Abstract

A method to optimize the angular selective filtering of direct solar radiation by minimization of light transmission of a window at a preset date and time of day, taking into account the orientation of the window to the cardinal, the latitude of the building, and the seasonal and daily distribution of solar radiation intensity, is described. Optimization is carried out using an optical filter with two thin-film surface gratings with alternating transmissive and non-transmissive parallel strips. The optimal slope angle of the strips to horizontal, the widths of the strips, the shift of input and output gratings relative to each other, and the angular characteristics of light transmittance are calculated.

© 2018 Optical Society of America

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