US PATENT SUBCLASS 359 / 417
.~.~.~.~ Spacing of optical elements axially adjustable

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

362  DF  COMPOUND LENS SYSTEM {8}
399  DF  .~ Telescope {12}
407  DF  .~.~ Binocular {4}
412  DF  .~.~.~ With adjustable interocular distance {3}
417.~.~.~.~ Spacing of optical elements axially adjustable

DEFINITION

Classification: 359/417

Spacing of optical elements axially adjustable:

(under subclass 412) Subject matter wherein the axial separation of optical elements, usually lenses, prisms, or

mirrors, may be varied, usually for focusing or varying magnification.

(1) Note. Other subclasses in this class indented under subclass 362, Compound lens system, and titled "Separation of optical elements axially adjustable", "Variable magnification", or including the word "focusing" may include subject matter related to subject matter in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

506, for an adjustable extended spacing structure for optical elements.