Freeform lens design for light-emitting diode uniform illumination by using a method of source-target luminous intensity mapping

Jin Jia Chen, Ze Yu Huang, Te Shu Liu, Ming Da Tsai, Kuang Lung Huang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We present a freeform lens for application to LED uniform illumination. This lens, which is designed with a method of simple source-target luminous intensity mapping, can produce irradiance uniformity of greater than 0.8 and optical efficiency above 90% with an arbitrary half-beam angle greater than 45 deg. Typically, as compared with a conventional source-target energy mapping method, this design method can achieve better optical performance of lenses for general LED lighting. When a non-Lambertian-type light source is employed, for example, the chip on board LED, the use of the method can result in a compact LED lens without losing the optical performances of high irradiance uniformity and high optical efficiency as yielded by lenses for Lambertian-type LED light sources.

Original languageEnglish
Pages (from-to)E146-E152
JournalApplied Optics
Volume54
Issue number28
DOIs
Publication statusPublished - 2015 Oct

Fingerprint

lens design
luminous intensity
Light emitting diodes
Lenses
light emitting diodes
Lighting
illumination
lenses
irradiance
Light sources
light sources
illuminating
chips

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

Cite this

Chen, Jin Jia ; Huang, Ze Yu ; Liu, Te Shu ; Tsai, Ming Da ; Huang, Kuang Lung. / Freeform lens design for light-emitting diode uniform illumination by using a method of source-target luminous intensity mapping. In: Applied Optics. 2015 ; Vol. 54, No. 28. pp. E146-E152.
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Freeform lens design for light-emitting diode uniform illumination by using a method of source-target luminous intensity mapping. / Chen, Jin Jia; Huang, Ze Yu; Liu, Te Shu; Tsai, Ming Da; Huang, Kuang Lung.

In: Applied Optics, Vol. 54, No. 28, 10.2015, p. E146-E152.

Research output: Contribution to journalArticle

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