US PATENT SUBCLASS 359 / 613
.~ Directional or angular discrimination

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

601  DF  GLARE OR UNWANTED LIGHT REDUCTION {6}
613.~ Directional or angular discrimination

DEFINITION

Classification: 359/613

Directional or angular discrimination:

(under subclass 601) Subject matter wherein light from certain angles is deflected away from imaging light.