A spectroradiometer is a light measurement tool that is able to measure both the wavelength and amplitude of the light emitted from a light source. Spectrometers discriminate the wavelength based on the position the light hits at the detector array allowing the full spectrum to be obtained with a single acquisition. Most spectrometers have a base measurement of counts which is the un-calibrated reading and is thus impacted by the sensitivity of the detector to each wavelength. By applying a calibration, the spectrometer is then able to provide measurements of spectral irradiance, spectral radiance and/or spectral flux. This data is also then used with built in or PC software and numerous algorithms to provide readings or Irradiance (W/cm2), Illuminance (lux or fc), Radiance (W/sr), Luminan
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| - مقياس الإشعاعية الطيفية (ar)
- Spectroradiomètre (fr)
- Spectroradiometer (en)
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| - مقياس الإشعاعية الطيفية(بالإنجليزية: Spectroradiometer): هو جهاز مصمم لقياس توزيع القدرة الطيفية للمنابع الضوئية. وهو يعمل بشكل مشابه للمضواء الطيفي ضمن المجال المرئي للأشعة الكهرومغناطيسية. وتستخدم عادة لتقييم وتصنيف الأضواء من أجل بيعها بالنسبة للمصنع، أو من أجل تأكيد مواصفاتها من قبل المستهلك. يستخدم مقياس الإشعاعية الطيفية لمعايرة شاشات الكرستال السائل LCD و أنبوب الأشعة المهبطية CRT في الحواسيب المحمولة و أجهزة بث مرئي فائق الجودة HDTV. تقاس قيم الفضاء اللوني وتقارن مع القيم المعيارية للتأكد من أن الألوان المعروضة صحيحة، وإزالة تفاوت الألوان بين الشاشات المتعددة. (ar)
- Un spectroradiomètre est un instrument qui permet de mesurer la puissance du flux de rayonnement électromagnétique en fonction de la longueur d'onde. Les spectroradiomètres peuvent couvrir en fonction de leur résolution spectrale, un domaine plus ou moins étendu de longueurs d'onde. Ils peuvent travailler dans l'ultraviolet, le visible et l'infrarouge.Il existe plusieurs catégories de spectroradiomètres : (fr)
- A spectroradiometer is a light measurement tool that is able to measure both the wavelength and amplitude of the light emitted from a light source. Spectrometers discriminate the wavelength based on the position the light hits at the detector array allowing the full spectrum to be obtained with a single acquisition. Most spectrometers have a base measurement of counts which is the un-calibrated reading and is thus impacted by the sensitivity of the detector to each wavelength. By applying a calibration, the spectrometer is then able to provide measurements of spectral irradiance, spectral radiance and/or spectral flux. This data is also then used with built in or PC software and numerous algorithms to provide readings or Irradiance (W/cm2), Illuminance (lux or fc), Radiance (W/sr), Luminan (en)
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| - مقياس الإشعاعية الطيفية(بالإنجليزية: Spectroradiometer): هو جهاز مصمم لقياس توزيع القدرة الطيفية للمنابع الضوئية. وهو يعمل بشكل مشابه للمضواء الطيفي ضمن المجال المرئي للأشعة الكهرومغناطيسية. وتستخدم عادة لتقييم وتصنيف الأضواء من أجل بيعها بالنسبة للمصنع، أو من أجل تأكيد مواصفاتها من قبل المستهلك. يستخدم مقياس الإشعاعية الطيفية لمعايرة شاشات الكرستال السائل LCD و أنبوب الأشعة المهبطية CRT في الحواسيب المحمولة و أجهزة بث مرئي فائق الجودة HDTV. تقاس قيم الفضاء اللوني وتقارن مع القيم المعيارية للتأكد من أن الألوان المعروضة صحيحة، وإزالة تفاوت الألوان بين الشاشات المتعددة. (ar)
- Un spectroradiomètre est un instrument qui permet de mesurer la puissance du flux de rayonnement électromagnétique en fonction de la longueur d'onde. Les spectroradiomètres peuvent couvrir en fonction de leur résolution spectrale, un domaine plus ou moins étendu de longueurs d'onde. Ils peuvent travailler dans l'ultraviolet, le visible et l'infrarouge.Il existe plusieurs catégories de spectroradiomètres :
* spectroradiomètre à prisme de faible résolution spectrale ;
* spectroradiomètre à réseau (un ou deux réseaux en série en fonction de la résolution spectrale désirée) ;
* spectroradiomètre à CVF (Filtre Circulaire Variable) permettant de couvrir un domaine étendu de longueur d'onde à très grande vitesse. Ce spectroradiomètre est principalement utilisé pour des applications spatiales ou militaires ;
* spectroradiomètre à transformée de Fourier pour de très haute résolution, et utilisé pour l'analyse de gaz atmosphérique. (fr)
- A spectroradiometer is a light measurement tool that is able to measure both the wavelength and amplitude of the light emitted from a light source. Spectrometers discriminate the wavelength based on the position the light hits at the detector array allowing the full spectrum to be obtained with a single acquisition. Most spectrometers have a base measurement of counts which is the un-calibrated reading and is thus impacted by the sensitivity of the detector to each wavelength. By applying a calibration, the spectrometer is then able to provide measurements of spectral irradiance, spectral radiance and/or spectral flux. This data is also then used with built in or PC software and numerous algorithms to provide readings or Irradiance (W/cm2), Illuminance (lux or fc), Radiance (W/sr), Luminance (cd), Flux (Lumens or Watts), Chromaticity, Color Temperature, Peak and Dominant Wavelength. Some more complex spectrometer software packages also allow calculation of PAR μmol/m2/s, Metamerism, and candela calculations based on distance and include features like 2- and 20-degree observer, baseline overlay comparisons, transmission and reflectance. Spectrometers are available in numerous packages and sizes covering many wavelength ranges. The effective wavelength (spectral) range of a spectrometer is determined not only by the grating dispersion ability but also depends on the detectors' sensitivity range. Limited by the semiconductor's band gap the silicon-based detector responds to 200-1100 nm while the InGaAs based detector is sensitive to 900-1700 nm (or out to 2500 nm with cooling). Lab/Research spectrometers often cover a broad spectral range from UV to NIR and require a PC. There are also IR Spectrometers that require higher power to run a cooling system. Many Spectrometers can be optimized for a specific range i.e. UV, or VIS and combined with a second system to allow more precise measurements, better resolution, and eliminate some of the more common errors found in broadband system such as stray light and lack of sensitivity. Portable devices are also available for numerous spectral ranges covering UV to NIR and offer many different package styles and sizes. Hand held systems with integrated displays typically have built in optics, and an onboard computer with pre-programmed software. Mini spectrometers are also able to be used hand held, or in the lab as they are powered and controlled by a PC and require a USB cable. Input optics may be incorporated or are commonly attached by a fiber optic light guide. There are also micro Spectrometers smaller than a quarter that can be integrated into a system, or used stand alone. (en)
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