Highly energy-efficient agricultural lighting by B+R LEDs with beam shaping using micro-lens diffuser

Xuan Hao Lee, Yu Yu Chang, Ching Cherng Sun

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

This paper presents a high-performance LED agricultural luminaire that uses a beam-shaping diffuser to achieve high optical efficiency and energy saving. The agricultural luminaire performs an optical efficiency as high as 84.2%. The beam shaping effect also obtains irradiance uniformity of 1/2.56 and excellent spatial color uniformity. The enhancement ratio of optical utilization factor in the proposed agricultural luminaire is 360% in comparison with traditional lighting. Under the designed case, the total utilization factor, including optical utilization factor and spectral utilization factor, of the B+R LED lamp can save 86.1% of power consumption in comparison with compact fluorescent bulbs.

Original languageEnglish
Pages (from-to)7-14
Number of pages8
JournalOptics Communications
Volume291
DOIs
StatePublished - 15 Mar 2013

Keywords

  • Agricultural lighting
  • Beam shaping
  • Light-emitting diodes
  • Optical design

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