Method of making optical prisms

Details Method of making optical prisms Method of making optical prisms

1975-07-10

1976-11-02

Bashore, S. Leon

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 38, 65 61, 350320, C03C 1500, C03C 1900

Patent

active

039894959

ABSTRACT:
Making an optical prism of an enlarged ground and polished insoluble glass preform encased with soluble glass. The glass combination is heated and drawn to the reduced cross-sectional size desired of the prism with the soluble glass protecting the prism preform against deformation by surface tension forces and other damage. The soluble glass is removed after drawing to leave the prism body with true faces and angles.

REFERENCES:
patent: 3455667 (1969-07-01), Snitzer et al.
patent: 3455668 (1969-07-01), Upton
patent: 3879182 (1975-04-01), Strack
patent: 3926601 (1975-12-01), Hicks, Jr.

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