One-time ray-tracing method for the optimization of illumination system

Shu Chun Chu, Hai Li Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

One of the major problems of designing an illumination optical system is the repeatedly time-consuming ray-tracing process while optimizing the illumination optical system parameters. This study proposes a "one-time ray-tracing method" for the optimization of illumination systems. As a demonstration, this study designs a planar lightguide backlight with uniformly irradiance at the light-exiting surface using the proposed one-time ray-tracing method. In this method, the irradiance distributions of the target region are related to the radiant intensity distribution of the side planar light sources. Using only one-time ray tracing and the optimization of the light source radiant intensity, the proposed method can quickly find a design of the planar lightguide backlight for providing an uniformly irradiance distribution at target illumination region. That is, with only one-time ray tracing and the optimization technique, the CV(RMSR) (coefficient of variation of root mean square error), of the target region irradiance distribution was decreased to 0.06 from 0.12. The proposed method holds great potential to the designing illumination systems, since it can be applied to design not only the planar lightguide but also other optical illumination systems.

Original languageEnglish
Title of host publicationInternational Conference on Optics in Precision Engineering and Nanotechnology, icOPEN 2013
DOIs
Publication statusPublished - 2013 Aug 15
EventInternational Conference on Optics in Precision Engineering and Nanotechnology, icOPEN 2013 - Singapore, Singapore
Duration: 2013 Apr 92013 Apr 11

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8769
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherInternational Conference on Optics in Precision Engineering and Nanotechnology, icOPEN 2013
CountrySingapore
CitySingapore
Period13-04-0913-04-11

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Chu, S. C., & Yang, H. L. (2013). One-time ray-tracing method for the optimization of illumination system. In International Conference on Optics in Precision Engineering and Nanotechnology, icOPEN 2013 [87692M] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8769). https://doi.org/10.1117/12.2021115