Instrument Systems Now Offers Stray Light Correction

12/13/2015 8:24 AM 

Instrument Systems GmbH,  a leader in developing and manufacturing high-precision light measurement systems, is now offering stray light correction during the calibration of its array spectrometers. This new feature will enable more accurate measurements of UV-LEDs. By including a stray light correction matrix in the calibration process, the company has made it possible to suppress the stray light during a measurement by an order of magnitude down to 10-5. A 10% higher sensitivity in the UV range after stray light-corrected calibration leads to about 3-4% higher accuracy in the radiometric measurement.

A more accurate determination of the radiometric values of UV LEDs facilitates their characterization and development, and supports the various applications of these radiation sources in, for example, the fields of coating, curing, disinfection or biomedicine. In determining the x y color coordinates of white and colored LEDs, stray light-corrected devices from Instrument Systems achieve an improvement in the measurement accuracy of high-quality array spectrometers between 0.0015 to 0.0020, thus making significant progress toward meeting the high precision requirements of the LED industry.

For evaluation of photobiological safety, particularly in terms of blue light hazards and the human eye, the stray light corrected array spectrometers provide a suitable and cost effective alternative to monochromators.