Oral stereoscopic scanning device capable of detecting the tooth surface outline and accurately checking whether the tooth is decayed

Abstract

A stereoscopic scanning device is applied by a stereoscopic scanning method and includes a projection module and an imaging module. The projection module emits a visible beam to a structural light generator to project a structural light pattern onto a target object, and further emits an invisible beam to the target object for generating a first excitation beam and/or a second excitation beam. The imaging module includes an optical sensor and a color filter. The optical sensor receives the structural light pattern and the excitation beams. The color filter has a first filtering region and a second filtering region. The first filtering region allows penetration of the visible beam and the first excitation beam, and blocks transmission of the second excitation beam. The second filtering region allows penetration of the visible beam and the second excitation beam, and blocks transmission of the first excitation beam.