Light guide and semiconductor luminaire
AssigneeOSRAM Opto Semiconductors GmbH
InventorChristopher Eichelberger
Life of this patent
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Abstract
In at least one embodiment, the light guide (10) comprises a single-pieced light guide body (1). The light guide body (1) includes a transparent material and a light entrance segment (2) having a first cross-section (11) with a polygonal shape. Furthermore, the light guide body (1) includes a light output segment (4) having a second cross-section (22) with a rotund, round, circular, oval or elliptic shape. A transition segment (3) is arranged adjacent to and between the light entrance segment (2) and the light output segment (4). Along the transition segment (3), the first cross-section (11) in particular continuously changes to the second cross-section (22).
Claims12
A light guide, comprising a single-pieced light guide body, the light guide body includes:
- a transparent material;
- a light entrance segment having a first cross section with a polygonal shape;
- a light output segment having a second cross section with a circular or elliptic shape;
- and
- a transition segment arranged adjacent to and between the light entrance segment and the light output segment,
- wherein the first cross section changes to the second cross section along the transition segment, and
- further comprising a cladding,
- wherein the cladding is in direct contact with the light guide body,
- wherein the cladding comprises a translucent material with a coefficient of reflection of 0.75 or more,
- wherein the cladding completely covers the light guide body in a direction perpendicular to a direction of main light guidance, and
- wherein the cladding has a constant or nearly constant diameter along the direction of main light guidance.
The light guide according to claim, wherein 0.1≦T/L ≦0.8.
Dependencies are inferred from the claim text.