CN205679845U - A kind of vehicle-mounted high-definition fish eye lens - Google Patents
A kind of vehicle-mounted high-definition fish eye lens Download PDFInfo
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- CN205679845U CN205679845U CN201620625756.XU CN201620625756U CN205679845U CN 205679845 U CN205679845 U CN 205679845U CN 201620625756 U CN201620625756 U CN 201620625756U CN 205679845 U CN205679845 U CN 205679845U
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Abstract
The utility model discloses a kind of vehicle-mounted high-definition fish eye lens, it is sequentially provided with from thing side to image side: there is the front lens group of positive light coke, diaphragm, there is rear lens group and the imaging surface of positive light coke, described front lens group includes the first lens setting gradually from thing side to image side, second lens and the 3rd lens, the first described lens and the second power of lens are negative, the 3rd described power of lens is for just, described rear lens group includes the 4th lens setting gradually from thing side to image side, 5th lens and the 6th lens, the 4th described lens and the 6th power of lens are for just, the 5th described power of lens is negative, the 3rd described lens, 4th lens, 5th lens and the 6th lens are plastic aspheric lenes.The utility model angle of visual field is big, and high, the logical light ability of low cost, definition is strong.
Description
[technical field]
The utility model relates to a kind of vehicle-mounted high-definition fish eye lens.
[background technology]
Driving dispute, traffic accident etc. at present generally exists, and in order to ensure traffic safety, a lot of automobiles all install vehicle-mounted mirror additional
Head.But the field range of on-vehicle lens typically now is limited, definition is poor, and logical light quantity is more weak, thus present
On-vehicle lens can not satisfy social needs.
Therefore, the utility model is based on the shortcoming of above-mentioned prior art existence and proposes.
[utility model content]
The utility model purpose is to overcome the deficiencies in the prior art, provides a kind of angle of visual field big, low cost, definition
The strong vehicle-mounted high-definition fish eye lens of high, logical light ability.
The utility model is achieved through the following technical solutions:
A kind of vehicle-mounted high-definition fish eye lens, it is characterised in that: it is sequentially provided with from thing side to image side: before there is positive light coke
The 200th, lens group the 100th, diaphragm has rear lens group 300 and the imaging surface 400 of positive light coke, a described front lens group
100 include the first lens the 1st, the second lens 2 and the 3rd lens 3 setting gradually from thing side to image side, the first described lens 1 He
The focal power of the second lens 2 is negative, and the focal power of the 3rd described lens 3 is for just, and described rear lens group 300 includes from thing
The 4th lens that side to image side sets gradually the 4th, the 5th lens 5 and the 6th lens 6, the 4th described lens 4 and the 6th lens 6
Focal power is for just, and the focal power of the 5th described lens 5 is negative, described the 3rd lens the 3rd, the 4th lens the 4th, the 5th lens 5 and
6th lens 6 are plastic aspheric lenes.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: the first described lens 1 are meniscus shaped lens, and
And its towards the surface of thing side be convex surface, the surface towards image side be concave surface；Two surfaces of the second described lens 2 are recessed
Face；The 3rd described lens 3 towards the surface of thing side be concave surface, the surface towards image side be convex surface.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: two surfaces of the 4th described lens 4 are convex
Face；Two surfaces of the 5th described lens 5 are concave surface；Two surfaces of the 6th described lens 6 are convex surface.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: described front lens group 100 and rear lens group
300 meet following expression: 3.14≤Fbefore≤ 9.38,2.35≤Fbefore/ F≤7.8,3.5≤Fafter≤ 5.12,61≤
Fafter/ F≤4.25,0.62≤Fbefore/Fafter≤2.68；Wherein, FbeforeFor the focal length of front lens group 100, FafterFor rear
The focal length of lens group 300, F is the fish-eye total focal length of vehicle-mounted high-definition.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: the first described lens the 1st, the second lens 2 and the 3rd
Lens 3 meet following expression: 1.7≤Nd1≤ 1.9,56≤Vd1≤ 65,1.6≤Nd2≤ 1.8,50≤Vd2≤ 55,1.51≤
Nd3≤ 1.55,50≤Vd3≤57；Wherein, Nd1、Nd2、Nd3It is respectively the folding of the first lens the 1st, the second lens 2 and the 3rd lens 3
Penetrate rate, Vd1、Vd2、Vd3It is respectively the Abbe number of the first lens the 1st, the second lens 2 and the 3rd lens 3.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: described vehicle-mounted high-definition fish eye lens meets as follows
Expression formula: 0.72≤T2≤1.3,0.65≤T1/T2≤1.97,0.25≤(T1+T2+T3)/TTL≤0.44；Wherein, T1, T2,
T3 is respectively the center thickness of the first lens the 1st, the second lens 2 and the 3rd lens 3, and TTL is the fish-eye overall length of vehicle-mounted high-definition.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: described vehicle-mounted high-definition fish eye lens meets following
Formula: 2W >=210 °, 8.8≤TTL/F≤11.17；Wherein, 2W is the fish-eye angle of visual field of vehicle-mounted high-definition, and TTL is vehicle-mounted height
Clear fish-eye overall length, F is the fish-eye total focal length of vehicle-mounted high-definition.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: the first described lens 1 and the second lens 2 are glass
Glass spherical lens, is provided with optical filter 500 between the 6th described lens 6 and imaging surface 400.
Vehicle-mounted high-definition fish eye lens as above, it is characterised in that: described the 3rd lens the 3rd, the 4th lens the 4th, the 5th
The aspherical surface shape of lens 5 and the 6th lens 6 meets equation below:
In formula, parameter c is the curvature corresponding to radius, and y is that its unit of radial coordinate is identical with length of lens unit,
K is circular cone whose conic coefficient；When k-factor is less than-1, the face shape curve of lens is hyperbola, when k-factor is equal to-1, thoroughly
The face shape curve of mirror is parabola；When k-factor is between-1 to 0, the face shape curve of lens is ellipse, when k-factor is equal to 0
When, the face shape curve of lens is circle, and when k-factor is more than 0, the face shape curve of lens is oblateness；a1To a8Represent each respectively
Coefficient corresponding to radial coordinate.
Compared with prior art, the utility model has the following advantages:
1st, the utility model is sequentially provided with from thing side to image side and has front lens group, the diaphragm of positive light coke and just have
The rear lens group of focal power.This structure makes the utility model can become maximum field of view angle, and to reach the super large of 220 ° wide
The high definition camera lens of angle, big relative aperture and four mega pixels, also can guarantee that and still has within the temperature range of-40 DEG C～+85 DEG C
There is higher definition, be particularly well-suited to bad environments vehicle environment.
2nd, the utility model effectively can converge the wide angle of visual field into on-vehicle lens optical system, and reduces on-vehicle lens
The tolerance sensitivity of optical system, improves the optical property of camera lens.
3rd, the utility model effective correction system axial chromatic aberration is excessive, and can guarantee that the first lens have less bore, this
More helpful to camera lens miniaturization.
4th, the utility model effectively shortens camera lens overall length so that on-vehicle lens optical system has bigger aperture, F-number
Reach F2.0.
5th, optical filter of the present utility model can filter a part of light, to reduce veiling glare and hot spot etc., makes image color bright
There is while beautiful and sharp keen good color reducibility；3rd lens, the 4th lens, the 5th lens and the 6th lens are plastic cement
Non-spherical lens, thus realize that higher resolution ratio can mate 4,000,000 pixel photosensor, make of the present utility model sharp keen
Degree, color reducibility are significantly improved.
6th, the utility model angle of visual field is big, low cost, definition are high, logical light ability is strong, is suitable for popularization and application.
[brief description]
Fig. 1 is the utility model schematic diagram；
Fig. 2 is light path schematic diagram of the present utility model.
[detailed description of the invention]
Below in conjunction with the accompanying drawings the utility model is further described:
A kind of vehicle-mounted high-definition fish eye lens, is sequentially provided with from thing side to image side: have the front lens group of positive light coke
100th, the 200th, diaphragm has rear lens group 300 and an imaging surface 400 of positive light coke, described front lens group 100 include from
The first lens that thing side to image side sets gradually the 1st, the second lens 2 and the 3rd lens 3, the first described lens 1 and the second lens 2
Focal power be negative, the focal power of the 3rd described lens 3 is for just, and described rear lens group 300 includes from thing side to image side
The 4th lens setting gradually the 4th, the 5th lens 5 and the 6th lens 6, the focal power of the 4th described lens 4 and the 6th lens 6 is
Just, the focal power of the 5th described lens 5 is negative, described the 3rd lens the 3rd, the 4th lens the 4th, the 5th lens 5 and the 6th lens 6
It is plastic aspheric lenes.This structure makes the utility model can become maximum field of view angle, and to reach the super large of 220 ° wide
The high definition camera lens of angle, big relative aperture and four mega pixels, also can guarantee that and still has within the temperature range of-40 DEG C～+85 DEG C
There is higher definition, be particularly well-suited to bad environments vehicle environment.3rd lens the 3rd, the 4th lens the 4th, the 5th lens 5 and the 6th
Lens 6 are plastic aspheric lenes, on the one hand reduce number of lenses and quality, and reduce cost, on the other hand realize higher
Resolution ratio, can mate 4,000,000 pixel photosensor, makes sharpness of the present utility model, color reducibility significantly be carried
Rise.
Described first lens 1 are meniscus shaped lens, and it is convex surface, the surface towards image side towards the surface of thing side
For concave surface；Two surfaces of the second described lens 2 are concave surface；The 3rd described lens 3 towards the surface of thing side be concave surface,
Surface towards image side is convex surface.
Two surfaces of the 4th described lens 4 are convex surface；Two surfaces of the 5th described lens 5 are concave surface；
Two surfaces of the 6th described lens 6 are convex surface.
Described first lens 1 and the second lens 2 are glass spherical lens, the 6th described lens 6 and imaging surface 400 it
Between be provided with optical filter 500.Fish-eye first lens 1 use glass lens, can effectively protect camera lens in use to prevent
Only scratch, also can make the change impact of camera lens opposing adverse circumstances.Optical filter 500 can filter a part of light, to reduce veiling glare
With hot spot etc., image color is made while beautiful and sharp keen, to have good color reducibility.
Described front lens group 100 and rear lens group 300 meet following expression: 3.14≤Fbefore≤ 9.38,
2.35≤Fbefore/ F≤7.8,3.5≤Fafter≤ 5.12,61≤Fafter/ F≤4.25,0.62≤Fbefore/Fafter≤2.68；
Wherein, FbeforeFor the focal length of front lens group 100, FafterFor the focal length of rear lens group 300, F is vehicle-mounted high-definition fish eye lens
Total focal length.The wide angle of visual field can effectively be converged into FISH EYE LENS OPTICS system by the focal length distribution meeting above-mentioned expression formula,
And reduce the tolerance sensitivity of optical system, improve the relative luminance of optical system.
The first described lens the 1st, the second lens 2 and the 3rd lens 3 meet following expression: 1.7≤Nd1≤ 1.9,56≤
Vd1≤ 65,1.6≤Nd2≤ 1.8,50≤Vd2≤ 55,1.51≤Nd3≤ 1.55,50≤Vd3≤57；Wherein, Nd1、Nd2、Nd3Point
It is not the refractive index of the first lens the 1st, the second lens 2 and the 3rd lens 3, Vd1、Vd2、Vd3It is respectively the first lens the 1st, the second lens
2 and the 3rd Abbe number of lens 3.Refractive index and the Abbe number of the first lens the 1st, the second lens 2 and the 3rd lens 3 meet above-mentioned table
Reach formula, can effectively correct FISH EYE LENS OPTICS system axial aberration excessive, and can guarantee that the first lens 1 have less bore,
This is more helpful to camera lens miniaturization.
Described vehicle-mounted high-definition fish eye lens meets following expression: 0.72≤T2≤1.3,0.65≤T1/T2≤1.97,
0.25≤(T1+T2+T3)/TTL≤0.44；Wherein, T1, T2, T3 are respectively the first lens the 1st, the second lens 2 and the 3rd lens 3
Center thickness, TTL is the fish-eye overall length of vehicle-mounted high-definition.Therefore, it is possible to effectively shorten camera lens overall length so that on-vehicle lens
Optical system has bigger aperture, and F-number reaches F2.0.
Described vehicle-mounted high-definition fish eye lens meets following formula: 2W >=210 °, 8.8≤TTL/F≤11.17；Wherein, 2W
For the fish-eye angle of visual field of vehicle-mounted high-definition, TTL is the fish-eye overall length of vehicle-mounted high-definition, and F is that vehicle-mounted high-definition is fish-eye
Total focal length.Therefore, fish-eye optical property gets a promotion, and definition is high, and logical light ability is strong.
The aspherical surface shape of described the 3rd lens the 3rd, the 4th lens the 4th, the 5th lens 5 and the 6th lens 6 meets such as
Lower equation:
In formula, parameter c is the curvature corresponding to radius, and y is that its unit of radial coordinate is identical with length of lens unit,
K is circular cone whose conic coefficient；When k-factor is less than-1, the face shape curve of lens is hyperbola, when k-factor is equal to-1, thoroughly
The face shape curve of mirror is parabola；When k-factor is between-1 to 0, the face shape curve of lens is ellipse, when k-factor is equal to 0
When, the face shape curve of lens is circle, and when k-factor is more than 0, the face shape curve of lens is oblateness；a1To a8Represent each respectively
Coefficient corresponding to radial coordinate.
Claims (9)
1. a vehicle-mounted high-definition fish eye lens, it is characterised in that: it is sequentially provided with from thing side to image side: there is the front of positive light coke
Lens group group (100), diaphragm (200), the rear lens group (300) with positive light coke and imaging surface (400), described front lens
Group (100) includes the first lens (1), the second lens (2) and the 3rd lens (3) setting gradually from thing side to image side, described
The first lens (1) and the focal power of the second lens (2) be negative, the focal power of the 3rd described lens (3) for just, described after
Lens group (300) includes the 4th lens (4), the 5th lens (5) and the 6th lens (6) setting gradually from thing side to image side,
The focal power of the 4th described lens (4) and the 6th lens (6) is for just, and the focal power of the 5th described lens (5) is negative, described
The 3rd lens (3), the 4th lens (4), the 5th lens (5) and the 6th lens (6) be plastic aspheric lenes.
2. vehicle-mounted high-definition fish eye lens according to claim 1, it is characterised in that: described the first lens (1) are bent moon
Shape lens, and its towards the surface of thing side be convex surface, the surface towards image side be concave surface；The two of described the second lens (2)
Individual surface is concave surface；The 3rd described lens (3) towards the surface of thing side be concave surface, the surface towards image side be convex surface.
3. vehicle-mounted high-definition fish eye lens according to claim 2, it is characterised in that: two of the 4th described lens (4)
Surface is convex surface；Two surfaces of the 5th described lens (5) are concave surface；Two surfaces of the 6th described lens (6)
It is convex surface.
4. the vehicle-mounted high-definition fish eye lens according to claim 1 or 2 or 3, it is characterised in that: described front lens group
And rear lens group (300) meets following expression: 3.14≤F (100)before≤ 9.38,2.35≤Fbefore/ F≤7.8,3.5
≤Fafter≤ 5.12,61≤Fafter/ F≤4.25,0.62≤Fbefore/Fafter≤2.68；Wherein, FbeforeFor front lens group
(100) focal length, FafterFor the focal length of rear lens group (300), F is the fish-eye total focal length of vehicle-mounted high-definition.
5. vehicle-mounted high-definition fish eye lens according to claim 4, it is characterised in that: described the first lens (1), second are saturating
Mirror (2) and the 3rd lens (3) meet following expression: 1.7≤Nd1≤ 1.9,56≤Vd1≤ 65,1.6≤Nd2≤ 1.8,50≤
Vd2≤ 55,1.51≤Nd3≤ 1.55,50≤Vd3≤57；Wherein, Nd1、Nd2、Nd3It is respectively the first lens (1), the second lens
And the refractive index of the 3rd lens (3), Vd (2)1、Vd2、Vd3It is respectively the first lens (1), the second lens (2) and the 3rd lens (3)
Abbe number.
6. vehicle-mounted high-definition fish eye lens according to claim 5, it is characterised in that: described vehicle-mounted high-definition fish eye lens is full
Foot following expression: 0.72≤T2≤1.3,0.65≤T1/T2≤1.97,0.25≤(T1+T2+T3)/TTL≤0.44；Wherein,
T1, T2, T3 are respectively the center thickness of the first lens (1), the second lens (2) and the 3rd lens (3), and TTL is vehicle-mounted high-definition fish
The overall length of glasses head.
7. vehicle-mounted high-definition fish eye lens according to claim 6, it is characterised in that: described vehicle-mounted high-definition fish eye lens is full
Foot states formula: 2W >=210 °, 8.8≤TTL/F≤11.17；Wherein, 2W is the fish-eye angle of visual field of vehicle-mounted high-definition, and TTL is
The fish-eye overall length of vehicle-mounted high-definition, F is the fish-eye total focal length of vehicle-mounted high-definition.
8. vehicle-mounted high-definition fish eye lens according to claim 7, it is characterised in that: described the first lens (1) and second
Lens (2) are glass spherical lens, are provided with optical filter (500) between the 6th described lens (6) and imaging surface (400).
9. vehicle-mounted high-definition fish eye lens according to claim 1, it is characterised in that: described the 3rd lens (3), the 4th are saturating
The aspherical surface shape of mirror (4), the 5th lens (5) and the 6th lens (6) meets equation below:
In formula, parameter c is the curvature corresponding to radius, and y is that its unit of radial coordinate is identical with length of lens unit, and k is
Circular cone whose conic coefficient；When k-factor is less than-1, the face shape curve of lens is hyperbola, when k-factor is equal to-1, and lens
Face shape curve be parabola；When k-factor is between-1 to 0, the face shape curve of lens is ellipse, when k-factor is equal to 0
When, the face shape curve of lens is circle, and when k-factor is more than 0, the face shape curve of lens is oblateness；a1To a8Represent each respectively
Coefficient corresponding to radial coordinate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625756.XU CN205679845U (en) | 2016-06-21 | 2016-06-21 | A kind of vehicle-mounted high-definition fish eye lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625756.XU CN205679845U (en) | 2016-06-21 | 2016-06-21 | A kind of vehicle-mounted high-definition fish eye lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219608A (en) * | 2017-06-30 | 2017-09-29 | 中山市众盈光学有限公司 | A kind of vehicle-mounted fish eye lens of high definition |
| CN108345087A (en) * | 2017-01-25 | 2018-07-31 | 大立光电股份有限公司 | Optical image lens system, image capturing device and electronic device |
| CN109283661A (en) * | 2018-06-05 | 2019-01-29 | 浙江舜宇光学有限公司 | Imaging lens system group |
-
2016
- 2016-06-21 CN CN201620625756.XU patent/CN205679845U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345087A (en) * | 2017-01-25 | 2018-07-31 | 大立光电股份有限公司 | Optical image lens system, image capturing device and electronic device |
| CN108345087B (en) * | 2017-01-25 | 2019-10-11 | 大立光电股份有限公司 | Optical image lens system, image capturing device and electronic device |
| CN107219608A (en) * | 2017-06-30 | 2017-09-29 | 中山市众盈光学有限公司 | A kind of vehicle-mounted fish eye lens of high definition |
| CN107219608B (en) * | 2017-06-30 | 2023-05-30 | 中山市众盈光学有限公司 | High-definition vehicle-mounted fisheye lens |
| CN109283661A (en) * | 2018-06-05 | 2019-01-29 | 浙江舜宇光学有限公司 | Imaging lens system group |
| CN109283661B (en) * | 2018-06-05 | 2020-12-11 | 浙江舜宇光学有限公司 | Image pickup lens group |
| US11525980B2 (en) | 2018-06-05 | 2022-12-13 | Zhejiang Sunny Optical Co., Ltd. | Camera lens group |
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