Fisba Optik AG

Sankt Gallen, Switzerland

Fisba Optik AG

Sankt Gallen, Switzerland
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Vogt C.,IPH | Fahnle O.,FISBA OPTIK AG | Rascher R.,IPH
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2017

While setting up grinding processes for optics fabrication, the optimum tool and process parameters have to be chosen. Unfortunately, datasheets of commercial grinding tools contain only information about grit type and size, bond material, tool shape etc., leaving out any information about process parameters to be applied or tool lifetime or performance. For this reason, tools and machining parameters are commonly adjusted during iterative experimental test runs using actual workpieces from production batches which is time consuming, expensive and without guarantee that the optimum set of machining parameters are achieved. In this paper we present a method to determine grinding tools process window for a given workpiece material. That way, ideal machining parameters can be determined offline for maximum reliability and productivity. In addition, the gained data provides the basis to identify the most suitable grinding tool for the desired application. © 2017 SPIE.

Hamel P.,Ecole Polytechnique Federale de Lausanne | Rachet B.,Ecole Polytechnique Federale de Lausanne | Werner M.,Ecole Polytechnique Federale de Lausanne | Grossenbacher M.,Ecole Polytechnique Federale de Lausanne | And 4 more authors.
Optics Letters | Year: 2011

We present an optical trapping system combining individually addressable multiple laser traps with fluorescence spectroscopy. An in-line set of 64 near-IR laser diodes is used to create a line of individually addressable traps inside a microfluidic chip. This system is completed by an excitation/detection line for spectrally resolved fluorescence imaging of trapped particles. Highly parallel trapping in a constant flow (up to a few millimeters per second), fast particle handling rates (up to a few particles per second), and the possibility of recording fluorescence spectra of trapped objects lead to a performing bioanalytical platform, e.g., for highly parallel analysis and sorting. © 2011 Optical Society of America.

Agency: European Commission | Branch: FP7 | Program: CP | Phase: FoF.NMP.2010-3 | Award Amount: 3.74M | Year: 2010

To meet the future market needs by innovative approaches using state of the art machining equipment the overall goal of the project WaferLevelOptics is the development of a new production platform for wafer scale moulded glass optics.

Agency: European Commission | Branch: FP7 | Program: BSG-SME | Phase: SME-2012-1 | Award Amount: 1.41M | Year: 2012

The APACOS project aims at developing solutions for the automated assembly of laser systems. The solutions include new laser sources designed for automated assembly, as well as an industrial micro assembly system that will be mechanically enhanced by an ultra-precise micromanipulator for additional degrees of freedom. Fully automated alignment and bonding strategies for optical components will be implemented in APACOS in order to prove the production concept. Therefore, two European SMEs from the laser manufacturing industry, Modulight and Altechna R&D, will develop novel laser sources with high market potential. Altechna aims at a high-power yellow laser based on OPSL technology with perspectives in the markets of health care and life sciences. Modulight pursues the development of a single-emitter based product platform for visible green and yellow lasers used for projection and display applications. The developments will be supported by the Optoelectronics Research Centre at Tampere University of Technology, a leading European research institution in the field of laser sources. SmarAct, an SME from Germany, is provider of precision technology such as multi-axes micromanipulators with nanometer precision. In APACOS a flexure-based micromanipulator will be integrated into an industrial micro assembly system by Rohwedder Micro Assembly, a company with long year experience in developing industrial micro assembly systems and also a partner in the project. The integration will mainly be carried out by the Fraunhofer-Institute for Production Technology IPT, a leading edge research institute in the field of automated laser assembly. For the development of automated alignment and bonding processes, the consortium sets up a process prototyping station with standard equipment and easy-to-use operator interfaces. A novel control concept for the production solution aiming at a high degree of reusability of process implementations will be worked out. The participation of FISBA OPTIK, a leading optics manufacturer from Switzerland with semi-automated assembly lines for optical sub-assemblies, completes the consortium. FISBA contributes valuable experience regarding automation-friendly component design and automated component handling. Together, the APACOS consortium strives for a more standardized and automated assembly of lasers and optical systems considering aspects of product design, production system requirements, and process development. That will lead to a set of design guidelines for laser sources and a flexible assembly cell for laser optics. The project results are expected to have a major impact on the European laser industry by strengthening innovative laser manufacturers through more competitive production conditions.

Schubert M.,Empa - Swiss Federal Laboratories for Materials Science and Technology | Mourad S.,Fisba Optik AG | Schwarze F.W.M.R.,Empa - Swiss Federal Laboratories for Materials Science and Technology
Wood Science and Technology | Year: 2011

Bioincising is a promising method for enhancing liquid uptake (e.g. preservatives or wood-modification agents) in refractory wood. Incubation with the white-rot fungus, Physisporinus vitreus, which selectively degrades pit membranes, results in deeper and more homogeneous penetration of liquids. Conventional methods of assessing the degree of fungal discolouration of wood after treatment with preservatives (e.g. European standard EN 152) are partly based on a subjective rating scale, which gives a rough value of the surface colonisation by blue-stain fungi. Hence, an automated image processing (AIP) procedure was developed for standardised quantification of the segmentation thresholds of discolouration and tested against manual segmentation analysis. Using the red filter in the AIP method revealed high correlation (R 2 0.95) and allowed for more user friendly and objective determination of blue staining of wood. © 2010 Springer-Verlag.

Proceedings of SPIE - The International Society for Optical Engineering | Year: 2011

Shaping processes, e.g. cnc grinding, loose abrasive grinding and fluid jet polishing have been investigated experimentally for the level of sub-surface damage caused analyzing dif-ferent process characteristics. © 2011 SPIE.

Proceedings of SPIE - The International Society for Optical Engineering | Year: 2013

Broad area high power laser diodes emit in fast axis and slow axis direction very different beam profiles. In fast axis direction a nearly diffraction limited Gaussian beam, but in the slow axis direction a multi-mode beam profile. We present a top hat solution for individual fast axis and slow axis beam shaping using micro optical components for a standard high power laser diode bar with a wavelength of 810 nm. The compact design allows the individual beam shaping in a very small space. The quality of the beam shaping depends mainly on the precision of the micro optics and the advanced assembly process. These solutions enable the development of laser diode modules with individual and application specific beam shapes and small dimensions. © 2013 Copyright SPIE.

Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014

Micro optic components such as the fast axis collimator (FAC) are in widespread use in the high power diode laser industry. The requirement of high numerical aperture from diode laser and optical design and the pressure of cost to performance ratio have created convergence in the application towards the design of a plano-aspheric cylinder lens with high refractive index. The performance in power transmission and optical collimation of the FAC lens type are dependent on specific factors such as accuracy in form and refractive index, surface roughness and performance of the coating. We present a qualified method for measurement of the collimation efficiency and industrial analysis of the form error, of the surface roughness, of the AR coating as well as the result of a 1000h damp/heat test of the stability of the AR coating. © 2014 SPIE.

Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014

Methods for thermal modeling, analysis and optimization are presented. Modeling distinguishes between three basic types of lens mounts. For analysis also FEA-results are incorporated in the optical model. Optimization with a simple, glass substitution method and a paraxial method is presented. © 2014 SPIE.

Proceedings of SPIE - The International Society for Optical Engineering | Year: 2010

Individually addressable high power single-mode diode laser arrays are an enabling technology for industrial applications. Precision micro-optics for beam-shaping and transfer of the laser emission to the application focus is giving access to free space diode laser functions not realized yet. Manufacturing and assembly of micro-optics therefore is analysed to be selected according to thorough optical analysis and concepts for minimized production cost. © 2010 Copyright SPIE - The International Society for Optical Engineering.

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