Cost effective, mass producible temperature controlled thermal imaging calibration source
AssigneeSeek Thermal, Inc.
InventorsWilliam J. Parrish, Andrew Duerner, Brian Nehring, Matt Buckley, Charles Meyer
Life of this patent
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Abstract
A temperature-controlled calibration source for thermal imaging that provides for extremely inexpensive, mass producible, field deployable thermal calibration in specific, relatively low temperature ranges, and in particular temperatures near nominal human body temperature. A calibration source suitable for such applications may be implemented primarily as a suitable designed Printed Circuit Board (PCB), packaged in a thermally isolating housing and powered of commonly available power sources such as USB chargers.
Claims20
A temperature-controlled calibration source, comprising:
- a power supply element;
- a printed circuit board (PCB) comprising at least one metallic layer, wherein a resistive heater spanning a heated region is disposed on a first side of the PCB, and wherein a heat conductive layer spanning at least a portion of the heated region is disposed on a metallic layer of the PCB opposite the heater;
- a temperature sensor disposed to measure a temperature of the heat conductive layer;
- and
- a controller circuit configured to read the temperature sensor and to power the heater in feedback to the temperature sensor to maintain a predetermined temperature of the heat conductive layer;
- wherein the heat conductive layer functions as a blackbody calibration source for thermal camera calibration.
Dependencies are inferred from the claim text.