US PATENT SUBCLASS 348 / 754-- .~.~.~ Acousto-optic (e.g., Bragg cell, etc.)

US PATENT SUBCLASS 348 / 754
.~.~.~ Acousto-optic (e.g., Bragg cell, etc.)

Current as of: June, 1999
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348 /	HD	TELEVISION

739	DF	VIDEO DISPLAY {13}
744	DF	.~ Projection device {7}
750	DF	.~.~ Plural parallel light modulators {5}
754		.~.~.~ Acousto-optic (e.g., Bragg cell, etc.)

DEFINITION

Classification: 348/754

Acousto-optic (e.g., Bragg cell, etc.):

(under subclass 750) Subject matter wherein the modulator comprises media, the optical property of which is varied by a high frequency mechanical vibration (e.g., ultrasonic or sound wave, etc.).

(1) Note. Bragg cell is an example of a device that changes the intensity of a light beam by the interaction between sound waves and the light in a solid medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

769, for projection type image reproducer using acousto-optical technic to modulate light beam.

SEE OR SEARCH CLASS

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

285+, and 305+ for generic optical modulator using acousto-optical technic for light wave temporal or directional modulation.