Shenzhen Guohua Optoelectronics Co., Ltd.

Academy of Shenzhen Guohua Optoelectronics

South China Normal University

South China Normal University Electronic Paper Display Institute

Weijie Zeng

Guofu Zhou

Wei Zhao

Xiaowen Hu

Haitao Sun

Qiumei Nie

Lingling Shui

Chun Ju

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.

Laser protective film and laser protective device comprising the same

A liquid crystal mixture and a temperature-responsive infrared reflection device made by using the liquid crystal mixture containing potassium laurate. Infrared light can pass through the device within a non-working temperature range, and a chiral dopant enables potassium laurate to form a cholesteric phase within a working temperature range. The birefringence value of the potassium laurate gradually increases with the increase of temperature between 12.5&#xb0; C. and 26&#xb0; C., so that the infrared reflection bandwidth of the device constantly increases. The birefringence value of the potassium laurate gradually decreases with the increase of temperature between 26&#xb0; C. and 54.5&#xb0; C., so that the infrared reflection bandwidth of the device constantly decreases. The infrared reflection bandwidth of the infrared reflection device can vary with temperature by adjusting the proportions of the ingredients of the liquid crystal mixture containing potassium laurate.

Liquid crystal mixture and temperature-responsive infrared reflection device

Growing community of inventors

Guangzhou, China

Weijie Zeng