Lens chucking apparatus

Details Lens chucking apparatus Lens chucking apparatus

1980-03-14

1981-07-14

Whitehead, Harold D.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

B24B 1300

Patent

active

042779162

ABSTRACT:
Manufacturing prismatic ophthalmic lenses by setting prism angle at the time of chucking for surface generation. The lens is secured to a block having a spherical edge insertable into a correspondingly internally spherical collet against adjustable stops for setting prism angle. Closing of the collet against the block fixes the lens for surface generation.

REFERENCES:
patent: 1436626 (1922-11-01), Spaander
patent: 2573668 (1951-10-01), Long
patent: 3079736 (1963-05-01), Kratt

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