US PATENT SUBCLASS 359 / 285
.~.~.~ Acousto-optic

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}
240  DF  .~.~ Changing bulk optical parameter {5}
285.~.~.~ Acousto-optic {2}
286  DF  .~.~.~.~> Amplitude modulation
287  DF  .~.~.~.~> Frequency modulation

DEFINITION

Classification: 359/285

Acousto-optic:

(under subclass 240) Subject matter wherein an ultrasonic wave generated at the surface or within the confines of the light control element sets up conditions in the element which produce a change in the optical parameters (e.g., refractive index) directly controlling the light.