Abstract

The making of concentric shells generally involves grinding away much valuable material—and time—to achieve a steep concave surface. Why not saw the spherical pieces? Because saws cannot section out a sphere? But they can, and here’s how….

This technique is especially interesting to those making large concentric shells and should lead to the saving of money and the conservation of valuable raw material.

© 1971 Optical Society of America

Glass Spheres in the Making

Frank Cooke
Appl. Opt. 10(3) 702-703 (1971)

Making Precision Beam-Splitters

A. S. DeVany and Frank Cooke
Appl. Opt. 10(11) 2586-2587 (1971)

Generation of a spherical mirror in aluminum

Appl. Opt. 18(23) 3878-3879 (1979)

Making a Long Concave Cylinder Mirror

Frank Cooke
Appl. Opt. 10(5) 1202-1204 (1971)

Making accurate small off-axis parabolas …

Frank Cooke
Appl. Opt. 10(2) 448-449 (1971)