Solid state imaging device

Details Solid state imaging device Solid state imaging device

2007-09-27

2009-11-10

Epps, Georgia Y (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S214100, C348S340000

Reexamination Certificate

active

07615732

ABSTRACT:
Light guides are formed above each light receiving element. These light guides are made of a high refractive index material, and surrounded by a material of lower refractive index. The light guides are each made up of a light introduction region leading with a constant width from a light entrance surface, and a tapered reduced region leading from the light introduction region to a light exit surface. The light introduction region totally reflects the incident light toward the reduced region. The reduced region, owing to its tapered shape, surely directs the light onto a light receiving element, and prevents the light from entering charge transfer paths around the light receiving element.

REFERENCES:
patent: 5371397 (1994-12-01), Maegawa et al.
patent: 2004/0004668 (2004-01-01), Namazue et al.
patent: 5-283661 (1993-10-01), None
patent: 2004-221532 (2004-08-01), None

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