US PATENT SUBCLASS 33 / 507
.~ Lens


Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

501  DF  GAUGE {61}
507.~ Lens


DEFINITION

Classification: 33/507

Lens:

(under subclass 501) Subject matter wherein the contact

member contacts a lens.

(1) Note. A lens includes a lens blank.

(2) Note. Gauging (a) curvature, or length and width, or locating (b) a point, (c) the mechanical axis or (d) the optical axis of a lens, is classifiable here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

28, for lens scribers.

520, for center, point between centers or center line location.

SEE OR SEARCH CLASS 356, Optics: Measuring and Testing

127, for optical center cylinder axis or prism measuring or determining.

451, Abrading,

42+, for a method of grinding a lens and subclasses 246+ for an abrading machine having a rotary, cylindrical abrading tool adapted to engage a rotating workpiece, such as a lens.