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Proceedings Paper

A Proposed Novel Electro-Optic T. V. Display System
Author(s): C.N. W. Litting; P. Lilley; D. C. Smith
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Paper Abstract

Light from a projector lamp is passed through condenser optics and a polarising beam splitter/ analyser, and illuminates uniformly an electron beam actuated Pockels modulator. The modulator rotates the plane of polarisation of the light which is reflected back to the analyser. The output of the analyser can be projected to a large screen. The electro-optic target consists of an A1203 - ZnS layer structure biased with a d. c. voltage. A charge pattern correspond-ing to a T.V. image is produced at the interface by electron beam induced conductivity in the .A1203 layer. Current gain in the EBIC layer enables low beam currents to be used. By controlling the amount of uv in the light, the electro-optic ZnS is rendered sufficiently conductive for the interface charge to decay in a frame time. Calculations show contrast ratios > 100:1 could be obtained using a 4 cm diameter target and a brightness of 60 ft lamberts could be achieved on a 12ft by 9ft screen, from commercially available arc lamp.

Paper Details

Date Published: 1 June 1973
PDF: 6 pages
Proc. SPIE 0038, Electro-Optics Principles and Applications, (1 June 1973); doi: 10.1117/12.953756
Show Author Affiliations
C.N. W. Litting, University of Manchester (England)
P. Lilley, University of Manchester (England)
D. C. Smith, University of Manchester (England)

Published in SPIE Proceedings Vol. 0038:
Electro-Optics Principles and Applications
John B. DeVelis; Brian J. Thompson, Editor(s)

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