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A precise model of LED lighting and its application in uniform illumination system

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Abstract

Optical models directly effect the irradiance distribution of observed surface. Traditionally, approximate Lambertian models are widely used in designing the light-emitting diodes (LED) arrays in spite of their errors compared with the experimental data. But now a novel LED optical model for uniform illumination system has been proposed, in which the curve-fitting technique is used to reduce the inherited errors and modify those previous models. The points from the curve of the LED light intensity are adopted, and a spline curve is designed for fitting, which obtains the revised mode. To verify its feasibility, we apply the new model in a 4 × 4 array design. The results show that compared with the approximate Lambertian, the light intensity distribution produced by the fitting model is more uniform and intense, as is expected.

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Authors and Affiliations

  1. College of Information Science and Engineering, Huaqiao University, Quanzhou, 362021, China

    Feng-tie Wu  (吴逢铁) & Qi-lu Huang  (黄启禄)

Authors
  1. Feng-tie Wu  (吴逢铁)
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  2. Qi-lu Huang  (黄启禄)
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Corresponding author

Correspondence to Feng-tie Wu  (吴逢铁).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.60977068) and the Science and Technology Key Project of Quanzhou (No.2009G9).

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Wu, Ft., Huang, Ql. A precise model of LED lighting and its application in uniform illumination system. Optoelectron. Lett. 7, 334–336 (2011). https://doi.org/10.1007/s11801-011-1031-x

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  • DOI: https://doi.org/10.1007/s11801-011-1031-x

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