Illumination unit having an LED and image projecting apparatus employing the same
First Claim
Patent Images
1. An illumination unit, comprising:
- a first heat conducting plate; and
a plurality of light source modules emitting a plurality of lights having different colors, each light source module having at least one LED mounted on the first heat conducting plate and at least one corresponding collimator to collimate light emitted from the at least one LED.
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Abstract
An illumination unit includes a first heat conducting plate and a plurality of light source modules to emit a plurality of lights having different colors, each light source module having at least one LED mounted on the first heat conducting plate and at least one corresponding collimator to collimate the lights emitted from the at least one LED.
46 Citations
28 Claims
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1. An illumination unit, comprising:
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a first heat conducting plate; and
a plurality of light source modules emitting a plurality of lights having different colors, each light source module having at least one LED mounted on the first heat conducting plate and at least one corresponding collimator to collimate light emitted from the at least one LED. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An illumination unit, comprising:
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a housing including one or more heat conducting plates; and
a plurality of light source modules disposed in the housing to emit lights having different colors, each light source module comprising at least one collimator including a parabolic reflection surface, a light incident surface facing the parabolic reflection surface, and a light exit surface arranged to cross the parabolic reflection surface and the light incident surface, and at least one corresponding LED to emit light to the light incident surface of the at least one collimator, and the at least one corresponding LED of the light source modules are mounted on the one or more heat conducting plates for cooling.
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13. An illumination unit, comprising:
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a housing having at least one heat conducting plate; and
at least one light emitting module having at least one LED disposed on the at least one heat conducting plate such that heat generating by the at least one LED is dissipated through the at least one heat conducting plate, and at least one collimator corresponding to the at least one LED to receive light in a first direction and collimate the light in a second direction. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An image projecting apparatus, comprising:
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an illumination unit to sequentially emit a plurality of lights having different colors, the illumination unit comprising;
a first heat conducting plate, and a plurality of light source modules to emit the plurality of lights having the different colors, each light source module having at least one LED mounted on the first heat conducting plate and at least one corresponding collimator to collimate the light emitted by the at least one LED;
an optical modulation element to sequentially modulate the plurality of lights received from the illumination unit according to image information; and
a projection lens unit to project the modulated light to a screen. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. An image projecting apparatus, comprising:
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an illumination unit to sequentially emit a plurality of lights having different colors, the illumination unit comprising;
a housing including one or more heat conducting plates, and a plurality of light source modules disposed in the housing to emit the plurality of lights having the different colors, each light source module comprising;
at least one collimator including a parabolic reflection surface, a light incident surface facing the parabolic reflection surface, and a light exit surface arranged to cross the parabolic reflection surface and the light incident surface, and at least one corresponding LED mounted on the one or more heat conducting plates for cooling and to emit light to the at least one collimator;
an optical modulation element to sequentially modulate the plurality of lights emitted by the illumination unit according to image information; and
a projection lens unit to project the modulated light to a screen.
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28. An image projecting apparatus, comprising:
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an illumination unit to emit a plurality of lights, the illumination unit comprising;
a housing having at least one heat conducting plate, and at least one light emitting module having at least one LED disposed on the heat conducting plate such that heat generating by the at least one LED is dissipated through the at least one heat conducting plate and at least one collimator corresponding to the at least one LED to receive light in a first direction and collimate the light in a second direction;
an optical modulation unit to modulate the plurality of lights received from the illumination unit to create an image according to data about the image; and
a projection unit to project the image created by the optical modulation unit onto a screen.
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Specification