US PATENT SUBCLASS 359 / 354
.~ Including continuously variable magnification or focal length (zoom lens, adjustable lens)

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

350  DF  HAVING SIGNIFICANT INFRARED OR ULTRAVIOLET PROPERTY {8}
354.~ Including continuously variable magnification or focal length (zoom lens, adjustable lens)

DEFINITION

Classification: 359/354

Including continuously variable magnification or focal length (zoom lens, adjustable lens):

(under subclass 350) Subject matter wherein the focal point or image magnification of an imaging device or element is continuously or intermittantly changed as desired.

(1) Note. This includes various selected positions of different optical elements to fit the user selected application.

(2) Note. This incudes IR/UV variable elements adjacent to or part of the zoom lens.

(3) Note. This also includes FLIR (Forward Looking Infrared systems).

SEE OR SEARCH THIS CLASS, SUBCLASS:

421, for telescope selectable magnification in a compound lens for the visible portion of the spectrum.

422, for telescope variable magnification in a compound lens for the visible portion of the spectrum.

676+, for zoom lens in the visible portion of the spectrum. 744, for an afocal lens (e.g., Galilean Telescope).