1 June 1973 A Proposed Novel Electro-Optic T. V. Display System
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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.
© (1973) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C.N. W. Litting, C.N. W. Litting, P. Lilley, P. Lilley, D. C. Smith, D. C. Smith, } "A Proposed Novel Electro-Optic T. V. Display System", Proc. SPIE 0038, Electro-Optics Principles and Applications, (1 June 1973); doi: 10.1117/12.953756; https://doi.org/10.1117/12.953756
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