Optical Review

, Volume 21, Issue 3, pp 215–219 | Cite as

Glare effect for three types of street lamps based on White LEDs

  • Ching-Cherng Sun
  • Chong-Jhih Jiang
  • Yi-Chun Chen
  • Tsung-Hsun Yang
Regular Papers


This study is aimed to assess the glare effect from LED-based street lamps with three general optical designs, which are cluster LEDs with a single lens, a LED array accompany with a lens array, and a tilted LED array, respectively. Observation conditions were simulated based on various locations and viewing axes. Equivalent luminance calculations were used to reveal the glare levels of the three designs. The age effect for the calculated equivalent luminance was also examined for human eyes of people at the age of 40 or 60. The results demonstrate that among the three design types, a LED array accompany with a lens array causes relatively smaller glare for most viewing conditions.


LED-based street lamps LED arrays direct luminance veiling luminance 


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Copyright information

© The Optical Society of Japan 2014

Authors and Affiliations

  • Ching-Cherng Sun
    • 1
  • Chong-Jhih Jiang
    • 1
  • Yi-Chun Chen
    • 1
  • Tsung-Hsun Yang
    • 1
  1. 1.Department of Optics and Photonics, Institute of Lighting and Display ScienceNational Central UniversityChungliTaiwan

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