US PATENT SUBCLASS 359 / 387
.~.~.~ With annular lighting structure

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

362  DF  COMPOUND LENS SYSTEM {8}
368  DF  .~ Microscope {10}
385  DF  .~.~ Illuminator {5}
387.~.~.~ With annular lighting structure

DEFINITION

Classification: 359/387

With annular lighting structure:

(under subclass 385) Subject mattter including means for providing an annulus of light surrounding a dark central portion for illuminating the object.