Lens periphery processing apparatus, method for obtaining proces

Details Lens periphery processing apparatus, method for obtaining proces Lens periphery processing apparatus, method for obtaining proces

1993-02-01

1994-09-20

Rachuba, M.

Abrading

Precision device or process - or with condition responsive...

With feeding of tool or work holder

451256, B24B 4900

Patent

active

053477626

ABSTRACT:
An apparatus and a method for processing lens peripheries which allow lenses to be properly fitted in a frame, i.e., which processes lenses with high dimensional accuracy. For this purpose, the lens periphery processing apparatus and method are designed to comprise an input device for inputting the configuration of lens frame portions of the eyeglasses frame which is a result of three-dimensional measurement, a calculation device for deriving peripheral lengths of the lens frame portions from the three-dimensional lens frame portion configuration inputted by the input device, a tapered edge curve determining device for determining a curve value defined by the locus of the tapered edge of each lens, and a computing device for computing the locus of the tapered edge of each lens which substantially coincides with the peripheral length of the associated lens frame portion which is obtained by the calculation device.

REFERENCES:
patent: 4656590 (1987-04-01), Ace
patent: 4944585 (1990-07-01), Mizuno
patent: 4945684 (1990-08-01), Wada et al.
patent: 5053971 (1991-10-01), Wood et al.
patent: 5144561 (1992-09-01), Soper
patent: 5148637 (1992-09-01), Byron

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