Optical cell control system
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United States of America Patent
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Jun 9, 1998
Grant Date -
N/A
app pub date -
Oct 28, 1996
filing date -
Apr 29, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A control system for an optical cell (light valve) is provided which comprises a first (oscillator) circuit supplied by a low voltage power source and including a primary winding of an induction coil and a secondary (resonant) circuit which includes the optical cell and a secondary winding of the induction coil. The secondary circuit includes the inductance of the secondary winding and the optical cell, and the induction coil provides a weak coupling between the primary and secondary windings. The resonant circuit provides a large over-voltage coefficient and great stability and the configuration made possible by the invention facilitates a significant reduction in the bulk of the control system.
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