Scratch suppressing illumination system for photographic printer

Details Scratch suppressing illumination system for photographic printer Scratch suppressing illumination system for photographic printer

1981-05-21

1984-01-24

Wintercorn, Richard A.

Photocopying

Including fiber optics

350 9628, G03B 2700

Patent

active

044272839

ABSTRACT:
An illumination system for a photographic printer having a printer lens and a film gate, includes a light source for producing a beam of light directed toward the film gate, reflecting means disposed between the light source and film gate for intercepting peripheral portions of the beam and redirecting the peripheral portions toward the film gate, so that the light emerging from the reflecting means has a characteristic angular spread of between about .+-.35.degree. and .+-.65.degree., and means for conditioning the light emerging from the reflecting means such that the image produced by the printing lens is substantially uniformly illuminated, and such that the angular spread of the light is not substantially increased, thereby providing a relatively highly efficient scratch suppressing illumination system.

REFERENCES:
patent: 2604005 (1952-07-01), Hahn
patent: 3217594 (1965-11-01), Simmon

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