Process for the manufacture of optical bodies with refractive in

Details Process for the manufacture of optical bodies with refractive in Process for the manufacture of optical bodies with refractive in

1976-02-19

1977-12-06

Bashore, S. Leon

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 22, 65 30R, 65 31, 65 60D, 65DIG7, 156663, C03B 2320, C03C 1500

Patent

active

040614867

ABSTRACT:
The invention provides a process for producing a transparent optical-glass body having a linear index of refraction gradient. Particles of optical glass which contain leachble ingredients are pressed to form a self-supporting porous optical glass body. Some of the leachable ingredient is leached from a part of the porous glass, and a different amount is leached from a second part of the porous glass, the index of refraction varying in proportion to the different amounts leached from the glass body. The porous optical glass body is heated to eliminate the pores. Various means for effecting the different amounts of leaching over the length of the glass body are shown.

REFERENCES:
patent: 3149946 (1964-09-01), Elmer
patent: 3485687 (1969-12-01), Chapman
patent: 3647583 (1972-03-01), De Rouw
patent: 3785793 (1974-01-01), Park
patent: 3792987 (1974-02-01), Eaton
patent: 3873344 (1975-03-01), Church et al.
patent: 3938974 (1976-02-01), Macedu et al.

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