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Patent Searching and Data


Title:
OPTICAL CAVITY, OPTICAL SYSTEM AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/140923
Kind Code:
A1
Abstract:
The present disclosure provides an optical cavity, an optical system and a display device, comprising: an optical path adjusting element and a plurality of sidewalls. The plurality of sidewalls include a first sidewall being provided with at least one opening. The optical path adjusting element is connected to the first sidewall, and the orthographic projection of the optical path adjusting element on a plane where the first sidewall is located is at least partially located in an area where the opening is located. The plurality of sidewalls is configured to reflect light in the optical cavity, and the optical path adjusting element is configured to uniformly emit light reflected by means of the plurality of sidewalls. As the light incident into the optical cavity can be reflected by the plurality of sidewalls to the optical path adjusting element and be emitted uniformly by means of the optical path adjusting element, during practical application, when a light source provides incident light for the optical cavity, the optical cavity may uniformly emit the incident light provided by the light source, and thus a light guide plate can be provided with uniform light, and then the phenomenon of uneven brightness on the light guide plate can be effectively improved.

Inventors:
LIANG FEI (CN)
SUN LINGYU (CN)
CHEN XIUYUN (CN)
DU JINGJUN (CN)
Application Number:
PCT/CN2018/104017
Publication Date:
July 25, 2019
Filing Date:
September 04, 2018
Export Citation:
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Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE OPTOELECTRONICS TECH CO LTD (CN)
International Classes:
G02B27/09; F21S8/00; F21V7/00; F21V13/04; G02F1/13357
Foreign References:
CN108279505A2018-07-13
CN104456290A2015-03-25
CN102182968A2011-09-14
CN203517528U2014-04-02
US20140140044A12014-05-22
JP2007227060A2007-09-06
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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