Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1980-06-02
1982-05-11
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356400, 356444, G01N 2186
Patent
active
043295916
ABSTRACT:
A method for detecting samples by comparing outputs corresponding to a carrier portion free from sample with those corresponding to a carrier portion onto which a sample is applied while detecting said outputs with a plural number of sample detectors arranged in the direction perpendicular to the shifting direction of a carrier, selecting a sample detector showing the highest output reduction ratio as the one to be utilized for sample detection and detecting the end edge of a sample as a time at which output of said sample detector changes from a level darker than a preset value to another level brighter than said preset value.
REFERENCES:
patent: 3994593 (1976-11-01), Kato et al.
patent: 4067760 (1978-01-01), Nelson
Fujiwara Toshihide
Kaneko Nobutaka
Nelms David C.
Olympus Optical Co,. Ltd.
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