Concept

Optical telescope

Related publications (86)

Soft-tissue phase-contrast tomography with an x-ray tube source

We report the first experimental soft-tissue phase-contrast tomography results using a conventional x-ray tube source, with a millimeter-sized focal spot. The setup is based on a Talbot-Lau grating interferometer operated at a mean energy of 28 keV. We pre ...

2009

Two step process for the fabrication of diffraction limited concave microlens arrays

Hans Peter Herzig, Irène Antoinette Philipoussis, Toralf Scharf

A two step process has been developed for the fabrication of diffraction limited concave microlens arrays. The process is based on the photoresist filling of melted holes obtained by a preliminary photolithography step. The quality of these microlenses has ...

2008

Image-guided surgical microscope with mounted minitracker

Gaëtan Marti, Jaime Garcia Giraldez

A new image-guided microscope using augmented reality overlays has been developed. Unlike other systems, the novelty of our design consists in mounting a precise mini and low-cost tracker directly on the microscope to track the motion of the surgical tools ...

2007

Extended focus depth for Fourier domain optical coherence microscopy

Theo Lasser, Rainer Leitgeb, Martin Villiger, Adrian Bachmann, Lukas Steinmann

We report on a new detection scheme for Fourier domain optical coherence microscopy that exhibits high transverse resolution along an axially extended focal range. Nearly constant transverse resolution of ∼1.5 μm along a focal range of 200 μm is experiment ...

2006

Spectral reflection and dot surface prediction models for color halftone prints

Roger Hersch, Patrick Emmel, Frédérique Crété

The proposed new spectral reflection model enhances the classical Clapper-Yule model by taking into account the fact that proportionally more incident light through a given colorant surface is reflected back onto the same colorant surface than onto other c ...

2005

Metaphoric optical computing for fluid dynamics

Demetri Psaltis

We show that an optical pulse inherently computes three-dimensional classical fluid dynamics. Taking optical diffraction, dispersion and nonlinearity into account, one can define the metaphoric fluid density, velocity and vorticity in the optical pulse. We ...

2005

High light field confinement for Fluorescence Correlation Spectroscopy using a Solid Immersion Lens

Theo Lasser, Denis Martin, Ramachandra Rao

In this paper we present recent single molecule detection experiment using a solid immersion lens (SIL) for fluorescent correlation spectroscopy measurements. We compared the performance of the SIL in combination with an air objective (40×, numerical apert ...

2004

Apertureless SNOM

In this thesis a new scanning near field optical microscope based on an apertureless scattering technique is introduced for resolving optical properties of surfaces with lateral resolution reaching 10 nm and better. The construction of the instrument is ba ...

EPFL2004

Highly resolved in vivo 1H NMR spectroscopy of the mouse brain at 9.4 T

Rolf Gruetter

An efficient shim system and an optimized localization sequence were used to measure in vivo 1H NMR spectra from cerebral cortex, hippocampus, striatum, and cerebellum of C57BL/6 mice at 9.4 T. The combination of automatic first- and second-order shimming ...

Wiley-Blackwell2004

Point spread function model for microscopic image deconvolution in digital holographic microscopy

Christian Depeursinge, Etienne Cuche, Mihaela Marian

A simple model is proposed in order to evaluate the complex amplitude point spread function (intensity and phase) of a microscope objective. The model is based on the Fresnel diffraction theory and takes also into account the possible optical aberrations. ...

SPIE2003

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