Analysis of misalignment-induced measurement error for goniophotometry of light-emitting diode arrays

作者:Cai Wentao; Liu Xianming*; Lei Xiaohua; Chen Weimin
来源:Applied Optics, 2013, 52(34): 8381-8387.
DOI:10.1364/AO.52.008381

摘要

The luminous distribution characteristics of light sources can be measured by goniophotometry, In this work, the misalignment of luminary-induced measurement errors as the main factor affecting the measurement accuracy is analyzed. A calculation method for measurement error is proposed. Then, the translational and angular misalignment-induced measurement errors are calculated and analyzed. Results show that the measurement errors induced by misalignments may be great in some cases even if the far-field condition is satisfied. For luminaries with different radiation patterns, the acceptable misalignment tolerances corresponding to measurement error of less than 1% are given.