Optical Engineering
The New CIE 127 Standard for LED Measurement
Recently, the CIE has published an updated version of its ubiquitous lighting standard, the CIE 127. Among other things, the new standard refines the technique for measuring total radiant flux and introduces a concept called partial LED flux.
Partial and total LED flux measurement systems.
Anyone who works in the LED industry is familiar with the Inter-national Commission on Lighting’s (CIE) document on LED measurements, called the CIE 127:1997. The document describes techniques for measuring various photometric and radiometric quantities that are important to manufacturers and users of LEDs. This industry standard allows different researchers—sometimes halfway across the world from one another—to compare measurements in a meaningful way.
…Log in or become a member to view the full text of this article.
This article may be available for purchase via the search at Optica Publishing Group.
Optica Members get the full text of Optics & Photonics News, plus a variety of other member benefits.