Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1991-07-22
1993-02-02
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356236, H01J 314, G01J 104
Patent
active
051840138
ABSTRACT:
A laser film scanner scans film as it is translated in a substantially horizonally plane past a diffuse light collector. The light collector includes an elongated housing enclosing a collection cavity having a slot at its top through which light enters. The cavity has diffuse reflective surfaces to diffusely reflect light to a photodetector communicating with the cavity. Positioned opposite the slot is a slanted face from which light entering the cavity is directly reflected. The slanted face avoids streak artifacts in a detected image by permitting dirt particles falling through the slot to roll down to a lower region in the cavity. The slaned face may be formed from a removable insert of low adhesion fluorocarbon material to permit cleaning without disassembling the collector.
REFERENCES:
patent: 2821103 (1958-01-01), Blet
patent: 3327583 (1967-06-01), Vanderschmidt et al.
patent: 3648056 (1972-03-01), Buttweiler et al.
patent: 4568984 (1986-02-01), Juergensen et al.
patent: 4660984 (1987-04-01), MacDonald
patent: 4818861 (1989-04-01), Horiuchi et al.
patent: 4868383 (1989-09-01), Kurtz et al.
Boutet John C.
Kocher Thomas E.
Eastman Kodak Company
Hantis K. P.
Nelms David C.
Noval William F.
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