CN107065137A - Ultra wide-angle imaging optical system and its camera module of application - Google Patents
Ultra wide-angle imaging optical system and its camera module of application Download PDFInfo
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- CN107065137A CN107065137A CN201710201168.2A CN201710201168A CN107065137A CN 107065137 A CN107065137 A CN 107065137A CN 201710201168 A CN201710201168 A CN 201710201168A CN 107065137 A CN107065137 A CN 107065137A
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- lens
- optical system
- imaging optical
- ultra wide
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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
- G02B13/0015—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
-
- 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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The embodiment of the invention discloses a kind of ultra wide-angle imaging optical system, it is sequentially provided with along optical axis from object plane to image planes：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens；Each lens of the optical system meet following condition：‑0.2<f/f1<‑0.09；‑0.25<f/f2<‑0.15；‑0.3<f/f3<‑0.19；0.17<f/f4<0.23；0.02<f/f5<0.07；0.11<f/f67<0.18；0.12<f/f8<0.31.On the other hand, the embodiment of the present invention additionally provides a kind of camera module.The embodiment of the present invention, it is adaptable to which panorama VR cameras and 360 ° are without dead angle monitoring field, and its lens piece number is moderate, simple in construction；Meanwhile, the premium properties with 240 ° of ultra-wide angle, more than 8,000,000 pixels.
Description
Technical field：
It is especially a kind of to be applied to panorama the present invention relates to a kind of wide-angle imaging optical system and its camera module of application
The camera module of VR cameras and 360 ° of optical systems and its application without dead angle monitoring field.
Background technology：
It is existing to be applied to panorama VR cameras and 360 ° of optical systems or camera module generally existing without dead angle monitoring field
Eyeglass is excessive, baroque defect.
The content of the invention：
For overcome existing optical system or camera module exist eyeglass it is excessive, it is complicated the problem of, the embodiment of the present invention
On the one hand a kind of ultra wide-angle imaging optical system is provided.
Ultra wide-angle imaging optical system, is sequentially provided with along optical axis from object plane to image planes：First lens, the second lens, the 3rd
Lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens；Each lens of the optical system are met
Following condition：
(1)-0.2<f/f1<-0.09；
(2)-0.25<f/f2<-0.15；
(3)-0.3<f/f3<-0.19；
(4)0.17<f/f4<0.23；
(5)0.02<f/f5<0.07；
(6)0.11<f/f67<0.18；
(7)0.12<f/f8<0.31；
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 focal length of 3rd lens, f4 is the focal length of the 4th lens, and f5 is the focal length of the 5th lens, and f67 is the 6th lens and the 7th lens
Combined focal length, f8 be the 8th lens focal length.
On the other hand, the embodiment of the present invention additionally provides a kind of camera module.
Camera module, at least including optical lens, is provided with ultra wide-angle imaging optical system described above in optical lens
System.
The embodiment of the present invention, it is adaptable to which panorama VR cameras and 360 ° are without dead angle monitoring field, and its lens piece number is moderate, structure
Simply；Meanwhile, the premium properties with 240 ° of ultra-wide angle, more than 8,000,000 pixels.
Brief description of the drawings：
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is 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 imaging optical system of the present invention or the structural representation of camera module；
Fig. 2 is the imaging optical system of the present invention or the curvature of field, the distortion curve figure of camera module；
Fig. 3 is the imaging optical system of the present invention or the chromaticity difference diagram of camera module；
Fig. 4 is the imaging optical system of the present invention or the MTF curve figure of camera module；
Fig. 5 is the imaging optical system of the present invention or the relative illumination figure of camera module.
Embodiment：
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, 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, ultra wide-angle imaging optical system, 10 it is sequentially provided with from object plane to image planes along optical axis：First lens 1,
Second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7 and the 8th lens 8；Should
Each lens of optical system meet following condition：
(1)-0.2<f/f1<-0.09；
(2)-0.25<f/f2<-0.15；
(3)-0.3<f/f3<-0.19；
(4)0.17<f/f4<0.23；
(5)0.02<f/f5<0.07；
(6)0.11<f/f67<0.18；
(7)0.12<f/f8<0.31；
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 f67 is the 6th lens 6 and the
The combined focal length of seven lens 7, f8 is the focal length of the 8th lens 8.
The embodiment of the present invention, it is adaptable to which panorama VR cameras and 360 ° are without dead angle monitoring field, and its lens piece number is moderate, structure
Simply；Meanwhile, the premium properties with 240 ° of ultra-wide angle, more than 8,000,000 pixels.
Further, 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；Second lens 2
Object plane side be convex surface, image planes side be concave surface, its focal power is negative；The object plane side of 3rd lens 3 is convex surface, and image planes side is recessed
Face, its focal power is negative；The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and its focal power is just；5th lens 5
Object plane side is concave surface, and image planes side is convex surface, and its focal power is just；The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface,
Its focal power is just；The object plane side of 7th lens 7 is concave surface, and image planes side is convex surface, and its focal power is negative；The thing of 8th lens 8
Surface side is convex surface, and image planes side is convex surface, and its focal power is just.It is simple in construction, it is ensured that good optical property.
Yet further, the 6th lens 6 and the mutually glued formation compound lens of the 7th lens 7, the light focus of the compound lens
Spend for just.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd2 of the second lens 2, material Abbe constant Vd2 are met：Nd2 ＜ 1.57, Vd2
＞ 62.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd4 of the 4th lens 4, material Abbe constant Vd4 are met：Nd4 ＞ 1.92, Vd4
＜ 25.It is simple in construction, it is ensured that good optical property.
Yet further, the Refractive Index of Material Nd6 of the 6th lens 6, material Abbe constant Vd6 are met：Nd6 ＜ 1.66, Vd6
＞ 57.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd8 of the 8th lens 8, material Abbe constant Vd8 are met：Nd8 ＜ 1.60, Vd8
＞ 67.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd1 of the first lens 1, material Abbe constant Vd1 are met：Nd1 ＞ 1.75, Vd1 ＜
50.It is simple in construction, it is ensured that good optical property.
Yet further, the Refractive Index of Material Nd3 of the 3rd lens 3, material Abbe constant Vd3 are met：Nd3 ＜ 1.57, Vd3
＞ 62.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd5 of the 5th lens 5, material Abbe constant Vd5 are met：Nd5 ＜ 1.70, Vd5
＞ 53.It is simple in construction, it is ensured that good optical property.
Specifically, the lens 8 of the first lens 1 to the 8th are glass lens, and the 5th lens 5 and the 8th lens 6 are glass
Non-spherical lens.The optical property of optical lens can be effectively improved.
More specifically, aperture diaphragm 9 is located between the 5th lens 5 and the 6th lens 6.It is simple in construction, for adjusting light beam
Intensity.
Specifically, in the present embodiment, the focal length f of this optical system is 1.38mm, and stop index FNo. is 2.0, visual field
ω=240 ° of angle 2.Every basic parameter of this optical system is as shown in the table：
In upper table, along optical axis from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3, S4 are corresponded to
Two surfaces of the second lens 2；S5, S6 correspond to two surfaces of the 3rd lens 3；S7, S8 correspond to two of the 4th lens 4
Surface；S9, S10 correspond to two surfaces of the 5th lens 5；STO corresponds to the position where optical system aperture diaphragm 9；
S12, S13 correspond to two surfaces of the 6th lens 6；S13, S14 correspond to two surfaces of the 7th lens 7；S15, S16 correspondence
For two surfaces of the 8th lens 8；S17, S18 correspond to two tables of the optical filter being located between the 8th lens 8 and image planes 10
Face.
More specifically, the 5th lens 5 and the 8th lens 8 meet following aspherical equation formula：
In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate (its unit is identical with length of lens unit), and k is circle
Bore whose conic coefficient.When k-factor be less than -1 when, face type curve be hyperbola, during equal to -1 be parabola, between -1 to 0 it
Between when for ellipse, during equal to 0 for circle.a1To a8The coefficient corresponding to each radial coordinate is represented respectively, can be with by above parameter
The geomery of both-sided aspherical before and after accurate setting lens.
The aspherical correlation values of 5th lens 5 and the 8th lens 8 are as shown in the table：
| K | α1 | α2 | α3 | α4 | α5 | |
| S9 | -0.411 | 0 | 0.001269 | -8.084E-04 | 3.328E-04 | -1.914E-04 |
| S10 | -0.343 | 0 | 0.000187 | -2.385E-04 | -4.571E-05 | -1.500E-05 |
| S15 | -68.03 | 0 | -0.001034 | 1.064E-03 | -1.964E-04 | 2.550E-05 |
| S16 | -1.818 | 0 | 0.000616 | 4.045E-04 | 8.224E-06 | -2.743E-06 |
As can be seen that the optical system in the present embodiment has 240 ° of ultra-wide angle, more than 8,000,000 pixels in from Fig. 2 to Fig. 5
Premium properties.
A kind of camera module, at least including optical lens, is provided with ultra wide-angle imaging light described above in optical lens
System.
This camera module, it is adaptable to which panorama VR cameras and 360 ° are without dead angle monitoring field, and its lens piece number is moderate, structure letter
It is single；Meanwhile, the premium properties with 240 ° of ultra-wide angle, more than 8,000,000 pixels.
It is to combine one or more embodiments that particular content is provided as described above, does not assert the specific reality of the present invention
Apply and be confined to these explanations.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
Some technology deduction or replace are made, should all be considered as protection scope of the present invention.
Claims (10)
1. ultra wide-angle imaging optical system, is sequentially provided with along optical axis from object plane to image planes：It is first lens, the second lens, the 3rd saturating
Mirror, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens；Characterized in that, the optical system is each
Lens meet following condition：
(1)-0.2<f/f1<-0.09；
(2)-0.25<f/f2<-0.15；
(3)-0.3<f/f3<-0.19；
(4)0.17<f/f4<0.23；
(5)0.02<f/f5<0.07；
(6)0.11<f/f67<0.18；
(7)0.12<f/f8<0.31；
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 f67 is the group of the 6th lens and the 7th lens
Complex focus, f8 is the focal length of the 8th lens.
2. ultra wide-angle imaging optical system according to claim 1, it is characterised in that
The object plane side of first lens is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of second lens is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of 3rd lens is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 5th lens is concave surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 7th lens is concave surface, and image planes side is convex surface, and its focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and its focal power is just.
3. ultra wide-angle imaging optical system according to claim 1 or 2, it is characterised in that the 6th lens and the 7th lens
Mutually glued to form compound lens, the focal power of the compound lens is just.
4. ultra wide-angle imaging optical system according to claim 3, it is characterised in that the Refractive Index of Material of the second lens
Nd2, material Abbe constant Vd2 are met：Nd2 ＜ 1.57, Vd2 ＞ 62.
5. ultra wide-angle imaging optical system according to claim 3, it is characterised in that the Refractive Index of Material of the 4th lens
Nd4, material Abbe constant Vd4 are met：Nd4 ＞ 1.92, Vd4 ＜ 25.
6. ultra wide-angle imaging optical system according to claim 3, it is characterised in that the Refractive Index of Material of the 6th lens
Nd6, material Abbe constant Vd6 are met：Nd6 ＜ 1.66, Vd6 ＞ 57.
7. ultra wide-angle imaging optical system according to claim 3, it is characterised in that the Refractive Index of Material of the 8th lens
Nd8, material Abbe constant Vd8 are met：Nd8 ＜ 1.60, Vd8 ＞ 67.
8. ultra wide-angle imaging optical system according to claim 3, it is characterised in that the first lens to the 8th lens are
Glass lens.
9. ultra wide-angle imaging optical system according to claim 3, it is characterised in that the 5th lens and the 8th lens are glass
Glass non-spherical lens.
10. camera module, at least including optical lens, it is characterised in that any one of claim 1-9 is provided with optical lens
Described ultra wide-angle imaging optical system.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201168.2A CN107065137B (en) | 2017-03-30 | 2017-03-30 | Super wide angle optical system of making a video recording and module of making a video recording of using thereof |
| PCT/CN2017/116812 WO2018176924A1 (en) | 2017-03-30 | 2017-12-18 | Ultra-wide-angle camera optical system and camera module used thereby |
| JP2019516050A JP2019517685A (en) | 2017-03-30 | 2017-12-18 | Ultra-wide-angle imaging optical system and imaging module applying the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201168.2A CN107065137B (en) | 2017-03-30 | 2017-03-30 | Super wide angle optical system of making a video recording and module of making a video recording of using thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107065137A true CN107065137A (en) | 2017-08-18 |
| CN107065137B CN107065137B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710201168.2A Active CN107065137B (en) | 2017-03-30 | 2017-03-30 | Super wide angle optical system of making a video recording and module of making a video recording of using thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2019517685A (en) |
| CN (1) | CN107065137B (en) |
| WO (1) | WO2018176924A1 (en) |
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| CN109143534A (en) * | 2017-06-28 | 2019-01-04 | 佳能企业股份有限公司 | The electronic device of optical lens and the application optical lens |
| US10809497B2 (en) | 2017-06-23 | 2020-10-20 | Ability Enterprise Co., Ltd | Optical lens and electronic device using the same |
| US20210055528A1 (en) * | 2019-08-20 | 2021-02-25 | Jiangxi Lianchuang Electronic Co., Ltd. | Wide-angle lens, camera module and camera |
| WO2021031582A1 (en) * | 2019-08-20 | 2021-02-25 | 江西联创电子有限公司 | Wide-angle lens and imaging device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2019517685A (en) | 2019-06-24 |
| WO2018176924A1 (en) | 2018-10-04 |
| CN107065137B (en) | 2023-03-28 |
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