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:
May. 28, 2019
Filed:
Jun. 02, 2017
Applicant:
Chengfeng Optronics Corporation, Taichung, TW;
Inventor:
Ching-Fang Wong, Taichung, TW;
Assignee:
ChengFeng Optronics Corporation, Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/03 (2006.01); F21V 8/00 (2006.01); F21S 11/00 (2006.01); F21V 14/00 (2018.01); G02B 5/23 (2006.01); G02B 5/02 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0043 (2013.01); F21S 11/007 (2013.01); F21V 14/003 (2013.01); G02B 5/0215 (2013.01); G02B 5/0221 (2013.01); G02B 5/0273 (2013.01); G02B 5/0294 (2013.01); G02B 5/23 (2013.01); G02B 6/005 (2013.01);
Abstract
An optical transmittance adjustment device including a light guide plate and an optical transmittance adjustment film is provided. The light guide plate has a first surface and a second surface, wherein the second surface is opposite to the first surface and has a plurality of light scattering microstructures. The optical transmittance adjustment film is located at a side of the light guide plate, and the light scattering microstructures are located between the optical transmittance adjustment film and the light guide plate.