US PATENT SUBCLASS 33 / 507
.~ Lens
Current as of: June, 1999
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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.