US PATENT SUBCLASS 359 / 772
.~.~.~ First component positive

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

642  DF  LENS {32}
754  DF  .~ Multiple component lenses {6}
771  DF  .~.~ Four components {2}
772.~.~.~ First component positive {5}
773  DF  .~.~.~.~> + - + - Arrangement
774  DF  .~.~.~.~> + - + + Arrangement
775  DF  .~.~.~.~> + - - + Arrangement {1}
779  DF  .~.~.~.~> + + - + Arrangement
780  DF  .~.~.~.~> + + + - Arrangement

DEFINITION

Classification: 359/772

First component positive:

(under subclass 771) 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 component is positive (i.e., convergent).

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