CN208421383U - The high pixel fish eye optical systems of ultra-wide angle and its camera module of application - Google Patents
The high pixel fish eye optical systems of ultra-wide angle and its camera module of application Download PDFInfo
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- CN208421383U CN208421383U CN201821020181.4U CN201821020181U CN208421383U CN 208421383 U CN208421383 U CN 208421383U CN 201821020181 U CN201821020181 U CN 201821020181U CN 208421383 U CN208421383 U CN 208421383U
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Abstract
The utility model embodiment discloses a kind of high pixel fish eye optical systems of ultra-wide angle, as shown in Figure 1, successively including: the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens from object plane to image planes along optical axis.On the other hand, the utility model embodiment additionally provides a kind of camera module.The utility model embodiment is mainly made of 8 pieces of lens, and lens piece number is few, and structure is simple；Using the intercombination of different lens and reasonable distribution focal power, there are the favorable optical performances such as 200 ° of ultra-wide angle, 20,000,000 or more high pixel, be suitable for professional panorama VR camera and micro- one camera.
Description
Technical field:
The utility model relates to a kind of optical system and its camera module of application, especially a kind of high pixel fish of ultra-wide angle
Optics of the eye system and its camera module of application.
Background technique:
It is existing to be applied to professional panorama VR camera and optical system or camera module in micro- one camera, generally existing mirror
The problem of piece quantity is more, and structure is complicated.
Summary of the invention:
To overcome the existing optical system applied in professional panorama VR camera and micro- one camera or camera module to exist
The problem of number of lenses is more, and structure is complicated, the utility model embodiment provide a kind of high pixel fish eye optical systems of ultra-wide angle.
A kind of high pixel fish eye optical systems of ultra-wide angle, successively include: the first lens, second from object plane to image planes along optical axis
Lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th 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 concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 7th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and focal power is positive.
On the other hand, the utility model embodiment additionally provides a kind of camera module.
A kind of camera module includes at least optical lens, is equipped with the high pixel of ultra-wide angle described above in optical lens
Fish eye optical systems.
The optical system and camera module of the utility model embodiment are mainly made of 8 pieces of lens, and lens piece number is few, knot
Structure is simple；Using the intercombination of different lens and reasonable distribution focal power, there is 200 ° of ultra-wide angle, 20,000,000 or more high pixel etc.
Favorable optical performance is suitable for professional panorama VR camera and micro- one camera.
Detailed description of the invention:
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the optical system of the utility model or the structural schematic diagram of camera module；
Fig. 2 is the optical system of the utility model or the field curvature, distortion curve figure of camera module；
Fig. 3 is the optical system of the utility model or the chromaticity difference diagram of camera module；
Fig. 4 is the optical system of the utility model or the MTF curve figure of camera module；
Fig. 5 is the optical system of the utility model or the relative illumination figure of camera module.
Specific embodiment:
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
When the utility model embodiment refers to the ordinal numbers such as " first ", " second ", unless based on context its certain table
Up to 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 " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
The utility model embodiment provides a kind of high pixel fish eye optical systems of ultra-wide angle, as shown in Figure 1, along optical axis from
Object plane successively includes: the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens to image planes
6, the 7th lens 7 and the 8th lens 8.
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 concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens 4 is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 5th lens 5 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 7th lens 7 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 8th lens 8 is convex surface, and image planes side is convex surface, and focal power is positive.
The optical system of the utility model embodiment is mainly made of 8 pieces of lens, and lens piece number is few, and structure is simple；Using
Different lens are combined with each other and reasonable distribution focal power, have the good opticals such as 200 ° of ultra-wide angle, 20,000,000 or more high pixel
Can, it is suitable for professional panorama VR camera and micro- one camera.
Further, non-limiting, the 6th lens 6 and the mutual glue of the 7th lens 7 as the preferred embodiment of this programme
Conjunction forms compound lens, and the focal power of compound lens is negative.Structure is simple, using the intercombination of different lens and reasonable distribution light
Focal power has the favorable optical performances such as 200 ° of ultra-wide angle, 20,000,000 or more high pixel.
Still further, as this programme preferred embodiment and non-limiting, the group of the 6th lens 6 and the 7th lens 7
Meet following condition: -7.25 < f67/f < -6.17 between complex focus f67 and the focal length f of entire optical system.Structure is simple, adopts
With the intercombination of different lens and reasonable distribution focal power, there are the good opticals such as 200 ° of ultra-wide angle, 20,000,000 or more high pixel
Performance.
Further, non-limiting as the specific embodiment of this programme, the Refractive Index of Material Nd6 of the 6th lens 6,
Material Abbe constant Vd6 meets: Nd6 < 1.60, Vd6 > 68；Structure is simple, it is ensured that good optical property.
Further, non-limiting as the specific embodiment of this programme, the Refractive Index of Material Nd7 of the 7th lens 7,
Material Abbe constant Vd7 meets: Nd7 > 1.92, Vd7 < 21.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the specific embodiment of this programme, each lens of optical system meet as follows
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 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, 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 are the focal length of the 8th lens 8.Structure is simple, using the intercombination of different lens and reasonable distribution
Focal power has the favorable optical performances such as 200 ° of ultra-wide angle, 20,000,000 or more high pixel.
Further, non-limiting, Refractive Index of Material Nd1, the material of the first lens 1 as the specific embodiment of this programme
Expect that Abbe constant Vd1 meets: Nd1 > 1.75, Vd1 < 50；The focal length f1 of first lens 1 meets: -6.72 < f1/f < -6.12, f
For the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Still further, as the specific embodiment of this programme and it is non-limiting, the Refractive Index of Material Nd2 of the second lens 2,
Material Abbe constant Vd2 meets: Nd2 < 1.60, Vd2 > 60；The focal length f2 of second lens 2 meets: -3.84 < f2/f < -3.25,
F is the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the specific embodiment of this programme, the Refractive Index of Material Nd3 of the third lens 3,
Material Abbe constant Vd3 meets: Nd3 > 1.75, Vd3 < 50；The focal length f3 of the third lens 3 meets: -55.2 < f3/f < -40.3,
F is the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the specific embodiment of this programme, the Refractive Index of Material Nd4 of the 4th lens 4,
Material Abbe constant Vd4 meets: Nd4 > 1.88, Vd4 < 40；The focal length f4 of 4th lens 4 meets: 5.10 < f4/f < 5.83, f
For the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting, Refractive Index of Material Nd5, the material of the 5th lens 5 as the specific embodiment of this programme
Expect that Abbe constant Vd5 meets: Nd5 < 1.60, Vd5 > 67；The focal length f5 of 5th lens 5 meets: 4.33 < f5/f < 5.12, f are
The focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Again still further, as this programme specific embodiment and non-limiting, the Refractive Index of Material of the 8th lens 8
Nd8, material Abbe constant Vd8 meet: Nd8 < 1.78, Vd8 > 49；The focal length f8 of 8th lens 8 meets: 2.31 < f8/f <
3.15, f be the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Still further, non-limiting as the specific embodiment of this programme, the aperture diaphragm of optical system is located at the
Between five lens 5 and the 6th lens 6, close to 6 side of the 6th lens.For adjusting the intensity of light beam.
Further, non-limiting, the first lens 1 to the 8th of optical system as the specific embodiment of this programme
Lens 8 are made of glass material, and the parsing power of optical lens can be improved.
Specifically, in conjunction with Fig. 1, in the present embodiment, lens focus f=5.94mm, stop index F/NO=2.8, visual field
2 ω=200 ° of angle, sensor:4/3 feet of chip, 20,000,000 pixels.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 third 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 is diaphragm position；S12, S13 correspond to the 6th lens 6
Two surfaces；S13, S14 correspond to two surfaces of the 7th lens 7；S15, S16 correspond to two surfaces of the 8th lens 8；
S17, S18 correspond to two surfaces of the optical filter between the 8th lens 8 and image planes 10.
More specifically, the 5th lens 5 and the 8th lens 8 are Glass aspheric eyeglass, meet following equation:Wherein,
Parameter c=1/R, as curvature corresponding to radius, y are radial coordinate, and unit is identical with length of lens unit, and k is circular cone
Whose conic coefficient, a1To a5Coefficient corresponding to respectively each radial coordinate.The surface S9 of 5th lens 5 and S10 table
The aspherical correlation values in face, the surface S15 of the 8th lens 8 and the surface S16 are as shown in the table:
As can be seen that the optical system in the present embodiment has 200 ° of ultra-wide angle, 20,000,000 or more high in from Fig. 2 to Fig. 5
The favorable optical performances such as pixel.
A kind of camera module includes at least optical lens, is equipped with the high pixel of ultra-wide angle described above in optical lens
Fish eye optical systems.
The camera module of the utility model embodiment is mainly made of 8 pieces of lens, and lens piece number is few, and structure is simple；Using
Different lens are combined with each other and reasonable distribution focal power, have the good opticals such as 200 ° of ultra-wide angle, 20,000,000 or more high pixel
Can, it is suitable for professional panorama VR camera and micro- one camera.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert the tool of the utility model
Body implementation is only limited to these instructions.It is all approximate with the method for the utility model, structure etc., identical or practical new for this
Several technology deduction or replace are made under type concept thereof, all should be considered as the protection scope of the utility model.
Claims (10)
1. a kind of high pixel fish eye optical systems of ultra-wide angle, along optical axis successively include: from object plane to image planes the first lens, second thoroughly
Mirror, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th 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 concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 7th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and focal power is positive.
2. the high pixel fish eye optical systems of ultra-wide angle as described in claim 1, which is characterized in that the 6th lens and the 7th lens
Mutually glued to form compound lens, the focal power of compound lens is negative.
3. the high pixel fish eye optical systems of ultra-wide angle as claimed in claim 2, which is characterized in that the 6th lens and the 7th lens
Combined focal length f67 and entire optical system focal length f between meet following condition: -7.25 < f67/f < -6.17.
4. the high pixel fish eye optical systems of ultra-wide angle as claimed in claim 1 or 2, which is characterized in that optical system it is each
Mirror meets 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 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, 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 are the focal length of the 8th lens.
5. the high pixel fish eye optical systems of ultra-wide angle as claimed in claim 1 or 2, which is characterized in that the material of the first lens
Refractive index Nd1, material Abbe constant Vd1 meet: Nd1 > 1.75, Vd1 < 50；The focal length f1 of first lens meets: -6.72 <
F1/f < -6.12, f is the focal length of entire optical system.
6. the high pixel fish eye optical systems of ultra-wide angle as claimed in claim 1 or 2, which is characterized in that the material of the second lens
Refractive index Nd2, material Abbe constant Vd2 meet: Nd2 < 1.60, Vd2 > 60；The focal length f2 of second lens meets: -3.84 <
F2/f < -3.25, f is the focal length of entire optical system.
7. the high pixel fish eye optical systems of ultra-wide angle as claimed in claim 1 or 2, which is characterized in that the material of the third lens
Refractive index Nd3, material Abbe constant Vd3 meet: Nd3 > 1.75, Vd3 < 50；The focal length f3 of the third lens meets: -55.2 <
F3/f < -40.3, f is the focal length of entire optical system.
8. the high pixel fish eye optical systems of ultra-wide angle as claimed in claim 1 or 2, which is characterized in that the material of the 4th lens
Refractive index Nd4, material Abbe constant Vd4 meet: Nd4 > 1.88, Vd4 < 40；The focal length f4 of 4th lens meets: 5.10 < f4/
F < 5.83, f are the focal length of entire optical system.
9. the high pixel fish eye optical systems of ultra-wide angle as claimed in claim 1 or 2, which is characterized in that the material of the 5th lens
Refractive index Nd5, material Abbe constant Vd5 meet: Nd5 < 1.60, Vd5 > 67；The focal length f5 of 5th lens meets: 4.33 < f5/
F < 5.12, f are the focal length of entire optical system.
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
The high pixel fish eye optical systems of ultra-wide angle described in one.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285878A (en) * | 2019-07-23 | 2021-01-29 | 江西凤凰光学科技有限公司 | Low distortion fisheye lens |
| CN114675406A (en) * | 2022-05-27 | 2022-06-28 | 江西联创电子有限公司 | Optical lens |
-
2018
- 2018-06-29 CN CN201821020181.4U patent/CN208421383U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285878A (en) * | 2019-07-23 | 2021-01-29 | 江西凤凰光学科技有限公司 | Low distortion fisheye lens |
| CN114675406A (en) * | 2022-05-27 | 2022-06-28 | 江西联创电子有限公司 | Optical lens |
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