Abstract: Disclosed are a laser protective film and a laser protective device comprising the same. The laser protective film comprises, stackingly disposed: a first liquid crystal polymer layer for reflecting left-hand polarized light, a second liquid crystal polymer layer for reflecting right-hand polarized light, and a third liquid crystal polymer layer for absorbing incident laser. In the above way, the laser protective film of the present disclosure has a large angle of protection, high flexibility. In addition, it is easy to find any damage to the laser protective film of the present disclosure. Moreover, it can make modification to existing equipment. Thus, the present disclosure has a good application prospect in many fields such as laser goggles, window glass and the like.
Type:
Grant
Filed:
October 10, 2018
Date of Patent:
February 22, 2022
Assignees:
SOUTH CHINA NORMAL UNIVERSITY ELECTRONIC PAPER DISPLAY INSTITUTE, SHENZHEN GUOHUA OPTOELECTRONICS CO., LTD., ACADEMY OF SHENZHEN GUOHUA OPTOELECTRONICS
Inventors:
Guofu Zhou, Xiaowen Hu, Wei Zhao, Qiumei Nie, Weijie Zeng, Haitao Sun
Abstract: A multi-stable electroresponsive smart window and preparation method thereof are disclosed. The multi-stable electroresponsive smart window comprises a first light transmitting conductive substrate, a parallel orientation layer, a positive polymer stabilized cholesteric texture layer, a positive cholesteric texture layer and a second light transmitting conductive substrate disposed in stack successively. The multi-stable electroresponsive smart window of the present disclosure can realize a diversified light transmission state such as colored and transparent state, colored and blur state, colorless and blur state, and colorless and transparent state by changing the magnitude of the access voltage, thereby satisfying the various demands in people's work and life.
Type:
Grant
Filed:
June 15, 2021
Date of Patent:
December 28, 2021
Assignees:
South China Normal University, Electronic Paper Display Institute, South China Normal Univ
Inventors:
Guofu Zhou, Xiaowen Hu, Wei Zhao, Haitao Sun