Solid-state imaging device with a two-dimensional array of...

Television – Camera – system and detail – Optics

Reexamination Certificate

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C348S273000, C348S294000

Reexamination Certificate

active

08004595

ABSTRACT:
To provide a solid-state imaging device that can capture an image which is bright through to its periphery, even when used in a single-lens reflex digital camera that accepts various interchangeable lenses from wide-angle to telephoto. The solid-state imaging device includes a two-dimensional array of unit pixels each of which includes a light-collecting element. A light-collecting element in a unit pixel is a combination of circular-sector-shaped light-collecting elements having different concentric structures. A central axis of the concentric structures is perpendicular to a light-receiving plane of the light-collecting element. Each of the circular-sector-shaped light-collecting elements is divided into concentric zone areas of a width equal to or smaller than a wavelength of incident light. Thus, an image which is bright through to its periphery can be captured even when light incident on a unit pixel changes from wide-angle to telecentric (chief rays are approximately parallel to an optical axis).

REFERENCES:
patent: 7718949 (2010-05-01), Toshikiyo
patent: 2006/0284052 (2006-12-01), Toshikiyo et al.
patent: 2006/0285228 (2006-12-01), Ishii et al.
patent: 2007/0035721 (2007-02-01), Toshikiyo et al.
patent: 2007/0146531 (2007-06-01), Toshikiyo
patent: 2007/0164329 (2007-07-01), Toshikiyo
patent: 2007/0200946 (2007-08-01), Onozawa et al.
patent: 2008/0011937 (2008-01-01), Toshikiyo
patent: 2008/0076039 (2008-03-01), Ishii et al.
patent: 2008/0106804 (2008-05-01), Ieda et al.
patent: 2008/0185500 (2008-08-01), Toshikiyo
patent: 2008/0251873 (2008-10-01), Kasano et al.
patent: 2005/101067 (2005-10-01), None

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