Instrument Systems launches new calibration LED for optical instruments

Dec. 7, 2009
Date Announced: 07 Dec 2009 The special feature of the new calibration LEDs in the ACS-530 Series developed by Instrument Systems is its temperature-stabilized high-power LED. This characteristic marks a significant difference from the standard LEDs used conventionally. The new calibration LEDs enable customers to check their instruments easily and reliably. It also means that the photometric value can be recalibrated by customers in conformity with the CIE (International Commission on Illumination). Before testing is carried out, the LEDs are calibrated using strictly traceable standards for luminous flux and luminous intensity in the Instrument Systems test lab.The calibration LEDs have a reproducible and stable optical output power that is essential for reliable measurements. They also feature a particularly high photometric stability of 0.1 %. The high-power LED is housed in a casing with exceptionally low thermal conductivity together with a TEC element and a temperature sensor in order to achieve this high stability. The high-power LED is also cooled with the assistance of the TEC element. This eliminates sensitivity to external temperature fluctuations and demonstrates significantly reduced degradation behavior by comparison with heated standard LEDs.The calibration LEDs from Instrument Systems are supplied in the three basic colors red, green, blue, as well as in white. Over and beyond the photometric parameters luminous intensity and luminous flux, they can also be used for checking results for dominant wavelength, color coordinates and color temperature. A temperature control unit and a constant current source are necessary for operation of the calibration LEDs. They are controlled using the LED Control software developed by Instrument Systems. A PID parameter set optimized for each standard guarantees fast stabilzation and means that the entire measuring system can be deployed immediately.Company Profile of Instrument Systems GmbHInstrument Systems is one of the leading manufacturers for spectral light measurement systems. Main applications are LED and Display measurement as well as spectroradiometry and photometry. The company delivers a comprehensive range of light measuring products for industrial and research applications. These include highperformance array and scanning spectrometers as well as imaging photometers and colorimeters. All instruments provide accurate and reliable results as per CIE recommendations. The company was founded in 1986 and is based in Munich, Germany. Instrument Systems provides support for the global customer base with backup from a comprehensive network of representatives.

Instrument Systems GmbH, Petra Jürgens Tel. +49 89-45 49 43-23 Fax. +49 89-45 49 43-11

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