Photocopying – Contact printing – Light boxes
Patent
1976-11-08
1977-09-27
Henry, Jon W.
Photocopying
Contact printing
Light boxes
355 66, 355 51, 250234, G02B 2717, G03B 2770
Patent
active
040507807
ABSTRACT:
An optical system for a scanning apparatus uses a folded optical path with certain mirrors moving, the movement of the mirrors such that the length of the optical path, and thus the magnification, is maintained constant. Either a fixed or movable lens system can be provided. With a fixed lens system there is differential movement of mirrors. With a moving lens system, the lens system and image receiver move in fixed relationship with the scanning mirror.
REFERENCES:
patent: 3346739 (1967-10-01), Jenkner
patent: 3709602 (1973-01-01), Satomi
patent: 3752558 (1973-08-01), Lloyd
patent: 3841753 (1974-10-01), Ogawa
Sun Wei John Shi
Westwood William Dickson
Henry Jon W.
Jelly Sidney T.
Northern Telecom Limited
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