US PATENT SUBCLASS 359 / 781
.~.~.~ First component negative

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}
781.~.~.~ First component negative {2}
782  DF  .~.~.~.~> - + + - Arrangement
783  DF  .~.~.~.~> - + + + Arrangement

DEFINITION

Classification: 359/781

First component negative:

(under subclass 771) Subject matter wherein the first component at the entrant face of the lens, i.e., the first component hit by the light as the light begins travelling through the lens, is divergent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

761+, for a multiple component lens having six components wherein the first component is negative.

770, for a multiple component lens having five components wherein the first component is negative.