US PATENT SUBCLASS 359 / 764
.~.~.~ First component positive

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}
763  DF  .~.~ Five components {2}
764.~.~.~ First component positive {3}
765  DF  .~.~.~.~> + - - + + Arrangement
766  DF  .~.~.~.~> + - + - + Arrangement
767  DF  .~.~.~.~> First two components positive {2}

DEFINITION

Classification: 359/764

First component positive:

(under subclass 763) Subject matter wherein the 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 a convergent lens.

SEE OR SEARCH THIS CLASS, SUBCLASS:

757+, for a multiple component lens having six components wherein the first com-ponent is positive (i.e., convergent).

759+, for a multiple component lens having six components wherein the first two components are positive (i.e., conver-gent).

767+, for a multiple component lens having five components wherein the first two components are positive (i.e., conver-gent).

772+, for a multiple component lens having four components

wherein the first two components are positive (i.e., conver-gent).