Active night vision thermal control system using wavelength-temperature characteristic of light source
First Claim
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1. A thermal control system for a light source of a vision system comprising:
- a heater thermally coupled to the light source; and
a thermal sensor thermally coupled to the light source and generating a temperature signal;
a controller coupled to said heater and to said thermal sensor, said controller operating said heater when said temperature signal is below a temperature limit, said temperature limit corresponding to a wavelength-temperature curve of the light source.
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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 light 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 temperature limit corresponds to the wavelength-temperature characteristic of the light source.
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Citations
11 Claims
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1. A thermal control system for a light source of a vision system comprising:
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a heater thermally coupled to the light source; and a thermal sensor thermally coupled to the light source and generating a temperature signal; a controller coupled to said heater and to said thermal sensor, said controller operating said heater when said temperature signal is below a temperature limit, said temperature limit corresponding to a wavelength-temperature curve of the light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of thermally controlling operating range of a light source of a vision system comprising:
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generating a temperature signal in response to temperature of the light source; determining a maximum temperature limit in response to a wavelength-temperature characteristic of the light source; and heating the light source when said temperature signal is below the maximum temperature limit. - View Dependent Claims (11)
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Specification