发明名称 |
OPTICAL MEASUREMENT DEVICE AND RELATED PROCESS |
摘要 |
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.
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申请公布号 |
WO0141632(A3) |
申请公布日期 |
2002.02.21 |
申请号 |
WO2000US33478 |
申请日期 |
2000.12.08 |
申请人 |
X-RITE INCORPORATED |
发明人 |
OVERBECK, JAMES, L.;GALEN, MICHAEL, A.;VAN ANDEL, RICHARD, J.;BOES, CHRISTIAN, L. |
分类号 |
G01J3/51;A61B1/00;A61B1/04;A61B1/24;A61B5/00;G01N21/27;G01N21/57;(IPC1-7):A61B5/00;A61C19/10 |
主分类号 |
G01J3/51 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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