Ultra-short focus wide-angle lens

A wide-angle lens and ultra-short-focus technology, applied in installation, optics, instruments, etc., can solve the problem of short lens height and achieve the effect of ultra-short lens height, excellent waterproof performance, and high energy utilization rate

Inactive Publication Date: 2009-08-19
河南同城光电有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The wide-angle can also adjust any point in the image to the most appropriate focal length, making the picture clearer. In terms of technology for obtaining clear images with wide-angle lenses, the image can be improved by changing the combination of lenses inside the lens and the material and parameters of the lens itself. However, under the current technical conditions, it is difficult to find a suitable way to adjust the lens to meet the requirements of short lens height, high resolution and good waterproof effect. This has always been a problem that technicians in the technical field need to solve

Method used

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Embodiment Construction

[0015] An ultra-short-focus wide-angle lens, comprising a picture frame 1 and an end cap 2, in which a convex-convex lens 3, a plano-convex lens 4, a meniscus convex lens 6, a double-convex lens 7, and a curved Lunar concave lens 8 is formed, is separated by spacer ring 9 between the lens, biconvex lens 7 and meniscus concave lens 8 are cemented together, is provided with waterproof ring 5 between convex-concave lens 3 and picture frame 1, and waterproof effect is good.

[0016] The outer diameter of the convex-concave lens is 10.4mm, the near-object side spherical radius is 30mm, the far-object side concave spherical radius is 2.196mm, the central thickness of the lens is 1.93mm, and the material is ZLAF50;

[0017] The central thickness value of the plano-convex lens is 1.2 mm, the outer diameter is 5 mm, the spherical radius of the near object side is 4.715 mm, the far object side is a plane, and the material is K9;

[0018] The central thickness value of the meniscus conve...

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Abstract

The invention discloses a wide angle lens, comprising a lens frame and an end cover; the frame is internally provided with a convex concave lens, a plane convex lens, a meniscus convex lens, a double convex lens and a meniscus concave lens in sequence from an object-near side to an object-far side; the lenses are separated from one another by spacers; the double convex lens and the meniscus concave lens are glued together; and a water-proof ring is arranged between the convex concave lens and the lens frame. Compared with the prior art, the wide angle lens has the advantages of ultrashort lens height, high resolution and excellent water-proof performance, and can be widely applied to the rearviewing of automobiles.

Description

technical field [0001] The invention belongs to the technical field of image acquisition equipment, and in particular relates to an ultra-short-focus wide-angle lens. Background technique [0002] The biggest feature of wide-angle is that it can shoot a wide range, which has the characteristics of exaggerating the sense of distance and wide focus range. When using the wide-angle, you can enlarge the objects in front of you and shrink the distant objects smaller. It is also a major feature that the surrounding images are easily distorted. The wide-angle can also adjust any point in the image to the most appropriate focal length, making the picture clearer. In terms of technology for obtaining clear images with wide-angle lenses, the image can be improved by changing the combination of lenses inside the lens and the material and parameters of the lens itself. However, under the current technical conditions, it is difficult to find a suitable way to adjust the lens to meet the...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B7/02
Inventor 朱大海周建忠徐小纳王琼朱波
Owner 河南同城光电有限公司
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