Optics: image projectors – Temperature control
Patent
1996-06-28
1997-12-02
Dowling, William
Optics: image projectors
Temperature control
353 61, 362373, G03B 2114
Patent
active
056928211
ABSTRACT:
A thermal management system is for utilization in a compact display device. A duct is provided within the lamp housing of the display device and a high-wattage light source is mounted within the duct. Multiple cooling fins are mounted to at least one inner surface of the duct and extend into the duct. A thermal radiation absorbent coating, such as black anodization, covers the interior of the duct and the cooling fins and provides for an increased surface absorption of thermal radiation. A port within the duct, which is transparent to visible light, is utilized to direct visible light through a display assembly. An infrared filter, which is reflective or absorptive of infrared radiation, such as a so-called "hot mirror" is utilized to maintain thermal radiation within the duct and a fan is then utilized to pass cooling fluid through the duct, passing the cooling fluid over the cooling fins and removing thermal energy from the display device in a highly efficient manner.
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Rodriguez, Jr. Ernesto Melquiades
Zhao Xiaowei
Dowling William
Ho Nestor F.
Minnesota Mining and Manufacturing
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