US PATENT SUBCLASS 359 / 693
.~.~.~ With macro-type focusing

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

642  DF  LENS {32}
676  DF  .~ With variable magnification (e.g., zoom type ) {6}
683  DF  .~.~ With mechanical compensation {6}
693.~.~.~ With macro-type focusing

DEFINITION

Classification: 359/693

With macro-type focusing:

(under subclass 683) Subject matter wherein the mechanical

compensation permits focusing at very close object distances without loss of definition and without the need for front or rear attachments.