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STANDARD LEDS WITH SUPERIOR LONG-TERM STABILITY

Published

Author(s)

Yuqin Zong, Weiqiang Zhao, C Cameron Miller

Abstract

A large-chip standard LED with superior long-term stability have been developed at NIST. The standard LED uses a large, specialty die rated for 50 W but is operated under 3 W to eliminate aging effect. The standard LED was seasoned for one year and measured for its long-term stability for three years. The measurement result shows that the long-term stability is on the level of 0.1 % in the three-year time. The LED can be used as a transfer standard for luminous intensity, luminance, and total luminous flux.
Proceedings Title
Proceeding of the 29th Quadrennial Session of the CIE
Conference Dates
June 14-22, 2019
Conference Location
Washington, DC
Conference Title
The 29th Quadrennial Session of the CIE

Keywords

Standard LED, Long-term Stability, Photometry.

Citation

Zong, Y. , Zhao, W. and Miller, C. (2021), STANDARD LEDS WITH SUPERIOR LONG-TERM STABILITY, Proceeding of the 29th Quadrennial Session of the CIE, Washington, DC, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=928008 (Accessed September 27, 2021)
Created April 22, 2021