CN209879122U

CN209879122U - Small R value lens for wide-angle lens

Info

Publication number: CN209879122U
Application number: CN201921023195.6U
Authority: CN
Inventors: 赵卫平; 杨林松; 谢涛; 徐厚群
Original assignee: Hongjing Photoelectric (xiantao) Technology Co Ltd
Current assignee: Hongjing Photoelectric (xiantao) Technology Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2019-12-31
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a little R value lens for wide-angle lens relates to the lens field, and this little R value lens includes the glass substrate, the last first SiO that has set gradually of glass substrate₂Film layer, first ZrO₂Film layer, Al₂O₃Film layer, second ZrO₂Layer, second SiO₂Film layer, third ZrO₂A layer; the first SiO₂The thickness of the film layer is 14-20 nm, and the first ZrO layer₂The thickness of the film layer is 20-22 nm, and the Al is₂O₃The thickness of the film layer is 30-35 nm, and the second ZrO layer₂The thickness of the layer is65-68 nm, the second SiO₂The thickness of the film layer is 12-16 nm, and the third ZrO layer₂The thickness of the layer is 42 to 46 nm. The utility model discloses a lens reflectivity is lower and the light path incident angle of lens when 65 on, still can obtain the function of the lower reflectivity of broadband domain, can avoid the blurring and the miscellaneous shadow of crescent in the partial image quality edge of outward flange, and the camera lens that uses this lens can obtain better image quality when the formation of image.

Description

Small R value lens for wide-angle lens

Technical Field

The utility model relates to a lens field, concretely relates to little R value lens for wide-angle lens.

Background

The wide-angle lens with small R value (namely, the curvature of two surfaces of the lens is 1.0-3.5) is widely applied to the fields of automobile 360-degree panoramic images, automobile fatigue driving monitoring, automobile data recorders, motion cameras, robot navigation, small intelligent systems, engineering measurement and the like due to the fact that the wide-angle lens has an ultra-large visual angle. The existing wide-angle lens with small R value has the problems of blurred image quality edge and crescent image at the edge part beyond 190 degrees, and the definition of a picture is influenced.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims to provide a little R value lens for wide-angle lens can avoid the partial image quality edge of outward flange blur and the miscellaneous shadow of crescent, guarantees the definition of picture.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a little R value lens for wide-angle lens, including glass substrate, the last first SiO that has set gradually of glass substrate₂Film layer, first ZrO₂Film layer, Al₂O₃Film layer, second ZrO₂Layer, second SiO₂Film layer, third ZrO₂A layer; the first SiO₂The thickness of the film layer is 14-20 nm, and the first ZrO layer₂The thickness of the film layer is 20-22 nm, and the Al is₂O₃The thickness of the film layer is 30-35 nm, and the second ZrO layer₂The thickness of the layer is 65-68 nm, and the second SiO layer₂The thickness of the film layer is 12-16 nm, and the third ZrO layer₂The thickness of the layer is 42 to 46 nm.

Further, the third ZrO₂A third SiO layer is arranged on the layer₂Film layer of the third SiO₂The thickness of the film layer is 90-100 nm.

Further, said first stepTrisio₂The thickness of the film layer was 95.5 nm.

Further, the first SiO₂The thickness of the film layer was 16 nm.

Further, the first ZrO₂The thickness of the film layer was 21.11 nm.

Further, said Al₂O₃The thickness of the film layer was 33.08 nm.

Further, the second ZrO₂The thickness of the layer was 66.71 nm.

Further, the second SiO₂The thickness of the film layer was 14.2 nm.

Further, the third ZrO₂The thickness of the layer was 44.94 nm.

Compared with the prior art, the utility model has the advantages of:

(1) the utility model discloses well little R value lens that is used for wide-angle lens for the lens reflectivity is lower and the light path incident angle of lens when 65 on, still can obtain the function of the lower reflectivity of broadband domain, can avoid the blurred and crescent shadow of camera lens outward flange part image quality edge, guarantees the definition of picture, can obtain better image quality when using the camera lens formation of image of this lens.

Drawings

Fig. 1 is a schematic structural diagram of a small R-value lens for a wide-angle lens according to an embodiment of the present invention.

In the figure: 1-glass substrate, 2-first SiO₂Film layer, 3-first ZrO₂Film layer, 4-Al₂O₃Film layer, 5-second ZrO₂Layer, 6-second SiO₂Film layer, 7-third ZrO₂Layer, 8-third SiO₂And (5) film layer.

Detailed Description

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, the embodiment of the present invention provides a small R value lens for wide-angle lens, which includes a glass substrate 1, and a first SiO layer is sequentially disposed on the glass substrate 1₂Film layer 2, first ZrO₂Film layer 3, Al₂O₃Film 4, second ZrO₂Layer 5, second SiO₂Film 6, third ZrO₂Layer 7 and third SiO₂Film layer 8, first SiO₂Film layer 2, first ZrO₂Film layer 3, Al₂O₃Film 4, second ZrO₂Layer 5, second SiO₂Film 6, third ZrO₂Layer 7 and third SiO₂The film layer 8 is arranged in sequence, so that the surface layer of the lens has high temperature and high humidity resistance, the reflectivity of the lens can be reduced, the function of low reflectivity of a broadband can be still achieved when the light path incident angle of the lens is 65 degrees, the blurring of the image quality edge of the outer edge part and the crescent ghost can be avoided, the definition of the image is guaranteed, and the lens can obtain good image quality when the small R value lens is used for imaging.

First SiO₂Film layer 2, first ZrO₂Film 3, second ZrO₂Layer 5, second SiO₂Film 6 and third ZrO₂Layer 7 can make the hardness on lens surface reach 7-9H, and has better anti acid-base nature, long-term antioxidant property, can make the lens receive outside impulsive force effect when using, and chemical acid-base solution still can normal use when corroding or other harsher environment, and has longer life, can avoid the lens to need to change after impaired, reduces use cost.

Wherein, the first SiO₂The thickness of the film layer 2 is 14-20 nm, and the first ZrO₂The thickness of the film layer 3 is 20-22 nm, and Al₂O₃The thickness of the film layer 4 is 30-35 nm, and the second ZrO is₂The thickness of the layer 5 is 65-68 nm, and the second SiO is₂The thickness of the film layer 6 is 12-16 nm, and the third ZrO layer₂The thickness of the layer 7 is 42-46 nm, and the third SiO is₂The thickness of the film layer 8 is 90-100 nm.

In actual production process, the thickness of each layer is selected according to actual need, the embodiment of the utility model provides an in, the optimum thickness of each layer as follows: first SiO₂The thickness of the film layer 2 is 16nm and the first ZrO₂The thickness of the film layer 3 is 21.11nm and Al₂O₃The thickness of the film layer 4 is 33.08nm and the second ZrO₂Layer 5 has a thickness of 66.71nm and a second SiO₂The thickness of the film layer 6 is14.2nm, third ZrO₂Layer 7 has a thickness of 44.94nm and a third SiO₂The thickness of rete 8 is 95.5nm, under this condition, the utility model discloses the lens is to the light reflectivity R of wavelength at 420 ~ 730nm<0.4%, can effectively avoid the blurring of picture quality edge and the miscellaneous shadow of crescent of outward flange part, improve the definition of picture.

The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.

Claims

1. A small R-value lens for a wide-angle lens, comprising a glass substrate (1), characterized in that: the glass substrate (1) is sequentially provided with a first SiO₂Film layer (2) and first ZrO₂Film layer (3), Al₂O₃Film layer (4) and second ZrO₂Layer (5), second SiO₂Film layer (6) and third ZrO₂A layer (7); the first SiO₂The thickness of the film layer (2) is 14-20 nm, and the first ZrO layer₂The thickness of the film layer (3) is 20-22 nm, and the Al is₂O₃The thickness of the film layer (4) is 30-35 nm, and the second ZrO₂The thickness of the layer (5) is 65-68 nm, and the second SiO is₂The thickness of the film layer (6) is 12-16 nm, and the third ZrO layer₂The thickness of the layer (7) is 42 to 46 nm.

2. A small R-value lens for a wide-angle lens as claimed in claim 1, wherein: the third ZrO₂A third SiO layer is also arranged on the layer (7)₂A film layer (8), the third SiO₂The thickness of the film layer (8) is 90-100 nm.

3. A small R-value lens for a wide-angle lens as claimed in claim 2, wherein: the third SiO₂The thickness of the film layer (8) is 95.5 nm.

4. As in claimClaim 1A small R value lens for wide-angle lens, characterized in that: the first SiO₂The thickness of the film layer (2) is 16 nm.

5. A small R-value lens for a wide-angle lens as claimed in claim 1, wherein: the first ZrO₂The thickness of the film layer (3) is 21.11 nm.

6. A small R-value lens for a wide-angle lens as claimed in claim 1, wherein: the Al is₂O₃The thickness of the film layer (4) is 33.08 nm.

7. A small R-value lens for a wide-angle lens as claimed in claim 1, wherein: the second ZrO₂The thickness of the layer (5) was 66.71 nm.

8. A small R-value lens for a wide-angle lens as claimed in claim 1, wherein: the second SiO₂The thickness of the film layer (6) is 14.2 nm.

9. A small R-value lens for a wide-angle lens as claimed in claim 1, wherein: the third ZrO₂The thickness of the layer (7) was 44.94 nm.