There are lots of information regarding light sources, spectral responsivity, ambient light, standard light sources, light sensors, light, and spectral responsivity curve are presented in this paper. Inside the paper we can learn things related to sensor, spectral, intensity, photometer, sensors, and spectrum irradiance measurements.
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Actiwatch-L Characterization of Light Sensor Performance for Three Models of Actiwatch Actiwatch-64, Actiwatch 2 and Actiwatch Spectrum Mary Coughlin RN, MS, NNP, Global Clinical Services Managers, Children’s Medical Ventures Introduction Actiwatch 2 Actiwatch Spectrum Respironics is oﬀering three wrist-worn activity loggers, the Actiwatch 2, Actiwatch Spectrum and Actiwatch-L. Figure 4: Actiwatch Spectrum’s free-living white light illuminance measurement performance as compared to a photometer as well as colored light irradiance measurements of those white light sources Actiwatch Spectrum colored light measurements show that commonly encountered light sources contain diﬀering levels of colored light.
Furthermore, the paper gives you information around measurement performance, measurements, performance, the spectral responsivity, range, and light measurement.