For the functionality of optical systems, the geometrical shape of the functional optical surfaces and their position relative to each other is a decisive criterium. However, small-aperture polymer optics, which are in great demand, for example, in mobile phone cameras, endoscopes or car sensors, cannot yet be checked with sufficient accuracy using standard metrological methods. At the LASER - World of Photonics trade fair from 24 to 27 June 2019 in Munich, the Fraunhofer Institute for Production Technology IPT from Aachen, Germany, will present a new tomographic method that can measure such optical components with a small aperture non-destructively and in one step.
The new method is based on optical coherence tomography (OCT) and can capture both functional surfaces of an optical system simultaneously in one single scan.
In this way not only the surfaces can be characterized, but also the alignment of the functional surfaces to each other can be checked. The process is also capable of characterizing spherical and aspherical lenses as well as free-form surfaces.
During the exhibition, the Fraunhofer IPT will be presenting its OCT-based inspection system for geometrically complex polymer microoptics at its booth in hall B1, booth 653.
The new measurement system offers manufacturers of sensor technology and imaging systems an efficient and cost-effective way of quality assurance:
Since the system can determine the shape and centering of both functional surfaces in just one single step, it delivers a result in shortest time that cannot until now be achieved so quickly and accurately with any conventional optical measurement method.
The Fraunhofer IPT is now planning to fully automate the tomographic process so that in-line integration into existing optical production lines will become possible.
Max Riediger M.Sc.
Fraunhofer-Institut für Produktionstechnologie IPT
https://www.ipt.fraunhofer.de/en/Press/Pressreleases/20190612-non-destructive-to... Here you will find this press release and printable photos.
Susanne Krause | Fraunhofer-Institut für Produktionstechnologie IPT
Fraunhofer IPT presents platform for automated precision assembly of polarized optical fibers
02.07.2019 | Fraunhofer-Institut für Produktionstechnologie IPT
Fingerprint spectroscopy within a millisecond
24.06.2019 | Fraunhofer-Institut für Angewandte Festkörperphysik IAF
Adjusting the thermal conductivity of materials is one of the challenges nanoscience is currently facing. Together with colleagues from the Netherlands and Spain, researchers from the University of Basel have shown that the atomic vibrations that determine heat generation in nanowires can be controlled through the arrangement of atoms alone. The scientists will publish the results shortly in the journal Nano Letters.
In the electronics and computer industry, components are becoming ever smaller and more powerful. However, there are problems with the heat generation. It is...
Scientists have visualised the electronic structure in a microelectronic device for the first time, opening up opportunities for finely-tuned high performance electronic devices.
Physicists from the University of Warwick and the University of Washington have developed a technique to measure the energy and momentum of electrons in...
Scientists at the University Würzburg and University Hospital of Würzburg found that megakaryocytes act as “bouncers” and thus modulate bone marrow niche properties and cell migration dynamics. The study was published in July in the Journal “Haematologica”.
Hematopoiesis is the process of forming blood cells, which occurs predominantly in the bone marrow. The bone marrow produces all types of blood cells: red...
For some phenomena in quantum many-body physics several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers from the Technical University of Munich (TUM) and Harvard University in the United States has now successfully deployed artificial neural networks for image analysis of quantum systems.
Is that a dog or a cat? Such a classification is a prime example of machine learning: artificial neural networks can be trained to analyze images by looking...
An international research group led by scientists from the University of Bayreuth has produced a previously unknown material: Rhenium nitride pernitride. Thanks to combining properties that were previously considered incompatible, it looks set to become highly attractive for technological applications. Indeed, it is a super-hard metallic conductor that can withstand extremely high pressures like a diamond. A process now developed in Bayreuth opens up the possibility of producing rhenium nitride pernitride and other technologically interesting materials in sufficiently large quantity for their properties characterisation. The new findings are presented in "Nature Communications".
The possibility of finding a compound that was metallically conductive, super-hard, and ultra-incompressible was long considered unlikely in science. It was...
24.06.2019 | Event News
29.04.2019 | Event News
17.04.2019 | Event News
19.07.2019 | Physics and Astronomy
19.07.2019 | Physics and Astronomy
19.07.2019 | Earth Sciences