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:
Apr. 05, 2016
Filed:
Oct. 27, 2014
Alps Electric Co., Ltd., Tokyo, JP;
Motoki Hirayama, Niigata-ken, JP;
Hironori Namba, Niigata-ken, JP;
ALPS ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A light receiving device includes an optical substrate disposed over a light receiving surface. In the optical substrate, a first optical multilayer film is formed on an incident surface, a second optical multilayer film is formed on a surface opposite the incident surface, and a third optical multilayer film is formed on the light receiving surface. Light of two wavelength regions separated from each other is transmitted, and light of wavelength regions other than the two wavelength regions is blocked. The two wavelength regions include a first wavelength region on the short wavelength side and a second wavelength region on the long wavelength side. At least a predetermined proportion of light of the second wavelength region is transmitted, and the transmittance of light of the first wavelength region is limited within a predetermined range less than the predetermined proportion.