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:
Feb. 16, 2010
Filed:
Aug. 12, 2008
Kimiaki Toshikiyo, Osaka, JP;
Takanori Yogo, Kyoto, JP;
Motonori Ishii, Osaka, JP;
Toshinobu Matsuno, Kyoto, JP;
Kazutoshi Onozawa, Osaka, JP;
Kimiaki Toshikiyo, Osaka, JP;
Takanori Yogo, Kyoto, JP;
Motonori Ishii, Osaka, JP;
Toshinobu Matsuno, Kyoto, JP;
Kazutoshi Onozawa, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A solid-state imaging apparatus includes a plurality of unit pixels with associated microlenses arranged in a two-dimensional array. Each microlens includes a distributed index lens with a modulated effective refractive index distribution obtained by including a combination of a plurality of patterns having a concentric structure, the plurality of patterns being divided into line widths equal to or shorter than a wavelength of an incident light. At least one of the plurality of patterns includes a lower light-transmitting film having the concentric structure and a first line width and a first film thickness, and an upper light-transmitting film having the concentric structure configured on the lower light-transmitting film having a second line width and a second film thickness. The distributed index lens has a structure in which a refractive index material is dense at a center and becomes sparse gradually toward an outer side in the concentric structure.