Abstract: With proposed radiation thermometry and radiation thermometry system (10), a thin-film (2) is disposed on a substrate to make a thin-film substrate, and measurement is conducted for polarized radiance components emitted from the thin-film (2) in a direction which is within an angle range ? eic, from a planar normal line of the thin-film (2), where radiance components remain invariable. A temperature of the thin-film (2) is determined on the basis of the measured results of the polarized radiance components. The polarized radiance components are measured using a radiometer (4) by measuring p-wave polarized radiance components which are parallel to an emitting surface including a direction where the polarized radiance components are measured. A pseudo-blackbody (5) is disposed in a mirror symmetrical state to the radiometer (4), and absorbs and negates background radiations to the radiometer (4).

Abstract: A clinical thermometer which employs an infrared sensor and is constructed so as to prevent the occurrence of a temperature measurement error caused by a change in temperature of a tip portion (of a housing a temperature measuring portion) during temperature measurement. In one embodiment a heat insulator is attached to the tip portion to prevent a rise in temperature of the tip portion. In a second embodiment, the tip portion is formed of a metal of good heat conductivity in the shape of a net for example to improve the heat radiating property of the tip portion, thereby preventing a rise in temperature of the tip portion. In a third embodiments, a temperature sensor is attached to the tip portion to correct a temperature measurement error caused by a change in temperature of the tip portion.

Abstract: The decarburization reaction which occurs in the production of an electrical steel sheet is quantitatively detected by passing an electromagnetic wave beam into the vicinity of the sheet, which is positioned in an annealing furnace, and then measuring the absorption amount of the electromagnetic wave beam, which is absorbed by water vapor in the vicinity of the steel sheet and/or by CO gas formed due to the reaction between the water vapor and the steel sheet.

Abstract: An interferometric contact-free measuring method for sensing, by a laser beam, motional surface deformation of a workpiece subject to an ultrasonic vibration, comprising splitting the laser beam into a measuring beam incident upon a measuring point on the workpiece and a reference beam incident upon a reference point close to the measuring point, and bringing the two beams, after reflection, into a common optical detector.

Abstract: For the iron cores of an electrical machinery and apparatuses, such as transformers, electric motors and generators, mostly a grain-oriented electromagnetic steel sheet is used. Since the grain-oriented electromagnetic steel sheet has a (110) [001]texture and is thus easily magnetized in the rolling direction, the direction of magnetic flux in the iron cores is required to be coincident with the rolling direction. However, this requirement cannot be completely fulfilled due to the shape and an operation efficiency of producing the iron cores as well as generation of a magnetic reluctance in the butted iron-core elements. Laser irradiation regions are formed, according to the present invention, for example, on the following: the parts of the iron core where the rotational magnetic field is generated; the entire surface of the I-type elements or: the major part of the E or C type element.

Abstract: In a method of producing a grain-oriented electromagnetic steel sheet, a laser beam is irradiated onto the steel sheet, which has been subjected to a final high temperature annealing in order to approximate the crystal orientation of the sheet in a (110) [001] orientation. Because of the laser beam irradiation, regions of high dislocation density are locally formed in the steel sheet and subdivide the magnetic domains, with the result that a low watt loss is achieved.

Abstract: When a steel sheet or the like is heated in a furnace to a temperature somewhat higher than the room temperature and is still or moved, its temperature can be measured by detecting the radiant energy therefrom. The measurement is normally difficult due to the influence of background noise of radiant energy from the surroundings, change of the transmittance factor of the environment or atmosphere for radiant energy, and change of the emissivity of the object to be measured.

Abstract: A surface temperature measuring apparatus is arranged to comprise means for conducting a first radiant energy generated from an object to be measured, said energy conducting means being provided opposite to said object, and reference radiation source means provided to mask the influence of radiation noise from the furnace on a radiometer and to generate a second radiation whose level is substantially determinable, whereby the surface temperature of said object can be determined from the detected values of said first and second radiations.

Abstract: A process of providing electromagnetic steel strips or sheet with excellent magnetic properties. The process comprises the steps of:irradiating with a laser-beam the surface of an electromagnetic steel sheet which has been finally annealed, thereby locally forming marks of the laser-beam irradiation on the surface of the steel, and;subsequently, subjecting the steel sheet to the formation of an insulating film on the sheet surface at a temperature of the sheet not exceeding 600.degree. C.

Abstract: In a method of producing a grain-oriented electromagnetic steel sheet, a laser beam is irradiated onto the steel sheet, which has been subjected to a final high temperature annealing in order to approximate the crystal orientation of the sheet in a (110), [001] orientation. Because of the laser beam irradiation, regions of high dislocation density are locally formed in the steel sheet and subdivide the magnetic domains, with the result that a low watt loss is achieved.

Abstract: A black body furnace and a radiation thermometer are spaced from each other in the direction of the surface of a heated material the temperature and emissivity of which is to be measured so as to be in a specular, or mirror-like, symmetry to a line normal to the heated material and the wavelength band of the detector of the radiation thermometer is selected such that the surface of the material shows specular, or mirror-like, reflection characteristics. The radiation energy emitted from the black body furnace is changed and the outputs of the radiation thermometer responding to the change are processed whereby the emissivity and surface temperature of the material are obtained. The use of this invention makes it possible to measure accurately the temperature of the material without any disturbance, even if the emissivity of the material is changed in the course of the measurement.

Abstract: A method and an apparatus for measuring a heated material in an industrial furnace by the use of a radiation thermometer comprising providing a sliding means at the tip portion of the radiation thermometer, changing a distance between the heated material and the shielding means to determine background radiation rate of the energy reflected or emitted from the atmosphere of the furnace. The background radiation rate is determined by the output energy of the radiation thermometer, which together with an accurate temperature of the heated material and an ambient temperature of the furnace, are used to calculate a temperature error at arbitrary distances. Setting the shielding means of the radiation thermometer in a position at which the temperature error is within a tolerable range, and measuring the heated material with use of the radiation thermometer.