TY - JOUR
T1 - Aided Imaging Phase Measuring Deflectometry Based on Concave Focusing Mirror
AU - Li, Ziyu
AU - Gao, Nan
AU - Meng, Zhaozong
AU - Zhang, Zonghua
AU - Gao, Feng
AU - Jiang, Jane
N1 - Funding Information:
The authors wish to acknowledge the support of the National Natural Science Foundation of China (under Grant No. 52075147) and the Research Funds for Interdisciplinary Postgraduates (No. HEBUT-Y-XKJC-2022112).
Publisher Copyright:
© 2023 by the authors.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - With the rapid development of aerospace, high-speed train, and automotive industries, the demand for the measurement of high-precision specular components is increasing. The acquisition of high-precision three-dimensional (3D) data is conducive to improving the performance of and extending the service life of these components. However, the existing 3D measurement methods of specular surfaces are affected by the inherent limitation of the depth of field (DOF) of camera lenses. Based on the principle of paraxial reflection imaging of a concave mirror, this paper introduces a concave mirror into a phase measuring deflectometry (PMD) system and proposes an aided imaging PMD (AIPMD) based on a concave focusing mirror. The proposed system realizes the clear imaging of the encoded patterns and the surface under test in the DOF of the camera lens, simultaneously. Meanwhile, the iterative coefficient specular reconstruction algorithm is studied based on this system. The feasibility and accuracy of the proposed method are verified by simulations and experiments.
AB - With the rapid development of aerospace, high-speed train, and automotive industries, the demand for the measurement of high-precision specular components is increasing. The acquisition of high-precision three-dimensional (3D) data is conducive to improving the performance of and extending the service life of these components. However, the existing 3D measurement methods of specular surfaces are affected by the inherent limitation of the depth of field (DOF) of camera lenses. Based on the principle of paraxial reflection imaging of a concave mirror, this paper introduces a concave mirror into a phase measuring deflectometry (PMD) system and proposes an aided imaging PMD (AIPMD) based on a concave focusing mirror. The proposed system realizes the clear imaging of the encoded patterns and the surface under test in the DOF of the camera lens, simultaneously. Meanwhile, the iterative coefficient specular reconstruction algorithm is studied based on this system. The feasibility and accuracy of the proposed method are verified by simulations and experiments.
KW - concave focusing mirror
KW - phase measuring deflectometry
KW - specular surface
KW - three-dimensional shape measurement
UR - http://www.scopus.com/inward/record.url?scp=85160545386&partnerID=8YFLogxK
U2 - 10.3390/photonics10050519
DO - 10.3390/photonics10050519
M3 - Article
AN - SCOPUS:85160545386
VL - 10
JO - Photonics
JF - Photonics
SN - 2304-6732
IS - 5
M1 - 519
ER -
