Communications: electrical – Visual indication – Movable
Patent
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.
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patent: 4330178 (1982-05-01), McNaney
patent: 4390875 (1983-06-01), McNaney
Caldwell Sr. John W.
Myer Daniel
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