Optical lens blocking method and apparatus

Details Optical lens blocking method and apparatus Optical lens blocking method and apparatus

1977-07-08

1979-01-30

Lazarus, Richard B.

Metal founding

Process

Shaping liquid metal against a forming surface

164332, 425808, B22D 1724, B29D 1100

Patent

active

041367278

ABSTRACT:
An apparatus and method of mounting a lens block on an optical lens blank having predetermined optical and mechanical centers so that the lens block is centered on the blank with respect to the optical center and is provided with recesses aligned on a line through the mechanical center of the lens blank. The apparatus includes a lens blank holder, an optical center alignment device and a lens block forming apparatus having recess-forming projections. The lens blank is placed on the holder and the optical center aligned on the alignment device. The holder is then placed on the lens block forming apparatus such that the recess will be formed along a line through the mechanical center of the blank. Liquid lens block material is then introduced into the forming apparatus and allowed to harden.

REFERENCES:
patent: 3152427 (1964-10-01), Prunier
patent: 3383808 (1968-05-01), Deshayes et al.
patent: 3866667 (1975-02-01), Knight

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