Rongguang Liang,Victor C. Wong,Michael A. Marcus,Mark E. Bridges,Paul O. McLaughlin,Peter D. Burns,David L. Patton
申请号：
US13485996
公开号：
US20120237890A1
申请日:
2012.06.01
申请国别(地区):
US
年份:
2012
代理人:
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.
