US PATENT SUBCLASS 348 / 767
.~.~.~ Using birefringent or polarizing medium (e.g., Kerr cell, Pockel's cell, etc.)

Current as of: June, 1999
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348 /   HD   TELEVISION

739  DF  VIDEO DISPLAY {13}
744  DF  .~ Projection device {7}
759  DF  .~.~ Single light modulator {5}
767.~.~.~ Using birefringent or polarizing medium (e.g., Kerr cell, Pockel's cell, etc.) {1}
768  DF  .~.~.~.~> Electron beam addressed

DEFINITION

Classification: 348/767

Using birefringent or polarizing medium (e.g., Kerr cell, Pockel's cell, etc.):

(under subclass 759) Subject matter wherein the modulator comprises a medium which, under the influence of a video signal, alters a polarization plane of the source illumination in order to impart the image information.

SEE OR SEARCH THIS CLASS, SUBCLASS:

752, for projection type image reproducer having plural parallel light modulators and subclass 762 for projection type color image reproducer having a single light modulator.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements,

245+, and 315+ for generic optical modulator using an electro-optical technique for light wave, temporal or directional modulation.