Search

Anzeige:

Most recent articles within Optical Metrology:

Search within this category


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

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...
[ read more ]

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

Ion-beam based polishing error correction in mass production of precision optics

23.11.2010 - Photonik international /2010

CNC grinding and polishing are well established procedures in manufacturing optics. Lately, plasma- and ion-beam based techniques are more frequently used as alternatives...
[ read more ] | [ deutsche Version lesen ] 

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

Extremely simple techniques for the complete spatio-temporal characterization of extremely complex ultrashort light pulses

23.11.2010 - Photonik international /2010

We describe four experimentally simple, accurate, and reliable methods for measuring both simple and very complex ultrashort light pulses. Although each method comprises ...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Laser Technology

In-line colour measurement in production environments

23.11.2010 - Photonik international /2010

Both the equipment and the measurement parameters play important roles in achieving reliable in-line colour measurement results. This article highlights several issues to...
[ read more ] | [ deutsche Version lesen ] 

Non-destructive characterisation of AR coatings on curved surfaces

23.11.2010 - Photonik international 1/2010

Highly efficient anti-reflective coatings minimize disruptive reflection losses for optical components, such as precision optical lenses or ophthalmic lenses. Surface mea...
[ read more ] | [ deutsche Version lesen ] 

Automated visual surface inspection in 3-D parts production

23.11.2010 - Photonik international /2010

Whenever the assured properties of technical and decorative surfaces cannot be ensured by the manufacturing process alone, determining surface quality through visual insp...
[ read more ] | [ deutsche Version lesen ] 

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

A compact broadband EUV laser-plasma source for metrological applications

12.11.2009 - Photonik international 2/2009

Metrology applications require compact laser-plasma sources that generate broad extreme ultra-violet (EUV) radiation cost effectively. A combination of a small diode-pump...
[ read more ] | [ deutsche Version lesen ] 

Diagnostics of high repetition rate pulsed lasers

12.11.2009 - Photonik international 2/2009

Developers and user of high repetition rate lasers are facing a number of challenging issues: Not only characterize pico- and nanosecond laser pulses in “no time”, but al...
[ read more ] | [ deutsche Version lesen ] 

Laser Doppler distance sensor and its applications

12.11.2009 - Photonik international 2/2009

The measurement of distance with high resolution is of great importance in many technical processes. Due to their non-contact and precise measurement principle optical se...
[ read more ] | [ deutsche Version lesen ] 

This technical articel is also under the category: Laser Technology

Automatic detection of surface and structural defects on reflecting workpieces

12.11.2009 - Photonik international 2/2009

In automatic real-time inspection of reflecting surfaces, the high-precision positioning required for the workpiece is particularly challenging. A new inspection algorith...
[ read more ] | [ deutsche Version lesen ] 

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

More Technical Articles

| [1] | | 2 | | 3 |


Application Reports

New as of 2010

Find our application reports within the News Section.

Photonik Newsletter

Subscribe to our free email newsletter (in German language).