Optical wave guide
A lighting apparatus ( 10 ) includes a wave guide ( 14 ) formed from a translucent material. The wave guide has a top surface ( 30 ), a bottom surface ( 32 ) that has a pre-defined curvature, and at least one side surface ( 34 ) that receives light ( 40 ) injected therein. A plurality of microstruct...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A lighting apparatus (
10
) includes a wave guide (
14
) formed from a translucent material. The wave guide has a top surface (
30
), a bottom surface (
32
) that has a pre-defined curvature, and at least one side surface (
34
) that receives light (
40
) injected therein. A plurality of microstructures (
36
) are arranged on selected areas of the bottom surface (
32
) of the wave guide (
14
). The plurality of microstructures (
36
) cooperates with the pre-defined curvature of the bottom surface (
32
) to scatter at least a portion of the light (
40
) injected into the at least one side surface (
34
). The scattered light (
42
) exits the wave guide (
14
) through the top surface (
30
). At least one light emitting diode (
16
) injects light (
40
) into the at least one side surface (
34
) of the wave guide (
14
). The scattered light (
42
) that exits the wave guide (
14
) forms at least one symbol viewable by an associated observer. |
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