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:
Jul. 09, 2024
Filed:
Oct. 24, 2019
Nippon Electric Glass Co., Ltd., Otsu, JP;
Keiichi Sahara, Otsu, JP;
Masaaki Imura, Otsu, JP;
Tsutomu Imamura, Otsu, JP;
Yasutaka Tanabe, Otsu, JP;
Nippon Electric Glass Co., Ltd., Shiga, JP;
Abstract
Provided are: a band-pass filter for which filter characteristics can be improved; and a manufacturing method therefor. A band-pass filter, which allows light of a specific wavelength region to pass, includes: a substratewhich has light transmitting properties; a first dielectric multilayer filmthat is provided on a first main surface Sof the substrate; and a second dielectric multilayer filmthat is provided on a second main surface Swhich is opposite the first main surface S. The first dielectric multilayer filmcontains a hydrogenated silicon layer. The second dielectric multilayer filmcontains a hydrogenated silicon layer.