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Wide-angle lens

An ultra-wide-angle lens technology, applied in the field of ultra-wide-angle lenses, can solve the problems of high manufacturing cost and low resolution of ultra-wide-angle lenses, and achieve the effect of low manufacturing cost and high resolution

Active Publication Date: 2018-12-11
FUJIN PRECISION IND JINCHENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, it is necessary for the present invention to provide a super wide-angle lens to solve the technical problems of low resolution and high manufacturing cost of the existing super wide-angle lens

Method used

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Embodiment Construction

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0015] Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0016] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention.

[0017] figure 1 A super wide-angle lens 100 provided by a preferre...

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Abstract

A wide-angle lens includes a first mirror group, a diaphragm, and a second mirror group sequentially arranged from an object side to an image side; the diaphragm being disposed between the first mirror group and the second mirror group. The first mirror group has a positive focal power including a first lens having a negative focal power, a second lens having a negative focal power, a third lens having a negative focal power, and a fourth lens having a positive focal power; the first lens, the second lens, the third lens, and the fourth lens are sequentially arranged from the object side to the image side; the second mirror group has a positive focal power, which includes a fifth lens of positive focal power, a sixth lens having negative focal power, a seventh lens having positive focal power, and an eighth lens having positive focal power; the fifth lens, the sixth lens, the seventh lens and the eighth lens are sequentially arranged from the object side to the image side.

Description

technical field [0001] The invention relates to a lens, in particular to a super wide-angle lens. Background technique [0002] In the prior art, a lens with an incident angle of light greater than or equal to 180° can be called a fisheye lens or an ultra-wide-angle lens. The proportion of ultra-wide-angle lenses used in automobiles and security systems has increased year by year, and has even gradually expanded to the consumer market. The demand for ultra-wide-angle lenses in the market is increasing, and the market competition is becoming more and more fierce. The ultra-wide-angle lens in the prior art usually adopts an all-glass structure, which has low resolution and high cost. Therefore, how to solve the low resolution and high manufacturing cost of the ultra-wide-angle lens is the current problem. Contents of the invention [0003] In view of this, it is necessary for the present invention to provide an ultra-wide-angle lens to solve the technical problems of low ...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B13/18
CPCG02B9/06G02B13/06G02B13/18G02B7/04G02B9/64G02B13/0045G02B15/142
Inventor 李明燐
Owner FUJIN PRECISION IND JINCHENG CO LTD