Exposure device

Details Exposure device Exposure device

1997-02-18

1999-03-02

Mathews, Alan A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 66, 355 67, G03B 2772

Patent

active

058778470

ABSTRACT:
The present invention is an exposure device which comprises: a lens by which an image of an original is formed on a photosensitive material and of which an optical axis is disposed at a position shifted from the center of the original toward an outer peripheral side of the original; an illuminating device for illuminating the original; and a light shading device disposed in the vicinity of the lens so that at least a portion, in proximity to the optical axis of the lens, of an effective luminous flux which is made incident on or emitted from the lens, is shaded.

REFERENCES:
patent: 3469916 (1969-09-01), Sloan
patent: 4380390 (1983-04-01), Tateoka et al.
patent: 4451143 (1984-05-01), Goodman

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