Abstract: A method of stabilizing a clinical thermometer and the apparatus thereof are disclosed. The method comprises the steps of pre-heating the surrounding temperature to a pre-set temperature prior to using the clinical thermometer for measuring temperature; and providing compensational temperature by way of heat energy by a control circuit such that the surrounding temperature is maintained and stabilized at the pre-set temperature so as to avoid the change of the surrounding temperature from affecting the measured temperature. The stabilizing devices for a clinical thermometer comprises a clinical thermometer probe head which is a material capable of producing heat energy; and a heating controller connected to the probe head which provides cavity heating for the probe head prior to temperature measuring to the pre-set surrounding temperature, thereby the heating controller causes the surrounding temperature to maintain at a constant and stable temperature such that the precision of measuring is accurate.

Abstract: A plurality of miniature IR sensors disposed in a sensor array are aimed at a target area of interest, the array providing a thermal “image” of the target area. Processing electronics detect the hottest spot of the target as indicated by sensors in the array to directly indicate or estimate the hottest temperature(s) of the target area. Preferably, the sensor array can be utilized, for example, to determine the core body temperature of a patient by examination of the tympanic membrane.

Abstract: A radiation thermometer capable of precise measurement without depending upon an absolute precision of an infrared ray sensor for detecting infrared ray or a temperature sensor for measuring a temperature of the infrared ray sensor is provided wherein, controlling means retains a reference temperature for the measurement object, a sensor reference temperature for the sensor, and a sensor reference output for the sensor output when infrared ray radiated from the object of measurement having the object of measurement reference temperature is detected by the infrared ray sensor having the sensor reference temperature, and calculates the temperature of measurement object based on a first difference as a difference between a sensor temperature to be measured by the sensor temperature measuring portion and a sensor reference temperature, a second difference as a difference between a sensor output to be detected by the infrared ray sensor and a sensor reference output and the object of measurement reference temperat

Abstract: To provide a radiation thermometer capable of measuring a body temperature more accurately than it has been conventionally possible, by taking into account an infrared ray that is emitted from a front end of the probe portion and reflected from an eardrum or an external acoustic opening. The radiation thermometer has body temperature calculating means for calculating a body temperature according to a predetermined arithmetic expression based on an emissivity when the emissivity of the eardrum or the external acoustic opening is less than 1, an output of infrared-ray detecting means and an output of temperature-measuring means.

Abstract: An infrared sensing element of the present invention includes a base including a thin film portion and a thick wall portion arranged around the thin film portion, and a thermopile including a plurality of thermocouples connected in series so that cold junctions are located on the thick wall portion and hot junctions are located on the thin film portion, wherein a thermosensitive portion is provided in contact with the thick wall portion so that a reference temperature with high accuracy can be used for determining temperature based on output from the thermopile. A PN junction formed on a semiconductor substrate serves as the thermosensitive portion, and it is used to provide for a compact infrared sensing element with high performance at low cost.

Abstract: A method and apparatus for calibrating temperature measurements that are taken with a first radiation detector for measuring thermal radiation given off by a reference substrate are provided. The method includes the steps of heating the reference substrate, which carries at least one reference material having a known melting point temperature, to or over the melting point temperature and measuring the thermal radiation of the reference substrate during the heating step, during a cooling period that follows the heating, or during both the heating and the cooling periods. The method also includes the step of correlating a measurement plateau of the thermal radiation which occurs during the measuring step with the known melting point temperature.

Abstract: A sensor assembly for glass-ceramic cooktop appliances includes an optical detector having an reference component and an active component. The active component is arranged to receive radiation from the glass-ceramic plate, and the reference component is insulated from radiation from the glass-ceramic plate. The sensor assembly further includes a temperature sensor and a heater located adjacent to the reference component and a controller having a first input connected to the optical detector and a second input connected to the temperature sensor. The controller is responsive to the optical detector and the temperature sensor to calibrate the sensor assembly. Calibration is accomplished by noting the temperature reading of the temperature sensor after the burner assembly has not been used for a predetermined period of time to obtain a first calibration point. Then, the burner assembly is activated so that the temperature of the glass-ceramic plate is raised, and the output of the optical detector is noted.

Abstract: An infrared ear thermometer includes a detector head housing, a heat sink, a recess formed in the heat sink, a thermopile sensor mounted within the recess, a thermistor, and temperature determination circuitry. The recess defines an aperture that limits the field of view of the thermopile sensor. The thermal capacities and conductivities of the heat sink and the thermopile sensor are selected so that the output signal of the thermopile sensor stabilizes during a temperature measurement. A method of determining temperature using the ear thermometer takes successive measurements, stores the measurements in a moving time window, averages the measurements in the moving window, determines whether the average has stabilized, and outputs an average temperature.

Abstract: An infrared temperature wave guide device that is adapted for use in all kinds of precision detecting and temperature sensing apparatus directed to apply in a contact or non-contact manner measuring, control, recording, monitoring, and inspecting on a temperature source to be measured, the structure including a wave guide tube, a housing accommodating a thermopile, a thermistor, and a circuit board, and a rear cap for securing purposes. A front end of the wave guide tube is provided with a cover to prevent entry of dusts. The housing and rear cap are formed from plastic material. The connection of the housing and the rear cap is suitably adjustable to allow mounting of different thermopiles. The structure as a whole is durable, light and compact, and has longer service life, preferred anti-oxidization capability. Besides, it ensures stable quality during mass production and is easy to process.

Abstract: The invention relates to a method of thermal compensation of a thermopile arranged in a sensor housing, characterised in that it implements:

Abstract: A non-contact temperature sensor includes a holder serving as a light conducting portion for guiding infrared rays incident from a first opening at its one end; a plastic film arranged at a second opening of the other end of tile light conducting portion; a cover for sealing the second opening at the other end of the holder so as to provide a space between itself and the plastic film, an infrared ray detection heat-sensitive element arranged on the side of the space of the plastic film, for detecting the infrared rays incident from the first opening; and a temperature compensating heat-sensitive means arranged in the vicinity of the holder, for detecting the temperature of the holder. In this configuration, the surface temperature of the body-to-be-detected can be precisely detected in a short time.

Abstract: An infrared sensing element of the present invention includes a base including a thin film portion and a thick wall portion arranged around the thin film portion, and a thermopile including a plurality of thermocouples connected in series so that cold junctions are located on the thick wall portion and hot junctions are located on the thin film portion, wherein a thermosensitive portion is provided in contact with the thick wall portion so that a reference temperature with high accuracy can be used for determining temperature based on output from the thermopile. A PN junction formed on a semiconductor substrate serves as the thermosensitive portion, and it is used to provide for a compact infrared sensing element with high performance at low cost.

Abstract: Body temperature measurements are obtained by scanning a thermal radiation sensor across the side of the forehead over the temporal artery. A peak temperature measurement is processed to compute an internal temperature of the body as a function of ambient temperature and the sensed surface temperature. The function includes a weighted difference of surface temperature and ambient temperature, the weighting being varied with target temperature through a minimum in the range of 96° F. and 100° F. The radiation sensor views the target surface through an emissivity compensating cup which is spaced from the skin by a circular lip of low thermal conductivity.

Abstract: A temperature control system includes an integrated circuit that combines magnetic sensitive elements and infrared sensors to detect user temperature settings and measure temperature, respectively. Integration of the various sensors results in a very cost-effective and reliable temperature control system suitable for consumer applications.

Abstract: The present invention includes a temperature-dependent power window and sunroof system for an automotive vehicle. This system according to the present invention is activated when the vehicle is presumably parked and left unattended by a vehicle operator. One aspect of the invention is directed to the detection of actions by the vehicle operator as input for system activation and deactivation, for example, the operator removes the ignition key, opens the driver door, closes the driver door and locks the door. Advantageously, if the vehicle operator stays in the vehicle after the key is removed from the ignition cylinder, the present invention remains inactivated whereby affording the maximum flexibility to the car driver. One preferred embodiment maintains a “comfortable” temperature range for the interior of the vehicle over the time period the vehicle is parked and left unattended.

Abstract: A radiation detector for axillary temperature measurement comprises a wand having an axially directed radiation sensor at one end and an offset handle at the opposite end. The radiation sensor is mounted within a heat sink and retained by an elastomer in compression. The radiation sensor views a target surface through an emissivity compensating cup and a plastic film. A variable reference is applied to a radiation sensor and amplifier circuit in order to maintain full analog-to-digital converter resolution over design ranges of target and sensor temperature with the sensor temperature either above or below target temperature.

Abstract: The invention is directed to a thermopile sensor and in particular to a radiation thermometer or a motion detector with a thermopile sensor. The thermopile sensor includes a thermopile supported in a housing. The thermal capacity of the cold and hot junctions of the thermopile including its supporting structure and the thermal conductivity of the supporting structure are mutually coordinated such that a change in the housing's temperature produces a change of equal magnitude in the cold and hot junctions' temperature, that is, no temperature gradients occur within the thermopile.

Abstract: A radiation thermometer is rationally adjusted during manufacturing processes instead of requiring a user to manually adjust the radiation thermometer each time a temperature is measured, and hence, the radiation thermometer better improves temperature measurement accuracy.

Abstract: The invention is directed to a probe tip (10) for a radiation thermometer in which the infrared radiation to be measured is directed through a waveguide device (12) to a radiation sensor (14) that converts the incident radiation into an electrical output signal from which the target temperature is determined by means of a downstream electronic measurement circuitry. To reduce temperature gradients in the sensor (14), the invention provides for the sensor housing (16) to be thermally coupled to the waveguide device (12) via a thermal coupling arrangement (24, 28, 30), such that the waveguide device is in direct thermal contact with the side of the sensor housing (16) close to the radiation and the opposite side thereof via the thermal coupling arrangement (24, 28, 30). Preferably, the thermal coupling arrangement (24, 28, 30) which is made of a material conducting heat well has substantially its entire surface area in abutting engagement with the corresponding sides of the sensor housing (16).

Abstract: Unless constantly protected by overhead garages, an automotive vehicle, when parked and with its windows and sunroof opened or closed, is often subjected, respectively, to the risk of freezing or overheating its interior. Such extreme temperatures will reduce the life span of the electronic and mechanical components in or near the vehicle interior. Also, excessively high and low temperatures in the interior of the car would clearly cause a rather discomforting experience for the driver and passengers who subsequently seat themselves in it. This experience is keenly amplified for young children, elderly and those who are physically weak because of their reduced tolerance to discomfort.Briefly, a method and apparatus is provided for automatically adjusting a vehicle's window and sunroof positions after a vehicle operator has left a car unattended. The present invention includes a power window and sunroof system for an automotive vehicle.

Abstract: A sensor assembly for a glass-ceramic cooktop appliance having at least one burner assembly disposed under a glass-ceramic plate. The sensor assembly includes a waveguide having a first end disposed in the burner assembly and a second end disposed outside of the burner assembly, and at least one detector located adjacent to the waveguide's second end. A radiation collector is located adjacent to the first end of the waveguide so as to direct incident radiation into the waveguide. The radiation collector includes a plurality of reflective surfaces and a mechanism for adjusting the position of the reflective surfaces relative to one another in order to adjust the sensor assembly's field of view.

Abstract: The radiation clinical thermometer of the present invention is provided with a light guide tube 15 to guide the infrared radiation from the temperature-measured object, a first infrared sensor 10 for detecting the infrared radiation from the light guide tube 15, a temperature sensitive sensor 12 which generates a reference temperature signal, a reference cavity 17 which has approximately the same temperature condition as the light guide tube 15 and is sealed so as to shut out infrared radiation from outside, a second infrared sensor 11 for detecting the infrared radiation from the reference cavity 17, a temperature computing means 13 for calculating temperature in accordance with the signals from the first infrared sensor 10 and the second infrared sensor 11, a temperature sensitive sensor 12, and a display unit 14 for displaying temperature in accordance with the signal from the temperature computing means 13; and at least either the light guide tube 15 or the reference cavity 17 is tapered off toward the em

Abstract: A radiation detector for axillary temperature measurement comprises a wand having an axially directed radiation sensor at one end and an offset handle at the opposite end. The radiation sensor is mounted within a heat sink and retained by an elastomer in compression. The radiation sensor views a target surface through an emissivity compensating cup and a plastic film. A variable reference is applied to a radiation sensor and amplifier circuit in order to maintain full analog-to-digital converter resolution over design ranges of target and sensor temperature with the sensor temperature either above or below target temperature.

Abstract: A sensor for measuring the flow rate of a fluid through a conduit. The fluid flow rate in the vicinity of a heated temperature sensor is made to cyclically vary from a minimum to a maximum to produce a cyclic signal indicative of the heat removed from the sensor by the fluid flow. The magnitude of the cyclic signal is representative of the mass flow rate of the fluid. A detection circuit responsive to the cyclic signal extrapolates therefrom the mass flow rate and provides an output signal related thereto. Mechanically and electrically balanced configurations enable high speed and high precision measurements to be obtained. Bypass and sampling embodiments are presented. In alternative preferred embodiments circuits are disclosed for determining and maintaining a constant average temperature difference between the sensors and the fluid being sensed, to thereby replace heat loss by the sensors as a result of contact with the fluid being sensed.

Abstract: An infrared thermal sensor assembly for sensing the temperature of a target, the sensor assembly including a heat sink having a bore therethrough; a thermopile housed in the bore; and a heater operative to heat the heat sink.

Abstract: An infrared thermal sensor assembly for sensing the temperature of a target, the sensor assembly including a heat sink having a bore therethrough; a thermopile housed in the bore; and a heater operative to heat the heat sink.

Abstract: A temperature control system and method for regulating the temperature of an external device or load is provided which maintains the actual ambient temperature of the external device at a desired set point temperature. The temperature control system includes a solid state temperature sensing device for sensing the actual temperature of the external device, and generating a sensor output voltage proportional to the actual temperature. An adjustable voltage dividing circuit generates a temperature compensated set point voltage proportional to the desired temperature. A fixed voltage dividing circuit generates a reference voltage having a predetermined magnitude. A first comparator compares the set point voltage to the sensor output voltage, and generates an output signal indicating whether the sensor output voltage is maintained at the set point voltage. A second comparator detects whether the external device is maintained in an "off" or "on" state by comparing the set point voltage to the reference voltage.

Abstract: A regulating apparatus for a motor vehicle air conditioner which automatically influences a cab temperature set by a vehicle operator dependent upon sunshine striking the vehicle, wherein, an intensity of sun rays is determined from, an intensity of daylight brightness and an intensity of an infrared portion of the daylight. The daylight is led to one or more sensors by one or more light conductors.

Abstract: An electrical load, such as a motor, has a first and a second terminal element for supplying electricity to the load. The second terminal element is directly connected to the load whereas the first terminal element together with a further terminal element forms a clamping socket for a switching device. The further terminal element is electrically connected to the load. When the switching device is inserted into the seat, the first terminal element is connected to the load in series with the further terminal element via the switching device.

Abstract: An IR temperature sensor comprises a sealed housing containing an inert gas atmosphere and enclosing a detector for conversion of heat radiation into an electrical signal, an optical system which images the heat radiation emanating from an object onto the detector, a heat-conducting temperature equalization element which maintains the detector and the optical system at a common temperature, and a temperature sensor which measures the temperature of the temperature equalization element. The sealed housing protects the sensor from the external environment and maintains uniform temperature between the optical system and the sensor.

Abstract: An integrated optical temperature and pressure sensor system that is birefringently biased. A broad band light source is transmitted via a fiber optic cable having a splitter, a collimator and a polarizer to a first birefringent bias element. The first birefringent element has a partially reflective coating to reflect back a portion of the light signal to the first polarizer to yield a first reflective modulated light that consists of temperature information irrespective of external forces. The non-reflected light continues to a second birefringent bias element. The second birefringent crystal provides additional birefringent bias to the light wave before the light wave enters an isotropic pressure sensor media. An external pressure applied to the sensor causes the light to experience stress-induced birefringence. The sensor comprises a highly reflective surface which redirects the light back through the sensor, both bias crystals and the polarizer to yield a second reflective modulated light spectrum.

Abstract: A multiple-loop temperature controller using RTD sensors is continuously calibrated by performing a zero or full scale calibration during each operating cycle. An arrangement of four multiplexers is used to successively connect each RTD sensor to a pair of current sources and an A/D converter, thereby allowing the current sources and A/D converter to be shared among all of the RTD sensors. Measurement errors are minimized by using the same multiplexers for temperature measurement and calibration, with calibration being performed by connecting the multiplexers to a ground reference or precision resistor. Interrupt-driven temperature loop processing is used to reduce A/D conversion delays, thereby allowing high-precision A/D converters with long settling times to be used. The multiple-loop temperature controller is advantageously utilized in an automated blood culturing system requiring precise control of sample temperatures.

Abstract: A climate control system for the interior of a vehicle includes infrared sensing to measure thermal level therein and to provide a signal to the system control for establishing and maintaining the thermal level to a level preset by a vehicle occupant. The viewing field and admissibility of the infra-red sensor determines the composition of the signal by controlling the objects, surfaces, area and radiation included in the field. Appropriate selection of viewing field and admissibility integrates into the signal corrective factors for external climatic conditions and solar re-radiation within the vehicle.

Abstract: A temperature sensor assembly for monitoring railroad car wheels includes an array of temperature detectors arranged to generate a temperature profile of the wheel. The array may be formed integrally with imaging elements and signal conditioning elements on a single IC chip. The assembly may be arranged to monitor the wheel either transversely or in parallel to the direction of wheel movement.

Abstract: The monitoring of energy radiating from a heated material, such as a hot melt adhesive, dispensed onto a substrate may be accomplished by an infrared sensor. The wand of the infrared sensor is located downstream of the dispensed material for receiving the radiant energy. The wand is provided with internal air for cooling and for providing laminar air flow in the vicinity of the lens to prevent the accumulation of airborne contaminants on the lens. The wand is also provided with a light aiming device.

Abstract: Apparatus the temperature of a thermoplastic sheet including a hollow wave guide having a bend therein, for receiving and transmitting infrared energy emitted by the sheet between a sheet heater at a sheet forming station and differential pressure forming apparatus at a forming station. One end of the hollow channel is mounted adjacent the sheet. At the opposite end of the hollow channel, a plurality of infrared energy sensors is mounted for sensing the infrared energy. Infrared sensors include mechanism for converting the infrared energy to electrical energy to operate a control system which controls the level of electrical power to the heater and thus controls the temperature of the sheet.

Abstract: A method of measuring the temperature of a matter accurately, in non-contact fashion and without setting any emissivity comprising obtaining a spectral characteristics of absorbing electromagnetic waves inherent to a matter whose temperature is to be measured, obtaining those absorption peak wavelengths of the electromagnetic waves which correspond to two or more high points of electromagnetic wave absorption rate obtained from the spectral characteristics, measuring amounts of the electromagnetic waves, which have the absorption peak wavelengths, radiated from the temperature-measured matter, and calculating the temperature of the matter from blues of the radiant amounts of the electromagnetic waves thus measured.

Abstract: An optical temperature sensor has an outer probe with a sapphire element at its forward end within a stagnation chamber through which hot gas flows and heats a thermally-emissive coating on the element. A lens focusses radiation emitted by the coating onto one end of a fibre-optic cable that extends within the rear of the probe. A gas passage along the probe enables cooling gas to flow from an inlet at the rear end, around the fibre optic cable, lens and through an outlet rearwardly of a transparent thermal barrier which protects the sapphire element from the cooling gas.

Abstract: The control system for the air-conditioner disclosed herein comprises means for setting a set value of a room temperature, means for detecting an actual value of the room temperature, means for detecting a radiant heat from walls etc. of the room as a radiation temperature, and an operational control means. The operational control means stores a comfort line which defines an inverse proportional relation between the room temperature and the radiation temperature, said comfort line depending upon set value of the room temperature. The operational control means calculates a first control index which is represented by a difference between the actual value and the set value of the room temperature and a second control index which is represented by a difference between the comfort line and the current temperature condition represented by the actual room temperature and the radiation temperature.

Abstract: An apparatus and process for a temperature measuring pyrometer probe that measures gas temperatures above the melting point of conventional thermocouple material. The apparatus is used to calculate radiation heat losses and compensate for pneumatic cooling from the thermocouple junction of the pyrometer probe. The pyrometer probe has an inner hollow body which defines an inner chamber. The inner hollow body has an open end and the inner chamber is in communication with ambient gas surrounding the pyrometer probe. The inner hollow body is mounted within an outer hollow body and such mounting defines cooling channels. The cooling channels accommodate fluid flow which cools the inner hollow body. The ambient gas is directed into a converging-diverging nozzle, mounted within the inner hollow body, toward a thermocouple junction. The converging-diverging nozzle has a wall suction channel through which a boundary layer of the ambient gas is drawn away from the thermocouple junction.

Abstract: A radiation clinical thermometer includes a probe, a detection signal processing section, a body temperature operating section, and a display unit. A filter correction section for setting a correction value based on the transmission wavelength characteristics of a filter is arranged. The body temperature operating section receives infrared data, temperature-sensitive data, and the correction value from the filter correction section so as to calculate body temperature data.

Abstract: An infrared thermometer (10) with a fixed aperture (99), focusable remote pickup head (12) conveys infrared light (16) from a target (14) to a photosensor (52) of a defocused sensor head (20). The remote pickup head (12) has a reimaging lens (84) and means for selectively adjusting the focus of the lens (84) relative to the target (14) after the pickup head has been fixedly mounted. The aperture setting is kept fixed during the focus adjustment to eliminate the need to recalibrate after the focus adjustment. The defocused sensor head (20) has a defocused relay lens (50) which is selectively out of focus to convey a slightly blurred, out of focus image of the output end of the fiber optic cable (18) to the photosensor (52) to reduce noise, average the light signal and reduce calibration difficulties due to high intensity spots in the image field and to make the unit less susceptible to misfocusing.

Abstract: A biomedical thermometer for taking the temperature of a person at various body sites, including the ear, includes a radiation detector, a temperature detector for measuring the temperature of the radiation detector, and a heating and cooling unit for changing the temperature of the radiation detector. The system also includes a temperature processor for generating an output proportional to the absolute temperature of the radiation detector, responsive to signals generated by the radiation detector and the temperature detector.

Abstract: In the case of a system for detecting excessively heated wheel bearings and/or wheel tires of rail vehicles, a device is inserted into the path of the beam extending from a measuring point to a heat radiation sensor that distorts the resulting image and, in particular, widens it at least uniaxially. This device also serves to detect the measuring point when wheel axles shift in an axial direction. A system of this type may be formed by using a distorting optical device (6) which permits the imaging of a correspondingly widened field (4).

Abstract: A high speed infrared temperature measuring device which consists of a lens barrel in an instrument housing, a sensor in the lens barrel to read an infrared target signal, a processing circuit for the signal, an automatic circuit for the thermoelectric cooler and a black body compensation circuit and means to read and record the processed signal.

Abstract: A laser thermal testing method and system for use in testing a fire alarm system which has a plurality of heat-sensors which are remotely distributed throughout a protected area. The laser thermal testing system includes a first laser and a second laser. The first laser generates an aiming beam of coherent electromagnetic radiation in the visible spectrum. The laser thermal testing system also includes a movable reflector which reflects the aiming beam. The movable reflector is optically coupled to the first laser. The movable reflector is first moved in order to align the aiming beam in an aligned position so that the aiming beam is reflected onto one of the heat-sensors. The movable reflector is then fixedly secured in the aligned position. The second laser generates a heating beam of coherent electromagnetic radiation in the infrared spectrum.

Abstract: An electronic temperature control for a cordless ironing apparatus. The temperature of the sole plate of the iron is sensed by a thermistor embedded therein; the thermistor is part of an astable multivibrator circuit, and any change in temperature of the sole plate causes a change in resistance of the thermistor, and a corresponding change in frequency at the output of the multivibrator. This output drives an infrared LED, and the light emitted by the LED in the iron is sensed by a phototransistor in the base, which relays the sensed temperature information to a microprocessor therein which controls the current applied to the heating element accordingly, to maintain the desired temperature of the sole plate.

Abstract: A temperature monitoring system includes a linear array of six pyroelectric sensors mounted in a block. A through hole is provided in the block for each sensor. A bore in the block having an axis which intersects the axis of each through hole accommodates a rotary shaft. The shaft is provided with a diametrically extending bore for each through hole. Thus rotation of the shaft alternately exposes each sensor to the shaft itself and to an object in the line of sight of each sensor as defined by its corresponding throughhole. The output signal from each sensor is differentiated and used to provide a temperature measurement. The output signal is corrected for any drift in the temperature of the shaft or block. This is effected by periodically bringing a heated calibration head operating at a known temperature into the line of sight of each sensor.

Abstract: A temperature detecting device detects infrared rays from an object to be measured and determines the temperature of the object based on the detection result. To avoid the influence of contamination adhered to the infrared ray incident surface of an infrared ray detecting unit, a correction coefficient for the detection result of the infrared ray detecting unit is determined before actual temperature detecting starts. For this purpose, the infrared rays fed from the object into the infrared ray detecting unit are interrupted by a shutter device. The infrared ray detecting unit detects the infrared rays fed from the shutter device through the infrared ray incident surface, and it outputs a first detection value corresponding to the shutter temperature. A shutter temperature detecting element directly detects the actual temperature of the shutter device, and it outputs a second detection value corresponding to the actual temperature of the shutter device.

Abstract: A radiation clinical thermometer includes a probe, a detection signal processing section, a body temperature operating section, and a display unit. A filter correction section for setting a correction value based on the transmission wavelength characteristics of a filter is arranged. The body temperature operating section receives infrared data, temperature-sensitive data, and the correction value from the filter correction section so as to calculate body temperature data.