Synchronization apparatus for scanner

Details Synchronization apparatus for scanner Synchronization apparatus for scanner

1984-05-29

1986-10-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237R, 358293, H01J 314

Patent

active

046161325

ABSTRACT:
Apparatus is disclosed for producing clock signals which are used to precisely control the modulation of a first light beam as it is line scanned by a moving mirror. The apparatus employs a second beam of light which is reflected from the moving mirror and is intensity modulated by a grating. A paraboloid mirror receives such intensity modulated second beam and reflects a collimated beam. A lens focuses such collimated beam to form a stationary image on the surface of a detector which produces the clock signals.

REFERENCES:
patent: 3573849 (1971-04-01), Herriot
patent: 3835249 (1974-09-01), Dattilo et al.
patent: 4279472 (1981-07-01), Street
patent: 4429220 (1984-01-01), Noguchi

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