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US 9,958,588 B2Granted
Light guide for display light enhancement
AssigneeDell Products L.P.
InventorsStefan Peana, Mark Andrew Schwager, Asim M. Siddiqui
Life of this patent
Estimating the term…
Abstract
A display in a portable information handling system may have a narrow or no border. A light guide for display light enhancement used to illuminate the display may be formed with concave indentations at a first face that receives light from a light source, such as a string of light emitting diodes. The concave indentations may improve the homogeneity of light transmitted by the light guide. The light guide may further have a light diffusive surface treatment at the first face.
Claims20
A light guide for portable information handling systems, comprising:
- a first face for receiving light from a plurality of light sources, wherein the first face is formed with at least one concave indentation with respect to the light sources;
- a second face opposing the first face;
- a reflector bonded to the second face to reflect the light back into the light guide;
- and
- a third face corresponding to a display surface, wherein the light exits the third face to illuminate the display surface.
2 more elements
An information handling system comprising:
- a display included in the information handling system;
- and
- a light guide for illuminating the display, the light guide further comprising:
- a first face for receiving light from a plurality of light sources;
- a second face opposing the first face, wherein the second face is formed with a concave protrusion with respect to the light sources, wherein the concave protrusion extends laterally over the second face;
- a concave reflector bonded to the concave protrusion to reflect the light back into the light guide;
- and
- a third face corresponding to the display, wherein the light exits the third face to illuminate the display.
5 more elements
Dependencies are inferred from the claim text.