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How to Measure the Flux of UV LEDs

Date Announced: 11 Nov 2019

 

Integrating spheres are widely used to measure the total light output (radiant or luminous flux) of light sources such as lamps, luminaires and LEDs, but few (if any) come calibrated for measuring the output in the ultraviolet (UV) part of the electromagnetic spectrum below 350nm. This has presented those working with specialist UV LEDs operating in the UVC (200-280nm), UVB (280-315nm) and UVA (315-400nm) bands with something of a problem. Until now. The new Labsphere UV LED Flux Spectroradiometer from Pro-Lite comes calibrated to NIST standards from 200-980nm, so you can have confidence in your UV measurement results.

The Labsphere UV LED integrating sphere system is purpose designed for measuring the spectral radiant flux in Watts of UV-VIS-NIR LEDs. It combines a compact integrating sphere for total hemispheric collection of the emitted light with a fast array spectrometer with an advanced stray light correction algorithm for accurate readings in the UV. Each system is supplied with a NIST traceable spectral flux standard which means that you can trust your readings and you can maintain your own calibration without the need to return your sphere to the factory every year.

The system can be configured with a temperature controlled sample holder for studying the variation of light output as a function of temperature. LIV sweeps may also be performed to investigate the full gamut of electrical and optical characteristics of the LED under test. For visible wavelength LEDs, the spectroradiometer will of course report photometric and colorimetric values (lumens, CCT, CRI etc).

For further information: http://www.pro-lite.co.uk/File/uv_led_radiometer.php

About Pro-Lite Technology

Pro-Lite is a supplier of specialist equipment and services with a technical focus in the following areas of photonics: instruments for measuring light and the optical properties of materials; photometry; lasers and laser safety equipment; opto-mechanics and nano-positioning equipment; optics and optical materials; and spectroscopy and spectral imaging. Pro-Lite Technology Ltd is part of the Pro-Lite Group of Companies, which includes Photometric & Optical Testing Services, SphereOptics Germany, Pro-Lite France and Pro-Lite Iberia.

Contact


Robert Yeo 
+44 (0) 1234 436110 

E-mail: info@pro-lite.co.uk

Web Site: www.pro-lite.co.uk/File/uv_led_radiometer.php

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