US PATENT SUBCLASS 359 / 757
.~.~.~ 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}
756  DF  .~.~ Six components {2}
757.~.~.~ First component positive {2}
758  DF  .~.~.~.~> + - + + - + Arrangement
759  DF  .~.~.~.~> First two components positive {1}

DEFINITION

Classification: 359/757

First component positive:

(under subclass 756) 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 component 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).

764+, for a multiple component lens having five components wherein the first componset is positive (i.e., convergent).

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

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