Optical filter for smart windows with angle-selective light transmission

Zakirullin, R.S.

Full text «Opticheskii Zhurnal»

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Закируллин Р.С. Оптический фильтр для смарт-окна с угловым селективным светопропусканием // Оптический журнал. 2019. Т. 86. № 5. С. 23–29. http://doi.org/10.17586/1023-5086-2019-86-05-23-29

Zakirullin R.S. Optical filter for smart windows with angle-selective light transmission [in Russian] // Opticheskii Zhurnal. 2019. V. 86. № 5. P. 23–29. http://doi.org/10.17586/1023-5086-2019-86-05-23-29

For citation (Journal of Optical Technology):

R. S. Zakirullin, "Optical filter for smart windows with angle-selective light transmission," Journal of Optical Technology. 86(5), 278-283 (2019). https://doi.org/10.1364/JOT.86.000278

Abstract:

A grating optical filter for a smart window is presented, which provides dynamic control of the daylight and solar energy indoors throughout the year without human intervention and without the use of daylight-redirecting devices. Thin-layer gratings of alternating directionally transmissive and nontransmissive parallel bands on both surfaces of a window are arranged at an angle to the horizontal, taking into account the Sun’s trajectory relative to the window. The methods for calculating the optimal geometric parameters and angular characteristics of the filter for minimizing the light transmission for a specific date and time of day at a given latitude and longitude of the building and the azimuth of the window are described. A numerical simulation of the light transmission is performed, and the results are confirmed experimentally.

Keywords:

grating optical filter, angle-selective light transmission, dynamic control, daylight, solar energy, smart window

OCIS codes: 080.2740, 240.0310

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