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:
Dec. 11, 2012
Filed:
Feb. 22, 2010
Yasushi Nakata, Yamato, JP;
Masataka Ito, Chigasaki, JP;
Yasushi Nakata, Yamato, JP;
Masataka Ito, Chigasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A device comprises a photoelectric conversion portion including a light receiving surface, and a condensing structure which condenses light to the photoelectric conversion portion, wherein in the condensing structure, a first insulating film and a second insulating film having a refractive index higher than that of the first insulating film are laid out in a plane perpendicular to a normal passing through a center of the light receiving surface such that a density of the second insulating film is higher in a central portion of the plane than in a peripheral portion of the plane, and a layout pattern of the first insulating film and the second insulating film in the plane includes a portion having a dimension not more than a maximum wavelength of a visible light range.