Optical cell
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United States of America Patent
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Nov 17, 1998
Grant Date -
N/A
app pub date -
Nov 6, 1996
filing date -
May 20, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved optical cell (light valve) of the type which includes a liquid suspension of particles orientable by an electrical field to vary the amount of luminous transmission is described. The cell comprises two adjacent plates held apart by a spacer to define a space occupied by the suspension. The cell further includes a first opening which passes through the spacer into the space to permit introduction of the suspension into the cell and a second opening which passes through the spacer at or near the furthest possible distance permitted by the configuration of the cell from the first opening, whereby the introduction of the suspension displaces through the second opening any fluid such as air which is initially present in the space.
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