Apparatus for the display of illuminated translucent documents

Details Apparatus for the display of illuminated translucent documents Apparatus for the display of illuminated translucent documents

1987-04-13

1989-03-14

Swiatek, Robert P.

Card, picture, or sign exhibiting

Illuminated sign

Edge illuminated

362 31, G09F 1318

Patent

active

048115070

ABSTRACT:
A device for a front lit illuminated panel for the directional illuminated of a display surface having at least one luminous source emitting a light flux which penetrates into a plate of transparent material and exits after encountering striations whose depth increases as a viewer observing the display moves away from the light source lighting the field of the plate. The individual striations are distributed along lines parallel to the lighted field of the plate, while being spaced from one another on each line. The length of the increased striations along their respective lines increase and the space along the same line, between individual striations, decrease as a viewer observing the display moves away from the light source.

REFERENCES:
patent: 3043947 (1962-07-01), Albinger, Jr.
patent: 3241256 (1966-03-01), Viret et al.
patent: 3328570 (1967-06-01), Balchunas
patent: 4373282 (1983-02-01), Wragg
patent: 4621306 (1986-11-01), Sell

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