Title:
FLAT LENS AND OPTICAL IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/258932
Kind Code:
A1
Abstract:
A flat lens and an optical imaging system. The flat lens comprises a first surface (100) and a second surface (200). The first surface (100) comprises an annular light-transmitting region (110) and a first reflecting region (120) surrounded by the annular light-transmitting region (110). The second surface (200) comprises an imaging region (210) and a second reflecting region (220) surrounding the imaging region (210). The second reflecting region (220) is configured to reflect light incident from the annular light-transmitting region (110) to the first reflecting region (120), and the first reflecting region (120) is configured to reflect light incident thereon to the imaging region (210). The second reflecting region (220) comprises a first reflector (221). The first reflector (221) is one of a free form reflector, a non-spherical reflector, and a spherical reflector. The first reflecting region (120) comprises at least one of a free form reflector, a non-spherical reflector, a spherical reflector, and a planar reflector. According to the flat lens, the use of a reflecting structure comprising the first reflecting region (120) and the second reflecting region (220) can not only ensure that no chromatic aberration occurs during an imaging process, but also reduce the thickness and weight of the flat lens.
Inventors:
CHENG FANG (CN)
HONG TAO (CN)
ZHOU ZHENXING (CN)
HONG TAO (CN)
ZHOU ZHENXING (CN)
Application Number:
PCT/CN2021/094758
Publication Date:
December 30, 2021
Filing Date:
May 20, 2021
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
G02B17/08; G02B13/00
Foreign References:
| CN111880298A | 2020-11-03 | |||
| CN105046305A | 2015-11-11 | |||
| US20150168681A1 | 2015-06-18 | |||
| CN109870792A | 2019-06-11 | |||
| CN109407290A | 2019-03-01 | |||
| CN101581828A | 2009-11-18 | |||
| CN108513666A | 2018-09-07 | |||
| US20110317294A1 | 2011-12-29 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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