Projecting optical system for photodrawing machine

Details Projecting optical system for photodrawing machine Projecting optical system for photodrawing machine

1974-10-30

1976-10-05

Gonzales, John

354 5, 354270, 350 17, 350 96R, 350206, G03B 4100

Patent

active

039848450

ABSTRACT:
An optical system of a photodrawing machine for photo-copying apertures onto light sensitive material minimizes undesirable effects of variations in projecting magnification and in illumination of the image forming plane. Exposure control is effected by a diaphragm mechanism which includes an optical fiber.

REFERENCES:
patent: 3464330 (1969-09-01), Lewis
patent: 3535995 (1970-10-01), Ball
patent: 3565524 (1971-02-01), Pabst et al.
patent: 3595147 (1971-07-01), Blattner
patent: 3610119 (1971-10-01), Gerber et al.

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