Apparatus for the display of illuminated translucent documents
First Claim
1. In a front lit illuminated panel for directional illumination of a translucent display, comprising:
- at least one light source emitting a light flux;
a plate of transparent material including striations and having light re-emitting elements, said light re-emitting elements re-emitting flux meeting said elements from said at least one light source and exiting from said plate of transparent material to light said display;
said light re-emitting elements in said plate being arranged and/or distributed in such a way that their light re-emitting power increases as the distance away from the light source increases; and
said plate having on at least one of its front and back surfaces striations whose depth increases in a direction as the distance away from said light source increases; and
whereinthe improvement consists essentially in that said striations are individual and distributed along lines parallel to a lighted field of the plate and spaced from one another on each of said lines, the length (l) of said striations along the respective lines increasing and the space (a) along the same line between said individual striations decreasing in the direction away from a viewer observing said display.
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Accused Products
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.
162 Citations
18 Claims
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1. In a front lit illuminated panel for directional illumination of a translucent display, comprising:
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at least one light source emitting a light flux; a plate of transparent material including striations and having light re-emitting elements, said light re-emitting elements re-emitting flux meeting said elements from said at least one light source and exiting from said plate of transparent material to light said display; said light re-emitting elements in said plate being arranged and/or distributed in such a way that their light re-emitting power increases as the distance away from the light source increases; and said plate having on at least one of its front and back surfaces striations whose depth increases in a direction as the distance away from said light source increases; and
whereinthe improvement consists essentially in that said striations are individual and distributed along lines parallel to a lighted field of the plate and spaced from one another on each of said lines, the length (l) of said striations along the respective lines increasing and the space (a) along the same line between said individual striations decreasing in the direction away from a viewer observing said display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A front lit illuminated panel for directional illumination of a translucent display, comprising:
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at least one light source; a plate of transparent material having light re-emitting elements; said light source emitting flux meeting said re-emitting elements and exiting from said plate to light said translucent display through said plate of transparent material; said light re-emitting elements being distributed in the plate such that their light re-emitting power increases as the distance away from the light source increases; said plate having, on at least one of its front and back surfaces, striations whose depth increases in a direction as the distance away from said light source increases; and said striations are individual and are distributed along lines parallel to the lighted field of the plate and spaced from one another on each of said lines, the length (l) of said striations along the respective lines increasing and the space (a) along the same line between said individual striations decreasing in the direction away from a viewer observing said display. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification