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A Light Pollution Simulator

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Calibrated climate-based lighting simulation models of buildings have the capacity to perform an essential role in postoccupancy evaluations, such as annual frequency assessments of daylighting quality and visual discomfort. However, in most postoccupancy ...

TAYLOR & FRANCIS INC2019

A smart luminaire able to change the direction of its light beam is installed in an office environment and compared to the available LEDs fixtures. Standard lighting measures are performed and a controlled user experiment is conducted, involving 22 subject ...

IOP Publishing Ltd2019

Spatial coherence properties of an LED-based illumination system for mask-aligner lithography

Hans Peter Herzig, Toralf Scharf, Wilfried Noell, Raoul Kirner, Johana Bernasconi

A high-power LED-based illumination system has been developed as a replacement for the mercury arc lamps used in mask-aligner lithography. LEDs are arranged in a grid array and placed in the entrance aperture of individual reflectors. Those reflectors decr ...

SPIE2019

LIGHTING CONTROL SYSTEM

Jean-Louis Scartezzini, Laurent Deschamps, Ali Motamed

In a control unit (8) for a lighting control system, wherein the control unit (8) is configured to calculate output values based on input values and the output values include control commands for a lighting installation (4, 6, 7.1, 7.2), the input values i ...

2018

High power modular LED-based illumination system for lithography applications

Hans Peter Herzig, Marcel Groccia, Toralf Scharf, Wilfried Noell, Raoul Kirner, Johana Bernasconi

Mask-aligner lithography is a technology used to transfer patterns with critical dimensions in the micrometer range from below 1 micron for contact printing to a dozen of microns in proximity printing. This technology is widely used in the fabrication of M ...

2018

Mask-aligner photolithography is a technology used to replicate patterns from a mask to a photosensitive substrate. It is widely used in the fabrication of MEMS and micro-optical components, and for other applications with dimensions in the micrometer rang ...

EPFL2018

Audemars Piguet - Electrochromic Glazing Study

Marilyne Andersen, Forrest Simon Webler, Victoria Eugenia Soto Magán

The purpose of this report is to detail the findings of a long-term evaluation study on the impact of installing electrochromic glazing in two different buildings owned by Audemars Piguet. The two locations under investigation are the APRP ateliers in Le L ...

2018

Lighting control system

Jean-Louis Scartezzini, Laurent Deschamps, Ali Motamed

2017

Swiss school typologies from a daylighting perspective between 1945 and 2015

Jean-Denis Bernard Marie Ghislain Thiry

The research consists of three successive and interdependent parts. The 1st part seeks to reconstruct the typological evolution of primary schools and their associated daylighting strategies between 1945 and 2015 in Switzerland – a country widely recognize ...

2017

Integrated Daylighting and Artificial Lighting Control based on High Dynamic Range Vision Sensors

Ali Motamed

One fifth of the electricity consumption of Swiss buildings is due to electric lighting. Integrated control of sun shading and artificial lighting can mitigate this demand while maintaining user comfort. However, the drawback of existing building control a ...

EPFL2017