Apparatus for processing a lens

Details Apparatus for processing a lens Apparatus for processing a lens

2005-06-21

2005-06-21

Morgan, Eileen P. (Department: 3723)

Abrading

Abrading process

Glass or stone abrading

C451S044000, C451S069000, C451S255000, C451S256000

Reexamination Certificate

active

06908367

ABSTRACT:
An apparatus for processing a lens comprising a rotating tool for chamfering used for chamfering a peripheral portion of a spectacle lens, the apparatus comprising: a holding shaft supporting the lens and a lens-holding unit that rotates the holding shaft and displaces the lens towards the finishing unit based on data describing a shape of a lens frame and a rotation angle of the holding shaft; and a means for positioning in an axial direction that displaces the lens in an axial direction of the holding shaft; wherein the rotating tool for chamfering includes a rotating tool having a hemispherical shape, wherein a chamfering angle, or a chamfering amount, is set in accordance with a displacement in the axial direction of the means for positioning in an axial direction and a displacement of the lens-holding unit.

REFERENCES:
patent: 5053971 (1991-10-01), Wood et al.
patent: 5363597 (1994-11-01), Gottschald et al.
patent: 5626511 (1997-05-01), Kennedy et al.
patent: 5803793 (1998-09-01), Mizuno et al.
patent: 6751522 (2004-06-01), Okada et al.
patent: 2002/0026262 (2002-02-01), Takahiro et al.
patent: 1 238 733 (2002-09-01), None
patent: 6047656 (1994-02-01), None
patent: 2001018154 (2001-01-01), None
patent: 2001087922 (2001-04-01), None
patent: 2001 150314 (2001-06-01), None
EPO Communication with Partial European Search Report, completed Aug. 2, 2004.

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