By: Lumentra  09-12-2011
Keywords: Photometric Testing

Lumentra’s measurement and calibration services are carried out in accordance with the following  international standards:

  • IES LM-79 - Electrical and Photometric Testing of  Solid-State Lighting Devices
  • IES LM-80 - Lumen Depreciation of LED Light   Sources
  • ANSI C78.377 - Chromaticity of SSL   Products
  • Energy Star - Energy Efficiency for SSL
  • CIE 127:2007 - Measurement conditions for  LED  measurements

Please choose the sub-pages under this heading for detailed information about our services

Keywords: Photometric Testing

Other products and services from Lumentra



The spectrum covers the full range from UV to infrared light and is therefore independent of the sensitivity of the human eye to brightness and color. Colorimetry relates to the visual perception of color by the human eye and provides a quantitative and qualitative description of color. Lumentra offers a sophisticated array of photometric and radiometric measurements tailored specifically for LED industries.



We are equipped with state of the art thermal characterization facilities which enable us to provide the following thermal measurements. Accurate knowledge of the thermal characteristics of a SSL luminaire can therefore result in improved performance and longer lifetimes. Thermal effects have a significant impact on the performance of SSL devices. We provide extensive computer thermal modeling of luminaires.



As the LED is powered, a portion of the blue light from the LED will leak through the phosphor coating, while a fraction of it will be down-converted by the phosphor into the yellow region. Lumentra’s product development aims at providing LED white light with outstanding Color Rendering Index.