Device for parallex-free centering of a blank for a glass lens f

Details Device for parallex-free centering of a blank for a glass lens f Device for parallex-free centering of a blank for a glass lens f

1994-08-12

1996-03-12

Kisliuk, Bruce M.

Abrading

Accessory

Work-mounting device

451390, 451 42, B24B 13005

Patent

active

054982006

ABSTRACT:
A device for parallax-free centering of an eyeglass lens blank and for application of markings and optionally a holder before insertion of the eyeglass lens blank into an eyeglass edge grinding machine has a stage for the eyeglass lens blank. An electric drive is connected to the stage which is moveable in an upward and downward direction by the electric drive. A depressor for holding the eyeglass lens blank on the stage is provided. The depressor allows for lateral movement of the eyeglass lens blank in a support plane of the stage. The depressor is moveable in the upward and downward direction. A first proximity detector is operatively connected with the electric drive and with the depressor for positioning at a predetermined height the eyeglass lens blank held between depressor and stage. A light divider is positioned between the eyeglass lens blank and the eye of an operator of the device for superimposing a scale; and a template image or an eyeglass frame opening image onto the image of the eyeglass lens blank.

REFERENCES:
patent: 1984121 (1934-12-01), Drescher
patent: 4543752 (1985-10-01), Kotting
patent: 4737918 (1988-04-01), Langlois et al.
patent: 4936056 (1990-06-01), Gaudel et al.
patent: 5070657 (1991-12-01), Brule et al.
patent: 5209026 (1995-05-01), Cariou et al.
patent: 5425665 (1995-06-01), Kennedy

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