US PATENT SUBCLASS 359 / 581
.~.~ By transmissive coating on lens

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

577  DF  LIGHT INTERFERENCE {2}
580  DF  .~ Produced by coating or lamina {7}
581.~.~ By transmissive coating on lens

DEFINITION

Classification: 359/581

By transmissive coating on lens:

(under subclass 580) Subject matter wherein a lens is provided with a transparent reflection-reducing coating on surface of air-contacting refracting portions.

SEE OR SEARCH THIS CLASS, SUBCLASS:

642+, for lenses generally, and subclass 726 for lenses coated with reflecting ele-ment.

SEE OR SEARCH CLASS

65, Glass Manufacturing,

30.1+, and 31 for processes of applying such a coating or surface to a glass preform.