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Patent Searching and Data


Title:
OPTICAL SYSTEM, CAMERA MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/184164
Kind Code:
A1
Abstract:
An optical system (10), sequentially comprising from an object side to an image side: a first lens unit (110) having positive refractive power; a second lens unit (120) having negative refractive power; and a third lens unit (130) and a fourth lens unit (140) having positive refractive power. The positions of the first lens unit (110) and the fourth lens unit (140) are kept fixed relative to an imaging surface (S17) of the optical system (10); the second lens unit (120) and the third lens unit (130) can move relative to the first lens unit (110) in an optical axis direction of the optical system (10); when the optical system (10) is zoomed from a short focal end to a telephoto focal end, the distance between the first lens unit (110) and the second lens unit (120) and the distance between the third lens unit (130) and the fourth lens unit (140) are increased.

Inventors:
ZOU HAIRONG (CN)
Application Number:
PCT/CN2020/079515
Publication Date:
September 23, 2021
Filing Date:
March 16, 2020
Export Citation:
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Assignee:
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
International Classes:
G02B13/18; G02B9/34; G02B11/20
Foreign References:
CN102132189A2011-07-20
CN104570277A2015-04-29
US20120075718A12012-03-29
CN110794555A2020-02-14
CN103969804A2014-08-06
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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