Optical resonant assembly
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United States of America Patent
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May 30, 1989
Grant Date -
N/A
app pub date -
Aug 5, 1986
filing date -
Aug 6, 1985
priority date (Note) -
Expired
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Abstract
An optical resonant assembly which has at least two stable light transmittance values dependent on incident light beams. The assembly consists of a pair of parallel partially transmission mirrors with a photochromic layer placed therebetween which has a refractive index dependent upon the intensity of incident light beams. The parallel mirrors constitute a Fabry-Perot type resonator. The incident light beams have the effect of 'couloring' or 'bleaching' the photochromatic material.
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