Concept

Ray tracing (physics)

Publications associées (60)

Advanced passive micro-optical elements

Micro-optical elements are optical elements having size or details in the range of the micrometer scale. The emergency of such elements is strongly linked to the development made in the fabrication techniques during the nineties to follow the still actual ...

Institut de Microtechnique, Université de Neuchâtel2008

Small Reconstruction Distance in Convolution Formalism

Christian Depeursinge, Tristan Colomb, Frédéric Montfort

Different numerical wavefront propagations in Fresnel approximation are proposed in digital holography. Standard convolution formalism fails for small reconstruction distances. We developed a simplified convolution formalism that is equivalent to the angul ...

OSA2008

Advantages of digital holographic microscopy for real-time full field absolute phase imaging

Christian Depeursinge, Tristan Colomb, Pierre Marquet, Jonas Kühn, Florian Charrière

Different interferometric techniques were developed last decade to obtain full field, quantitative, and absolute phase imaging, such as phase-shifting, Fourier phase microscopy, Hilbert phase microscopy or digital holographic microscopy (DHM). Although, th ...

SPIE2008

Monte Carlo simulations of quantum dot solar concentrators: ray tracing based on fluorescence mapping

Jean-Louis Scartezzini, Andreas Schueler, André Gabriel Kostro, Charu Datta Galande

One promising application of semiconductor nanostructures in the field of photovoltaics might be quantum dot solar concentrators. Quantum dot containing nanocomposite thin films are synthesized at EPFL-LESO by a low cost sol-gel process. In order to study ...

SPIE2008

A complete digital optics applied to digital holographic microscopy: Application to chromatic aberration compensation

Christian Depeursinge, Tristan Colomb, Frédéric Montfort, Jonas Kühn, Florian Charrière

In optics, optical elements are used to transform, to filter or to process physical wavefronts in order to magnify images, compensate for aberration or to suppress unwanted diffracted order for example. Because digital holography provides numerical wavefro ...

SPIE2007

On-site performance of electrochromic glazings coupled to an anidolic daylighting system

Jean-Louis Scartezzini, Jessen Page, Nicolas Morel

This work takes benefit from two advanced building technologies through the integration of an anidolic daylighting system and an electro-chromic glazing in a building facade for achieving an optimal control of the daylight flux entering in an office room. ...

2007

Principles of Monte-Carlo ray-tracing simulations of quantum dot solar concentrators

Andreas Schueler, André Gabriel Kostro, Estelle De Chambrier, Charu Datta Galande

A tool for ray tracing simulations of quantum dot solar concentrators is developed on the basis of Monte-Carlo methods that are applied to polarization-dependent reflection/transmission at interfaces, photon absorption by the semiconductor nanocrystals and ...

Tsinghua University Press, Tsinghua University Press, Beijing 100084, Peoples R China2007

Recent Progress and Perspectives in Digital Holographic Microscopy

Christian Depeursinge

Recent developments in Digital Holographic Microscopy (DHM) have permitted to achieve imaging accuracies and resolutions down to the nano-range. This result could be obtained by careful control of all parameters involved in the wavefront reconstruction. ...

OSA2007

Étude des fondements physiques possibles des concepts numériques utilisés dans les méthodes d'acoustique géométrique

Thomas Guignard

The subject of the work presented here is the study of the acoustical ray method, which aims at describing a pressure field by an analogy with light rays. The concept of a wave is therefore replaced by the concept of "acoustical rays", whose paths through ...

EPFL2006

Emerging light fields from liquid crystal microlenses

Toralf Scharf

Liquid crystal (LC) microlenses have a variable focal length with a change in applied voltage. These lenses have suitable dimensions and focal length variations for a wide range of applications where the absence of moving parts is favored. In this article ...

2006

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