Low loss photoplotter imaging system

Details Low loss photoplotter imaging system Low loss photoplotter imaging system

1987-07-20

1989-10-24

Lee, John D.

350 9624, G02B 632

Patent

active

048757519

ABSTRACT:
A low loss photoplotter imaging system includes a light source having an array of light emitting diodes. A plurality of fiber optic coupling elements are coupled to the LED array and converge to produce a compact high density light source. An aperture plate defining a plurality imaging apertures is interposed between the light source and the medium and is driven by an electric motor to interchange the aperture operative upon the imaging beam. A power zoom lens is utilized to direct and focus the imaging beam upon a photosensitive having a magnification determined in part by the magnification of the zoom lens and close-up lens.

REFERENCES:
patent: 3492058 (1970-01-01), Waldmon
patent: 3584779 (1971-06-01), Kessler et al.
patent: 3603665 (1971-09-01), Goldmark et al.
patent: 3693516 (1972-09-01), Aron et al.
patent: 3729252 (1973-04-01), Nelson
patent: 4511755 (1985-04-01), Mori

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