Research on color temperature tunable white LED with high color rendering and full spectrum

Kang Liu

doi:10.1117/12.3030447

3 June 2024 Research on color temperature tunable white LED with high color rendering and full spectrum

Kang Liu

Proceedings Volume 13182, 2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024); 131821I (2024) https://doi.org/10.1117/12.3030447
Event: 2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024), 2024, Kunming, China

Abstract

White LEDs with high color rendering are essential in certain color critical lighting applications. However, developing white LEDs with wide spectrum and high color rendering are still a serious challenge. White LEDs with a color temperature of 3000-5000 K are experimentally prepared, with a color rendering index of over 92. The spectrums are continuous in the visible light range, and the luminous efficiency can reach 120lm/W at a working current of 60mA.Based on the mixture of these full-spectrum white LEDs, three full-spectrum white LED samples of different color temperature (3000 K, 4000 K and 5000 K) were mixed. The dimming effect was analyzed by changing with forward current and different combinations. The results showed that the luminous efficacy could be guaranteed to be over 100lm/w and the color rendering index was 92 to 97.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Kang Liu "Research on color temperature tunable white LED with high color rendering and full spectrum", Proc. SPIE 13182, 2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024), 131821I (3 June 2024); https://doi.org/10.1117/12.3030447

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KEYWORDS

Light emitting diodes

Light sources

Color

Temperature metrology

Light sources and illumination

LED lighting

Luminous efficiency

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