Projection device

Details Projection device Projection device

1984-06-18

1985-08-20

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 57, G03B 2752

Patent

active

045360847

ABSTRACT:
A device for slit-scanning the surface of an original and projecting the image of the surface of the original onto a light-receiving medium comprises an imaging optical system for forming the image of the surface of the original on the light-receiving medium. The imaging optical system has means which, in a first condition, has equal imaging magnifications in orthogonal directions, i.e., the widthwise direction of the slit and the lengthwise direction of the slit and is for keeping the surface of the original and the light-receiving medium in an optically conjugate relation and which, in a second condition, has different imaging magnifications in orthogonal directions, i.e., the widthwise direction of the slit and the lengthwise direction of the slit and is for keeping the surface of the original and the light-receiving medium in an optically conjugate relation in both of the directions.

REFERENCES:
patent: 3476478 (1969-11-01), Rees
patent: 3873189 (1975-03-01), Whitaker et al.
patent: 4116561 (1978-09-01), Knechtel et al.

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