-11-26 | 2009-06-11 | Sony Corp | Fisheye system imaging lens |
| WO2017164607A1 (en) * | 2016-03-22 | 2017-09-28 | 주식회사 에이스솔루텍 | Lens optical system and photographing device |
| JP2018081240A (en) * | 2016-11-17 | 2018-05-24 | コニカミノルタ株式会社 | Imaging optical system and imaging apparatus |
| CN206773278U (en) * | 2017-05-26 | 2017-12-19 | 东莞市宇瞳光学科技股份有限公司 | One kind is without the wide working distance 6MP machine visual lens of thermalization |
| CN107728292A (en) * | 2017-11-08 | 2018-02-23 | 广东弘景光电科技股份有限公司 | High pixel ultra wide-angle imaging module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108535847A (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105974561B (en) | Wide-angle camera | |
| KR102380229B1 (en) | Photographing lens system and photographing apparatus having the same | |
| CN107942478B (en) | Lens module | |
| CN107065137B (en) | Super wide angle optical system of making a video recording and module of making a video recording of using thereof | |
| CN106772935B (en) | Lens system and fixed-focus lens | |
| CN107728292B (en) | High-pixel ultra-wide angle camera module | |
| CN108445608B (en) | High-pixel wide-angle infrared optical system and camera module applying same | |
| JP2008268268A (en) | Imaging lens | |
| CN210072173U (en) | Wide-angle day and night confocal athermalization optical system and camera module applying same | |
| CN108319004B (en) | High-pixel ultra-wide angle optical system and camera module applying same | |
| CN107193111B (en) | High-pixel fisheye optical system and camera module applying same | |
| CN107065138B (en) | Small-volume high-pixel fish-eye optical system and camera module applying same | |
| CN216870931U (en) | Optical system based on free-form surface design and camera module | |
| CN111045197A (en) | High-definition wide-angle day and night confocal optical system and camera module applying same | |
| CN111880292B (en) | Small-volume fisheye camera module with ultra-wide angle, ultra-high pixel and low chromatic aberration | |
| CN211878291U (en) | High-definition wide-angle day and night confocal optical system and camera module | |
| CN212433497U (en) | Small-size fisheye optical system with ultra-wide angle, ultra-high pixel and low chromatic aberration and camera module | |
| CN107608058B (en) | Low distortion wide angle optical system | |
| CN108761745B (en) | Wide-angle optical system and camera module using same | |
| CN108535847B (en) | Super wide angle high pixel fisheye optical system and camera module of using thereof | |
| CN107621689B (en) | Miniaturized fish-eye optical system | |
| CN208421383U (en) | The high pixel fish eye optical systems of ultra-wide angle and its camera module of application | |
| CN114647068B (en) | Optical system | |
| CN110161655A (en) | Wide-angle day and night camera module of the confocal type without thermalization optical system and its application | |
| CN111781713B (en) | Ultra-wide-angle ultra-high pixel low-chromatic aberration small-volume fisheye optical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |