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Proceedings Paper

Amplitude-modulated continuous-wave laser scanner employing adaptive gain control for avoidance of receiver saturation
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Paper Abstract

With the rise of Industry 4.0, smart factory is fast becoming a key concept in infrastructure. To realize the autonomous production system, it is necessary to ensure the parts are properly manufactured. 3D scanners are expected to play a vital role in quality assessment in smart factories. Especially, amplitude-modulated continuous-wave laser scanners benefit from high accuracy and high sensitivity which are suitable for industrial inspection. However, due to the limited dynamic range of receiver electronics, such laser scanners fail to obtain the data points in 3D measurement of highly reflective objects. This impairment deteriorates the performance of conversion of 3D point clouds to solid data for shape inspection, 3D modeling, reverse engineering etc. We coped with receiver saturation by adopting a high-speed polarizationindependent variable optical attenuator in our laser scanner. With such a lase scanner, we have succeeded in prevention of data loss due to receiver saturation.

Paper Details

Date Published: 2 March 2020
PDF: 6 pages
Proc. SPIE 11287, Photonic Instrumentation Engineering VII, 1128708 (2 March 2020); doi: 10.1117/12.2543884
Show Author Affiliations
Chao Zhang, The Univ. of Tokyo (Japan)
Sifan Liu, The Univ. of Tokyo (Japan)
Zheyuan Zhang, The Univ. of Tokyo (Japan)
Fulin Xiang, The Univ. of Tokyo (Japan)
Neisei Hayashi, Tokyo Institute of Technology (Japan)
Lei Jin, The Univ. of Tokyo (Japan)
Sze Yun Set, The Univ. of Tokyo (Japan)
Shinji Yamashita, The Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 11287:
Photonic Instrumentation Engineering VII
Yakov Soskind; Lynda E. Busse, Editor(s)

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