Title:
CAMERA LENS OF CATADIOPTRIC OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/258611
Kind Code:
A1
Abstract:
The present invention provides a camera lens of a catadioptric optical system, the camera lens being composed of two lens assemblies and one lens group, and having a low height, a narrow angle and good optical characteristics. The camera lens of a catadioptric optical system is provided, in sequence from an object side, with a first lens assembly having a reflective power and a refractive power, a second lens assembly having a reflective power and a refractive power, and a third lens group having a refractive power; an object side face of the first lens assembly has a first refraction face in a circumferential area, and has a second reflection face in a central area; an image side face of the first lens assembly has a second refraction face, a fifth refraction face, and a sixth refraction face in sequence from the circumferential area to the central area, an object side face of the second lens assembly has a third refraction face and a fourth refraction face in sequence from the circumferential area to the central area, and an image side face of the second lens assembly has a first reflection face, and satisfies a given relational expression.
Inventors:
NITTA KOJI (JP)
YAMAZAKI KAORU (JP)
YAMAZAKI KAORU (JP)
Application Number:
PCT/CN2020/127917
Publication Date:
December 30, 2021
Filing Date:
November 10, 2020
Export Citation:
Assignee:
AAC OPTICS SHENZHEN CO LTD (CN)
International Classes:
G02B13/00; G02B17/08
Foreign References:
| JPS5928118A | 1984-02-14 | |||
| CN108254859A | 2018-07-06 | |||
| CN111722366A | 2020-09-29 | |||
| CN111679397A | 2020-09-18 | |||
| CN101587229A | 2009-11-25 | |||
| JP2014092752A | 2014-05-19 |
Attorney, Agent or Firm:
SHENZHEN ZICHEN INTELLECTUAL PROPERTY AGENCY LIMITED (CN)
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