From university to industry - challenges in upscaling optical microstructures for daylight redirection in buildings

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Multi-criteria analysis for the integrated performance assessment of complex fenestration systems

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Chantal Basurto Dávila

Complex fenestration systems (CFS) designed to collect and redirect daylight from the sky-vault are generally placed on the upper part of a window in order to improve the distribution of indoor daylight. Due to their additional function as solar protection ...

Taylor & Francis2017

Perceptual Dynamics of Daylight in Architecture

Siobhan Francois Rockcastle

In our experience of daylit architecture, our visual perception is greatly impacted by the ephemeral and inherently dynamic conditions of the surrounding environment. Driven by changes in sky type, time-of-day, and time-of-year, these variable conditions c ...

EPFL2017

Monitoring and rendering of visual and photo-biological properties of daylight-redirecting systems

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Mirjam Münch, Apiparn Borisuit, Anothai Thanachareonkit

We previously developed a Camera-Like Light Sensor (CLLS) to record images using a novel High Dynamic Range (HDR) imaging vision sensor. The device was equipped with customized filters for adapting the camera’s spectral sensitivity to both photopic and cir ...

Pergamon-Elsevier Science Ltd2016

Microstructured glazing for daylighting, glare protection, seasonal thermal control and clear view

André Gabriel Kostro

The appropriate choice of glazing in a facade depends on many factors. They include amongst other criteria: location, orientation, climatic condition, energetic efficiency, usage of the building, required user comfort, and the architectural concept. On the ...

EPFL2015

Annual Performance Assessment of Complex Fenestration Systems in Sunny Climates Using Advanced Computer Simulations

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Chantal Basurto Dávila

Complex Fenestration Systems (CFS) are advanced daylighting systems that are placed on the upper part of a window to improve the indoor daylight distribution within rooms. Due to their double function of daylight redirection and solar protection, they are ...

2015

On advanced daylighting simulations and integrated performance assessment of complex fenestration systems for sunny climates

Chantal Basurto Dávila

The inclusion of daylight in buildings represents several benefits: its use not only signifies a reduction in the building energy consumption through the compensation of electric lighting, it also has positive effects in the execution of human activities. ...

EPFL2014

Recommended Practice for Daylighting Buildings

Marilyne Andersen, Joppe Willem Bos

This Recommended Practice conveniently gathers the basic data and techniques which help those concerned with the design of buildings and lighting systems understand and appreciate the opportunities and constraints inherent in daylighting. Daylighted buildi ...

IES - Illuminating Engineering Society2013

Electrically tunable optofluidic light switch for reconfigurable solar lighting

Demetri Psaltis, Wuzhou Song

We describe a reconfigurable lighting system for indoor solar illumination which provides a new way for solar energy conservation. We have experimentally demonstrated an electrically tunable optofluidic light switch which takes the key role for the reconfi ...

Royal Society of Chemistry2013

Daylighting Metrics: Is there a relation between Useful Daylight Illuminance and Daylight Glare Probabilty?

Marilyne Andersen, Nicolas Roy

The establishment of climate-based daylight modeling within research and practice has led to a fundamental reassessment of both the basis and purpose of daylight metrics. Whilst there is no consensus yet on the precise nature of the metric(s) that should r ...

2012

Ray-tracing simulation of complex fenestration systems based on digitally processed BTDF data

Jean-Louis Scartezzini, Jérôme Henri Kämpf

The implementation of Complex Fenestration Systems (CFS) in the day-to-day life by practitioners, such as lighting designers, architects and façade makers is not an easy task. However, computer design tools can reinforce their usage through the determinati ...

EPFL2011