Large-aperture ultrawide-angle low-distortion imaging system

An ultra-wide-angle, aperture technology, used in optics, optical components, instruments, etc., can solve the problems of large deformation of the screen and limited application range, and achieve the effect of clear focus, high-definition imaging, and saving loading space.

Pending Publication Date: 2018-09-04
UNION OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the existing optical lenses, the TV distortion is more than 10% when the field of view is around 100 degrees, the image distortion is large, and the application range is very limited.

Method used

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] like figure 1 , figure 2 As shown, a large aperture ultra-wide-angle small distortion imaging system is sequentially provided with a cemented lens composed of a first lens 1, a second lens 2, a third lens 3 and a fourth lens 4 from the object plane to the image plane, and the diaphragm aperture A, the cemented lens composed of the fifth lens 5, the sixth lens 6 and the seventh lens 7, the eighth lens 8, the ninth lens 9, the optical filter 10 and the photosensitive sheet 11; the first lens 1 is a negative focal length lens, The side facing the object plane is a convex aspheric surface, and the other side facing the image plane is a concave aspheric surface. The shape of the lens greatly affects the amount of distortion; the second lens 2 is a positive focal length lens, and its side facing the object plane It is a convex aspheric surface, and the ot...

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PUM

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Abstract

The invention discloses a large-aperture ultrawide-angle low-distortion imaging system comprising a glued lens piece formed by a first lens, a second lens, a third lens and a fourth lens, a diaphragmaperture A, a glued lens piece formed by a fifth lens 5, a sixth lens 6 and a seventh lens 7, an eighth lens 8, a ninth lens 8, a light filter 10 and a photosensitive piece 11 which are arranged fromthe object plane to the image plane in turn, wherein the aperture size of the first lens 1 is D1, the distance between the first lens 1 and the photosensitive piece 6 is TL, the total focal length ofthe optical lens is f, and D1, TL and f meet: 0.2<f / TL<0.3 and 0.6<D1 / TL<0.4. The wide-angle light can be effectively converged and 100-degree ultrawide-angle photographing can be realized; the plastic lens can be used and the processing cost can be reduced; and the positive distortion produced by other lens pieces can be effectively neutralized by the R2 plane so as to guarantee low-distortion imaging.

Description

【Technical field】 [0001] The patent of the present invention relates to a large-aperture ultra-wide-angle small-distortion imaging system. 【Background technique】 [0002] In the existing optical lens, the TV distortion is more than 10% when the field of view angle is around 100 degrees, the distortion of the picture is large, and the application range is very limited. [0003] Due to the above-mentioned problems, it is necessary to propose a solution, and the present invention is made under such a background. 【Content of invention】 [0004] The technical problem to be solved by the present invention is to provide a large-aperture ultra-wide-angle and small-distortion imaging system for the above-mentioned deficiencies in the prior art. The large-aperture ultra-wide-angle and small-distortion imaging system realizes imaging with a large aperture ultra-wide-angle FOV of 100° or more with distortion less than 3%, which satisfies large image surface imaging and clear imaging....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06
CPCG02B13/004G02B13/06
Inventor 鲍康倩肖明志罗吉祥赵望妮
Owner UNION OPTECH
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