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SI-IMS300 Flash Units

Photonics.com
Nov 2011
Specialised Imaging Inc.Request Info
 
TRING, England, Nov. 7, 2011 — Specialised Imaging Ltd. has announced a range of high-power xenon flash units that provide a small concentrated high-intensity beam for use with ultrahigh-speed cameras.

The SI-IMS300 offers a short-duration flash source suitable for scientific and industrial processes that occur over short periods, complete with four controllable high-intensity-flash lights.

High-speed cameras recording transient phenomena require very short exposure times to arrest image motion of, typically, a few nanoseconds' duration. The overall time window during which the image capture occurs will be from a few hundred microseconds to a few milliseconds, so short-duration high-intensity illumination sources are required.

The flash units can be precisely synchronized to match the time frame of an event being recorded. The light is focused to a 6-mm spot size, which is then transmitted to the area of interest via a fiber optic lightguide that allows the user to direct the light onto the object under study.

The flash units operate on the principle that electrical energy is stored in large capacitors and released on command into a specially designed flash tube, creating a high-energy luminous discharge. The flash tubes use xenon, which, unlike some other gases, produces a spectral output that has energies at virtually all the wavelengths of the visible spectrum, making it suitable for both film and solid-state sensors.

The lifetime of the flash tubes is thousands of hours, so they rarely need replacing. Requiring just a small power source to produce the necessary levels of illumination, the flash units are inexpensive to run because they use very little energy. They also produce negligible amounts of heat because the illumination results from the excitation of gas molecules. The luminous intensity is much higher than that of conventional tungsten lighting, enabling the illumination to be concentrated onto much smaller areas of interest.


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