US PATENT SUBCLASS 359 / 217
.~.~.~.~ With facets parallel to rotation axis

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  DF  .~ Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) {6}
212  DF  .~.~ Including reflective type moving element {4}
216  DF  .~.~.~ Having multifaceted rotating element {1}
217.~.~.~.~ With facets parallel to rotation axis {2}
218  DF  .~.~.~.~.~> Having six, seven, or eight facets
219  DF  .~.~.~.~.~> Having five or fewer facets

DEFINITION

Classification: 359/217

With facets parallel to rotation axis:

(under subclass 216) Subject matter wherein the faces or sides of the reflective element are parallel to the axis of rotation.