A luminescent diode surface within the cold shield of an infrared camera to allow for continuous non-uniformity correction with uniform irradiance across an infrared IR detector array. Further provided by the inclusion of a luminescent diode surface within the cold shield paneling is the ability to change the diode bias providing a negative luminescent effect while utilizing reverse bias and an electro-luminescent effect while utilizing a forward bias. This may then further allow for multiple set points to provide continuous offset and gain correction and to correct non-linear response effects.

A luminescent diode surface within the cold shield of an infrared camera to allow for continuous non-uniformity correction with uniform irradiance across an infrared IR detector array. Further provided by the inclusion of a luminescent diode surface within the cold shield paneling is the ability to change the diode bias providing a negative luminescent effect while utilizing reverse bias and an electro-luminescent effect while utilizing a forward bias. This may then further allow for multiple set points to provide continuous offset and gain correction and to correct non-linear response effects.

In a plasma processing apparatus, an additional viewing window is disposed between an infrared temperature sensor and a view window, and the additional viewing window is cooled to be retained at room temperature (20° C. to 25° C.), to reduce and to stabilize electromagnetic waves emitted from the viewing window. By correcting the value of the electromagnetic waves, the measurement precision of the temperature monitor is increased and it is possible to measure and to control the dielectric window temperature in a stable state.

Techniques are disclosed for systems and methods to control operation of a cryocooler/refrigeration system to provide cryogenic and/or general cooling of a device or sensor system. A cryocooler controller includes a motor driver controller configured to generate motor driver control signals based on operational parameters corresponding to operation of a cryocooler controlled by the controller, and a motor driver configured to generate corresponding drive signals to drive a motor of the cryocooler. The motor driver includes a first stage with a first pair of switches coupled serially between an input of the motor driver and a ground of the motor driver, a second pair of switches coupled serially between an output of the first stage and the ground of the motor driver, and an inductor coupled between the first and second pairs of switches, where operation of each switch is independently controlled by the motor driver control signals.

Techniques are disclosed for systems and methods to control operation of a cryocooler/refrigeration system to provide cryogenic and/or general cooling of a device or sensor system. A cryocooler controller includes a motor driver controller configured to generate motor driver control signals based on operational parameters corresponding to operation of a cryocooler controlled by the controller, and a motor driver configured to generate corresponding drive signals to drive a motor of the cryocooler. The motor driver includes a first stage with a first pair of switches coupled serially between an input of the motor driver and a ground of the motor driver, a second pair of switches coupled serially between an output of the first stage and the ground of the motor driver, and an inductor coupled between the first and second pairs of switches, where operation of each switch is independently controlled by the motor driver control signals.

Thermal camera assembly (1) comprising a thermal imaging detector (3) providing thermographic images and/or recordings, a protective casing (2) which houses the thermal imaging detector and includes a window (5) with a transparent screen (6), one or more sensors (15;16;20;32;33) arranged in the protective casing and providing signals indicative of a physical quantity or a state, one or more actuators (8;22;28) arranged in the protective casing, and a control unit (9) which is integrated in the protective casing. The control unit is directly connected to the thermal imaging detector to receive the thermographic images and/or recordings and transmit them to the outside, to the sensors to receive the relative signals, and to the actuators to control the latter according to the signals received. The control unit is able to manage and control the communication between all the components of the thermal camera and the outside. The thermal camera assembly is part of a control system for controlling an industrial production process and is used in a relative control method.

An apparatus for on-line temperature measurement and gas sampling used in the chute area of CDQ coke oven. The oven external unit includes a temperature indicator, a gas tube, a vacuum tank, and the oven internal unit includes a temperature measuring element, a temperature indicator. The temperature measuring element pass through the oven shell and oven along the oven radical, is located in the upper channel of the high-temperature ceramic tube with double-channel, one end of the high-temperature ceramic tube with double-channel is connected with the gas tube of the vacuum tank. The apparatus solves the problem that hard to measure the temperature and sample the gas of the part where the environment is the most complicated in CDQ coke oven, and has the advantages that the structure is simple, operation is easy to handle and can achieve real-time monitoring for the inner environment of the CDQ coke oven.

A self-referenced ambient radiation thermometer determines a temperature of a blackbody object and includes a temperature stabilized detector; a detector lens; a Lyot stop; a collimating lens; a field stop; an optical chopper such that the central radiation received by the temperature stabilized detector is modulated at a modulation frequency of the optical chopper; an objective lens in optical communication with the blackbody object and the temperature stabilized detector, optically interposed between the blackbody object and the field stop and that: receives the central radiation from the blackbody object and communicates the central radiation to the field stop; and a temperature-stabilized isothermal enclosure that provides a stable temperature and isothermal environment to elements disposed in the temperature-stabilized isothermal enclosure, wherein the elements disposed in the temperature-stabilized isothermal enclosure comprise: the temperature stabilized detector, the detector lens, the collimating lens, the Lyot stop, and the field stop.

A near-infrared sensor cover includes a cover body having transmissiveness to near-infrared rays. The cover body includes a base and a heater unit. The heater unit is arranged rearward of the base in a transmission direction of the near-infrared rays and includes a wire-like heating element. The heating element is configured to generate heat when energized. The base includes a rear portion that includes a rear surface of the base in the transmission direction. In the rear portion of the base, at least part of a section that is different from a section in which the heater unit is provided is formed by a reflection suppression structure including asperities. The asperities include a reflection suppression surface that is inclined relative to the transmission direction and reduces reflection of the near-infrared rays.

A near-infrared sensor cover includes a cover body having transmissiveness to near-infrared rays. The cover body includes a base and a heater unit. The heater unit is arranged rearward of the base in a transmission direction of the near-infrared rays and includes a wire-like heating element. The heating element is configured to generate heat when energized. The base includes a rear portion that includes a rear surface of the base in the transmission direction. In the rear portion of the base, at least part of a section that is different from a section in which the heater unit is provided is formed by a reflection suppression structure including asperities. The asperities include a reflection suppression surface that is inclined relative to the transmission direction and reduces reflection of the near-infrared rays.