High-efficiency illuminating system and method for multi-image p

Details High-efficiency illuminating system and method for multi-image p High-efficiency illuminating system and method for multi-image p

1988-08-19

1990-01-23

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 77, G03B 2754, G03B 2744

Patent

active

048961876

ABSTRACT:
My negative illuminating system involves the concentrating of light energy from one or more lamps to form a secondary light source of small area, then passing the light from the secondary light source through an optical system that magnifies the light from the small area source to an enlarged area of illumination sufficient in size to cover a photographic negative that is several times larger than the area of the secondary source. The light stream is also confined generally to the objective lens field of the various lens arrays that are individually inserted into the light stream making photographic prints of different sizes.

REFERENCES:
patent: 2135074 (1938-11-01), Grant
patent: 3212396 (1965-10-01), Schwardt et al.
patent: 3488117 (1970-01-01), Weisglass
patent: 3649121 (1972-03-01), Cohen
patent: 3782821 (1974-01-01), Bosman
patent: 3951545 (1976-04-01), Lucht

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