Abstract:
A method of monitoring the nugget size of the welds produced by a spot welding machine, comprises optically imaging a region of a weld spot onto a transducer (21) after completion of the spot welding process. The transducer (21) produces an electrical signal having avalue dependent on the mean intensity and the wavelength distribution of the radiation emitted from the region of the weld spot (18) imaged on to the transducer (21). A computer (24) analyses the electrical signal produced by the transducer (21) to evaluate a weld nugget size indicator value and issue a warning through a visual display module (31) when welds of poor size are being, or about to be produced, so that corrective action can be taken by replacing or dressing the electrodes.
Abstract:
In order to determine a temperature on a semiconductor component (1), a scanning light wave (7) is irradiated onto a measuring point on the semiconductor component, a response light wave (8, 8null) reflected from the measuring point is recorded, and the temperature of the measuring point is ascertained with the aid of a temperature-dependent property R of the response light wave (8, 8null).
Abstract:
An infrared light detection array with a plurality of infrared light detectors, said infrared light detectors each comprising: a supporting leg fixed to said substrate at one end, having a laminated structure of an insulation layer and a wiring layer; and a heat insulation structure portion supported by said supporting leg, comprising an insulation layer having a first surface to serve as a surface of incidence for infrared light to impinge on and a second surface to serve as a surface of incidence for reading light to impinge on, a reflection film which is formed on said second surface of said insulation layer, and a resistor connected with said wiring layer, and as said supporting legs heated up to a detection temperature by said infrared light reversibly warp, said infrared light detectors change the reflection direction of said reading light impinging upon said reflection films.
Abstract:
A thermal torch (12) comprises an infrared camera (22) and a visible light emitter (28, 26) arranged so as to illuminate hot objects with visible light. This projection of visible light onto the scene, rather than observing it at infrared wavelengths converted to visible light by a display screen, makes viewing the scene more natural. Applications include medical imaging equipment, nightdriving systems, stage lights, and security lights. The profile of the beam of visible light can be modulated with a beam profiler (26) which may be an LCD. The infrared camera (22) and visible projector (28, 26) may be bore-sighted to facilitate overlying of the visible projected image onto the scene.
Abstract:
An improved apparatus for measuring the temperature of an object such as a food object. Also, a related method, container, transportation member and production line which utilizes this apparatus. The apparatus includes a coupling device for coupling radiation emanating from the object to at least a first radiation temperature measuring radiometer, and a first device for switching measurement circuitry between measuring the radiation temperature of at least a first reference temperature and the radiation temperature of the object.
Abstract:
A night vision device comprises a head-mounting unit, an image-acquiring unit, a light source, an image-acquiring unit, a display unit and a DC power source. The light source, the image-acquiring unit, and the display unit are arranged on the head-mounting unit and are powered by the DC power source through a connector of the head-mounting unit. The night vision device provides hand free convenience for user.
Abstract:
Single crystal SiC at least 200 micrometers thick is employed to detect electromagnetic radiation having a wavelength less than about 10 micrometers via an acoustic absorption mechanism. Applications include IR radiation sensing, contactless temperature sensing and an IR controlled varistor.
Abstract:
A solid state radiation detector provided with sub-stripe electrodes, which is capable of reading out stored charges efficiently. A first conductive layer, a recording photoconductive layer, a charge transport layer, a reading photoconductive layer, a second conductive layer provided with stripe electrodes composed of a large number of linear elements and sub-stripe electrodes composed of a large number of linear elements, an insulating layer, and a support body are arranged in accordance with the order listed above, light-shielding films are provided on portions on the support body, which correspond to the sub-stripe electrodes and the spaces between the stripe electrodes and the sub-stripe electrodes, and thus a solid state radiation detector is constituted. In this case, when a pair of the stripe electrode and the sub-strip electrode is defined as one cycle, the cycle is set to range from 10 nullm through 150 nullm.
Abstract:
A method and apparatus to reduce undesirable deficiencies in an image produced by a microbolometer array including multiple smaller arrays includes applying a separate bias pulse to each of the microbolometers in the smaller arrays and measuring a resulting signal corresponding to the applied bias pulse for each of the microbolometers using multiple measurement circuits associated with the smaller arrays during the frame time. Further, one or more known bias pulses are applied to the measurement circuitry during the frame time, one or more resulting calibration signals are measured, an offset parameter for each of the smaller arrays based on the corresponding measured resulting calibration signals is computed, and the measured resulting signal is corrected using the associated computed offset parameter to produce an output signal that reduces the undesirable deficiencies in the image produced by the array.