US PATENT SUBCLASS 359 / 356
.~.~ Infrared lens

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

350  DF  HAVING SIGNIFICANT INFRARED OR ULTRAVIOLET PROPERTY {8}
355  DF  .~ Lens, lens system or component {1}
356.~.~ Infrared lens {1}
357  DF  .~.~.~> Having four or more components

DEFINITION

Classification: 359/356

Infrared lens:

(under subclass 355) Subject matter having significant properties in the infrared area of the electromagnetic spectrum.