naa a22 4500 510823769 CHVBK 20180411083546.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s12541-013-0077-z doi (NATIONALLICENCE)springer-10.1007/s12541-013-0077-z Collimating illumination and piezoelectric transducer based 3D intraoral scanner [Elektronische Daten] [Furqan Ullah, Gun Lee, Kang Park] Due to the restrictions of size and volume on the 3D scanner for dental applications, it is not easy to perform non-contact profile scanning in the mouth cavity. In this paper, a piezoelectric transducer and collimating illumination based 3D intraoral scanner is presented for the measurement of tooth profiles in the mouth cavity. The phase-shifting technique is used along with an accurate calibration method for the measurement of the tooth profile. Experimental and theoretical inspection of the phase-to-coordinate relation is presented. In addition, a nonlinear system model is proposed for collimating illumination that gives a more accurate mathematical representation of the system, thus improving the shape measurement accuracy. Simulation and optical measurement results are presented to verify the feasibility and performance of the developed system. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 3D intraoral scanner nationallicence 3D measurement system nationallicence Virtual 3D Scanner nationallicence Fringe projection nationallicence Phase-to-coordinates nationallicence Ullah Furqan Graduate School of Mechanical Engineering, Myongji University, San 38-2 Namdong, Cheoin-Gu, Yongin, 449-728, Gyeonggi-Do, South Korea aut Lee Gun Graduate School of Mechanical Engineering, Myongji University, San 38-2 Namdong, Cheoin-Gu, Yongin, 449-728, Gyeonggi-Do, South Korea aut Park Kang Dept. of Mechanical Engineering, Myongji University, San 38-2 Namdong, Cheoin-Gu, 449-728, Yongin, Gyeonggi-Do, South Korea aut International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/4(2013-04-01), 567-576 2234-7593 14:4<567 2013 14 12541 https://doi.org/10.1007/s12541-013-0077-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0077-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ullah Furqan Graduate School of Mechanical Engineering, Myongji University, San 38-2 Namdong, Cheoin-Gu, Yongin, 449-728, Gyeonggi-Do, South Korea aut NATIONALLICENCE 700 1- Lee Gun Graduate School of Mechanical Engineering, Myongji University, San 38-2 Namdong, Cheoin-Gu, Yongin, 449-728, Gyeonggi-Do, South Korea aut NATIONALLICENCE 700 1- Park Kang Dept. of Mechanical Engineering, Myongji University, San 38-2 Namdong, Cheoin-Gu, 449-728, Yongin, Gyeonggi-Do, South Korea aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/4(2013-04-01), 567-576 2234-7593 14:4<567 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer