Light Emitting Panel
First Claim
1. A light emitting panel comprising:
- a polygonal-shaped light guiding medium having a light emitting face, an opposite face and truncated corners,at least one light source associated with each truncated corner of the light guiding medium and configured to couple light into the associated truncated corner anda pattern of features on at least one face of the light guiding medium for promoting emission of light from the light emitting face, said pattern of features being configured such that a variation in emitted light intensity over substantially the entire surface of the light emitting face is less than or equal to about 25%.
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Accused Products
Abstract
A light emitting panel comprises a light guiding medium having at least one light emitting face and a plurality of light sources (LEDs) configured to couple light into an edge of the light guiding medium at four or fewer locations around the edge. A pattern of optical features (discontinuities) is provided on at least one face of the light guiding medium for promoting emission of light from the light emitting face. The pattern of features is configured such as to reduce a variation in emitted light intensity over substantially the entire surface of the light emitting face such that the variation is less than or equal to about 25%. The pattern of features is configured in part in dependence on a light intensity distribution within the light guiding medium and the spacing, size, shape and/or number of features per unit area can depend on distance from each light source.
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Citations
23 Claims
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1. A light emitting panel comprising:
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a polygonal-shaped light guiding medium having a light emitting face, an opposite face and truncated corners, at least one light source associated with each truncated corner of the light guiding medium and configured to couple light into the associated truncated corner and a pattern of features on at least one face of the light guiding medium for promoting emission of light from the light emitting face, said pattern of features being configured such that a variation in emitted light intensity over substantially the entire surface of the light emitting face is less than or equal to about 25%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A light emitting panel comprising:
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a light guiding medium having a light emitting face and an opposite face, a plurality of light sources configured to couple light into an edge of the light guiding medium at four or fewer locations around the edge and a pattern of features on at least one face of the light guiding medium for promoting emission of light from the light emitting face, said pattern of features being configured such that a variation in emitted light intensity over substantially the entire surface of the light emitting face is less than or equal to about 25%. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification