公开(公告)号：US10070791B2

公开(公告)日：2018-09-11

申请号：US14708404

申请日：2015-05-11

申请人： Carestream Dental Technology Topco Limited

发明人： Rongguang Liang ,  Victor C. Wong ,  Michael A. Marcus ,  Mark E. Bridges ,  Paul O. McLaughlin ,  Peter D. Burns ,  David L. Patton

IPC分类号： A61B1/04 ,  A61B5/00 ,  A61B1/06 ,  G01B11/24 ,  G01J3/02 ,  G01J3/10 ,  G01J3/50 ,  G01N21/47 ,  G01N21/64 ,  A61B1/24 ,  A61C1/08 ,  G01B9/02 ,  G01J3/44 ,  G01N21/17

CPC分类号： A61B5/0088 ,  A61B1/043 ,  A61B1/0607 ,  A61B1/0638 ,  A61B1/0646 ,  A61B1/0684 ,  A61B1/24 ,  A61B5/0035 ,  A61B5/0066 ,  A61B5/0071 ,  A61B5/0075 ,  A61B5/4547 ,  A61B5/742 ,  A61B5/7425 ,  A61C1/088 ,  G01B9/02091 ,  G01B11/2441 ,  G01J3/02 ,  G01J3/0213 ,  G01J3/0224 ,  G01J3/0272 ,  G01J3/10 ,  G01J3/4406 ,  G01J3/508 ,  G01N21/4795 ,  G01N21/6445 ,  G01N21/6456 ,  G01N21/6486 ,  G01N2021/1787

摘要： An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.