CN206788444U - The automobile-used small-sized tight shot of ultra-wide angle - Google Patents
The automobile-used small-sized tight shot of ultra-wide angle Download PDFInfo
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- CN206788444U CN206788444U CN201720093248.6U CN201720093248U CN206788444U CN 206788444 U CN206788444 U CN 206788444U CN 201720093248 U CN201720093248 U CN 201720093248U CN 206788444 U CN206788444 U CN 206788444U
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- lens
- tight shot
- focal length
- automobile
- wide angle
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Abstract
The utility model belongs to field of optical device technology, more particularly to the automobile-used small-sized tight shot of ultra-wide angle, including the first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens being arranged in order from the object side to the image side, first lens are convex-concave negative power glass spherical lens, second lens are concavo-convex positive light coke plastic aspheric lens, 3rd lens are biconvex positive light coke plastic aspheric lens, 4th lens are concave-concave negative power plastic aspheric lens, and the 5th lens are biconvex positive light coke plastic aspheric lens.Relative to prior art, the utility model adds the structure of 4 plastic aspherical element eyeglasses using 1 glass spheric glass, give full play to the advantage that glass lens are easy to process, glass lens cost is low, possess ultrashort focal length 1.8mm, 160 degree of maximum field of view angle, compact, overall length are less than 14mm, it is cost-effective, good market prospect.
Description
Technical field
The utility model belongs to field of optical device technology, more particularly to a kind of small-sized tight shot of automobile-used ultra-wide angle.
Background technology
With social economy, science and technology develop rapidly, automobile-used video system become more popular with it is high-end.Chip is more
New to regenerate, the various aspects of performance of automobile-used camera lens includes the angle of visual field, clear aperature, pixel, image planes size etc. and also optimized, wherein super
Wide-angle tight shot is one of camera lens for accounting for demand significant proportion, is characterized in that focal length is short, and the angle of visual field is big, and the scope of monitoring is very
Extensively.
But the focal length of ultra-wide angle tight shot of the prior art is longer, cost is higher, the angle of visual field is smaller, volume ratio
Larger, cost performance can not meet the market demand.
In view of this, it is necessory to provide a kind of small-sized tight shot of automobile-used ultra-wide angle, it uses a piece of glass lens and 4
The optical texture of piece plastic lens, the low advantage of glass lens glass lens cost easy to process is given full play to, possesses ultrashort Jiao
It is less than 14mm, cost-effective, good market prospect away from 1.8mm, 160 degree of maximum field of view angle, compact, overall length.
Utility model content
The purpose of this utility model is：In view of the shortcomings of the prior art, provide that a kind of automobile-used ultra-wide angle is small-sized to be focused
Camera lens, it uses the optical texture of a piece of glass lens and 4 plastic lens, gives full play to glass lens plastic lens easy to process
The low advantage of piece cost, possesses ultrashort focal length 1.8mm, 160 degree of maximum field of view angle, compact, and overall length is less than 14mm, sexual valence
Than high, good market prospect.
In order to achieve the above object, the utility model adopts the following technical scheme that：
The automobile-used small-sized tight shot of ultra-wide angle, including be arranged in order from the object side to the image side the first lens, the second lens,
Three lens, the 4th lens and the 5th lens, first lens are convex-concave negative power glass spherical lens, second lens
For concavo-convex positive light coke plastic aspheric lens, the 3rd lens are biconvex positive light coke plastic aspheric lens, described
Four lens are concave-concave negative power plastic aspheric lens, and the 5th lens are biconvex positive light coke plastic aspheric lens；
First lens, second lens, the 3rd lens, Jiao of the 4th lens and the 5th lens
Ratio away from the focal length with whole camera lens meets following condition：
2.0 ＜ | f1/f | ＜ 3.0；
6.0 ＜ | f2/f | ＜ 9.0；
1.0 ＜ | f3/f | ＜ 2.0；
0.6 ＜ | f4/f | ＜ 1.2；
1.0 ＜ | f5/f | ＜ 2.0；
Wherein, f is the focal length of whole camera lens；F1 is the focal length of first lens, and f2 is the focal length of second lens,
F3 is the focal length of the 3rd lens；F4 is the focal length of the 4th lens；F5 is the focal length of the 5th lens.
One kind as the small-sized tight shot of the automobile-used ultra-wide angle of the utility model is improved, first lens and described second
Lens are directly bearing on, and second lens and the 3rd lens are by spacer ring close-fitting, the 3rd lens and the described 4th saturating
Mirror passes through soma close-fittings by soma close-fittings, the 4th lens with the 5th lens.
One kind as the small-sized tight shot of the automobile-used ultra-wide angle of the utility model is improved, the whole camera lens of tight shot
Focal length f meets following condition：1.8mm≤f≤3.0mm.
One kind as the small-sized tight shot of the automobile-used ultra-wide angle of the utility model is improved, the angle of visual field of the tight shot
FOV meets following condition：120°≤FOV≤180°.
One kind as the small-sized tight shot of the automobile-used ultra-wide angle of the utility model is improved, the aperture FNO of the tight shot
Meet following condition：FNO≥2.0.
One kind as the small-sized tight shot of the automobile-used ultra-wide angle of the utility model is improved, the optics overall length TTL of the camera lens
Meet following condition：13mm≤TTL≤20mm.
One kind as the small-sized tight shot of the automobile-used ultra-wide angle of the utility model is improved, second lens, the described 3rd
The aspherical lens of lens, the 4th lens and the 5th lens meet below equation：
Wherein：Z be it is aspherical along optical axis direction when being highly r position, away from aspheric vertex of surface apart from rise.C=
1/R, R represent the radius of curvature at face type center, and k represents circular cone coefficient, parameter a1、a2、a3、a4、a5、a6、a7、a8For high order aspheric
Face coefficient.
Relative to prior art, the utility model has the following advantages：
First, the second lens, the 3rd lens, the 4th lens and the 5th lens of the present utility model employ glass lens,
Accomplish low cost and high-performance, the cost of glass lens is far below glass spheric glass, so reduce cost；Again due to this
The second lens, the 3rd lens, the 4th lens and the 5th lens of utility model employ aspherical lens, compared to traditional ball
Face eyeglass improves performance.
Second, the utility model adds the structure of 4 plastic aspherical element eyeglasses using 1 glass spheric glass, gives full play to
The advantage that glass lens are easy to process, glass lens cost is low, possess ultrashort focal length 1.8mm, 160 degree of maximum field of view angle, body
Product is compact, and overall length is less than 14mm, cost-effective, good market prospect.
3rd, the utility model has two mega pixels under visible light, is combined and realized by reasonable employment glass plastic
Large aperture F2.0, image quality is good, and clearly bright monitored picture can be also realized under night low-light (level).This practicality simultaneously is new
Type possesses temperature compensation function, can reached under -30~+80 degree environment using Jiao is not run, suitable for row by reasonably optimizing
The equipment such as car record, motion photography, home security.
Brief description of the drawings
Fig. 1 is optical texture schematic diagram of the present utility model.
Embodiment
The utility model and its advantage are described in further detail below with reference to specific embodiment, still,
Specific embodiment of the present utility model is not limited thereto.
As shown in figure 1, the small-sized tight shot of automobile-used ultra-wide angle provided by the utility model, including from the object side to the image side successively
The first lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4 and the 5th lens 5 of arrangement, the first lens 1 are that convex-concave bears light
Focal power glass spherical lens, the second lens 2 are concavo-convex positive light coke plastic aspheric lens, and the 3rd lens 3 are the positive light focus of biconvex
Plastic aspheric lens are spent, the 4th lens 4 are concave-concave negative power plastic aspheric lens, and the 5th lens 5 are the positive light focus of biconvex
Spend plastic aspheric lens；
First lens 1, the second lens 2, the 3rd lens 3, focal length and the whole camera lens of the 4th lens 4 and the 5th lens 5
The ratio of focal length meets following condition：
2.0 ＜ | f1/f | ＜ 3.0；
6.0 ＜ | f2/f | ＜ 9.0；
1.0 ＜ | f3/f | ＜ 2.0；
0.6 ＜ | f4/f | ＜ 1.2；
1.0 ＜ | f5/f | ＜ 2.0；
Wherein, f is the focal length of whole camera lens；F1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, and f3 is
The focal length of three lens 3；F4 is the focal length of the 4th lens 4；F5 is the focal length of the 5th lens 5.Such can reaches miniaturization, height
The purpose of performance.
First lens 1 are directly bearing on the second lens 2, and the second lens 2 and the 3rd lens 3 are saturating by spacer ring close-fitting, the 3rd
The lens 4 of mirror 3 and the 4th pass through soma close-fittings by soma close-fittings, the 4th lens 4 and the 5th lens 5.
The focal length f of the whole camera lens of tight shot meets following condition：1.8mm≤f≤3.0mm.
The angle of visual field FOV of tight shot meets following condition：120°≤FOV≤180°.
The aperture FNO of tight shot meets following condition：FNO≥2.0.
The optics overall length TTL of camera lens meets following condition：13mm≤TTL≤20mm.
Second lens 2, the 3rd lens 3, the aspherical lens of the 4th lens 4 and the 5th lens 5 meet below equation：
Wherein：Z be it is aspherical along optical axis direction when being highly r position, away from aspheric vertex of surface apart from rise.C=
1/R, R represent the radius of curvature at face type center, and k represents circular cone coefficient, parameter a1、a2、a3、a4、a5、a6、a7、a8For high order aspheric
Face coefficient.
Embodiment 1
A kind of small-sized tight shot of automobile-used ultra-wide angle is present embodiments provided, including be arranged in order from the object side to the image side
One lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4 and the 5th lens 5, the first lens 1 are convex-concave negative power glass
Spherical lens, the second lens 2 are concavo-convex positive light coke plastic aspheric lens, and the 3rd lens 3 are that biconvex positive light coke plastics are non-
Spherical lens, the 4th lens 4 are concave-concave negative power plastic aspheric lens, and the 5th lens 5 are that biconvex positive light coke plastics are non-
Spherical lens.
First lens 1 are directly bearing on the second lens 2, and the second lens 2 and the 3rd lens 3 are saturating by spacer ring close-fitting, the 3rd
The lens 4 of mirror 3 and the 4th pass through soma close-fittings by soma close-fittings, the 4th lens 4 and the 5th lens 5.
In the present embodiment, the focal length f=1.8mm of tight shot, aperture FNO=2.4, FOV=170 ° of the angle of visual field, optics is total
Long TTL=13.5mm；The chip that pixel separation is 2.2 μm can be supported, edge relative illumination is 50%, the radius of curvature of each lens
R, center thickness d and refractive index nd refer to table 1：
Table 1：The physical parameter of each lens
| Face sequence number | Radius of curvature R (mm) | Center thickness d (mm) | Refractive index nd |
| 1 | 22.1 | 0.61 | 1.73 |
| 2 | 2.7 | 2 | |
| *3 | -3.3 | 2.6 | 1.64 |
| *4 | -3.2 | 1.62 | |
| * 5 (diaphragms) | 2.96 | 1.75 | 1.54 |
| *6 | -1.78 | 0.14 | |
| *7 | -2.12 | 0.38 | 1.61 |
| *8 | 1.89 | 0.2 | |
| *9 | 3.72 | 1.1 | 1.54 |
| *10 | -2.13 |
In table 1, face sequence number 1 and 2 corresponds to the face towards the face of object space and towards image space of the first lens 1 respectively；Face sequence number 3
With 4 faces towards the face of object space and towards image space for corresponding to the second lens 2 respectively；Face sequence number 5 and 6 corresponds to the 3rd lens 3 respectively
The face towards the face of object space and towards image space；Face sequence number 7 and 8 correspond to respectively the 4th lens 4 towards the face of object space and direction
The face of image space；Face sequence number 9 and 10 corresponds to the face towards the face of object space and towards image space of the 5th lens 5 respectively.
It is aspherical that the face of " * " is indicated in table 1, and aspherical lens meet equation below：
Wherein：Z be it is aspherical along optical axis direction when being highly r position, away from aspheric vertex of surface apart from rise.C=
1/R, R represent the radius of curvature at face type center, and k represents circular cone coefficient, parameter a1、a2、a3、a4、a5、a6、a7、a8For high order aspheric
Face coefficient.
Table 2：The aspherical parameter on the surface of the 3rd, 4,5,6,7,8,9 and 10.
In a word, the utility model has the following advantages：
First, the second lens 2, the 3rd lens 3, the 4th lens 4 and the 5th lens 5 of the present utility model employ plastic lens
Piece, accomplish low cost and high-performance, the cost of glass lens is far below glass spheric glass, so reduce cost；And by
Aspherical lens are employed in the second lens 2 of the present utility model, the 3rd lens 3, the 4th lens 4 and the 5th lens 5, are compared
Traditional spheric glass improves performance.
Second, the utility model adds the structure of 4 plastic aspherical element eyeglasses using 1 glass spheric glass, gives full play to
The advantage that glass lens are easy to process, glass lens cost is low, possess ultrashort focal length 1.8mm, 160 degree of maximum field of view angle, body
Product is compact, and overall length is less than 14mm, cost-effective, good market prospect.
3rd, the utility model has two mega pixels under visible light, is combined and realized by reasonable employment glass plastic
Large aperture F2.0, image quality is good, and clearly bright monitored picture can be also realized under night low-light (level).This practicality simultaneously is new
Type possesses temperature compensation function, can reached under -30~+80 degree environment using Jiao is not run, suitable for row by reasonably optimizing
The equipment such as car record, motion photography, home security.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned realities
The mode of applying carries out appropriate change and modification.Therefore, the utility model is not limited to specific implementation disclosed and described above
Mode, some modifications and changes of the present utility model should also be as falling into scope of the claims of the present utility model.
In addition, although used some specific terms in this specification, but these terms are merely for convenience of description, not to this reality
With new composition any restrictions.
Claims (7)
1. the automobile-used small-sized tight shot of ultra-wide angle, it is characterised in that：Including be arranged in order from the object side to the image side the first lens,
Two lens, the 3rd lens, the 4th lens and the 5th lens, first lens are convex-concave negative power glass spherical lens, institute
It is concavo-convex positive light coke plastic aspheric lens to state the second lens, and the 3rd lens are that biconvex positive light coke plastic aspherical element is saturating
Mirror, the 4th lens are concave-concave negative power plastic aspheric lens, and the 5th lens are that biconvex positive light coke plastics are non-
Spherical lens；
First lens, second lens, the 3rd lens, the 4th lens and the 5th lens focal length with
The ratio of the focal length of whole camera lens meets following condition：
2.0 ＜ | f1/f | ＜ 3.0；
6.0 ＜ | f2/f | ＜ 9.0；
1.0 ＜ | f3/f | ＜ 2.0；
0.6 ＜ | f4/f | ＜ 1.2；
1.0 ＜ | f5/f | ＜ 2.0；
Wherein, f is the focal length of whole camera lens；F1 is the focal length of first lens, and f2 is the focal length of second lens, and f3 is
The focal length of 3rd lens；F4 is the focal length of the 4th lens；F5 is the focal length of the 5th lens.
2. the small-sized tight shot of automobile-used ultra-wide angle according to claim 1, it is characterised in that：First lens with it is described
Second lens are directly bearing on, and second lens and the 3rd lens are by spacer ring close-fitting, the 3rd lens and described the
Four lens close-fittings, the 4th lens and the 5th lens close-fitting.
3. the small-sized tight shot of automobile-used ultra-wide angle according to claim 1, it is characterised in that：The whole mirror of tight shot
The focal length f of head meets following condition：1.8mm≤f≤3.0mm.
4. the small-sized tight shot of automobile-used ultra-wide angle according to claim 1, it is characterised in that：The visual field of the tight shot
Angle FOV meets following condition：120°≤FOV≤180°.
5. the small-sized tight shot of automobile-used ultra-wide angle according to claim 1, it is characterised in that：The aperture of the tight shot
FNO meets following condition：FNO≥2.0.
6. the small-sized tight shot of automobile-used ultra-wide angle according to claim 1, it is characterised in that：The optics overall length of the camera lens
TTL meets following condition：13mm≤TTL≤20mm.
7. the small-sized tight shot of automobile-used ultra-wide angle according to claim 1, it is characterised in that：It is second lens, described
The aspherical lens of 3rd lens, the 4th lens and the 5th lens meet below equation：
Wherein：Z be it is aspherical along optical axis direction when being highly r position, away from aspheric vertex of surface apart from rise, C=1/R, R
The radius of curvature at expression face type center, k represent circular cone coefficient, parameter a1、a2、a3、a4、a5、a6、a7、a8For high order aspheric surface system
Number.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720093248.6U CN206788444U (en) | 2017-01-22 | 2017-01-22 | The automobile-used small-sized tight shot of ultra-wide angle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720093248.6U CN206788444U (en) | 2017-01-22 | 2017-01-22 | The automobile-used small-sized tight shot of ultra-wide angle |
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| Publication Number | Publication Date |
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| CN206788444U true CN206788444U (en) | 2017-12-22 |
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| CN201720093248.6U Active CN206788444U (en) | 2017-01-22 | 2017-01-22 | The automobile-used small-sized tight shot of ultra-wide angle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646830A (en) * | 2017-01-22 | 2017-05-10 | 东莞市宇瞳光学科技股份有限公司 | Automobile super-wide-angle small prime lens |
| CN110031955A (en) * | 2018-01-12 | 2019-07-19 | 柯尼卡美能达株式会社 | Imaging optical system and photographic device |
-
2017
- 2017-01-22 CN CN201720093248.6U patent/CN206788444U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646830A (en) * | 2017-01-22 | 2017-05-10 | 东莞市宇瞳光学科技股份有限公司 | Automobile super-wide-angle small prime lens |
| CN110031955A (en) * | 2018-01-12 | 2019-07-19 | 柯尼卡美能达株式会社 | Imaging optical system and photographic device |
| CN110031955B (en) * | 2018-01-12 | 2021-07-06 | 柯尼卡美能达株式会社 | Imaging optical system and imaging device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Pinguang Inventor after: Liu Guanlu Inventor after: He Jianwei Inventor after: Mao Caiying Inventor before: Liu Guanlu |