Solid-state image pickup device having microlenses each with dis

Details Solid-state image pickup device having microlenses each with dis Solid-state image pickup device having microlenses each with dis

1995-09-12

1997-03-11

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502081, 250239, 257432, H01J 314

Patent

active

056103905

ABSTRACT:
A solid-state image pickup device capable of forming a high quality image over the entire pixel constituent element region of a solid-state image pickup element even when an image taking lens system has a close exit pupil. A solid-state image pickup device has a solid-state image pickup element consisting of a plurality of constituent pixel elements arranged in a predetermined pattern and a plurality of pixel openings each of which defines the shape of an opening of the constituent pixel element, and a plurality of microlenses each of which is disposed immediately in front of each pixel opening. The optical axis of the microlens is displaced toward the optical axis of the image taking lens system in relation to the center axis of the pixel opening by the amount of displacement corresponding to a center distance between the optical axis of the image taking lens system and the center axis of the pixel opening. With this arrangement, even if the image taking lens system has a close exit pupil, the luminous flux obtained by the microlens is efficiently taken into the pixel opening irrespective of the position of the pixel constituent element on the solid-state image pickup element.

REFERENCES:
patent: 5250798 (1993-10-01), Iizuka et al.
patent: 5324930 (1994-06-01), Jech, Jr.

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