Light emitting decorative panels
First Claim
1. A light emitting panel comprising:
- a transparent sheet having first and second surfaces;
an LED light source of light disposed to couple light into an edge of the sheet at a predetermined location on the sheet;
a pattern in the first surface of the sheet to emit light from the second surface of the sheet;
the pattern being defined by depressions in the first surface of the sheet having a first surface of each depression angled with respect to the first surface of the sheet to intercept some light passing through the sheet from the light source and reflecting that light out the second surface of the sheet to illuminate the pattern;
the first surface of each depression defining the pattern being defined by adjacent depression segments, each depression segment having a substantially flat first surface, the top edge of each depression segment at a junction with the first surface of the sheet defining substantially straight lines and angled with respect to the top edge of adjacent depression segments;
each depression having a depth dependent on the combination of;
the distance of each depression from the source of light; and
the number of depressions between the respective depression and the source of light; and
the depth of each depression in the first decorative pattern or first decorative pattern part being selected to avoid an apparent shadow in the respective first decorative pattern or first decorative pattern part because of a second decorative pattern or decorative pattern part between the first decorative pattern or decorative pattern part and the light source.
2 Assignments
0 Petitions
Accused Products
Abstract
Light emitting decorative panels using a light source at the edge thereof that may have a desired uniformity of light emission from a pattern thereon, and which are not subject to local shadows (shading) in a pattern part from patterns or pattern parts between the respective pattern or pattern part and the light source. The elimination of shading is achieved by the depressions of a given geometry disposed in an arc having a center at the light source, and sizes each depression or arc segment of a depression in being chosen accordance with 1), the distance of the respective depression or depression segment from the source of light, and 2), the number of depressions between the respective depression and the source of light, with a second order correction for the position of depressions between the respective depression and the source of light.
39 Citations
27 Claims
-
1. A light emitting panel comprising:
-
a transparent sheet having first and second surfaces;
an LED light source of light disposed to couple light into an edge of the sheet at a predetermined location on the sheet;
a pattern in the first surface of the sheet to emit light from the second surface of the sheet;
the pattern being defined by depressions in the first surface of the sheet having a first surface of each depression angled with respect to the first surface of the sheet to intercept some light passing through the sheet from the light source and reflecting that light out the second surface of the sheet to illuminate the pattern;
the first surface of each depression defining the pattern being defined by adjacent depression segments, each depression segment having a substantially flat first surface, the top edge of each depression segment at a junction with the first surface of the sheet defining substantially straight lines and angled with respect to the top edge of adjacent depression segments;
each depression having a depth dependent on the combination of;
the distance of each depression from the source of light; andthe number of depressions between the respective depression and the source of light; and
the depth of each depression in the first decorative pattern or first decorative pattern part being selected to avoid an apparent shadow in the respective first decorative pattern or first decorative pattern part because of a second decorative pattern or decorative pattern part between the first decorative pattern or decorative pattern part and the light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A light emitting panel comprising:
-
a transparent sheet having first and second surfaces; an LED source of light disposed to couple light into an edge of the sheet at a predetermined location on the sheet; a pattern in the first surface of the sheet to emit light from the second surface of the sheet; the pattern being defined by depressions in the first surface of the sheet having a first surface of each depression to intercept some light passing through the sheet from the light source and reflecting that light out the second surface of the sheet to illuminate the pattern; the first surface of each depression defining the pattern being defined by adjacent depression segments each angled approximately 45 degrees with respect to the first surface of the sheet, each depression segment having a random length along the respective depression and having a substantially flat and rough first surface, the top edge of each depression segment at a junction with the first surface of the sheet defining substantially straight lines that are randomly angled with respect to the top edge of adjacent depression segments; each depression having a depth dependent on the combination of; the distance of each depression from the source of light; and the number of depressions between the respective depression and the source of light; and the depth of each depression in the first decorative pattern or first decorative pattern part being selected to avoid an apparent shadow in the respective first decorative pattern or first decorative pattern part because of a second decorative pattern or decorative pattern part between the first decorative pattern or decorative pattern part and the light source. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A light emitting panel comprising:
-
a transparent sheet having first and second surfaces; an LED light source disposed to couple light into an edge of the sheet at a predetermined location on the sheet; a pattern in the first surface of the sheet to emit light from the second surface of the sheet; the pattern being defined by depressions in the first surface of the sheet having a first surface of each depression to intercept some light passing through the sheet from the light source and reflecting that light out the second surface of the sheet to illuminate the pattern; the depressions being in first and second sets of arc segments, the first set of arc segments having a first center and the second set of arc segments having a second center, the first and second sets of arc segments overlapping each other, the light source being between the first and second centers; the depth of each depression in the first decorative pattern or first decorative pattern part being selected to avoid an apparent shadow in the respective first decorative pattern or first decorative pattern part because of a second decorative pattern or decorative pattern part between the first decorative pattern or decorative pattern part and the light source, and the first surface of each depression defining the pattern being angled approximately 45 degrees with respect to the first surface of the sheet. - View Dependent Claims (24, 25, 26, 27)
-
Specification