Apparatus for centering and blocking an ophthalmic lens disc

Details Apparatus for centering and blocking an ophthalmic lens disc Apparatus for centering and blocking an ophthalmic lens disc

1998-03-23

2000-05-02

Eley, Timothy V.

Abrading

Work holder

Clamp

451390, 451 5, B24B 4106

Patent

active

060566337

ABSTRACT:
The apparatus has: a rocking support and an upper clamping member for blocking the lens disc; a first transparent screen provided with reference lines; an image pick-up which obtains images of the lines and images of the disc; an optical system located between the means and the pick-up; an electronic circuitry for processing the images and the modifications in the reference lines caused by inserting the disc between the lines and the pick-up, building a synthetic image; a digital reader for frame forms, in communication with the circuitry; and a second screen for displaying a synthetic image superimposed on the frame data.

REFERENCES:
patent: 4737918 (1988-04-01), Langlois et al.
patent: 5257198 (1993-10-01), Van Schoyck
patent: 5498200 (1996-03-01), Werner
patent: 5720647 (1998-02-01), Gottschald
patent: 5721644 (1998-02-01), Murray et al.
patent: 5919080 (1999-07-01), Savoie et al.
patent: 6011630 (2000-01-01), Shanbaum et al.

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