US PATENT SUBCLASS 359 / 761
.~.~.~ 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}
756  DF  .~.~ Six components {2}
761.~.~.~ First component negative {1}
762  DF  .~.~.~.~> First two components negative

DEFINITION

Classification: 359/761

First component negative:

(under subclass 756) 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:

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

781+, for a multiple component lens having four components wherein the first component is negative.