Active night vision thermal control system using wavelength-temperature characteristic of light source
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United States of America Patent
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May 6, 2008
Grant Date -
Jan 24, 2008
app pub date -
Sep 30, 2007
filing date -
Jul 15, 2003
priority date (Note) -
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Abstract
A thermal control system (11) for a light source (46) of a vision system (10) includes a heater (63) that is thermally coupled to the light source (46). A thermal sensor (60) is thermally coupled to the tight source (46) and generates a temperature signal. A controller (50) is coupled to the heater (63) and to the thermal sensor (60). The controller (50) operates the heater (63) when the temperature signal is below a maximum temperature limit. The minimum and maximum temperature limits are obtained from the light-source wavelength-temperature characteristic.
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