Low loss photoplotter imaging system

摘要

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.