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  • 27/11
    Diffraction effects in radiometry
    Essentially, classical radiometry relies on geometrical optics (to relate source radiance), geometrical aspects of an optical layout, and the irradiance at the detector.  One considers the propagation of radiation from points on the surface of the source to points on the surface of the
  • 27/11
    Detector metrology
    Improved detector technology in the past two decades has opened a new era in detector metrology of optical radiation measurements. Lower calibration and measurement uncertainties can be achieved with modern detector/radiometer standards than traditionally used source standards (blackbodies and
  • 27/11
    Absolute cryogenic infrared radiometry at the LBIR facility
    The Strategic Defense Initiative (SDI), and subsequently the Ballistic Missile Defense Organization (BMDO) of the U.S. Department of Defense (DoD), has motivated NIST’s work developing calibration methods and standards for space-based sensors used in missile defense. These on-board sensors
  • 27/11
    Transfer radiometers and reference detectors
    Use of these radiometers depends on a primary standard detector and a secondary transfer detector. We generally employ an absolute cryogenic radiometer (ACR) as the primary standard detector to calibrate the transfer detector, a Si:As blocked-impurity-band (BIB) detector. The transfer detector is
  • 27/11
    Infrared cryogenic blackbody broadband calibration
    The broadband chamber and the spectral calibration chamber at the LBIR facility are used for calibrating the customer cryogenic blackbodies. The chambers are cooled by closed cycle helium gas at 20 K to provide a background equivalent to space. The absolute cryogenic radiometers (ACRs) in these
  • 27/11
    cryogenic infrared radiometry at the LBIR facility
    The Strategic Defense Initiative (SDI), and subsequently the Ballistic Missile Defense Organization (BMDO) of the U.S. Department of Defense (DoD), has motivated NIST’s work developing calibration methods and standards for space-based sensors used in missile defense. These on-board sensors
  • 27/11
    Optical Sensor Systems
    After the Second World War and the partition of Germany, Carl Zeiss was also separated. In addition to the traditional site in Jena, there was now a new firm in Oberkochen. It was not until 1952 that the Optical Measuring Instruments division was able to offer the entire pre-war product line
  • 27/11
    Introduction of an Inductive Pickup Sensor
    An inductive pickup sensor employing an isolation transformer to achieve substantially improved immunity to capacitively-induced cross-talk signals is provided. A magnetic pickup coil is coupled to a spark plug wire to receive a spark signal. The spark signal developed
  • 27/11
    What is the sensor amplifier?
    What is the sensor amplifier? Sensor amplifier is based on the different requirements of the sensor, with the sensor and control measurement loop set. Fiber amplifier is to use and management of the fiber-optic signal transmission, specially set up according to the characteristics of the
  • 27/11
    Sensors Industry In China
    Sensor industry is at a critical stage of development from the traditional to the new sensor, it reflects the general trend of the development of new sensor miniaturization, multi-functional, digital, intelligent, systematic and network. China sensor production process of industrialization,
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