Apparatus for caries detection
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United States of America Patent
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Dec 13, 2011
Grant Date -
Jul 1, 2010
app pub date -
Mar 15, 2010
filing date -
Oct 13, 2006
priority date (Note) -
In Force
status (Latency Note)
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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.
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