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:
Jun. 09, 2020
Filed:
Jan. 11, 2018
Agc Inc., Chiyoda-ku, JP;
Mitsuyuki Tatemura, Haibara-gun, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
An optical filter has a substrate, a refractive index adjusting layer on the substrate, a characteristic improving layer having a stress adjustment function on the refractive index adjusting layer, and an optical multilayer film on the characteristic improving layer, wherein the refractive index adjusting layer is constituted by one to three layers, and the characteristic improving layer is a single-layer film whose physical film thickness is 600 nm or more. The optical filter whose substrate has small warpage and which has a good spectral characteristic is provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile