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Indoor illumination for the stimulat...

Lira-Oliver, Adriana.

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Indoor illumination for the stimulation of the human circadian system: Assessing the interaction of spectral and intensity characteristics of light, optical properties of materials, and surface texture.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Indoor illumination for the stimulation of the human circadian system: Assessing the interaction of spectral and intensity characteristics of light, optical properties of materials, and surface texture./
Author:	Lira-Oliver, Adriana.
Description:	208 p.
Notes:	Adviser: D. Michelle Addington.
Contained By:	Dissertation Abstracts International68-01A.
Subject:	Architecture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3249796

Indoor illumination for the stimulation of the human circadian system: Assessing the interaction of spectral and intensity characteristics of light, optical properties of materials, and surface texture.
Lira-Oliver, Adriana.

Indoor illumination for the stimulation of the human circadian system: Assessing the interaction of spectral and intensity characteristics of light, optical properties of materials, and surface texture. - 208 p.

Adviser: D. Michelle Addington.

Thesis (D.Des.)--Harvard University, 2006.

An emerging area of research within biology has discovered that visible light entering the eye does not only enable sight, but also affects many psycho-physical human processes regulated by the circadian system: our "biological clock." The specific light characteristics, such as spectrum, intensity, and spatial distribution that stimulate the human visual system are very different from those needed to stimulate the circadian system. The characteristics of light that stimulate both the visual and circadian systems are present in natural light, but indoor illumination systems have historically been designed to provide visual clarity only. Although many advances have been made to improve the visual clarity provided by artificial illumination systems, such improvements do not necessarily enhance stimulation of the circadian system because different characteristics of light are necessary for both biological systems to work optimally. Generally, this thesis proposes a re-conceptualization of interior lighting in architectural environments from a singular concern with visual clarity to a more robust concept of light, material, and space whose characteristics can be calibrated to positively stimulate both the human visual and circadian systems. This dissertation evaluates the interaction of materials that have different optical qualities and textures (such as metals and opaque non-metals) with light for the strategic and passive spatial control of the spectrum and intensity of indoor illumination. A simulated experiment is proposed for this evaluation. A computer lighting simulation of a cubic room was performed in order calculate the spectrum and intensity of light, at a specific point in space, when changing material optical properties and texture.Subjects--Topical Terms:

523581
Architecture.

Indoor illumination for the stimulation of the human circadian system: Assessing the interaction of spectral and intensity characteristics of light, optical properties of materials, and surface texture.
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502 $a Thesis (D.Des.)--Harvard University, 2006.
520 $a An emerging area of research within biology has discovered that visible light entering the eye does not only enable sight, but also affects many psycho-physical human processes regulated by the circadian system: our "biological clock." The specific light characteristics, such as spectrum, intensity, and spatial distribution that stimulate the human visual system are very different from those needed to stimulate the circadian system. The characteristics of light that stimulate both the visual and circadian systems are present in natural light, but indoor illumination systems have historically been designed to provide visual clarity only. Although many advances have been made to improve the visual clarity provided by artificial illumination systems, such improvements do not necessarily enhance stimulation of the circadian system because different characteristics of light are necessary for both biological systems to work optimally. Generally, this thesis proposes a re-conceptualization of interior lighting in architectural environments from a singular concern with visual clarity to a more robust concept of light, material, and space whose characteristics can be calibrated to positively stimulate both the human visual and circadian systems. This dissertation evaluates the interaction of materials that have different optical qualities and textures (such as metals and opaque non-metals) with light for the strategic and passive spatial control of the spectrum and intensity of indoor illumination. A simulated experiment is proposed for this evaluation. A computer lighting simulation of a cubic room was performed in order calculate the spectrum and intensity of light, at a specific point in space, when changing material optical properties and texture.
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