Determining the efficiency of optical sources using the smartphone's ambient light sensor
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Determining the efficiency of optical sources using the smartphone's ambient light sensor

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Determining the efficiency of optical sources using the smartphone's ambient light sensor

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Sans, Jose Angel; Gea-Pinal, J.; Giménez, M.H.; Esteve Martínez, Anna Raquel; Solbes Matarredona, Jordi Perfil; Monsoriu Serra, Juan Antonio
This document is a artículoDate2017

Este documento está disponible también en : http://hdl.handle.net/10550/58282
This work reports the use of a smartphone's ambient light sensor as a valuable tool to study and characterize the efficiency of an optical source. Here, we have measured both luminous efficacy and efficiency of several optical sources (incandescent bulb and halogen lamp) as a function of the electric power consumed and the distance to the optical detector. The illuminance of LEDs as a function of the distance to the optical detector is characterized for different wavelength emissions. Analysis of the results confirms an inverse-square law of the illuminance with the detector-source distance and shows good agreement with values obtained by classical experiments. This experience will trigger awareness in students in terms of sustainability, light propagation and efficiency of different optical sources.

    Sans, Jose Angel Gea-Pinal, J. Giménez, M.H. Esteve Martínez, Anna Raquel Solbes Matarredona, Jordi Monsoriu Serra, Juan Antonio 2017 Determining the efficiency of optical sources using the smartphone's ambient light sensor European Journal Of Physics 38 025301
https://doi.org/10.1088/1361-6404/aa51a9

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