Method of making photocathodes for image intensifier tubes

Details Method of making photocathodes for image intensifier tubes Method of making photocathodes for image intensifier tubes

1985-12-31

1994-03-29

Blum, Theodore M.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

H01J 3100, H01J 3126

Patent

active

052988317

ABSTRACT:
A method is provided of making a photoemissive cathode including bonding an electron emissive layer to a glass faceplate at an elevated temperature and pressure to form a cathode structure and cooling the cathode structure at a rate which will maintain stress between the electron emissive layer and the faceplate at or below a predetermined level in order to avoid brush marks and crosshatchings during subsequent processing steps. The cathode is cooled from a bonding temperature to room temperature in approximately twenty minutes or less.

REFERENCES:
patent: 3982261 (1976-09-01), Antypas
patent: 4498225 (1985-02-01), Gutierrez et al.

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