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MEMS spectral sensors bring laboratory measurements to field use

19.01.2015 - Photonik LP/2015

Bildquelle: Spectral Engines Oy

Process industry needs new sensor solutions to increase the efficiency of manufacturing processes and quality of products. There is obvious market potential for smaller ...
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Spatially-resolved oxygen measurements in biological samples

19.01.2015 - Photonik LP/2015

Bildquelle: ibidi

The relevance of scientific measurements depends crucially on the precise knowledge of all parameters that have a significant effect on the result. In biological samples,...
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Laser-induced ultrasound for applications in metrology

19.01.2015 - Photonik LP/2015

Bildquelle: Univ. Konstanz

The optical generation and detection of high-frequency ultrasound by employing ultrashort laser pulses enables the measurement of characteristic material parameters. A hi...
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Snapshot hyper-spectroscopy - full frame imaging on a fly

16.01.2015 - Photonik LP/2015

Bildquelle: Cubert GmbH

In hyperspectral imaging, a camera creates a so called “spectral cube” of a certain object. Similar to a RGB-image, the image taken consists of various colour informati...
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Optische Gitterbauelemente - Herstellung und Anwendung

28.10.2014 - Photonik 6/2014

Bildquelle: ZEISS

Die optische Spektroskopie ist eine gängige Untersuchungsmethode u.a. in der Farbmessung, der chemischen Analyse oder der Schichtdickenmessung. Für den Wellenlängenbereic...
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This technical articel is also under the category: Optical Components

Revealing the invisible – identifying concealed substances by means of terahertz spectroscopy

15.11.2013 - Photonik international /2013

Is that powder in the envelope dangerous? Is the right mixture flowing through the pipe? Is the semiconductor doped correctly? Terahertz spectroscopy can help answer thes...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Optical Spectroscopy

Multiwavelength interferometry measures topology of aspherical optics

15.11.2013 - Photonik international /2013

“You can only make as well as you can measure,” is the maxim the British engineer Sir Joseph Whitworth formulated by the middle of the 19th Century. Thus, toda...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Optical Components

Hyperspectral imaging sensor systems using tunable lenses

15.11.2013 - Photonik international /2013

Hyperspectral imaging systems record information with high resolution in both the spatial and spectral regimes simultaneously. One central challenge remains distribution ...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Image Capturing and Processing

Multi-gas sensing by broadband laser spectroscopy

15.11.2013 - Photonik international /2013

A new method of absorption spectroscopy is being developed to provide high spectral resolution and wide spectral coverage using a single multi-mode laser and a single det...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Optical Spectroscopy

Line scan cameras inspect internal O-ring groove surfaces

15.11.2013 - Photonik international /2013

With a “Scheimpflug Configuration“, three line scan cameras simultaneously inspect not only the horizontal floor and surrounding flanking areas, but also the vertical sid...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Image Capturing and Processing

Process monitoring in laser micro machining

15.11.2013 - Photonik international /2013

Laser micro machining and laser surface structuring are innovative manufacturing technologies, and useful with a wide range of machinable materials. They both offer high ...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Manufacturing of Optics

Look, but don't touch

01.06.2013 - Laser+Photonik 03/2013

Applications of aspheric and freeform optical elements are found in Blu-ray players, digital cameras, laser diode and LED collimation optic and intraocular lenses (IOL), ...
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Distributed fibre-optic temperature and strain measurement with extremely high spatial resolution

13.11.2012 - Photonik international /2012

"Scanning the Rayleigh scattering along a length of optical fibre enables a distributed sensor system where every point along the fibre acts as a sensor. This novel metho...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Fibre optics and Optical Communication

The color of light

01.10.2012 - Laser+Photonik 05/2012

LED systems requiring stringent color coordinate accuracy demand sensor-based control. Color sensors enable the individual LEDs to be controlled according to chromaticity...
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Don't be afraid of ghosts!

01.08.2012 - Laser+Photonik 04/2012

High precision, automatic and reliable: How automatic goniometers with intelligent measured data analysis and a sophisticated hardware setup are overcoming the traditiona...
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This technical articel is also under the category: Optical Components

The ubiquitous box of tricks

01.04.2012 - Laser+Photonik 02/2012

For optical surface profiling in the micrometer to nanometer range, only the combination of confocal and interferometric measurement techniques in a microscope provides t...
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Microlens based 4D-lightfield cameras for 3D image recording through a single lens in a single shot

17.11.2011 - Photonik international /2011

The increasing power of digital image processing makes more and more application areas accessible. Industry, in particular, demands ever increasing camera resolutions and...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Image Capturing and Processing

Photoluminescence imaging applications in silicon photovoltaics

17.11.2011 - Photonik international /2011

Photoluminescence imaging of large-area silicon wafers was demonstrated at the University of New South Wales, Sydney, in 2005, and since then, the technique has proven to...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Laser Technology

Thermal hyperspectral imaging in the LWIR

17.11.2011 - Photonik international /2011

Hyperspectral imaging has gained importance in biomedical, chemical, industrial, aerospace and defense applications. In this article we see how ultimate performance, LWIR...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Image Capturing and Processing

Light and color measurement through imaging

01.04.2011 - Laser+Photonik 02/2011

The number of display elements that we encounter in our daily lives is constantly increasing, from simple indicator LEDs through to high-resolution graphic displays. At p...
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