Method and apparatus for blocking and deblocking a lens

Details Method and apparatus for blocking and deblocking a lens Method and apparatus for blocking and deblocking a lens

2005-03-08

2005-03-08

Thomas, David B. (Department: 3723)

Abrading

Work holder

Clamp

C451S042000, C451S053000

Reexamination Certificate

active

06863602

ABSTRACT:
Disclosed herein is a block including a block base configured to support a lens for surfacing or finishing, a cover retained to the base, and a formable material disposed between the base and the cover. Further disclosed herein is a system for blocking a lens including a block base configured to support a lens for processing, a cover retained to the base, a formable material disposed between the base and the cover, and a receptacle configured to receive the base to heat and cool the base. Further disclosed herein is a method for blocking a lens includes heating a block to render the formable material pliable, applying a lens to the block, and cooling the block to render the material non-pliable. A method for blocking a lens includes rendering a formable material of a block pliable, deforming the material with a lens, rendering the formable material non-pliable and causing a vacuum between the formable material and the lens to hold the lens to the block. A method for deblocking a lens includes heating a formable material of a block and removing the lens from the block.

REFERENCES:
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patent: 5380387 (1995-01-01), Salamon et al.
patent: 5421771 (1995-06-01), Wardle
patent: 5695393 (1997-12-01), Granziera
patent: 5792537 (1998-08-01), Ohlin, Jr.
patent: 6012965 (2000-01-01), Savoie
patent: 6036313 (2000-03-01), Benjamin et al.
patent: 6110016 (2000-08-01), Coleman et al.
patent: 6126528 (2000-10-01), Sedlock
patent: 6586499 (2003-07-01), Bonafini et al.

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