Abrading – Precision device or process - or with condition responsive... – Computer controlled
Patent
1996-08-20
1998-09-15
Eley, Timothy V.
Abrading
Precision device or process - or with condition responsive...
Computer controlled
451 41, B24B 4900, B24B 5100
Patent
active
RE0358983
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 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.
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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
Ban Yukinobu
Kobayashi Masahiko
Obayashi Hirokatu
Shibata Ryoji
Banks Derris H.
Eley Timothy V.
Nidek Co. Ltd.
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