Publications de Eric Tremblay | EPFL Graph Search

Individualized prediction of the risk of liver-related death in patients with alcoholic cirrhosis

ELSEVIER SCIENCE BV2018

Method and apparatus for head worn display with multiple exit pupils

A method for displaying an image viewable by an eye, the image being projected from a portable head worn display, comprises steps of: emitting a plurality of light beams of wavelengths that differ amongst the light beams; directing the plurality of light b ...

2016

Demonstration of a 5x5 cm(2) self-tracking solar concentrator

Volker Günter Zagolla, Eric Tremblay

Solar concentration is using optics in order to minimize the amount of expensive photovoltaic cell material needed. For concentration factors higher than approximately 4, tracking the sun's position is needed to keep the focal spot on the solar cell. Based ...

Spie-Int Soc Optical Engineering2015

Transflective holographic film for head worn display

Jürgen Brugger, Jonas Grossenbacher, Victor Javier Cadarso Busto, Christophe Moser, Eric Tremblay

A display panel assembly comprises a transflective holographic screen, i.e., a transparent screen that reflects light from a projection system, comprising at least a volume hologram, a first protective element and a second protective element, each arranged ...

2015

Self-tracking phase change concentrator device demonstrator

Volker Günter Zagolla, Eric Tremblay

Concentration photovoltaic systems uses free-space optics to concentrate sunlight onto photovoltaic cells, using mechanical trackers to accurately track the sun's position and keep the focal spot on the PV cell. We recently proposed and demonstrated a proo ...

Spie-Int Soc Optical Engineering2014

Demonstration and future potential of a self-tracking phase change actuator

Volker Günter Zagolla, Eric Tremblay

State-of-the-art concentrators use free-space optics to concentrate sunlight onto photovoltaic cells. To achieve high concentration factors it is necessary to track the sun's position. In current systems, mechanical actuators keep the focal spot in the sol ...

Spie-Int Soc Optical Engineering2014

Self-tracking solar concentrator with an acceptance angle of 32 degrees

Volker Günter Zagolla, Christophe Moser, Eric Tremblay

Solar concentration has the potential to decrease the cost associated with solar cells by replacing the receiving surface aperture with cheaper optics that concentrate light onto a smaller cell aperture. However a mechanical tracker has to be added to the ...

Optical Society of America2014

Curved Holographic Combiner for Color Head Worn Display

Arnaud Mader, Jürgen Brugger, Jonas Grossenbacher, Victor Javier Cadarso Busto, Seyedpayam Vahdati, Christophe Moser, Eric Tremblay

A volume hologram recorded with a lens array is proposed as a color transflective screen for Head Worn Display (HWD) systems. Design, fabrication as well as proof of concept are reported. Light from a single MEMS-based projector is efficiently diffracted t ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Proof of principle demonstration of a self-tracking concentrator

Volker Günter Zagolla, Christophe Moser, Eric Tremblay

We present to the best of our knowledge the first successful demonstration of a planar, self-tracking solar concentrator system capable of a 2-dimensional angular acceptance of over 40 degrees. The light responsive mechanism allows for efficient waveguide ...

Optical Society of America2014

Efficiency of a micro-bubble reflector based, self-adaptive waveguide solar concentrator

Volker Günter Zagolla, Eric Tremblay

State of the art solar concentrators use free-space, non-imaging optics to concentrate sunlight. Mechanical actuators keep the focal spot on a small solar cell by tracking the sun's position. Planar concentrators emerged recently that employ a waveguide sl ...

Spie-Int Soc Optical Engineering2013

Self-tracking solar concentrator

Christophe Moser, Eric Tremblay

A system for capturing solar light of the sun, whereby the solar light comprises a short wavelength light component and a long wavelength light component. The system comprises at least a lens (101), a light- guide (102), and a self-adaptive coupling featur ...

2013

Curved Transflective Holographic Screens for Head-Mounted Display

Arnaud Mader, Jürgen Brugger, Jonas Grossenbacher, Victor Javier Cadarso Busto, Seyedpayam Vahdati, Christophe Moser, Eric Tremblay

A volume hologram recorded with a lens array is proposed as a transflective screen for Head Worn Display (HWD) systems. Design, fabrication as well as proof of concept are reported. Light from a projection system, with similar properties to one mounted on ...

Spie-Int Soc Optical Engineering2013

Light induced fluidic waveguide coupling

Volker Günter Zagolla, Christophe Moser, Eric Tremblay

We report on the development of an opto-fluidic waveguide coupling mechanism for planar solar concentration. This mechanism is self-adaptive and light-responsive to efficiently maintain waveguide coupling and concentration independent of incoming light's d ...

Optical Soc Amer2012

Reactive self-tracking solar concentrators: concept, design, and initial materials characterization

Eric Tremblay

Étendue limits angular acceptance of high-concentration photovoltaic systems and imposes precise two-axis mechanical tracking. We show how a planar micro-optic solar concentrator incorporating a waveguide cladding with a nonlinear optical response to sunli ...

Optical Society of America2012