Message character image projection control means

Details Message character image projection control means Message character image projection control means

1983-09-28

1984-06-05

Caldwell, Sr., John W.

Communications: electrical

Visual indication

Movable

340783, 350358, G08B 536

Patent

active

044531605

ABSTRACT:
Message character image projection control means for establishing conditions which simulate the eye glass or contact lens needs of an individual utilizing acousto-optic light refracting principles wherein a pair of acousto-optic cells, positioned in the line of sight of an observer, are controlled in a manner necessary to permit a viewing of the characters with a desired degree of sharpness and clarity.

REFERENCES:
patent: 3611891 (1971-12-01), McNaney
patent: 3636837 (1972-01-01), McNaney
patent: 3653067 (1972-03-01), McNaney
patent: 4158486 (1979-06-01), McNaney
patent: 4179689 (1979-12-01), McNaney
patent: 4240715 (1980-12-01), McNaney
patent: 4251806 (1981-02-01), McNaney
patent: 4280755 (1981-07-01), McNaney
patent: 4330178 (1982-05-01), McNaney
patent: 4390875 (1983-06-01), McNaney

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