US PATENT SUBCLASS 359 / 509
.~ Fluid directed across optical element

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

507  DF  PROTECTION FROM MOISTURE OR FOREIGN PARTICLE {6}
509.~ Fluid directed across optical element

DEFINITION

Classification: 359/509

Fluid directed across optical element:

(under subclass 507) Subject matter with structure to direct a fluid across an optical element to blow or wash moisture, or other foreign matter off or to pull such matter off by suction created by the moving fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

508, for apparatus where fluid is directed to vanes, as in a turbine, which rotates the optical element or a shield therefor, such as a transparent disc in fron of an objective lens.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

300.1+, for cleaning machine involving air blast or suction.