Message character image projection control system

Details Message character image projection control system Message character image projection control system

1982-03-17

1983-06-28

Caldwell, Sr., John W.

Communications: electrical

Visual indication

Movable

340783, 350358, G08B 536

Patent

active

043908756

ABSTRACT:
Message character image projection control system utilizing a matrix array of individually shaped light forming window means, a source of light for illuminating the array of windows and acousto-optic light reflector means for controlling an optical path relationship between individual window means in the matrix and a common optical axis of the system.

REFERENCES:
patent: 3611891 (1971-10-01), McNaney
patent: 3636837 (1972-01-01), McNaney
patent: 3653067 (1972-03-01), Anderson et al.
patent: 4164717 (1979-08-01), Blazey
patent: 4179689 (1979-12-01), McNaney
patent: 4251806 (1981-02-01), McNaney
patent: 4280755 (1981-07-01), McNaney

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