CN108897121A - Small size wide-angle optics and its camera module of application - Google Patents
Small size wide-angle optics and its camera module of application Download PDFInfo
- Publication number
- CN108897121A CN108897121A CN201811007884.8A CN201811007884A CN108897121A CN 108897121 A CN108897121 A CN 108897121A CN 201811007884 A CN201811007884 A CN 201811007884A CN 108897121 A CN108897121 A CN 108897121A
- Authority
- CN
- China
- Prior art keywords
- lens
- focal length
- convex surface
- small size
- object 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims description 16
- 238000003384 imaging method Methods 0.000 abstract description 6
- 230000000007 visual effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—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 four 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The embodiment of the invention discloses a kind of small size wide-angle optics, successively include from object plane to image planes along optical axis：First lens, the second lens, the third lens and the 4th 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 convex 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 convex surface, and image planes side is convex surface, and focal power is positive.On the other hand, the embodiment of the invention also provides a kind of camera modules.The optical system and camera module of the embodiment of the present invention are mainly made of 4 pieces of lens, and lens piece number is few, and structure is simple, small in size；Using the intercombination of different lens and reasonable distribution focal power, there are the band superperformances such as depth information, the big visual angle of horizontal direction, high pixel, be suitable for industry and 3D Depth Imaging field.
Description
Technical field：
The present invention relates to a kind of optical system and its camera module of application, especially a kind of small size wide-angle optics
And its camera module of application.
Background technique：
The existing optical system or camera module for being applied to industry and 3D Depth Imaging field, generally existing number of lenses
More, structure is complicated, volume problem bigger than normal.
Summary of the invention：
To overcome the existing optical system or camera module for being applied to industry and 3D Depth Imaging field, generally existing eyeglass
The problem of quantity is more, and structure is complicated, the embodiment of the invention provides a kind of small size wide-angle optics.
A kind of small size wide-angle optics successively includes from object plane to image planes along optical axis：First lens, the second lens,
The third lens and the 4th 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 convex 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 convex surface, and image planes side is convex surface, and focal power is positive.
On the other hand, the embodiment of the invention also provides a kind of camera modules.
A kind of camera module includes at least optical lens, is equipped with small size wide-angle light described above in optical lens
System.
The optical system and camera module of the embodiment of the present invention are mainly made of 4 pieces of lens, and lens piece number is few, structure letter
It is single, it is small in size；Using different lens be combined with each other and reasonable distribution focal power, have band depth information, the big visual angle of horizontal direction,
The superperformances such as high pixel are suitable for industry and 3D Depth Imaging field.
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 module of the invention；
Fig. 2 is the field curvature, distortion curve figure of optical system or camera module of the invention；
Fig. 3 is the MTF curve figure under the 850nm of optical system or camera module of the invention.
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.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The embodiment of the invention provides a kind of small size wide-angle optics, successively include from object plane to image planes along optical axis：
First lens 1, the second lens 2, the third lens 3 and the 4th lens 4.
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 convex 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 convex surface, and image planes side is convex surface, and focal power is positive.
The optical system of the embodiment of the present invention is mainly made of 4 pieces of lens, and lens piece number is few, and structure is simple, small in size；
Using the intercombination of different lens and reasonable distribution focal power, have band depth information, the big visual angle of horizontal direction, high pixel etc. good
Good performance is suitable for industry and 3D Depth Imaging field.
Further, non-limiting as the preferred embodiment of this programme, each lens of optical system meet following item
Part：
(1)-0.18<f/f1<-0.07
(2)-0.70<f/f2<-0.25
(3)0.29<f/f3<0.69
(4)0.31<f/f4<0.45
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.Pass through the intercombination and its reasonable distribution light focus of different lens
Degree has the band superperformances such as depth information, the big visual angle of horizontal direction, high pixel.
Still further, as the preferred embodiment of this programme and it is non-limiting, the Refractive Index of Material Nd1 of the first lens 1,
Material Abbe constant Vd1 meets：Nd1 > 1.60, Vd1 < 28；The focal length f1 of first lens 1 meets：-0.18<f/f1<- 0.07,
F is the focal length of entire optical system.Structure is simple, it is ensured that good optical property plays a part of to expand visual angle；When eyeglass is rolled over
Penetrating the distortion of camera lens and volume when rate Nd selects higher will reduce, and promote the use value of camera lens.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd2 of the second lens 2,
Material Abbe constant Vd2 meets：1.49 < Nd2 <, 1.55,50 < Vd2 < 58；The focal length f2 of second lens 2 meets：-0.70<
f/f2<- 0.25, f are the focal length of entire optical system.Structure is simple, it is ensured that good optical property is further ensured that view
Angle improves camera lens camera lens parsing power and reduces the effect of distortion.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd3 of the third lens 3,
Material Abbe constant Vd3 meets：Nd3 > 1.60, Vd3 < 28；The focal length f3 of the third lens 3 meets：0.29<f/f3<0.69, f
For the focal length of entire optical system.Structure is simple, it is ensured that good optical property further increases camera lens parsing power and balance
System aberration.
Further, non-limiting, Refractive Index of Material Nd4, the material of the 4th lens 4 as the preferred embodiment of this programme
Expect that Abbe constant Vd4 meets：1.49 < Nd4 <, 1.55,50 < Vd4 < 58；The focal length f4 of 4th lens 4 meets：0.31<f/f4
<0.45, f is the focal length of entire optical system.Structure is simple, it is ensured that good optical property rises and receives light action, and reduces and be
System distortion.
Still further, as this programme preferred embodiment and non-limiting, the first lens 1, the second lens 2, third
Lens 3 and the 4th lens 4 are plastic aspheric lenes.Structure is simple, and the parsing power of optical lens can be improved, and guarantees good
Good optical property.
Further, non-limiting as the preferred embodiment of this programme, the aperture diaphragm 5 of optical system is located at the
Between three lens 3 and the 4th lens 4, close to 3 side of the third lens.Structure is simple, for adjusting the intensity of light beam.
Specifically, in conjunction with Fig. 1, in the present embodiment, the 3D sensor of this optical system matching 1/4 ", focal length f are
1.74mm, stop index F No. are 1.2, and horizontal direction field angle is 100 °.Every basic parameter such as following table of this optical system
It is shown：
| Surface | Radius of curvature R (mm) | Interval D (mm) | Refractive index Nd | Dispersion values Vd |
| S1 | 17.100 | 0.500 | 1.61400 | 25.57 |
| S2 | 6.170 | 0.130 | ||
| S3 | 4.500 | 0.540 | 1.53100 | 55.75 |
| S4 | 1.500 | 4.620 | ||
| S5 | 3.400 | 1.870 | 1.61400 | 25.57 |
| S6 | -9.000 | 0.250 | ||
| S7 | INFINITY | 1.840 | ||
| S8 | 6.550 | 1.700 | 1.53100 | 55.75 |
| S9 | -3.350 | 0.300 | ||
| S10 | INFINITY | 0.210 | 1.51700 | 64.21 |
In upper table, along optical axis 6 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；S7 is diaphragm STO；S8, S9 correspond to
Two surfaces of four lens 4；One of surface of optical filter of the S10 between the 4th lens 4 and image planes 6.
More specifically, first lens 1, the second lens 2, the third lens 3 and the 4th lens 4 are aspherical shape
Shape meets following equation：
Wherein, parameter c=1/R, as curvature corresponding to radius, y are radial coordinate, unit and length of lens unit phase
Together, k is circular cone whose conic coefficient, a1To a8Coefficient corresponding to respectively each radial coordinate.The S1 table of first lens 1
Face and the surface S2, the surface S3 of the second lens 2 and the surface S4, the surface S5 of the third lens 3 and the surface S6 and the 4th lens 4
The surface S8 and the surface S9 aspherical correlation values it is as shown in the table：
| K | α2 | α3 | α4 | α5 | α6 | α7 | |
| S1 | -2.142 | -7.076E-05 | -3.046E-06 | 8.778E-08 | -1.988E-09 | 2.580E-11 | |
| S2 | 0.579 | 1.065E-03 | -6.359E-06 | 5.214E-07 | 9.333E-08 | 3.880E-09 | |
| S3 | -2.395 | 4.187E-03 | -2.247E-04 | 7.870E-06 | -1.499E-07 | 4.530E-09 | 3.770E-10 |
| S4 | -0.845 | 7.666E-03 | -2.741E-04 | -9.560E-05 | -4.130E-06 | -7.730E-08 | 2.410E-08 |
| S5 | -0.062 | -7.274E-05 | 1.200E-04 | 2.583E-05 | 3.992E-06 | 6.630E-07 | 1.520E-07 |
| S6 | -50.87 | 7.186E-04 | 1.698E-04 | 9.359E-05 | 3.257E-05 | 4.620E-06 | 3.110E-07 |
| S8 | -2.875 | -3.471E-03 | -1.000E-02 | 5.864E-03 | -1.290E-03 | -1.280E-04 | 9.650E-05 |
| S9 | -14.03 | -0.028 | 1.000E-02 | -2.179E-03 | 2.240E-04 | -9.500E-06 | -2.400E-07 |
As can be seen that the optical system in the present embodiment has high-resolution and extraordinary athermal in from Fig. 2 to Fig. 3
Performance.
A kind of camera module includes at least optical lens, is equipped with small size wide-angle light described above in optical lens
System.
The camera module of the embodiment of the present invention is mainly made of 4 pieces of lens, and lens piece number is few, and structure is simple, small in size；
Using the intercombination of different lens and reasonable distribution focal power, have band depth information, the big visual angle of horizontal direction, high pixel etc. good
Good performance is suitable for industry and 3D Depth Imaging field.
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 (10)
1. a kind of small size wide-angle optics successively includes from object plane to image planes along optical axis：First lens, the second lens,
Three lens and the 4th 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 convex 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 convex surface, and image planes side is convex surface, and focal power is positive.
2. small size wide-angle optics as described in claim 1, which is characterized in that each lens of optical system meet as follows
Condition：
(1)-0.18<f/f1<-0.07
(2)-0.70<f/f2<-0.25
(3)0.29<f/f3<0.69
(4)0.31<f/f4<0.45
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.
3. small size wide-angle optics as described in claim 1, which is characterized in that the Refractive Index of Material Nd1 of the first lens,
Material Abbe constant Vd1 meets：Nd1 > 1.60, Vd1 < 28；The focal length f1 of first lens meets：-0.18<f/f1<- 0.07, f
For the focal length of entire optical system.
4. small size wide-angle optics as described in claim 1, which is characterized in that the Refractive Index of Material Nd2 of the second lens,
Material Abbe constant Vd2 meets：1.49 < Nd2 <, 1.55,50 < Vd2 < 58；The focal length f2 of second lens meets：-0.70<f/
f2<- 0.25, f are the focal length of entire optical system.
5. small size wide-angle optics as described in claim 1, which is characterized in that the Refractive Index of Material Nd3 of the third lens,
Material Abbe constant Vd3 meets：Nd3 > 1.60, Vd3 < 28；The focal length f3 of the third lens meets：0.29<f/f3<0.69, f is
The focal length of entire optical system.
6. small size wide-angle optics as described in claim 1, which is characterized in that the Refractive Index of Material Nd4 of the 4th lens,
Material Abbe constant Vd4 meets：1.49 < Nd4 <, 1.55,50 < Vd4 < 58；The focal length f4 of 4th lens meets：0.31<f/
f4<0.45, f is the focal length of entire optical system.
7. such as small size wide-angle optics as claimed in any one of claims 1 to 6, which is characterized in that the first lens, second are thoroughly
Mirror, the third lens and the 4th lens are plastic aspheric lenes.
8. such as small size wide-angle optics as claimed in any one of claims 1 to 6, which is characterized in that the aperture of optical system
Diaphragm is between the third lens and the 4th lens, close to the third lens side.
9. such as small size wide-angle optics as claimed in any one of claims 1 to 6, which is characterized in that the level of optical system
Direction field angle is 100 °.
10. a kind of camera module includes at least optical lens, which is characterized in that be equipped with claim 1-9 in optical lens and appoint
Small size wide-angle optics described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007884.8A CN108897121A (en) | 2018-08-31 | 2018-08-31 | Small size wide-angle optics and its camera module of application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007884.8A CN108897121A (en) | 2018-08-31 | 2018-08-31 | Small size wide-angle optics and its camera module of application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108897121A true CN108897121A (en) | 2018-11-27 |
Family
ID=64359657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811007884.8A Pending CN108897121A (en) | 2018-08-31 | 2018-08-31 | Small size wide-angle optics and its camera module of application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108897121A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082223A1 (en) * | 2019-10-30 | 2021-05-06 | 广东弘景光电科技股份有限公司 | High-pixel infrared optical system and applied camera module thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861541A (en) * | 2007-11-22 | 2010-10-13 | 柯尼卡美能达精密光学株式会社 | Wide angle optical system, imaging lens device, monitor camera, and digital apparatus |
| JP2012230158A (en) * | 2011-04-25 | 2012-11-22 | Kyocera Corp | Imaging lens |
| CN207181800U (en) * | 2017-08-31 | 2018-04-03 | 广东弘景光电科技股份有限公司 | The external adapter imaging optical system of panorama and its external adapter camera lens of panorama of application |
| CN108445608A (en) * | 2018-05-25 | 2018-08-24 | 广东弘景光电科技股份有限公司 | High-pixel wide-angle infrared optical system and its camera module of application |
| CN208654427U (en) * | 2018-08-31 | 2019-03-26 | 广东弘景光电科技股份有限公司 | Small size wide-angle optics and its camera module of application |
-
2018
- 2018-08-31 CN CN201811007884.8A patent/CN108897121A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861541A (en) * | 2007-11-22 | 2010-10-13 | 柯尼卡美能达精密光学株式会社 | Wide angle optical system, imaging lens device, monitor camera, and digital apparatus |
| JP2012230158A (en) * | 2011-04-25 | 2012-11-22 | Kyocera Corp | Imaging lens |
| CN207181800U (en) * | 2017-08-31 | 2018-04-03 | 广东弘景光电科技股份有限公司 | The external adapter imaging optical system of panorama and its external adapter camera lens of panorama of application |
| CN108445608A (en) * | 2018-05-25 | 2018-08-24 | 广东弘景光电科技股份有限公司 | High-pixel wide-angle infrared optical system and its camera module of application |
| CN208654427U (en) * | 2018-08-31 | 2019-03-26 | 广东弘景光电科技股份有限公司 | Small size wide-angle optics and its camera module of application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082223A1 (en) * | 2019-10-30 | 2021-05-06 | 广东弘景光电科技股份有限公司 | High-pixel infrared optical system and applied camera module thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10678026B2 (en) | Optical system | |
| US11733490B2 (en) | Optical system | |
| CN110187472B (en) | Lens module | |
| US20230064260A1 (en) | High resolution lens module | |
| KR101762007B1 (en) | Imaging Lens System | |
| CN105676419B (en) | Optical system | |
| CN109143549B (en) | Lens module | |
| CN108983401A (en) | Optical lens group | |
| CN107526155B (en) | Glass-plastic mixed prime lens | |
| CN104216096B (en) | High-resolution thin lens unit | |
| CN209102995U (en) | Optical imaging lens group | |
| CN109239891A (en) | optical imaging lens group | |
| CN101950066A (en) | Near-infrared wide-angle lens | |
| CN105353499B (en) | A kind of optical lens | |
| US20160124182A1 (en) | Optical imaging lens | |
| CN109116516B (en) | Large aperture optical system and camera module using same | |
| CN108445608A (en) | High-pixel wide-angle infrared optical system and its camera module of application | |
| CN208833990U (en) | Optical lens group | |
| CN107065140A (en) | A kind of intelligent vehicle-carried high-pixel wide-angle camera lens | |
| CN111722378B (en) | Large-image-surface high-resolution fish-eye lens | |
| US20160161722A1 (en) | Imaging lens | |
| CN208654427U (en) | Small size wide-angle optics and its camera module of application | |
| CN106680973A (en) | Miniaturized large-view-field high-definition athermal prime lens | |
| CN112612115A (en) | Optical imaging lens | |
| CN112612135A (en) | Eyepiece 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 |