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Title: Passive optical element with selective angular reflection

Abstract

This work is related to the development of passive selective transmission materials that will contribute to regularize the solar thermal gain. We propose an original solution to the problem of seasonal control of energetic input into buildings through windows. A passive optical element with selective angular reflection is used to solve this problem. This optical element allows sunlight to enter windows during the fall and winter, whereas, owing to the different astronomical path of the sun, it stops and rejects direct sunlight by means of the optical effect called total internal reflection (TIR) during the central spring-Summer period. The purpose of this paper is to describe the optical element in some detail, to develop the principal design equations, and give the results of the optimization of optical and geometrical parameters.

Authors:
; ; ;
Publication Date:
Research Org.:
University of Quebec, INRS-Energy, C.P. 1020, Varennes, Quebec J0L 2P0
OSTI Identifier:
6894800
Resource Type:
Journal Article
Journal Name:
Appl. Opt.; (United States)
Additional Journal Information:
Journal Volume: 26:3
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; HEAT MIRRORS; DESIGN; LIGHT TRANSMISSION; REFLECTIVE COATINGS; WINDOWS; INCIDENCE ANGLE; OPTICAL EQUIPMENT; PERFORMANCE; REFLECTIVITY; SOLAR CONCENTRATORS; SOLAR CONTROL FILMS; SOLAR RADIATION; TRANSMISSION; COATINGS; EQUIPMENT; FILMS; MIRRORS; OPENINGS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; SOLAR EQUIPMENT; STELLAR RADIATION; SURFACE PROPERTIES; 141000* - Solar Collectors & Concentrators; 657000 - Theoretical & Mathematical Physics

Citation Formats

Tremblay, C, Rheault, F, Boulay, R, and Tremblay, R. Passive optical element with selective angular reflection. United States: N. p., 1987. Web. doi:10.1364/AO.26.000570.
Tremblay, C, Rheault, F, Boulay, R, & Tremblay, R. Passive optical element with selective angular reflection. United States. https://doi.org/10.1364/AO.26.000570
Tremblay, C, Rheault, F, Boulay, R, and Tremblay, R. 1987. "Passive optical element with selective angular reflection". United States. https://doi.org/10.1364/AO.26.000570.
@article{osti_6894800,
title = {Passive optical element with selective angular reflection},
author = {Tremblay, C and Rheault, F and Boulay, R and Tremblay, R},
abstractNote = {This work is related to the development of passive selective transmission materials that will contribute to regularize the solar thermal gain. We propose an original solution to the problem of seasonal control of energetic input into buildings through windows. A passive optical element with selective angular reflection is used to solve this problem. This optical element allows sunlight to enter windows during the fall and winter, whereas, owing to the different astronomical path of the sun, it stops and rejects direct sunlight by means of the optical effect called total internal reflection (TIR) during the central spring-Summer period. The purpose of this paper is to describe the optical element in some detail, to develop the principal design equations, and give the results of the optimization of optical and geometrical parameters.},
doi = {10.1364/AO.26.000570},
url = {https://www.osti.gov/biblio/6894800}, journal = {Appl. Opt.; (United States)},
number = ,
volume = 26:3,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 1987},
month = {Sun Feb 01 00:00:00 EST 1987}
}