US PATENT SUBCLASS 359 / 294
.~.~.~.~ Using photoconductive layer

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

237  DF  OPTICAL MODULATOR {3}
238  DF  .~ Light wave temporal modulation (e.g., frequency, amplitude, etc.) {3}
290  DF  .~.~ By changing physical characteristics (e.g., shape, size or contours) of an optical element {3}
291  DF  .~.~.~ Shape or contour of light control surface altered {3}
294.~.~.~.~ Using photoconductive layer

DEFINITION

Classification: 359/294

Using photoconductive layer:

(under subclass 291) Subject matter which utilizes a layer whose electrical conductivity varies as a function of light incident thereon.