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Proceedings Paper

Laser Printing With The Linear TIR Spatial Light Modulator
Author(s): Robert A. Sprague; William D. Turner; David L. Hecht; Richard V. Johnson
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Paper Abstract

A linear spatial light modulator has been developed for laser printing. It provides capability for parallel modulation of several thousand points across a line of illumination, which is then imaged onto a photosensitive medium. The spatial light modulator, which has been described previously, utilizes a VLSI silicon chip containing addressing electronics, drive transistors, and a series of metal lines. This chip is pressed against a single crystal piece of lithium niobate, so that flinging fields created by voltage differences between metal lines are proximity coupled into the crystal and generate locally controllable changes in the index of refraction. The device is read out in total internal reflection off the proximity coupling interface, with schlieren readout imaging optics used to convert the phase modulation of the wavefront to a modulated line image. This paper will review the basic device concept, describe some of the device design and operating parameters, discuss printer application considerations, and show results from a breadboard level printer.

Paper Details

Date Published: 26 October 1983
PDF: 6 pages
Proc. SPIE 0396, Advances in Laser Scanning and Recording, (26 October 1983); doi: 10.1117/12.935249
Show Author Affiliations
Robert A. Sprague, Xerox Corporation (United States)
William D. Turner, Xerox Corporation (United States)
David L. Hecht, Xerox Corporation (United States)
Richard V. Johnson, Xerox Corporation (United States)


Published in SPIE Proceedings Vol. 0396:
Advances in Laser Scanning and Recording
Leo Beiser, Editor(s)

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