System for determining the optimal ground depth of an ophthalmic

Details System for determining the optimal ground depth of an ophthalmic System for determining the optimal ground depth of an ophthalmic

1982-09-13

1985-06-18

Smith, Jerry

Boots, shoes, and leggings

364525, 51284E, 5116572, 51124L, 356127, G06F 1546

Patent

active

045244197

ABSTRACT:
The minimum edge thickness boundary of an ophthalmic lens is mathematically projected onto a plane containing a scaled image of the spectacle frame while the ground depth of the lens is dynamically varied to obtain circumscription with the image. Optimal tool settings are then determined which will result in a ground prescription lens having minimum overall thickness.

REFERENCES:
patent: 3619617 (1971-11-01), Kolb
patent: 3665659 (1972-05-01), Kotting et al.
patent: 3786600 (1974-01-01), Bloxsom
patent: 3917391 (1975-11-01), Padula et al.

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