Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-08-22
1999-08-31
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2502011, 250214AG, H01J 4014
Patent
active
059456698
ABSTRACT:
A laser scan microscope irradiates a sample with a laser beam while simultaneously scanning the laser beam over the sample, and processes an optical signal obtained thereby so as to obtain image data. The laser scan microscope is provided with a photoelectric converting unit, a sensitivity adjuster, and a sampling/converting unit. The photoelectric converting unit converts an optical signal from the sample into an electric signal. The sensitivity adjuster adjusts the sensitivity of the photoelectric converter such that an output value of the photoelectric converting unit becomes closer to a predetermined reference value. The sampling/converting unit samples sensitivity information determined for the photoelectric converter, in accordance with a scanning speed, and converts the sampled sensitivity information into a light measurement value used for obtaining the image data.
REFERENCES:
patent: 3714441 (1973-01-01), Kreda
patent: 3927938 (1975-12-01), Seigenji
patent: 4745273 (1988-05-01), Szabo et al.
patent: 5262635 (1993-11-01), Curbelo
patent: 5726438 (1998-03-01), Le Marchand
Photomultiplier Tube; Hamamatsu Photonics Co., Ltd. 1993; Catalog No. TOTH9001J01.
Luu Thanh X.
Olympus Optical Co,. Ltd.
Westin Edward P.
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