The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2021
Filed:
Oct. 10, 2018
South China Normal University, Guangzhou, CN;
Shenzhen Guohua Optoelectronics Co., Ltd., Shenzhen, CN;
Academy of Shenzhen Guohua Optoelectronics, Shenzhen, CN;
Guofu Zhou, Guangzhou, CN;
Xiaowen Hu, Guangzhou, CN;
Wei Zhao, Guangzhou, CN;
Haitao Sun, Guangzhou, CN;
Qiumei Nie, Guangzhou, CN;
South China Normal University, Guangzhou, CN;
Shenzhen Guohua Optoelectronics Co., Ltd., Shenzhen, CN;
Academy of Shenzhen Guohua Optoelectronics, Shenzhen, CN;
Abstract
A dye-doped laser protective film is disclosed, comprising a polymer layer A and a polymer layer B. The polymer molecules in the polymer layer A are arranged in a left-handed helical structure which can reflect a left-handed polarized laser. The polymer molecules in the polymer layer B are arranged in a right-handed helical structure which can reflect a right-handed polarized laser. The combination of the polymer layer having the left-handed helical structure and the polymer layer having the right-handed helical structure can completely reflect circularly polarized light. In addition, the dye can absorb incident laser, so as to expand the protection angle of the laser protective film. The dye-doped laser protective film of the present disclosure has a simple manufacturing process, large protection angle and good flexibility, and can refit existing devices. Thus, the dye-doped laser protective film of the present disclosure has a good application prospect in many fields such as laser goggles, window films and the like.