US PATENT SUBCLASS 359 / 432
.~ Variable magnification

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

362  DF  COMPOUND LENS SYSTEM {8}
432.~ Variable magnification

DEFINITION

Classification: 359/432

Variable magnification:

(under subclass 362) Subject matter wherein the compound lens system continuously varies the size of a terminal image while the object distance remains constant.

(1) Note. Other subclasses in this class indented under

subclass 407, Binocular, and titled "Spacing of optical elements axially adjustable" may include subject matter related to variable magnification.

SEE OR SEARCH THIS CLASS, SUBCLASS:

380, for variable magnification in microscopes.

422, for variable magnification in telescopes.