New products
New RGB Color Line Scan Cameras up to 3x 7600 pixels and 210 MHz pixel frequency
The new color line scan cameras from Schäfter+Kirchhoff SK22500CNEC-XC and SK22800CJRC-XC with 3×7500 pixels and 3×7600 pixels are ideal for high-resolution surface inspection, for example in the timber and printing industries. Both cameras are equipped with a Camera Link interface. With pixel frequencies up to 210 MHz (3×70 MHz) line rates of 8.9 kHz can be achieved. With pixel sizes of 9.3×9.3 microns, the cameras are very sensitive. The triple-line sensors have between the RGB sensor lines a small Line-Spacing of one respective two-times pixel height. Thus, the color convergence error scanning free moving objects is small, for example when used in bulk sorting. In conjunction with high-resolution lenses the color line scan cameras also are suitable for use in microscopy.
For both color line scan cameras Schäfter+Kirchhoff provides a adapter flange for connecting the proven modular focus adapter FA26-S45 including extension tubes and lens. more...
Polarization Analyzer SK010PA-…
The polarization analyzer SK010PA-VIS / NIR is a universal measurement and test system for laser beam sources with polarization-maintaining fiber optics that was developed for ease of use. A plug & play device that connects to the USB port of a standard computer.
Alignments and measurements are performed rapidly, especially in comparison with tedious and highly time-consuming standard methods. A real-time interactive display shows the state of polarization and the oscillating axis of the linearly polarized fraction, as well as the orientation of the connector index should a fiber cable be attached.
The radiation coupled to the polarization analyzer is collimated and passed through a rotary quarter-wave plate and a polarizer. The signal from the photo detector and the rotary angle are evaluated by an onboard chip and transferred via the USB port to the computer. more...
Laser Diode Beam Sources 51nanoFCM-… and 51nanoFI-…
Laser diode beam sources of type 51nanoFCM-… have reduced power noise, reduced coherence length and low speckle contrast as a result of the internal RF modulation. The laser diode beam source 51nanoFCM-… is typically used for atomic force microscopie (AFM) and as a pilot laser during alignment applications.
In addition to the reduced power noise, reduced coherence length and low speckle contrast of the laser diode beam source 51nanoFCM-…, the 51nanoFI-… features an integrated Faraday Isolator to protect laser sources from back reflection („optical diode“). Radiation coupled back to a laser diode leads to mode hopping, noise, frequency instability, and decrease of lifetime. more...
Publications
RGBV Fiberoptics for TIRF microscopy and biophotonics
Many methods in biophotonics including fluorescence microscopy require laser light over a wide spectral range. RGBV fiber optics (red-green-blue-violet) enable closed, stable and compact systems, which allow to maintain the polarization with simultaneous coupling and collimation of multiple beam sources with wavelegths between 400 nm und 600 nm. more...
Source: BioPhotonik, March 2012, Issue 1-2012, p. 22–26
Components and tools for polarization maintaining fiber optics
Fiber cables open up new vistas for the design of modular devices and compact setups for industrial and scientific applications. Special fibers, such as polarization-maintaining singlemode fibers, are predestined for use in complex, self-contained setups, increasing laser safety by reducing the laser safety classification. Most importantly, a sensitive and delicate measurement system can still enjoy the benefits of a laser beam, with the desirable features of polarization state and coherence, but be physically separated from the laser source. The measurement setup and the laser source are decoupled mechanically and thermally in order to avoid any mutual negative impacts. more...
Source: Laser Technik Journal, Volume 9 Issue 1 (January 2012), pages 30–34
Scan-Makroskop für die Analyse von Filiform-Korrosion
Die Filiformkorrosion ist eine spezielle Form der Korrosion, die bei beschichtetem Aluminium und niedriglegierten Stählen auftritt. Im Zusammenspiel mit Wasser, Sauerstoff und sogenannten Startersalzen bilden sich Korrosionszellen zwischen der Metalloberfläche und der Beschichtung. Ausgehend von Kratzern, Schnittkanten oder anderen Beschädigungen der Beschichtung entstehen langsam fortschreitende fadenförmige Unterwanderungen, eine Erscheinung, die auch als Wurmfraß bezeichnet wird.
Der vorgestellte Filiform-Scanner wurde entwickelt, um eine objektive Beurteilung dieser Korrosionserscheinung zu ermöglichen. Der aus einer Zeilenkamera mit integrierter Hellfeld-Beleuchtung bestehende Messkopf liefert Aufnahmen hoher Qualität. Eine spezialisierte Software ermittelt objektiv die in internationalen Normen festgelegten Kenngrößender Filiform-Korrosion. more...
Source: mo - Magazin für Oberflächentechnik 12/2011
Tracking worms in metal coatings
Filiform corrosion is a form of corrosion that particularly affects aluminium and low grade steels that have been coated or painted. Exposure to water and oxygen enhances the production of corrosion foci that infiltrate the space between the metal and its coating. The corrosion expands slowly in fine outgrowths, like a worm that has eaten into a leaf (leaving marks known as worm trails – Wurmfraß in Bavaria!).
The filiform scanner was developed to provide an automated industrially standardized evaluation of the extent of the corrosion. Images of the highest quality are obtained rapidly by combining the bright-field illumination source and the sensor in the same measuring device. The analytical software automatically evaluates and records the extent of the filiform corriosion according to internationally defined standards. more...
Source: Optik & Photonik, Volume 6, Issue 3, pages 35–37, October 2011
english Version
Fiber optics for laser cooling and trapping
Over the last two decades, the interest in the investigation of atoms at ultralow temperatures has increased substantially, as is reflected in the number of Nobel prizes awarded during this time.
The major focus has shifted from primarily cooling down atoms as close as possible to absolute zero and towards the experimental investigation of these already cooled atoms. Fiber-optical components designed for the accomplishment of these goals assist researchers all over the world in concentrating their experimental effort on their endeavours with ultra-cold atoms. more...
Source: Optik & Photonik, Volume 6, Issue 2, pages 49–51, May 2011
Großflächen-Scan-Makroskop
Durch die Untersuchung der Mikrostruktur der Eisbohrkerne polarer Gletscher können Rückschlüsse auf die Klimageschichte der Erde gezogen werden. Zur Bilderfassung werden den Eisbohrkernen handliche Stücke entnommen, die möglichst schnell gescannt werden müssen, da sich sonst durch Sublimation die poröse Eisoberfläche verändert und der Informationsgehalt der gewonnenen Bilder verfälscht wird. Um diese schnelle Bilderfassung zu ermöglichen, entwickelte Schäfter+Kirchhoff ein Scan-Makroskop, das eine große Fläche mit hoher Auflösung scannt. more...
Source: messtec drives Automation, Ausgabe 9/2010, S. 90–91
The polarization analyzer series SK010PA-VIS / NIR is a comprehensive universal measurement and test system, for free beam applications and laser beam sources with polarization-maintaining fiber optics, that was developed for ease of use by experts in the field. It is a plug & play device and connects to the USB port of a standard computer. more...
Source: Photonik, issue August 4/2010, p. 29–32
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