US PATENT SUBCLASS 359 / 197
.~ Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element)

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

196  DF  DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) {3}
197.~ Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) {6}
198  DF  .~.~> Particular mount or driver for element {2}
201  DF  .~.~> Plural moving scanning elements {2}
204  DF  .~.~> Utilizing plural light beams
205  DF  .~.~> Having particular focusing element to receive scanned light {3}
209  DF  .~.~> Including transmissive type moving element {2}
212  DF  .~.~> Including reflective type moving element {4}

DEFINITION

Classification: 359/197

Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element):

(under subclass 196) Subject matter including an optically reflecting, refracting, or diffracting element as the scanning element whose orientation is changed in a periodic manner.

(1) Note. The motion of reflectors resulting from vehicle vibration, the motion of vehicle wheels, the action of wind, etc., is considered to be of an irregular nature and not periodic within the meaning of this definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

227+, for light interrupting by means of movable elements containing alternating transparent and opaque areas.

SEE OR SEARCH CLASS

348, Television,

195+, for mechanical-optical scanning and subclasses 474+ for a facsimile scanning signal generator.

352, Optics: Motion Pictures, 84, for high speed cameras which use rotating optical elements and subclasses 105+ for motion picture optical rectifiers using rotating or scanning optical elements.

358, Facsimile,

474+, for a facsimile scanning signal generator.