An extended area cavity type blackbody for use as a radiometric reference for imaging systems may have a well in the form of a cube having four sidewalls and a back wall, and open at the front. The temperature of the back wall may be controlled independently of the temperature(s) of the sidewalls. This system may produce infrared radiance closer to an ideal radiator than typical extended area sources. A simple blackbody is disclosed, having a source plate with a front emitting surface; a ledge element disposed in front of and below the source plate for heating air in front of the source plate; and (optionally) another ledge element disposed in front of and above the source plate for cooling air in front of the source plate. A housing may support the source plate and ledge element, and a vent may be provided in front of and above the source plate. A resistive heater may be associated with the ledge element; and (optionally) TECs may be associated with the other (cooling) ledge element. Angles of the ledges may be adjustable to optimize the best uniformity for a particular implementation. Temperature control of the ledges may be in unison with or independent from the source plate.

An extended area cavity type blackbody for use as a radiometric reference for imaging systems may have a well in the form of a cube having four sidewalls and a back wall, and open at the front. The temperature of the back wall may be controlled independently of the temperature(s) of the sidewalls. This system may produce infrared radiance closer to an ideal radiator than typical extended area sources. A simple blackbody is disclosed, having a source plate with a front emitting surface; a ledge element disposed in front of and below the source plate for heating air in front of the source plate; and (optionally) another ledge element disposed in front of and above the source plate for cooling air in front of the source plate. A housing may support the source plate and ledge element, and a vent may be provided in front of and above the source plate. A resistive heater may be associated with the ledge element; and (optionally) TECs may be associated with the other (cooling) ledge element. Angles of the ledges may be adjustable to optimize the best uniformity for a particular implementation. Temperature control of the ledges may be in unison with or independent from the source plate.

An improved infrared-based gas detector apparatus is described in which a substantial improvement in temperature measurement and tracking accuracy is achieved by combining a temperature sensing element such as a Thermistor to the body of a Lead Selenide (PbSe) plate detector. This allows for as close to possible measurement of the actual Lead Selenide film temperature without coming directly in physical contact with the film surface itself.

The present invention provides a temperature control method for a heating element, a night vision system calibration device and a system. The night vision system calibration device includes: a first housing, a heating element and a second housing covering the first housing. The heating element includes a heating area, a shape of the heating area being a shape of a target heating body used when a night vision system is calibrated. The second housing and the first housing form an accommodating cavity, and the heating element is disposed in the accommodating cavity. The second housing is provided with a through hole communicating with the accommodating cavity and adapted to the shape of the heating area, and the heating area is configured to emit infrared radiation through the through hole. In the temperature control method for a heating element, the night vision system calibration device and the system provided in the present invention, a target heating body for a night vision system used when the night vision system is calibrated may be provided, so that the night vision system after fault repair can be calibrated based on the target heating body, thereby improving the accuracy of the night vision system after the fault repair.

A gas sensing device, that may include a suspended gas sensing element, a frame that supports the suspended gas sensing element, and one or more traps for trapping at least one out of Siloxane and silicon dioxide. The suspended gas sensing element may include a gas reactive element that has a gas dependent temperature parameter, and a semiconductor temperature sensing element that is thermally coupled to the gas reactive element, and is configured to generate detection signals that are responsive to a temperature of the gas reactive element. The gas reactive element and the semiconductor temperature sensing element are of microscopic scale.

Infra-red sensors are often used in turbo molecular pumps to detect the temperature of the rotor or other mechanical parts and therefore indicate imminent, or potential, running failures. As deposits build up on either the infra-red sensor, or on the surface being monitored, the reading given by the sensor may not be a true representation of the actual surface temperature which can cause the pump controller to fail to stop the pump in time. The present invention provides a method and device for calibrating the sensor by creating a determined temperature rise in the sensor whilst keeping the rotor at ambient temperature. In particular the present invention uses the motor stator as the heater for causing the temperature increase.

According to an aspect of this disclosure, a system of applying thermal loads may include at least one laser module, and a plurality of optical components fixed to the at least one laser module and directing a plurality of laser beams from the plurality of optical components towards a surface. Further, the plurality of laser beams apply radiative heating to the surface in accordance with the system. The system also includes at least one infrared camera measuring thermal conditions of the surface, and a controller coordinating operation of the at least one laser module and the at least one infrared camera.

Systems and methods for thermal processing of a workpiece at low temperatures are disclosed. In one example implementation, a thermal processing apparatus includes a processing chamber having a workpiece support. The workpiece support can be configured to support a workpiece. The apparatus can include one or more heat sources configured to emit electromagnetic radiation in a first wavelength range to heat the workpiece to a processing temperature. The processing temperature can be in the range of about 50 C. to 150 C. The apparatus can include one or more sensors configured to obtain a measurement of electromagnetic radiation in a second wavelength range when the workpiece is at the processing temperature. The second wavelength range can be different from the first wavelength range.

A unit cell inspecting device includes an inspection unit which captures an image of an edge of a unit cell using long-wave infrared rays and measures a position of an edge of an electrode provided in the unit cell. The inspection unit includes: a main heating part configured to heat the edge of the unit cell, thereby raising a temperature of the edge of the electrode provided in the unit cell; and an image capturing part configured to capture the image of the edge of the unit cell by using the long-wave infrared rays, thereby acquiring a thermal image of the edge of the electrode provided in the unit cell; and an inspection part configured to measure the edge of the electrode in the thermal image captured by the image capturing part, thereby measuring the position of the electrode by using the measured edge of the electrode.

An improved infrared-based gas detector apparatus is described in which a substantial improvement in temperature measurement and tracking accuracy is achieved by combining a temperature sensing element such as a Thermistor to the body of a Lead Selenide (PbSe) plate detector. This allows for as close to possible measurement of the actual Lead Selenide film temperature without coming directly in physical contact with the film surface itself.