Title:
LARGE-APERTURE WIDE-ANGLE OPTICAL SYSTEM AND PHOTOGRAPHING MODULE APPLIED BY SAME
Document Type and Number:
WIPO Patent Application WO/2021/012595
Kind Code:
A1
Abstract:
Disclosed in embodiments of the present invention is a large-aperture wide-angle optical system, sequentially comprising, from an object plane to an image plane along an optical axis: a first lens, a diaphragm, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. On the other hand, the embodiments of the present invention further provide a photographing module. The embodiments of the present invention mainly consist of six lenses, so that the optical system has a small quantity of lenses, a simple structure, and low costs; and the diaphragm is located between the first lens and the second lens, which helps to shorten a front end aperture, so that an overall shape is moderate. Meanwhile, the diaphragm is disposed near the front, different lenses are combined with each other, and a focal power is reasonably assigned, so that the optical system has optical performance such as being large in bore diameter, high in resolution, large in aperture, and good in athermalization, and is applicable to the field of vehicle-mounted lenses.
Inventors:
LIU HONGHAI (CN)
LIU ZHENTING (CN)
WANG HONGFEI (CN)
DU LIANG (CN)
LIU JIAJUN (CN)
LIU YI (CN)
HUANG CHUWEN (CN)
LIU ZHENTING (CN)
WANG HONGFEI (CN)
DU LIANG (CN)
LIU JIAJUN (CN)
LIU YI (CN)
HUANG CHUWEN (CN)
Application Number:
PCT/CN2019/126533
Publication Date:
January 28, 2021
Filing Date:
December 19, 2019
Export Citation:
Assignee:
GUANGDONG HONGJING OPTOELECTRONIC TECH INC (CN)
International Classes:
G02B13/00; G02B13/06; G02B13/18
Domestic Patent References:
| WO2019234954A1 | 2019-12-12 |
Foreign References:
| CN110320646A | 2019-10-11 | |||
| US4403837A | 1983-09-13 | |||
| US4764001A | 1988-08-16 | |||
| US4867546A | 1989-09-19 |
Attorney, Agent or Firm:
ZHONGSHAN JIEKAI PATENT&TRADEMARK FIRM (CN)
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