Optical system with reflectors and light pipes
First Claim
Patent Images
1. An optical system comprising:
- at least one light source,at least one light pipe wherein light travels by total internal reflection, andat least one reflector that provides selective extraction of light from said light pipe;
whereinsaid reflector is positioned on an output side of said light pipe,when light is extracted from said light pipe, the light is directed in a direction and pattern determined by a configuration of said reflector, andall light output by said system is directed from said reflector.
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Abstract
An optical system utilizing a light pipe in which light travels by total internal reflection (TIR) accurately controls the light exiting the pipe. The system achieves accurate control of the reflected light by selectively extracting light from a limited area of the light pipe. The configuration of the reflectors used for the selective extraction of the light determines the nature of the output light. The reflectors are preferably located on an output side of the light pipe. All light output by the system is directed by the reflectors.
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Citations
14 Claims
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1. An optical system comprising:
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at least one light source, at least one light pipe wherein light travels by total internal reflection, and at least one reflector that provides selective extraction of light from said light pipe;
whereinsaid reflector is positioned on an output side of said light pipe, when light is extracted from said light pipe, the light is directed in a direction and pattern determined by a configuration of said reflector, and all light output by said system is directed from said reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An optical system comprising:
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at least one light source, at least one light pipe wherein light travels by total internal reflection, and at least one reflector that provides selective extraction of light from said light pipe;
whereinsaid reflector is positioned on an output side of said light pipe, when light is extracted from said light pipe, the light is directed in a direction and pattern determined by a configuration of said reflector, all light output by said system is directed from said reflector, and said light pipe has a reduction in thickness from a first end at which said light source is located. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification