Near-infrared image-based method for vision enhancement in monitoring structure and emission character of operating phosphor-converted white light emitting diodes

Authors

  • Quang-Khoi Nguyen Faculty of Physics and Engineeing Physics, VNUHCM-University of Science https://orcid.org/0000-0002-6456-365X
  • Van-Tuan Huynh
  • Nguyet-Thuan Phan
  • Thi-Hanh-Thu Vu
  • Thi-Hoang-Yen Hua
  • Huynh-Tuan Anh Nguyen

DOI:

https://doi.org/10.4302/plp.v17i1.1255

Abstract

We proposed and demonstrated a method for observing the structure of phosphor-converted white light-emitting diodes (pcW-LEDs) while operating. By incorporating infrared (IR) filters placed in front of the camera, the unclear phenomena of the pcW-LEDs structure in the image have been improved significantly compared to that without using IR filters. The NIR image is a good selection for observation of the light-emitting device during its working process without glare effect. In addition, the thermal camera was utilized to capture the temperature behavior of the white LEDs type of phosphor conformal coating under different injection currents to supplement comprehensive information.

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Author Biography

Quang-Khoi Nguyen, Faculty of Physics and Engineeing Physics, VNUHCM-University of Science

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Published

2025-03-31

How to Cite

[1]
Q.-K. Nguyen, V.-T. Huynh, N.-T. Phan, T.-H.-T. Vu, T.-H.-Y. Hua, and H.-T. A. Nguyen, “Near-infrared image-based method for vision enhancement in monitoring structure and emission character of operating phosphor-converted white light emitting diodes”, Photonics Lett. Pol., vol. 17, no. 1, pp. 32–34, Mar. 2025.

Issue

Vol. 17 No. 1 (2025)

Section

Articles

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Copyright (c) 2025 Quang-Khoi Nguyen, Van-Tuan Huynh, Nguyet-Thuan Phan, Thi-Hanh-Thu Vu, Thi-Hoang-Yen Hua, Huynh-Tuan Anh Nguyen

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