Abstract

The non-orthogonal shaft laser theodolite (N-theodolite) measurement system is a new kind of instrument applied to large-scale metrology. The system consists of two identical N-theodolites, each of which is made up of a two-dimensional rotary table and one collimated laser. The three axes of the N-theodolite have no strict requirements on their orthogonality and intersection conditions. A novel method, to the best of our knowledge, is proposed to calibrate the N-theodolite measurement system, and the calibration method of the laser beam for N-theodolite is the key innovation aspect of this paper. The laser beam is calibrated through dynamic rotation. Throughout the experiment, the straightness accuracy of the laser beam of the left N-theodolite is 0.08 mm and the right N-theodolite is 0.074 mm. The repeatability of the straightness accuracy is ${\pm 0.032}\,\,{\rm mm}$. The uncertainty of straightness accuracy is 0.040 mm. The measurement experiment results show that the maximum deviation of the measured value of this system is 0.34 mm at a range of 5 m, which is verified to be a feasible method for the calibration of the laser beam.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Self-calibration method for rotating laser positioning system using interscanning technology and ultrasonic ranging

Jun Wu, Zhijing Yu, and Jingchang Zhuge
J. Opt. Soc. Am. A 33(4) 544-550 (2016)

Optimization for calibration of large-scale optical measurement positioning system by using spherical constraint

Ziyue Zhao, Jigui Zhu, Bin Xue, and Linghui Yang
J. Opt. Soc. Am. A 31(7) 1427-1435 (2014)

Flexible dynamic measurement method of three-dimensional surface profilometry based on multiple vision sensors

Zhen Liu, Xiaojing Li, Fengjiao Li, and Guangjun Zhang
Opt. Express 23(1) 384-400 (2015)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription