US PATENT SUBCLASS 359 / 770
.~.~.~ 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}
763  DF  .~.~ Five components {2}
770.~.~.~ First component negative

DEFINITION

Classification: 359/770

First component negative:

(under subclass 763) 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.

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