TY - JOUR
T1 - Precise autofocusing microscope with rapid response
AU - Liu, Chien Sheng
AU - Jiang, Sheng Hong
N1 - Funding Information:
The authors gratefully acknowledge the financial support provided to this study by the National Science Council Taiwan under Grant no. NSC 102-2221-E-194-023 and the Ministry of Science and Technology, Taiwan under Grant no. MOST 103-2221-E-194-006-MY3 .
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/3
Y1 - 2015/3
N2 - The rapid on-line or off-line automated vision inspection is a critical operation in the manufacturing fields. Accordingly, this present study designs and characterizes a novel precise optics-based autofocusing microscope with a rapid response and no reduction in the focusing accuracy. In contrast to conventional optics-based autofocusing microscopes with centroid method, the proposed microscope comprises a high-speed rotating optical diffuser in which the variation of the image centroid position is reduced and consequently the focusing response is improved. The proposed microscope is characterized and verified experimentally using a laboratory-built prototype. The experimental results show that compared to conventional optics-based autofocusing microscopes, the proposed microscope achieves a more rapid response with no reduction in the focusing accuracy. Consequently, the proposed microscope represents another solution for both existing and emerging industrial applications of automated vision inspection.
AB - The rapid on-line or off-line automated vision inspection is a critical operation in the manufacturing fields. Accordingly, this present study designs and characterizes a novel precise optics-based autofocusing microscope with a rapid response and no reduction in the focusing accuracy. In contrast to conventional optics-based autofocusing microscopes with centroid method, the proposed microscope comprises a high-speed rotating optical diffuser in which the variation of the image centroid position is reduced and consequently the focusing response is improved. The proposed microscope is characterized and verified experimentally using a laboratory-built prototype. The experimental results show that compared to conventional optics-based autofocusing microscopes, the proposed microscope achieves a more rapid response with no reduction in the focusing accuracy. Consequently, the proposed microscope represents another solution for both existing and emerging industrial applications of automated vision inspection.
UR - https://www.scopus.com/pages/publications/84908311064
UR - https://www.scopus.com/pages/publications/84908311064#tab=citedBy
U2 - 10.1016/j.optlaseng.2014.10.004
DO - 10.1016/j.optlaseng.2014.10.004
M3 - Article
AN - SCOPUS:84908311064
SN - 0143-8166
VL - 66
SP - 294
EP - 300
JO - Optics and Lasers in Engineering
JF - Optics and Lasers in Engineering
ER -