| Author(s): |
Yuqin Zong; Yoshihiro Ohno; Pei-ting Chou; |
| Title: |
PRACTICAL METHOD FOR MEASUREMENT OF AC-DRIVEN HIGH-POWER LEDS |
| Published: |
July 14, 2008 |
| Abstract: |
Alternating-current (AC) driven high-power LEDs are available and used in SSL products. AC LEDs operate directly from a mains supply and thus have advantages in simplifying product design, increasing product reliability, and extending product lifetime. Accurate measurement of AC high-power LEDs is required for quality control and product qualifications such as US Energy Stars. We have developed a simple, robust method for measurement of high-power LEDs at any specified junction temperature under a normal AC operating condition. In addition to optical quantities, the measurement of an AC LED also determines the thermal resistance between the LED junction and the heat sink. |
| Proceedings: |
CIE Midterm Meeting and the Light and Lighting Conference |
| Pages: |
5 pp. |
| Location: |
Budapest, -1 |
| Dates: |
May 27-29, 2009 |
| Keywords: |
AC LED; High-Power LED; Junction temperature; Measurement method |
| Research Areas: |
Photometry |
