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:
Oct. 23, 2012
Filed:
Jul. 24, 2009
Seiji Nishiwaki, Hyogo, JP;
Masa-aki Suzuki, Osaka, JP;
Shin-ichi Wakabayashi, Osaka, JP;
Kazuya Yonemoto, Osaka, JP;
Masao Hiramoto, Osaka, JP;
Seiji Nishiwaki, Hyogo, JP;
Masa-aki Suzuki, Osaka, JP;
Shin-ichi Wakabayashi, Osaka, JP;
Kazuya Yonemoto, Osaka, JP;
Masao Hiramoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An imaging photodetection device () includes: a plurality of photodetectors () that are arrayed on a substrate () at least along a first direction; a transparent low refractive index layer () that is formed above the plurality of photodetectors; and a plurality of transparent high refractive index sections () that are embedded in the transparent low refractive index layer along the first direction. On a cross-section of the transparent high refractive index sections orthogonal to the substrate and along the first direction, central axes () of the transparent high refractive index sections are bent stepwise. Light that enters the transparent low refractive index layer and the transparent high refractive index section passes therethrough to be separated into 0-order diffracted light, 1-order diffracted light, and −1-order diffracted light. Thereby, improvement in the efficiency of light utilization and pixel densification can be realized.