Method of producing glass bodies with simultaneous doping and si

Details Method of producing glass bodies with simultaneous doping and si Method of producing glass bodies with simultaneous doping and si

1990-04-10

1992-02-25

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65DIG16, 65900, 65 181, 65 183, 65 301, 65 311, 134 2, 134 2211, 264 60, 385123, C03C 2502

Patent

active

050909800

ABSTRACT:
A method of producing glass bodies having regions with different optical refraction, including a basic body and a coating layer which is sintered onto the basic body, covers the basic body at least partially and is made of glass, which as it is doped, has an index of refraction differing from that of the glass of the basic body. The starting material for producing the cladding on the basis of pulverulent ceramic material is deformed into a self-supporting, unsintered porous green body, is dried and submitted to a cleaning procedure in a heated gas phase. The coating layer to be bonded onto the basic body is melted into glass in a subsequent combined doping/sintering procedure in a gas phase containing the doping agent at a temperature in the range from 1150.degree. to 1500.degree. C. and is sintered onto the basic body.

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