Calibration Method for Optical Axis Perpendicular Error of Laser Sensor

Wang Yiwen1 Fu Luhua1 Zhao Yan1 Zhang Heng2 Qu Xinghua1 Liu Changjie1

(1.State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin, China 300072)
(2.National Institute of Metrology of China, Beijing, China 100013)

【Abstract】The high-precision calibration of laser sensors in high-precision composite measuring machines is conducted. The calibration method of the optical axis perpendicular error angle by using the calibration block of double slopes with known base angles and the sine theorem is proposed. This method can avoid the errors from various directions caused by the non-perpendicular orientation between the optical axis of sensors and the worktable, which can effectively improve the measurement accuracy of this sensor and provide a basis for multi-sensor duplex measurement with higher accuracy.

【Keywords】 sensors; calibration of perpendicular error; fitted plane slope; optical axis; high-precision complex measurement;

【Funds】 National Key Foundation for Exploring Scientific Instrument Program (2013YQ17053903)

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This Article


CN: 31-1339/TN

Vol 44, No. 04, Pages 224-233

April 2017


Article Outline


  • 1 Introduction
  • 2 Measuring principles
  • 3 Experiment results
  • 4 Analysis and discussion
  • 5 Conclusions
  • References