| abstract |
An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter ( 18 ) 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 ( 68 ), wherein the first and second polarization states are orthogonal. A first lens ( 22 ) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter ( 18 ), toward the sensor ( 68 ), and obtains image data from the redirected portion of the light having the second polarization state. A long-pass filter ( 15 ) in the return path attenuates light in the second spectral range. Control logic enables the sensor to obtain either the reflectance image or the fluorescence image. |