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US 2011/0032729 A1Published application
Orthogonally separable light bar
AssigneeIllumitex, Inc.
InventorsDung T. Duong, Hyunchul Ko
Life of this patent
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Abstract
Embodiments described herein provide optical systems in which phosphors are used to down-convert light. In general, optical systems can include a light guide configured to propagate light from an entrance face to a distal end along a propagation axis using total internal reflection. A phosphor layer can be disposed orthogonal to the entrance surface of the light guide.
Claims20
An optical system comprising:
- a light guide having a plurality of surfaces, wherein the light guide is configured to propagate light through total internal reflection from the entrance surface to a distal end of the light guide along a primary propagation axis;
- a light source optically coupled to an entrance surface of the light guide;
- and
- a phosphor layer disposed on the light guide orthogonal to the entrance surface.
1 more element
A method for an optical system comprising:
- providing a light guide having a plurality of surfaces and configured to propagate light through total internal reflection from an entrance surface to a distal end of the light guide along a primary propagation axis;
- disposing a phosphor layer on the light guide orthogonal to the entrance surface;
- and
- optically coupling a light source to the entrance surface of the light guide.
1 more element
Dependencies are inferred from the claim text.