Light Pipe Line Beam Shaper |
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Authors: | Cheng-Huan Chen Chien-Chuan Chen Wei-Chien Liang |
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Institution: | (1) Power Mechanical Engineering Department, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan, R.O.C.;(2) Electronic Engineering Department, National Taiwan University of Science and Technology, 43, Section 4, Keelong Road, Taipei, 106, Taiwan, R.O.C. |
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Abstract: | 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. |
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Keywords: | laser beam shaping light pipe |
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