Method of making lenses having a spherical face

Details Method of making lenses having a spherical face Method of making lenses having a spherical face

1981-03-23

1983-07-05

Fisher, Richard V.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 315, 65 32, 65 61, 65105, 51284R, C03C 1502, C03C 1900

Patent

active

043916210

ABSTRACT:
A lens is formed of a section of glass clad glass rod ground and polished to a spherical shape of radius of curvature equal to that desired of a face of the lens. Remaining leachable cladding glass is removed leaving the lens with finished spherically curved opposite ends and an adaptability to modification by transaxial cutting and flat face finishing for plano-convex applications.

REFERENCES:
patent: 2980957 (1961-04-01), Hicks, Jr.
patent: 3004368 (1961-10-01), Hicks, Jr.
patent: 3037241 (1962-06-01), Bazinet, Jr. et al.
patent: 3624816 (1971-11-01), Strack et al.
patent: 3653739 (1972-04-01), Strack
patent: 3901718 (1975-08-01), Wu
patent: 3989495 (1976-01-01), Siegmund
patent: 4071343 (1978-11-01), Siegmund
patent: 4231775 (1980-11-01), Siegmund
patent: 4251251 (1981-02-01), Blankenship

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