Apparatus for measuring thickness of lens

Details Apparatus for measuring thickness of lens Apparatus for measuring thickness of lens

2008-05-16

2009-12-29

Bennett, G. Bradley (Department: 2841)

Geometrical instruments

Gauge

Lens

C033S783000

Reexamination Certificate

active

07637025

ABSTRACT:
An apparatus for measuring a thickness of a lens includes a plurality of first touch heads, a base, a plurality of second touch heads and a driving mechanism. The first touch heads each has a first curved contact surface for coming into contact with a first surface of the lens. The first curved contact surfaces have different curvatures for being selectively mated with the first surface of the lens. The base is configured for selectively mounting one of the first touch heads thereon. The second touch heads each has a second curved contact surface for coming into contact with a second surface of the lens. The second curved contact surfaces have different curvatures for being selectively mated with the second surface of the lens. The driving mechanism is configured for driving the mounted second touch head to move relative to the mounted first touch head.

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patent: 2007/0193043 (2007-08-01), Katzman

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