Study of Temperature Effect on Luminous Flux of High Power Chip on Board Light Emitting Diode

Cao Xuan Quan; Vu Khanh Xuan; Luu Thi Lan Anh; Vo Thach Son

doi:10.15625/0868-3166/24/3/4231

Author affiliations

Authors

Cao Xuan Quan Photometry and Radiometry Laboratory, Vietnam Metrology Institute
Vu Khanh Xuan Photometry and Radiometry Laboratory, Vietnam Metrology Institute
Luu Thi Lan Anh School of Engineering Physics, Hanoi University of Science and Technology
Vo Thach Son School of Engineering Physics, Hanoi University of Science and Technology

DOI:

https://doi.org/10.15625/0868-3166/24/3/4231

Keywords:

high power chip on board light emitting diode (HPCOBLED), luminous flux and integrated sphere, chip on Board

Abstract

High power chip on board light emitting diode (HPCOBLED) are a promising solid state light technology for a variety of lighting applications. In this study, we studied temperature effect on luminous flux of HPCOBLED using VMI-PR-001 system of Vietnam Metrology Institute. The results according to the temperature Tc is increasing, luminous flux reduced. Especially HPCOBLED is larger power, decreasing luminous flux is larger. Reason of this is chance power. HPCOBLED model describes the temperature affection on luminous flux of HPCOBLED. The results of HPCOBLED model matched with that measured by the luminous flux measurement system (VMI-PR-001, Vietnam).

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