Method for manufacturing a spectacle lens for myopes

Details Method for manufacturing a spectacle lens for myopes Method for manufacturing a spectacle lens for myopes

1985-01-23

1987-02-03

Whitehead, Harold D.

51284R, G02B 304

Patent

active

046405879

ABSTRACT:
There is described a method for manufacturing a spectacle lens for myopes the edge thickness of which may be considered as substantial, which comprises starting with a semi-machined product with a concave hollowing which extends to the edge or substantially to the edge of the lens, milling away about 40 to 51% of the lens edge thickness, and radiusing convexly thereafter the sharp angle between said concave hollowing and the plane-milled portion of the lens which surrounds said concave hollowing.

REFERENCES:
patent: 2846918 (1958-08-01), Miles
patent: 3317640 (1967-05-01), Jones
patent: 3618271 (1971-11-01), Martiros
patent: 3897657 (1975-08-01), Smith
patent: 4561736 (1985-12-01), Furter

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