US PATENT SUBCLASS 359 / 780
.~.~.~.~ + + + - Arrangement

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

642  DF  LENS {32}
754  DF  .~ Multiple component lenses {6}
771  DF  .~.~ Four components {2}
772  DF  .~.~.~ First component positive {5}
780.~.~.~.~ + + + - Arrangement

DEFINITION

Classification: 359/780

+ + + - Arrangement:

(under subclass 772) Subject matter wherein the plus and minus signs indicate convergent and divergent lens components, respectively.

(1) Note. The arrangement along the optical axis of the lens is identified by the leftmost sign representing the component at the entrant face of the lens, i.e., the direction of light travelling through the lens is the same as the reading arrangement of the subclass title.