CN114815175B - Wide-angle high-definition optical system and camera module applying same - Google Patents
Wide-angle high-definition optical system and camera module applying same Download PDFInfo
- Publication number
- CN114815175B CN114815175B CN202210339181.5A CN202210339181A CN114815175B CN 114815175 B CN114815175 B CN 114815175B CN 202210339181 A CN202210339181 A CN 202210339181A CN 114815175 B CN114815175 B CN 114815175B
- Authority
- CN
- China
- Prior art keywords
- lens
- optical system
- plane side
- wide
- focal length
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 75
- 239000000463 material Substances 0.000 claims description 23
- 238000003384 imaging method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G02B13/0055—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
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
This application is a divisional application with application number 201710371784.2. The embodiment of the invention discloses a wide-angle high-definition optical system, which sequentially comprises the following components along an optical axis from an object plane to an image plane: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; wherein the fifth lens and the sixth lens are mutually glued to form a combined lens, and-10 mm < f1< -2mm, 5mm < f56<15mm are satisfied. On the other hand, the embodiment of the invention also provides a camera module. The embodiment of the invention mainly comprises six lenses, and has the advantages of fewer lenses and simple structure; the optical power distribution is reasonable by adopting the mutual combination of different lenses, and the fifth lens and the sixth lens are cemented lenses, so that the invention has the optical performances of large aperture, high pixel, low distortion, good athermalization and the like.
Description
The application is a divisional application, the application number of the original application is 201710371784.2, the application date is 2017, 5 months and 24 days, and the name of the application is a high-definition wide-angle optical system and an imaging module applied by the same.
Technical field:
the invention relates to an optical system and a camera module applied to the optical system, in particular to a wide-angle high-definition optical system composed of six lenses and a vehicle-mounted camera module applied to the optical system.
The background technology is as follows:
with the application and popularization of automobile safe driving systems, vehicle-mounted camera modules are also commonly used. The camera module applied to the safety monitoring in the vehicle is required to be suitable for clear imaging in daytime and night environments, so that the camera module needs to consider day-night infrared confocal; meanwhile, in order to meet the requirement of detail identification of passengers in the vehicle, the camera module needs to have higher definition. The existing optical system or camera module generally has the defects of excessive lenses and complex structure in order to meet the requirements.
The invention comprises the following steps:
in order to solve the problems of excessive lenses and complex structures of the existing optical system or camera module, one aspect of the embodiment of the invention provides a wide-angle high-definition optical system.
The wide-angle high-definition optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object plane to an image plane along an optical axis;
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 convex surface, the image plane side is a concave 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 convex 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 concave surface, the image plane side is a convex surface, and the focal power of the sixth lens is negative;
the fifth lens and the sixth lens are mutually glued to form a combined lens, TTL/f is less than or equal to 7.5, wherein TTL is the distance between the top point of the object plane side of the first lens of the optical system and the imaging plane, and f is the focal length of the whole optical system;
the optical system satisfies the following conditions:
(1)-10mm<f1<-2mm；
(2)5mm<f56<15mm；
wherein f1 is a focal length of the first lens, and f56 is a focal length of the fifth lens and the sixth lens.
On the other hand, the embodiment of the invention also provides a camera module.
The camera module at least comprises an optical lens, and the wide-angle high-definition optical system is arranged in the optical lens.
The embodiment of the invention mainly comprises six lenses, and has the advantages of fewer lenses and simple structure; the optical power distribution is reasonable by adopting the mutual combination of different lenses, and the fifth lens and the sixth lens are cemented lenses, so that the invention has the optical performances of large aperture, high pixel, low distortion, good athermalization and the like.
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 showing distortion of an optical system or camera module of the present invention at +25℃;
FIG. 3 is a graph showing the MTF of an optical system or camera module of the present invention at +25℃;
FIG. 4 is a graph showing the relative illuminance of an optical system or camera module of the present invention at +25℃;
FIG. 5 is a graph showing the MTF of an optical system or camera module of the present invention at-40 ℃;
fig. 6 is a graph showing MTF at +85℃.
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.
As shown in fig. 1, a wide-angle high-definition optical system is provided with, in order from an object plane to an image plane 8 along an optical axis: a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, and a sixth lens 6.
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 convex surface, the image plane side is a concave 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 convex surface, and the focal power 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 6 is a concave surface, the image plane side is a convex surface, and the focal power thereof is negative;
the fifth lens 5 and the sixth lens 6 are glued to each other to form a combined lens, and TTL/f is less than or equal to 7.5, wherein TTL is the distance between the top of the object plane side of the first lens of the optical system and the imaging plane, and f is the focal length of the whole optical system.
The embodiment of the invention mainly comprises six lenses, and has the advantages of fewer lenses and simple structure; the optical power distribution is reasonable by adopting the mutual combination of different lenses, and the fifth lens and the sixth lens are cemented lenses, so that the invention has the optical performances of large aperture, high pixel, low distortion, good athermalization and the like.
Further, the optical system satisfies the following conditions: (1) 5mm < f56<15mm; wherein f56 is the focal length of the fifth lens element 5 and the sixth lens element 6, and f is the focal length of the entire optical system, which takes on the EFL. The structure is simple and compact, and good optical performance can be ensured.
Still further, each lens of the optical system satisfies the following condition: (1) -10mm < f1< -2mm; (2) -10mm < f2< -2mm; (3) -60mm < f3< -20mm; (4) 2mm < f4<5mm; (5) 2mm < f5<5mm; (6) -5mm < f6< -2mm; wherein 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, and f6 is the focal length of the sixth lens 6. The optical performance of large aperture, high pixel, low distortion, good athermalization and the like is realized by adopting the mutual combination of different lenses and reasonably distributing the focal power.
Further, each lens of the optical system satisfies the following condition: (1) -5.0< f1/f < -1.5; (2) -5.0< f2/f < -1.5; (3) -30< f3/f < -10; (4) 0.8< f4/f <1.7; (5) 0.8< f5/f <1.7. The optical performance of large aperture, high pixel, low distortion, good athermalization and the like is realized by adopting the mutual combination of different lenses and reasonably distributing the focal power.
Specifically, the refractive index Nd1 of the material of the first lens 1, the abbe constant Vd1 of the material satisfy: 1.74< Nd1<1.90, 37< Vd1<55. Good optical properties can be ensured.
More specifically, the refractive index Nd2 of the material of the second lens 2 and the abbe constant Vd2 of the material satisfy: 1.74< nd2<1.90, 37< vd2<55. Good optical properties can be ensured.
Further, the refractive index Nd3 of the material of the third lens 3, the abbe constant Vd3 of the material satisfy: 1.75< Nd3<1.95, 17< Vd3<40. Good optical properties can be ensured.
Still further, the material refractive index Nd4, the material abbe constant Vd4 of the fourth lens 4 satisfy: 1.64< Nd4<1.90, 37< Vd4<60. Good optical properties can be ensured.
Still further, the refractive index Nd5 of the material and the abbe constant Vd5 of the fifth lens 5 satisfy: 1.60< Nd5<1.85, 40< Vd5<60; good optical properties can be ensured.
Further, the refractive index Nd6 of the material of the sixth lens 6 and the abbe constant Vd6 of the material satisfy: 1.75< nd6<1.95, 17< vd6<40. Good optical properties can be ensured.
Still further, a stop 7 of the optical system is provided between the third lens 3 and the fourth lens 4. The structure is simple, and the device is used for adjusting the intensity of the light beam.
Specifically, in the present embodiment, the focal length f of the present optical system is 1.97mm, the diaphragm index fno is 2.0, the angle of view 2ω=150° is suitable for 1/4 "high definition Sensor". The basic parameters of the optical system are shown in the following table:
in the table, from the object plane to the image plane 8 along the optical axis, S1 and S2 are two surfaces of the first lens 1; 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, corresponding to the position of the system aperture stop STO; s8 and S9 correspond to two surfaces of the fourth lens 4; s10 and S11 correspond to two surfaces of the fifth lens 5; s11 and S12 correspond to two surfaces of the sixth lens 6; s13, S14 correspond to two surfaces of the cover glass located between the sixth lens 6 and the image plane 8; s15 corresponds to the Sensor imaging plane 8.
As can be seen from fig. 2 to 6, the optical system in the present embodiment adopts different lens combinations and reasonably distributes optical power to achieve optical performance such as large aperture, high pixel, low distortion, good athermalization, and the like.
The camera module at least comprises an optical lens, wherein the wide-angle high-definition optical system is arranged in the optical lens.
The camera module of the embodiment of the invention adopts different lens combinations and reasonably distributes focal power to realize the optical performances of large aperture, high pixel, low distortion, good heat difference elimination and the like.
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 (8)
1. The wide-angle high-definition optical system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged 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 convex surface, the image plane side is a concave 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 convex 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 concave surface, the image plane side is a convex surface, and the focal power of the sixth lens is negative;
the fifth lens and the sixth lens are mutually glued to form a combined lens, TTL/f is less than or equal to 7.5, wherein TTL is the distance between the top point of the object plane side of the first lens of the optical system and the imaging plane, and f is the focal length of the whole optical system;
the optical system satisfies the following conditions:
(1)-10mm<f1<-2mm；
(2)5mm<f56<15mm；
wherein f1 is a focal length of the first lens, and f56 is a focal length of the fifth lens and the sixth lens.
2. The wide-angle high definition optical system according to claim 1, wherein each lens of the optical system satisfies the following condition:
(1)-5.0<f1/f<-1.5；
(2)-5.0<f2/f<-1.5；
(3)-30<f3/f<-10；
(4)0.8<f4/f<1.7；
(5)0.8<f5/f<1.7；
wherein 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, and f is the focal length of the whole optical system.
3. The wide-angle high-definition optical system according to claim 1 or 2, wherein the refractive index Nd1 of the material of the first lens, the abbe constant Vd1 of the material satisfy: 1.74< Nd1<1.90, 37< Vd1<55.
4. The wide-angle high-definition optical system according to claim 1 or 2, wherein the refractive index Nd2 of the material of the second lens, the abbe constant Vd2 of the material satisfy: 1.74< nd2<1.90, 37< vd2<55.
5. The wide-angle high-definition optical system according to claim 1 or 2, wherein the refractive index Nd3 of the material of the third lens, the abbe constant Vd3 of the material satisfy: 1.75< Nd3<1.95, 17< Vd3<40.
6. The wide-angle high-definition optical system according to claim 1 or 2, wherein the material refractive index Nd4, the material abbe constant Vd4 of the fourth lens satisfy: 1.64< Nd4<1.90, 37< Vd4<60.
7. The wide-angle high-definition optical system according to claim 1 or 2, wherein the refractive index Nd5 of the material of the fifth lens, the abbe constant Vd5 of the material satisfy: 1.60< Nd5<1.85, 40< Vd5<60; and/or the refractive index Nd6 of the material of the sixth lens and the Abbe constant Vd6 of the material satisfy: 1.75< nd6<1.95, 17< vd6<40.
8. An imaging module at least comprising an optical lens, wherein the wide-angle high-definition optical system as claimed in any one of claims 1 to 7 is installed in the optical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210339181.5A CN114815175B (en) | 2017-05-24 | 2017-05-24 | Wide-angle high-definition optical system and camera module applying same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210339181.5A CN114815175B (en) | 2017-05-24 | 2017-05-24 | Wide-angle high-definition optical system and camera module applying same |
| CN201710371784.2A CN106990507B (en) | 2017-05-24 | 2017-05-24 | High-definition wide-angle optical system and camera module applying same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710371784.2A Division CN106990507B (en) | 2017-05-24 | 2017-05-24 | High-definition wide-angle optical system and camera module applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114815175A CN114815175A (en) | 2022-07-29 |
| CN114815175B true CN114815175B (en) | 2024-04-05 |
Family
ID=59420641
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210339181.5A Active CN114815175B (en) | 2017-05-24 | 2017-05-24 | Wide-angle high-definition optical system and camera module applying same |
| CN201710371784.2A Active CN106990507B (en) | 2017-05-24 | 2017-05-24 | High-definition wide-angle optical system and camera module applying same |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710371784.2A Active CN106990507B (en) | 2017-05-24 | 2017-05-24 | High-definition wide-angle optical system and camera module applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN114815175B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108363161A (en) * | 2018-01-05 | 2018-08-03 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005227569A (en) * | 2004-02-13 | 2005-08-25 | Nagano Kogaku Kenkyusho:Kk | Two-group zoom lens |
| JP2017027001A (en) * | 2015-07-27 | 2017-02-02 | 京セラ株式会社 | Imaging lens and imaging apparatus |
| JP2017037119A (en) * | 2015-08-07 | 2017-02-16 | 日立マクセル株式会社 | Wide-angle image capturing lens system and image capturing device |
| CN106443976A (en) * | 2016-12-24 | 2017-02-22 | 广东弘景光电科技股份有限公司 | Large aperture high definition optical system and lens for use thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455488B (en) * | 2010-10-29 | 2014-07-09 | 鸿富锦精密工业（深圳）有限公司 | Ultra wide-angle lens |
| KR101429887B1 (en) * | 2013-03-22 | 2014-08-13 | 주식회사 세코닉스 | Compact type wide angle lens system |
| CN205720848U (en) * | 2016-04-25 | 2016-11-23 | 今国光学工业股份有限公司 | Six chip wide-angle lens |
| CN206920685U (en) * | 2017-05-24 | 2018-01-23 | 广东弘景光电科技股份有限公司 | High definition wide-angle optics and its camera module of application |
-
2017
- 2017-05-24 CN CN202210339181.5A patent/CN114815175B/en active Active
- 2017-05-24 CN CN201710371784.2A patent/CN106990507B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005227569A (en) * | 2004-02-13 | 2005-08-25 | Nagano Kogaku Kenkyusho:Kk | Two-group zoom lens |
| JP2017027001A (en) * | 2015-07-27 | 2017-02-02 | 京セラ株式会社 | Imaging lens and imaging apparatus |
| JP2017037119A (en) * | 2015-08-07 | 2017-02-16 | 日立マクセル株式会社 | Wide-angle image capturing lens system and image capturing device |
| CN106443976A (en) * | 2016-12-24 | 2017-02-22 | 广东弘景光电科技股份有限公司 | Large aperture high definition optical system and lens for use thereof |
Non-Patent Citations (1)
| Title |
|---|
| 红外光学系统被动式无热化设计方法;申碧云;高明;;电光与控制;20120601(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114815175A (en) | 2022-07-29 |
| CN106990507B (en) | 2022-05-31 |
| CN106990507A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109581634B (en) | High-pixel wide-angle day and night confocal optical system and camera module applying same | |
| US10948689B2 (en) | Large-aperture, high-pixel optical system and camera module used thereby | |
| CN106443976B (en) | Large aperture high definition optical system and its camera lens of application | |
| CN108445608B (en) | High-pixel wide-angle infrared optical system and camera module applying same | |
| CN108319004B (en) | High-pixel ultra-wide angle optical system and camera module applying same | |
| CN111045197A (en) | High-definition wide-angle day and night confocal optical system and camera module applying same | |
| CN114815175B (en) | Wide-angle high-definition optical system and camera module applying same | |
| CN110109233A (en) | Large aperture optical system and its camera module of application | |
| CN107505691B (en) | Large aperture high pixel optical system | |
| CN211878291U (en) | High-definition wide-angle day and night confocal optical system and camera module | |
| CN106371196B (en) | The short overall length optical system of the high pixel of large aperture ultra-wide angle and its camera lens of application | |
| CN108761745B (en) | Wide-angle optical system and camera module using same | |
| CN107608056B (en) | Large aperture high pixel camera module | |
| CN206331173U (en) | Large aperture high definition optical system and its camera lens of application | |
| CN206920685U (en) | High definition wide-angle optics and its camera module of application | |
| CN210072172U (en) | Large-aperture optical system and camera module applying same | |
| CN211263920U (en) | Large-aperture wide-angle optical system and camera module applying same | |
| CN108427184A (en) | The big target surface Depth Imaging optical system of co carbonization and its camera module of application | |
| CN108490590B (en) | Day and night confocal fish eye monitoring optical system and camera module applying same | |
| WO2021012595A1 (en) | Large-aperture wide-angle optical system and photographing module applied by same | |
| CN110908074A (en) | Infrared confocal in-vehicle monitoring optical system and camera module applied by same | |
| CN209400778U (en) | Large aperture takes the photograph the camera module of remote optical system and its application | |
| CN111308648A (en) | Vehicle-mounted forward-looking optical system and camera module applied by same | |
| CN107121758B (en) | High-pixel ultra-wide-angle optical system and camera module applying same | |
| CN110737074A (en) | High-pixel infrared optical system and camera module applying same |
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 |