Card – picture – or sign exhibiting – Display with special effects – Electromotor operated
Patent
1979-03-05
1981-02-10
Pitrelli, John F.
Card, picture, or sign exhibiting
Display with special effects
Electromotor operated
40436, 40444, G09F 1330
Patent
active
042493315
ABSTRACT:
An attractive dynamic star burst display is provided in which a plurality of light sources preferably of different colors, are mounted behind a translucent enclosure, and relative movement is provided for effectively changing the distances between the light sources and the regions of the surface where their various rays are being viewed. The translucent enclosure includes a layer of intrinsically transparent material having a smooth inner surface facing the light sources and an embossed outer surface having a multifaceted pyramidal prism system for directing rays of light from the light sources in dynamically changing light patterns in accordance with the optical and geometric relationship involved, including the position of the viewer's eyes, the multi-facets on the embossed outer surface and the effective distance between the respective light sources and the respective regions on the embossed outer surface where the rays of light are being seen. A protective transparent or translucent layer is shown mounted over the embossed outer surface for protecting it. The translucent enclosure as a whole may take many attractive forms and shapes such as conical, cylindrical, pyramidal or different shaped prisms. A pair of spaced embossed transparent layers may be utilized in the various embodiments for increasing the dynamically changing light images as seen by approximately the square of the number of images that would be produced by one layer alone. An interesting display of light having a profusion of color in various arrays and patterns is produced.
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Pitrelli John F.
Skillington G. Lee
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