US PATENT SUBCLASS 359 / 652
.~ With graded refractive index

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

642  DF  LENS {32}
652.~ With graded refractive index {2}
653  DF  .~.~> Having an axial gradient
654  DF  .~.~> Having a radial gradient {1}

DEFINITION

Classification: 359/652

With graded refractive index:

(under subclass 642) Subject matter wherein a lens has an index of refraction which varies in space.

SEE OR SEARCH CLASS

385, Optical Waveguides,

124, for optical waveguides having a graded refractive index.