Optimization of parameterized lightpipes

R. John Koshel

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

2 Scopus citations


Parameterization via the bend locus curve allows optimization of single-spherical-bend lightpipes. It takes into account the bend radii, the bend ratio, allowable volume, thickness, and other terms. Parameterization of the lightpipe allows the inclusion of a constrained optimizer to maximize performance of the lightpipe. The simplex method is used for optimization. The standard and optimal simplex methods are used to maximize the standard Lambertian transmission of the lightpipe. A second case presents analogous results when the ray-sample weighted, peak-to-average irradiance uniformity is included with the static Lambertian transmission. These results are compared to a study of the constrained merit space. Results show that both optimizers can locate the optimal solution, but the optimal simplex method accomplishes such with a reduced number of ray-trace evaluations.

Original languageEnglish (US)
Title of host publicationInternational Optical Design Conference 2006
StatePublished - 2006
Externally publishedYes
EventInternational Optical Design Conference 2006 - Vancouver, BC, Canada
Duration: Jun 4 2006Jun 8 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6342 I
ISSN (Print)0277-786X


OtherInternational Optical Design Conference 2006
CityVancouver, BC


  • Constraints
  • Illumination
  • Lightpipe
  • Optimization
  • Parameterization
  • Simplex method

ASJC Scopus subject areas

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


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