Lens location block

Details Lens location block Lens location block

1991-11-26

1993-06-01

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351168, G02C 702

Patent

active

052164551

ABSTRACT:
A bi-focal or multi-focal lens element or blank of synthetic plastics material is supported by a lens location block releasably molded on to the front face of the lens element or blank, the material of the block being comparatively inexpensive non-metallic material so that the block can be thrown away after the element or blank has been released from the block.

REFERENCES:
patent: 3248460 (1966-04-01), Naujokas

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