US PATENT SUBCLASS 359 / 233
.~ With relative motion of two apertured elements

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

227  DF  LIGHT CONTROL BY OPAQUE ELEMENT OR MEDIUM MOVABLE IN OR THROUGH LIGHT PATH {6}
233.~ With relative motion of two apertured elements

DEFINITION

Classification: 359/233

With relative motion of two apertured elements:

(under subclass 227) Subject matter where the light control results from the relative movement of two opaque elements, each containing openings which allow light to pass.