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• American Institute of Physics
• American National Institute of Standards (ANSI)
• Bundesandstalt fur Materialprung (BAM)
• British Standards Institution (BSI)
• Centre National d' Études Spatiales (CNES)
• Committee for Optical Radiation Measurement (CORM)
• Deutscher Verbrand fr Materialforschung und-pr fung
• Illumination Engineering Society of North America (IESNA)
• Institute of Physics (IOP) UK
• International Commission of Illumination (CIE)
• International Society for Optical Engineering (SPIE)
• Laboratoire National d' Essais
• National Center for Scientific Research (CNRS)
• National Institute of Standards and Technology (NIST)
• National Physical Laboratory (UK)
• Office National d’Etudes et de Recherches Aérospatiales (ONERA)
• Optical Society of America (OSA)
• Physaikalisch Techniche Bundesansealt (PTB)
• Society of Automotive Engineers (SAE)
• Society for Information Display (SID)
• Video Electronics Standards Association (VESA)

 

Providers of integrating spheres, spheres, diffuse reflectance, luminance, luminous intensity, metrology, optical calibration, reflectance standards, radiance standards, flux standards, spectral flux, led power measurement, laser diode measurement, illuminance, radiance, irradiance, calibration, optowhite, Zenith® , uniform source, goniometer, colorimeter, white coating, PTFE, BaS04, analytical laboratory, electronic imaging, led flux, lighting, optics, photographic imaging, remote sensing, flat fielding, camera calibration
 
integrating spheres, spheres, diffuse reflectance, luminance, luminous intensity, metrology, optical calibration, reflectance standards, radiance standards, flux standards, spectral flux, led power measurement, laser diode measurement, illuminance, radiance, irradiance, calibration, optowhite, Zenith® , uniform source, goniometer, colorimeter, white coating, PTFE, BaS04, analytical laboratory, electronic imaging, led flux, lighting, optics, photographic imaging, remote sensing, flat fielding, camera calibration

Le lumen est le flux lumineux émis dans l'angle solide d'un stéradian par une source ponctuelle uniforme ayant une intensité d'un candela. En d'autre terme, 1 candela = 1 lumen/stéradian
Le lumen est une valeur pondérée du Watt. Le flux lumineux d'une source est calculé en intégrant le flux énergétique spectral ( Watt par unité de longueur d'onde ) pondéré par la courbe CIE de réponse de l'oil ( V(l)). Cette valeur intégrée représente le nombre total de lumens émis par la source.

 

 

 

integrating spheres, spheres, diffuse reflectance, luminance, luminous intensity, metrology, optical calibration, reflectance standards, radiance standards, flux standards, spectral flux, led power measurement, laser diode measurement, illuminance, radiance, irradiance, calibration, optowhite, Zenith® , uniform source, goniometer, colorimeter, white coating, PTFE, BaS04, analytical laboratory, electronic imaging, led flux, lighting, optics, photographic imaging, remote sensing, flat fielding, camera calibration
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