US PATENT SUBCLASS 359 / 743
.~.~.~ Having curvilinear lens

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

642  DF  LENS {32}
741  DF  .~ With multipart element {1}
742  DF  .~.~ Echelon (e.g., Fresnel lens, etc.) {1}
743.~.~.~ Having curvilinear lens

DEFINITION

Classification: 359/743

Having curvilinear lens:

(under subclass 742) Subject matter wherein the general shape of the lens surface is concave or convex on either side or on both sides.