Light device with photonic band pass filter
First Claim
1. A light fixture, comprising:
- a light reflector;
a socket mounted on the reflector and configured to receive a lamp;
a photonic filter mounted on the reflector in a position such that light emitting directly from a lamp coupled to the socket and light from the lamp reflecting from the reflector impinges on a first surface of the filter, the filter configured to transmit therethrough to a second side light of a selected range of wavelengths and to attenuate light of wavelengths outside of the selected range.
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Abstract
A light fixture having a light reflector, a light source mounted on the reflector, and a photonic filter mounted on the reflector in a position such that light emitting directly from the light source and light from the lamp reflecting from the light source impinges on a surface of the filter, the filter configured to transmit therethrough light of a selected range of wavelengths and to attenuate light of wavelengths outside of the selected range. The light source may be a fluorescent lamp, an incandescent lamp, a HID lamp, or an LED, and may be one of a plurality of light sources. The filter may be formed in a semiconductor substrate and may have an LED light source formed in the same substrate and positioned such that the light produced propagates in a direction away from the filter and toward the reflector, where it is reflected back to the filter.
32 Citations
14 Claims
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1. A light fixture, comprising:
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a light reflector;
a socket mounted on the reflector and configured to receive a lamp;
a photonic filter mounted on the reflector in a position such that light emitting directly from a lamp coupled to the socket and light from the lamp reflecting from the reflector impinges on a first surface of the filter, the filter configured to transmit therethrough to a second side light of a selected range of wavelengths and to attenuate light of wavelengths outside of the selected range. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lighting device, comprising:
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a photonic filter configured to pass a selected range of wavelengths and to attenuate light of wavelengths outside of the selected range;
an LED light source positioned on one side of the filter; and
a reflector positioned in spaced-apart relationship with the filter on the one side, to reflect back to the filter light emanating from the light source in a direction away from the filter. - View Dependent Claims (9, 10, 11, 12)
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13. A method, comprising:
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forming, in a semiconductor substrate, a light emitting diode configured to produce light in a visible spectrum and to radiate the light away from a first surface of the substrate;
forming, in the semiconductor substrate;
a photonic band-pass filter configured to admit light through the substrate in a selected range of frequencies and to attenuate light outside the selected range of frequencies; and
mounting a reflector in a spaced-apart relationship with the substrate, such that light produced by the light emitting diode is reflected back to the substrate. - View Dependent Claims (14)
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Specification