Enhanced human centric lighting - Individual automated lighting condition by means of a wearable light dosimeter

Rudawski, Frederic; Knoop, Martine

The aim of this research is to develop a wearable daytime light dosimeter that can be implemented in a lighting solution, to offer individual, automated and optimized lighting conditions. To do so, the dosimeter is orientated towards the standard CIE S 026/E:2018 “CIE System for Metrology of Optical radiation for ipRGC-Influenced Responses to Light”, considering the spectral sensitivities of the different retinal receptors and the impact of the field of view. For optimized lighting conditions, the luminaire’s luminous intensity distribution must be adaptable in spectral power distribution and in direction. If the optimal spectral light incidence distribution for ipRGC-influenced responses to light purposes is known, the required luminous intensity distribution of a luminaire for a certain room geometry with certain room surface reflection values can be calculated. For this purpose, a spectral radiosity algorithm is in development. With a feedback loop between luminaire and dosimeter the light distribution can be continuously adapted as required.

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Rudawski, Frederic / Knoop, Martine: Enhanced human centric lighting - Individual automated lighting condition by means of a wearable light dosimeter. 2019.

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