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Proceedings Paper

Dimensional measurement of internal profile using the optical caliper
Author(s): Lianhua Jin; Nobuto Miyatsu; Eiichi Kondoh; Bernard Gelloz; Naobumi Kanazawa; Toru Yoshizawa
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Paper Abstract

Dimensional measurement of internal profile is conventionally performed mechanically with instruments like vernier calipers. Here, we cope with the measurement by using an optical caliper. The caliper consists of a semiconductor laser, a right conical mirror, a lens system, and an image sensor. The concept of the measurement approach is intersecting the object with a disk light sheet, collecting the cross-sectional profile image with an image sensor, and extracting dimensions of the profile. Example of practical measurement is presented.

Paper Details

Date Published: 2 November 2018
PDF: 6 pages
Proc. SPIE 10819, Optical Metrology and Inspection for Industrial Applications V, 108190K (2 November 2018); doi: 10.1117/12.2501027
Show Author Affiliations
Lianhua Jin, Univ. of Yamanashi (Japan)
Nobuto Miyatsu, Univ. of Yamanashi (Japan)
Eiichi Kondoh, Univ. of Yamanashi (Japan)
Bernard Gelloz, Nagoya Univ. (Japan)
Naobumi Kanazawa, Nak Co., Ltd. (Japan)
Toru Yoshizawa, Non-Profit Organization 3D Associates (Japan)

Published in SPIE Proceedings Vol. 10819:
Optical Metrology and Inspection for Industrial Applications V
Sen Han; Toru Yoshizawa; Song Zhang, Editor(s)

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