CN204883029U - Wide angle high definition rearview mirror head - Google Patents
Wide angle high definition rearview mirror head Download PDFInfo
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- CN204883029U CN204883029U CN201520440215.5U CN201520440215U CN204883029U CN 204883029 U CN204883029 U CN 204883029U CN 201520440215 U CN201520440215 U CN 201520440215U CN 204883029 U CN204883029 U CN 204883029U
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Abstract
The utility model discloses a wide angle high definition rearview mirror head, include and begin to be equipped with in proper order from the object space: have negative optical power front lens group, diaphragm, positive refractive power's back lens group and light filter have, front lens group includes two first, second lens and third lens that have positive refractive power that have negative optical power from the object space side in proper order, back lens group includes in proper order from the object space side that the fourth lens, of a biconvex are concave to the 5th lens of plano -concave of object space and the VI lenses of a biconvex, fourth lens and the 5th lens are formed and are glued together the lens, second lens and VI lenses are the aspherical mirror piece, camera lens optical length L satisfies following condition: 10< L< 14. The utility model discloses a wide angle high definition rearview mirror head can realize super large wide angle and large relative aperture, and the camera lens volume is littleer, and length is shorter, has high pass light energy power and fine definition, optimize second lens and VI lenses's shape, greatly reduced aspherical lens's the manufacturing degree of difficulty.
Description
Technical field
The utility model relates to optical device field, specifically refers to a kind of for in-vehicle camera system, and can be used to carry out panorama and park and the wide-angle high definition reversing camera lens of overall view monitoring.
Background technology
Optical lens is requisite parts in Vision Builder for Automated Inspection, directly affects the quality of image quality, affects realization and the effect of algorithm.Optical lens can be divided into short-focus lens, middle zoom lens from focal length, telephoto lens; Divide from visual field size and have wide-angle, standard, long shot; Structure is divided and has fixed aperture tight shot, manual iris tight shot, automatic diaphragm fixed focus lens, manual zoom camera lens, automatic zoom camera lens, auto iris motorized zoom lens, electronic Tri-Chargable lens etc.
Current, along with the continuous fast development of China's economy, private car quantity is increased sharply, and present buying car, taking driving test becomes universal phenomenon, and Getting Started causes the existence of many potential collision hazards.Generally be applied to the pick-up lens of the aspects such as automobile, imaging monitoring and electronic amusement device, because considering the image characteristics needing single to capture extensive area, the field angle needed for its camera lens is larger.Automobile is equipped with the universal of reverse image device in recent years, the Wide viewing angle camera lens being equipped with high-res has become a kind of trend, therefore be badly in need of one and have Wide-angle and high image quality, the camera lens and the wide viewing angle high definition being unlikely to make camera lens total length long is moveed backward.But traditional current length of ultra-wide angle on-vehicle lens is longer, field of view angle is large not, can not meet the demand of the vehicle-mounted product miniaturization of existing market.
Utility model content
The purpose of this utility model overcomes weak point of the prior art, provide one can in parking warehouse-in process overall view monitoring, shorten lens length and meet the trend of vehicle-mounted product miniaturization wide-angle high definition reversing camera lens.
The purpose of this utility model is achieved through the following technical solutions:
A kind of wide-angle high definition reversing camera lens, comprise and being provided with successively from object space: the front lens group with negative power, diaphragm, there is rear lens group and the optical filter of positive light coke, described front lens group comprise from object space side that two have negative power successively first, second lens and one have the 3rd lens of positive light coke, rear lens group comprises the 4th lens of a biconvex successively from object space side, 6th lens of the recessed plano-concave to object space the 5th lens and a biconvex, 4th lens become cemented doublet with the 5th lens combination, described second lens and the 6th lens are aspherical lens, described lens optical overall length L meets the following conditions: 10<L<14.
Concrete, meet the following conditions between described camera lens image planes size and lens optical overall length: H/L>0.15, wherein H is camera lens image planes sizes, and L is lens optical overall length.
Concrete, described camera lens meets following formula: BFL/EFL<1.7, D.FOV>216 °, and wherein BFL is lens optical back focal length, and EFL is the total focal length of camera lens, and D.FOV is the diagonal field of view angle of described camera lens.
Concrete, the convex surface of described first lens be coated with waterproof anti-scratch optical film and convex surface facing the falcate sphere negative lens of object plane.
The utility model has the following advantages and beneficial effect compared to existing technology:
1, relative on-vehicle lens optics overall length is on the market mostly at more than 15mm, wide-angle high definition reversing camera lens of the present utility model can realize ultra wide-angle and object lens of large relative aperture, camera lens volume is less, length is shorter, optics overall length is only 13.01mm, there is high pass luminous energy power and high definition, be applicable to panorama and park and wide-angle vehicle-mounted monitoring aspect; Camera lens rear end adds optical filter (IR-CUT), filters infrared band to the interference of imaging, effectively improves the image quality of camera lens.
2, optimize the shape of the second lens and the 6th lens, greatly reduce the processing and manufacturing difficulty of non-spherical lens.
3, the eyeglass composition that six physico-chemical properties are stable is adopted, working temperature is stable can reach automobile industry standard TS16949 requirement, meet-40 ° ~+85 ° normally work, effectively widened the working temperature of camera lens, improved the stability of on-vehicle lens cope with bad environmental work.
4, wide-angle high definition of the present utility model reversing camera lens material therefor is glass factory and recommends glass, and the relative price of material is cheap, effectively reduces cost, this camera lens high definition mega pixel and ultra-wide angle, and total field angle can reach 216 °.
5, the first lens front surface adopts the design of plated film waterproof anti-scratch; Structurally consider the waterproofing design of camera lens, it is inner that anti-sealing, mist infiltrate camera lens, can meet and normally work in severe rain, greasy weather gas.
Accompanying drawing explanation
Fig. 1 is the lens combination figure of wide-angle high definition of the present utility model reversing camera lens.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of wide-angle high definition reversing camera lens, comprise and being provided with successively from object space: the front lens group with negative power, diaphragm 7, there is rear lens group and the optical filter 8 of positive light coke, described front lens group comprises the first lens 1 that two have negative power successively from object space side, second lens 2 and one have the 3rd lens 3 of positive light coke, rear lens group comprises the 4th lens 4 of a biconvex successively from object space side, 6th lens 6 of the recessed plano-concave to object space the 5th lens 5 and a biconvex, 4th lens 4 and the 5th lens 5 form cemented doublet, described second lens 2 and the 6th lens 6 are aspherical lens, described lens optical overall length L meets the following conditions: 10<L<14.
On-vehicle lens optics overall length is mostly at more than 15mm relatively on the market, wide-angle high definition reversing camera lens of the present utility model can realize ultra wide-angle and object lens of large relative aperture, camera lens volume is less, length is shorter, optics overall length is only 13.01mm, there is high pass luminous energy power and high definition, be applicable to panorama and park and wide-angle vehicle-mounted monitoring aspect; Camera lens rear end adds optical filter (IR-CUT), filters infrared band to the interference of imaging, effectively improves the image quality of camera lens.
In the present embodiment, the gummed design of the 4th lens and the 5th lens effectively can change the aberration of optical system, and effectively control the generation of senior aberration, thus improve logical luminous energy power and the resolving power of this optical system, and, 5th eyeglass is optimized for the planoconcave lens of negative power, is convenient to manufacture produce.
Meet the following conditions between described camera lens image planes size and lens optical overall length: H/L>0.15, wherein H is camera lens image planes sizes, and L is lens optical overall length.
Described camera lens meets following formula: BFL/EFL<1.7, D.FOV>216 °, and wherein BFL is lens optical back focal length, and EFL is the total focal length of camera lens, and D.FOV is the diagonal field of view angle of described camera lens.Total field angle of camera lens reaches 216 °, can realize parking without the panorama at dead angle and monitoring.
In order to make wide-angle high definition reversing camera lens have preferably optical characteristics, its parameters can be designed as and meets following all or part of condition, and these conditions are:
Meet the following conditions between described front lens group and rear lens group :-6<f1/f2<-2, wherein, f1 is front lens group focal length, and f2 is rear lens group focal length.
Described front lens group meets the following conditions :-15<f1<-5 ,-6<f1/f0<-18, and wherein f0 is the effective focal length of described camera lens, and f1 is front lens group focal length.
Described rear lens group meets the following conditions: 1<f2<2.5,1.5<f2/f0<4.5, and wherein f0 is the effective focal length of described camera lens, and f2 is rear lens group focal length.
After described lens optical, burnt BFL and camera lens effective focal length f0 meets the following conditions: BFL/f0<2.8.
Described 4th lens meet relational expression: Nd>1.75, Vd>45, and wherein Nd is refractive index, and Vd is Abbe constant.
5th lens meet relational expression: Nd>1.85, Vd<25, and wherein Nd is refractive index, and Vd is Abbe constant.
In the present embodiment, the convex surface of described first lens be coated with waterproof anti-scratch optical film and convex surface facing the falcate sphere negative lens of object plane.Owing to structurally considering the waterproofing design of camera lens, it is inner that anti-sealing, mist infiltrate camera lens, can meet and normally work in severe rain, greasy weather gas.
Such as, in concrete enforcement, preferably configuration is as shown in table 1 for of bugeye lens of the present invention:
Front surface described in table 1 refers to the surface of lens near object space, and the rear surface described in table 1 refers to the surface of lens near image space, when the radius on the first to the 6th lens in table 1, diaphragm and infrared fileter surface is ∞, represents that this surface is plane;
Table 1
Beating * surface in upper table is aspheric surface, and its correlation parameter is as table 2, and wherein K, A, B, C, D, E are asphericity coefficient:
Further, described first lens meet relational expression:
Nd>1.7, Vd>47, wherein Nd is refractive index, and Vd is Abbe constant.
Concrete, described second lens are aspheric surface plastic lens, and meet relational expression:
Second piece of lens Nd>1.5, Vd>50, wherein Nd is refractive index, and Vd is Abbe constant.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. a wide-angle high definition reversing camera lens, it is characterized in that, comprise and being provided with successively from object space: the front lens group with negative power, diaphragm, there is rear lens group and the optical filter of positive light coke, described front lens group comprise from object space side that two have negative power successively first, second lens and one have the 3rd lens of positive light coke, rear lens group comprises the 4th lens of a biconvex successively from object space side, 6th lens of the recessed plano-concave to object space the 5th lens and a biconvex, 4th lens become cemented doublet with the 5th lens combination, described second lens and the 6th lens are aspherical lens, described lens optical overall length L meets the following conditions: 10<L<14.
2. wide-angle high definition reversing camera lens according to claim 1, it is characterized in that: meet the following conditions between described camera lens image planes size and lens optical overall length: H/L>0.15, wherein H is camera lens image planes sizes, and L is lens optical overall length.
3. wide-angle high definition reversing camera lens according to claim 1, it is characterized in that: described camera lens meets following formula: BFL/EFL<1.7, D.FOV>216 °, wherein BFL is lens optical back focal length, EFL is the total focal length of camera lens, and D.FOV is the diagonal field of view angle of described camera lens.
4. wide-angle high definition reversing camera lens according to claim 1, it is characterized in that: meet the following conditions between described front lens group and rear lens group :-6<f1/f2<-2, wherein, f1 is front lens group focal length, and f2 is rear lens group focal length.
5. wide-angle high definition reversing camera lens according to claim 3, it is characterized in that: described front lens group meets the following conditions :-15<f1<-5,-6<f1/f0<-18, wherein f0 is the effective focal length of described camera lens, and f1 is front lens group focal length.
6. wide-angle high definition reversing camera lens according to claim 4, it is characterized in that: described rear lens group meets the following conditions: 1<f2<2.5,1.5<f2/f0<4.5, wherein f0 is the effective focal length of described camera lens, and f2 is rear lens group focal length.
7. the wide-angle high definition reversing camera lens according to claim 3 or 5, is characterized in that: after described lens optical, burnt BFL and camera lens effective focal length f0 meets the following conditions: BFL/f0<2.8.
8. wide-angle high definition reversing camera lens according to claim 1, is characterized in that: described 4th lens meet relational expression: Nd>1.75, Vd>45, and wherein Nd is refractive index, and Vd is Abbe constant.
9. wide-angle high definition reversing camera lens according to claim 1, it is characterized in that: the 5th lens meet relational expression: Nd>1.85, Vd<25, wherein Nd is refractive index, and Vd is Abbe constant.
10. the wide-angle high definition reversing camera lens according to any one of Claims 1 to 4, is characterized in that: the convex surface of described first lens be coated with waterproof anti-scratch optical film and convex surface facing the falcate sphere negative lens of object plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440215.5U CN204883029U (en) | 2015-06-23 | 2015-06-23 | Wide angle high definition rearview mirror head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520440215.5U CN204883029U (en) | 2015-06-23 | 2015-06-23 | Wide angle high definition rearview mirror head |
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| CN204883029U true CN204883029U (en) | 2015-12-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663773A (en) * | 2017-03-31 | 2018-10-16 | 宁波舜宇车载光学技术有限公司 | optical lens and imaging device |
| CN111352222A (en) * | 2020-05-25 | 2020-06-30 | 宁波永新光学股份有限公司 | Small high-definition vehicle-mounted wide-angle imaging system |
-
2015
- 2015-06-23 CN CN201520440215.5U patent/CN204883029U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663773A (en) * | 2017-03-31 | 2018-10-16 | 宁波舜宇车载光学技术有限公司 | optical lens and imaging device |
| CN108663773B (en) * | 2017-03-31 | 2020-10-23 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
| CN111352222A (en) * | 2020-05-25 | 2020-06-30 | 宁波永新光学股份有限公司 | Small high-definition vehicle-mounted wide-angle imaging system |
| CN111352222B (en) * | 2020-05-25 | 2020-08-11 | 宁波永新光学股份有限公司 | Small high-definition vehicle-mounted wide-angle imaging system |
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