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Related publications (99)

Direct-write diffracting tubular optical components using femtosecond lasers

Over the last decade, femtosecond lasers have been used extensively for the fabrication of optical elements via direct writing and in combination with chemical etching. These processes have been an enabling technology for manufacturing a variety of devices ...

SPIE-INT SOC OPTICAL ENGINEERING2014

Confocal polarization imaging in high-numerical-aperture space

Carlos Alberto Macias Romero

In this work we describe theoretical and experimental physical aspects of high-resolution imaging polarimetry and its application to polarization-multiplexed encoding. We theoretically demonstrate that it is possible to resolve the orientation of two fixed ...

Optical Soc Amer2014

Longitudinal-differential phase distribution near the focus of a high numerical aperture lens: Study of wavefront spacing and Gouy phase

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

We present a longitudinal-differential (LD) phase distribution near the focus of a high numerical aperture (NA=0.9) aplanatic lens illuminated with a linearly polarized monochromatic plane wave. The Richards and Wolf method is used to compute field distrib ...

Taylor & Francis2013

Simple and easily controllable parabolic-shaped microlenses printed on polymeric mesas

Jürgen Brugger, Cristina Martin Olmos, Joo Yeon Kim

A simple and easy shape-controllable approach is demonstrated for the fabrication of parabolic-shaped polymer microlenses (mu-lenses), which are widely used in bio-imaging systems such as microfluidic and lab-on-a-chip systems for improving the image quali ...

Royal Soc Chemistry2013

Multiple-Field Approach for Aberration Correction in Miniature Imaging Systems Based on Wafer-Level Production

Hans Peter Herzig, Toralf Scharf, Nicolas Bongard

IIn mobile imaging systems, the most difficult element to integrate is the objective lens. Here we present an intermediate approach between the costly traditional objectives and the low-resolution objectives inspired by the compound eyes of insects. Our mu ...

SPIE Digital Library2013

Curved Transflective Holographic Screens for Head-Mounted Display

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

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

Field curvature correction in multichannel miniature imaging systems suited for wafer-level production

Hans Peter Herzig, Toralf Scharf, Nicolas Bongard

Using multiple optical channels increases the number of design possibilities for the objectives of mobile imaging devices. For easy wafer-level fabrication, we start from a single optical element-a monocentric plano-convex lens. The quality of the areal im ...

Spie-Soc Photo-Optical Instrumentation Engineers2013

Quantitative lateral and axial flow imaging with optical coherence microscopy and tomography

Theo Lasser, Arno Pino Bouwens, Tristan Bolmont, Daniel Pawel Szlag

Optical coherence tomography (OCT) and optical coherence microscopy (OCM) allow the acquisition of quantitative three-dimensional axial flow by estimating the Doppler shift caused by moving scatterers. Measuring the velocity of red blood cells is currently ...

Optical Society of America2013

Polymer based single mode optical waveguide for spectroscopy applications

Hans Peter Herzig, Irène Antoinette Philipoussis, Toralf Scharf, Maurine Malak Karam Awadallah

In this work, we present for the first time, two dimensional low loss single mode optical waveguides fabricated with EPO materials. The waveguide geometry has a rectangular shape and it is buried between two EPOCLAD layers. Its refractive index distributio ...

Spie-Int Soc Optical Engineering2013

Temporally aliased video microscopy: an undersampling method for in-plane modal analysis of microelectromechanical systems

Martinus Gijs, Christophe Yamahata, Marc Stranczl

A simple optical method is proposed for performing in-plane experimental modal analysis of micromachined structures with a conventional charge-coupled device (CCD) camera. The motion of a micromechanical device actuated by high frequency sinusoidal forces ...

Institute of Electrical and Electronics Engineers2012

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