Animated ultraviolet display apparatus

Card – picture – or sign exhibiting – Display with special effects – Selective or intermittent illumination

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Details

2504611, 40443, 40427, 40541, 40465, G09F 1300

Patent

active

047035722

ABSTRACT:
A method and apparatus for animating illuminated signs and displays comprises sequentially illuminating with at least one source of radiant energy of a particular wavelength range at least two planar scenes, or three-dimensional objects, visibly responsive to radiant energy of the particular wavelength range used. Means are provided for shielding a non-selected planar scene or object from illumination during the time a selected planar scene or object is illuminated. In the preferred embodiment, invisible ultraviolet illumination is used to cause a plurality of scene-views to fluoresce visibly in a timed sequence which produces a visual sensation of apparent motion from one scene-view to another of an object depicted by the scene-views. Subjective brightness of scene-views may be enhanced by modulating the illumination of a scene at a perceptibly low frequency.

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patent: 3350803 (1967-11-01), Stockwell
patent: 3438022 (1969-04-01), Teeg
patent: 3499240 (1970-03-01), Cotton et al.
patent: 4016450 (1977-04-01), Balekjian
patent: 4565022 (1986-01-01), Chapin

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