Illumination device with adjustable curved reflector portions
First Claim
1. A reflector assembly for a variable-beam illumination device comprising:
- an array of light sources that produces an output of light;
a first discrete concave reflector segment at least partially surrounding the array of light sources and shaped to produce a first light distribution, the first light distribution having a wide-angle light distribution from the output;
a second discrete concave reflector segment at least partially surrounding the array of light sources and shaped to produce a second light distribution, wherein the second light distribution from the output is narrower than the first light distribution; and
means for selectively activating the array of light sources,wherein at least one of the first and second concave reflector segments is movable relative to the other one of the first and second concave reflector segments between a first position and a second position, such that;
(a) the outer light sources of the array of light sources are selectively activated by the means and a portion of the output is intercepted and reflected to effectuate the first light distribution when the at least one of the first and second concave reflector segments is in the first position, and(b) the inner light sources of the array of light sources are selectively activated by the means and a portion of the output is intercepted and reflected to effectuate the second light distribution when the at least one of the first and second reflector segments is in the second position.
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Accused Products
Abstract
A device has a light source, a first reflector segment having a first parabolic cross section to produce a first light distribution having a wide-angle light distribution, and a second reflector segment having a second parabolic cross section to produce a second light distribution that is narrower than the first light distribution. At least one of the first and second segments is movable between first and second positions such that a portion of the light emitted by the light source is reflected to form the first light distribution when the at least one of the first and second segments is in the first position, and a portion of the light is reflected to form the second light distribution when the at least one of the first and second segments is in the second position.
57 Citations
18 Claims
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1. A reflector assembly for a variable-beam illumination device comprising:
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an array of light sources that produces an output of light; a first discrete concave reflector segment at least partially surrounding the array of light sources and shaped to produce a first light distribution, the first light distribution having a wide-angle light distribution from the output; a second discrete concave reflector segment at least partially surrounding the array of light sources and shaped to produce a second light distribution, wherein the second light distribution from the output is narrower than the first light distribution; and means for selectively activating the array of light sources, wherein at least one of the first and second concave reflector segments is movable relative to the other one of the first and second concave reflector segments between a first position and a second position, such that; (a) the outer light sources of the array of light sources are selectively activated by the means and a portion of the output is intercepted and reflected to effectuate the first light distribution when the at least one of the first and second concave reflector segments is in the first position, and (b) the inner light sources of the array of light sources are selectively activated by the means and a portion of the output is intercepted and reflected to effectuate the second light distribution when the at least one of the first and second reflector segments is in the second position. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A variable-beam illumination device comprising:
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an array of light sources that produces an output of light; a first discrete reflector segment at least partially surrounding the array of light sources, the first discrete reflector segment having a first parabolic cross section and shaped to produce a first light distribution having a wide-angle light distribution from at least a portion of the output; a second discrete reflector segment at least partially surrounding the array of light sources, the second discrete reflector segment having a second parabolic cross section and shaped to produce a second light distribution from at least a portion of the output, the second light distribution from the second discrete reflector segment being narrower than the light distribution from the first discrete reflector segment; and means for selectively activating the array of light sources, wherein at least one of the first and second segments is movable relative to the other one of the first and second segments between a first position and a second position, such that; (a) the outer light sources of the array of light sources are selectively activated by the means and a portion of the output is intercepted and reflected to effectuate the first light distribution when the at least one of the first and second segments is in the first position, and (b) the inner light sources of the array of light sources are selectively activated by the means and a portion of the output is intercepted and reflected to effectuate the second light distribution when the at least one of the first and second segments is in the second position. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method of variably illuminating an object, the method comprising:
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outputting light from an array of light sources; producing a first light distribution having a wide-angle light distribution from the light output using a first discrete concave reflector segment, wherein the wide-angle light distribution is not collimated; producing a second light distribution from the light output using a second discrete concave reflector segment, the second light distribution being narrower than the first light distribution; moving at least one of the first discrete concave reflector segment and the second discrete concave reflector segment between a first position and a second position; and selectively activating the array of light sources, wherein (a) the outer light sources of the array of light sources are activated, and a portion of the output is intercepted and reflected to effectuate the first distribution, when the at least one of the first and second reflector segments is in the first position, and (b) the inner light sources of the array of light sources are activated, and a portion of the output is intercepted and reflected to effectuate the second light distribution, when the at least one of the first and second reflector segments is in the second position. - View Dependent Claims (16, 17, 18)
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Specification