Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-10-17
1991-11-12
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250234, 359385, 359386, H01J 314
Patent
active
050650084
ABSTRACT:
A confocal scanning microscope comprises a light projecting device with which a small light spot of a light beam is formed on a sample, and a scanning mechanism which causes the light spot to scan the sample in main scanning and sub-scanning directions. A light receiving device condenses the light beam, which has passed through the sample, and an image of the condensed light beam is formed as a point image. A shutter array provided with a plurality of small light shutters, which are arrayed two-dimensionally, is located at a plane on which the point image is formed. An operating circuit sets a light shutter corresponding to the position, at which the point image is formed at any given instant, to an open state in synchronization with the main scanning and the sub-scanning with the light spot. A photodetector having a light receiving surface, which faces the whole surface of the shutter array, detects the point image through the light shutter, which has been set to the open state. A circuit divides the output of the photodetector into picture elements in synchronization with the main scanning and the sub-scanning.
REFERENCES:
patent: 4677301 (1987-06-01), Tanimoto et al.
patent: 4712873 (1987-12-01), Kanbe et al.
patent: 4806004 (1989-02-01), Wayland
patent: 4958082 (1990-09-01), Makinouchi et al.
Hakamata Kazuo
Kimura Toshihito
Davenport Teresa
Fuji Photo Film Co. , Ltd.
Nelms David C.
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