发明名称 THREE-DIMENSIONAL ORAL CAVITY SCAN DEVICE USING PIEZOELECTRIC ELEMENT BASED PATTERN MODULE AND VARIABLE FOCUS LENS
摘要 The present invention relates to a three-dimensional oral cavity scan device for digital impression taking that obtains a three-dimensional image by processing a two-dimensional image acquired by photographing a subject within an oral cavity that has a three-dimensional shape, the device comprising: a pattern mask that converts incident parallel light into structured light; a piezoelectric plate in which a mechanical vibration is generated on the surface thereof by means of an AC voltage applied thereto; and a power supply unit that applies an AC voltage to the piezoelectric plate, wherein the piezoelectric plate moves the pattern mask in the longitudinal direction of the piezoelectric plate using the mechanical vibration generated on the surface thereof. According to the present invention, the oral cavity scan device has an advantage of causing less noise and vibration by moving the pattern mask using the electrical method. In addition, the present invention has an advantage of more accurately measuring the depth of teeth by electrically controlling the focal length of structured light projected on the teeth.
申请公布号 WO2016171412(A1) 申请公布日期 2016.10.27
申请号 WO2016KR03511 申请日期 2016.04.05
申请人 KOREA PHOTONICS TECHNOLOGY INSTITUTE 发明人 EOM, Joo Beom;AHN, Jaesung;LEE, Byeong Il;SHIN, In Hee;PARK, Anjin;LEE, Byeong Ha
分类号 A61C19/04;A61B6/14 主分类号 A61C19/04
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