Method of manufacturing a camera tube faceplate
AssigneeEnglish Electric Valve Company Limited
InventorPeter B. Banks
Life of this patent
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Abstract
It is desirable to have a camera tube in which the signal plate has a low capacity. This may be achieved by taking a conductor from the signal plate through the glass faceplate. Previous methods of manufacturing a faceplate in which a conductor is embedded have proved unsatisfactory because of difficulty in carrying them out, and distortion and incomplete fusion of glass. A graphite mould having a base and walls contains and supports two glass blocks and a conductor and permits a degree of fluidity of the glass to be obtained which gives good fusion.
Claims9
A method of manufacturing a camera tube glass faceplate in which an electrical conductor is embedded including:
- arranging a first glass member and a second glass member in a mould with a conductor located between them, fusing the members together in the mould, slicing a block formed by fusing together of the glass members to form a plurality of slices, and depositing on each slice a signal plate and a target to form a camera tube faceplate.
A method of making camera tube faceplates comprising:
- positioning an elongate electrical conductor between two flat surfaces of respective glass members;
- fusing the glass in a mold so as to unite the glass members and to form a glass block in which the electrical conductor is embedded;
- slicing the block transversely with respect to the electrical conductor;
- and depositing on each slice a signal plate and a target to form a camera tube faceplate.
Dependencies are inferred from the claim text.