公开(公告)号：WO0141632A3

公开(公告)日：2002-02-21

申请号：PCT/US0033478

申请日：2000-12-08

Applicant: X RITE INC

Inventor： OVERBECK JAMES L ,  GALEN MICHAEL A ,  VAN ANDEL RICHARD J ,  BOES CHRISTIAN L

IPC: G01J3/51 ,  A61B1/00 ,  A61B1/04 ,  A61B1/24 ,  A61B5/00 ,  G01N21/27 ,  G01N21/57 ,  A61C19/10

CPC classification number: A61B1/24 ,  A61B1/00052 ,  A61B1/00186 ,  A61B1/0669 ,  A61B5/0088 ,  G01J3/0208 ,  G01J3/0264 ,  G01J3/0272 ,  G01J3/0278 ,  G01J3/465 ,  G01J3/508 ,  G01J3/51

Abstract: An instrument and related process for measuring color, shade, gloss, shape and/or translucence of a tooth. First, the instrument uses searchlight illumination to illuminate a tooth with constant irradiance. Second, the instrument uses colorimetric imaging to collect time-separated frames of different wavelengths of light reflected from a tooth and to combine those frames into a color image. Third, the instrument includes a sanitary shield to establish a reference color and a predetermined distance to a target tooth. Fourth, the instrument provides line-of-sight viewing so an operator may simultaneously view a display of the image on the instrument and the object being measured. Fifth, the instrument is impervious to pollutants because it incorporates a sealed measurement window. Sixth, optical measurements of a tooth taken by a dentist are compared to optical measurements of a prosthetic restoration for that tooth to confirm satisfactory matching of optical characteristics of the tooth and restoration.

Abstract translation: 用于测量牙齿的颜色，阴影，光泽，形状和/或半透明度的仪器和相关过程。 首先，仪器使用探照灯照明照射具有恒定辐照度的牙齿。 其次，仪器使用比色成像来收集从牙齿反射的不同波长的光的时间分隔的帧，并将这些帧组合成彩色图像。 第三，仪器包括卫生护罩以建立参考颜色并且与目标牙齿具有预定距离。 第四，仪器提供视线观看，因此操作者可以同时观察仪器上的图像显示和正被测量的物体。 第五，仪器不含污染物，因为它包含一个密封的测量窗口。 第六，将由牙医取得的牙齿的光学测量值与该牙齿的假体修复体的光学测量值进行比较，以确认牙齿和修复体的光学特性的令人满意的匹配。