Glass manufacturing – Processes – With chemically reactive treatment of glass preform
Patent
1989-07-20
1991-01-08
Lindsay, Robert L.
Glass manufacturing
Processes
With chemically reactive treatment of glass preform
65 314, C03C 2100
Patent
active
049831976
ABSTRACT:
A method for producing waveguides in a glass substrate by ion exchange comprises the method steps of: (a) applying a metal mask (44) on the glass substrate (42), this metal mask (44) leaving open the areas of the waveguides (72,74) to be provided, (b) bringing the glass substrate (42) into contact with molten metallic salt which comprises the ions to be exchanged for the ions of the glass substrate (42), (c) interconnecting by means of electrical conductors surface areas (90,92,94,96) of the metal mask (44) that are separated from each other. The surface areas (90,92,94,96) of the metal mask (44) are electrically conductively interconnected through bond wires (98). Furthermore, the surface areas (90,92,94,96) are electrically conductively connected to a metallic vessel (12) which contains the molten metal.
REFERENCES:
patent: 3836348 (1974-09-01), Sumimoto et al.
patent: 3879110 (1975-04-01), Furukawa
patent: 4285988 (1981-08-01), Ernsberger
patent: 4286052 (1981-08-01), Ernsberger
patent: 4400052 (1989-08-01), Alferness et al.
patent: 4711514 (1987-12-01), Tangonan et al.
Froning Edilbert A. K.
Langner Klaus A.
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