Title:
CATADIOPTRIC OPTICAL LENS BASED ON TWO MANGIN MIRRORS
Document Type and Number:
WIPO Patent Application WO/2022/133964
Kind Code:
A1
Abstract:
A catadioptric optical lens based on two Mangin mirrors. A front correction group is a transmitting lens group composed of two spherical lenses (101, 102); a middle reflecting and focusing group is composed of two Mangin mirrors, namely, a main Mangin mirror (103) and a secondary Mangin mirror (102), wherein an effective light-transmitting part of the main Mangin mirror (103) is a peripheral annular region (s105, s106, s107) of the main Mangin mirror, the secondary Mangin mirror (102) is the middle part of any lens in the front correction group, and the front surface of the secondary Mangin mirror (102) is plated with a reflecting film; and a rear correction group has a three-lens glued structure, wherein one lens is a central part region of the main Mangin mirror (103), and the other two lenses (104, 105) are glued and fixed on two sides or the same side of the central part of the main Mangin mirror (103). The two Mangin mirrors (102, 103) are used for shortening the length of a system, thereby achieving a compact structure and reducing a marginal ray height; and in combination with the front correction group, a main spherical aberration and positional chromatic aberration of the lens can be eliminated. The rear correction group can effectively correct residual optical aberration of the system by means of the three-lens glued form thereof; and a reflecting optical path and a refracting optical path share the lenses, such that the compact optical lens with a long focal length, a large numerical aperture and a high resolution can be realized.
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Inventors:
ZHOU JIANKANG (CN)
SHEN WEIMIN (CN)
SHEN WEIMIN (CN)
Application Number:
PCT/CN2020/139186
Publication Date:
June 30, 2022
Filing Date:
December 24, 2020
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
G02B17/08
Foreign References:
| US20130308181A1 | 2013-11-21 | |||
| US7136234B2 | 2006-11-14 | |||
| US9507129B2 | 2016-11-29 | |||
| CN102870031A | 2013-01-09 | |||
| CN112630948A | 2021-04-09 | |||
| CN214067483U | 2021-08-27 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD. (CN)
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