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. 14, 2019
Filed:
May. 18, 2016
Boe Technology Group Co., Ltd., Beijing, CN;
Yanbing Wu, Beijing, CN;
Yingyi Li, Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
The present disclosure provides a blue light filtering film. The blue light filtering film has a non-planar structure such that, for light that is emitted at any incident angle from at least one side of the blue light film, a transmission light of the blue light filtering film involves small chromatic polarization. The blue light filtering film of the present disclosure is configured such that light lengths of the incident light in layers of the film do not change to great extent along with the angle θ and thus chromatic polarization is greatly alleviated, thereby not only achieving the effect of preventing damage caused by blue light but also eliminating chromatic polarization influence due to change of the light length for oblique incident light.