Light pipe line beam shaper

Cheng-Huan Chen*, Chien Chuan Chen, Wei Chien Liang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A light pipe based laser beam shaper is proposed as a low loss approach to transfer a Gaussian laser beam into a long line beam with uniform distribution along the line direction for the applications of illumination or material processing. A telecentric relay optics has been used for solving the radiometric issues in the wide angle optics. In addition, the length of the light pipe is used as a parameter for manipulating irradiance distribution at the outlet to compensate for the non-uniformity resulting from the partial reflection at the optical interface in the relay optics, so as to achieve a highly uniform line beam at the target plane. The proposed scheme provides an economical and versatile solution for the wide angle beam shaping problem.

Original languageEnglish
Pages (from-to)231-235
Number of pages5
JournalOptical Review
Issue number4
StatePublished - 1 Jul 2007


  • Laser beam shaping
  • Light pipe

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