Automatic gun mount alignment apparatus

Details Automatic gun mount alignment apparatus Automatic gun mount alignment apparatus

1983-07-12

1985-12-17

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Apparatus

Assembly means

250204, H01J 918

Patent

active

045590192

ABSTRACT:
Apparatus for automatically aligning a tri-beam electron gun mount, which mount includes an electrode having an optical passage therethrough, relative to the phosphor pattern in a CRT bulb destined to receive the mount. The gun mount is rotatably supported, with its geometric axis coincident with an extension of the bulb's neck axis, for presentation to a driver. A laser beam is split to form a pair of beams which are directed along paths which intersect within the optical passage and are thereafter individually intercepted by an assigned light detector. The detectors develop signals which are applied to an error detector comprising a differential amplifier. A central signal derived from the amplifier energizes the gun mount driver which rotates the gun mount until identical signals are outputed by the light detectors. With the gun mount then optimally oriented, it is locked preparatory to its insertion in the CRT bulb.

REFERENCES:
patent: 3612881 (1971-10-01), King
patent: 4105339 (1978-08-01), Wirtanen
patent: 4148117 (1979-04-01), Braeke et al.
patent: 4189814 (1980-02-01), Ottos

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