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:
Aug. 14, 2018
Filed:
Jul. 10, 2015
Asahi Glass Company, Limited, Tokyo, JP;
So Ishido, Koriyama, JP;
Hiromichi Nagayama, Koriyama, JP;
Kenichi Shioya, Koriyama, JP;
Hiroki Hotaka, Koriyama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
An optical device has a visible light transmittance that decreases from a central part thereof towards a peripheral part thereof. The optical device includes a visible light absorbing part, made of a material that absorbs at least a part of visible light, and having a thickness that increases from a central part thereof towards a peripheral part thereof, and a visible light transmitting part, made of a material that transmits the visible light, and is stacked on the visible light absorbing part. A relationship T420/T360>=3 is satisfied, where T420 denotes a transmittance of light having a wavelength of 420 nm, and T360 denotes a transmittance of light having a wavelength of 360 nm.