Projection of subsurface structure onto an object's surface
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United States of America Patent
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Dec 13, 2011
Grant Date -
Jun 8, 2006
app pub date -
Jul 1, 2005
filing date -
Jan 19, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
An imaging system illuminates an object with infrared light to enhance visibility of buried structure beneath the surface of the object, and projects a visible light image of the buried structure onto the surface of the object. The system may include an infrared light source for generating the infrared light and a structure for diffusing the infrared light. The diffusing structure may include one or more layers of diffusing material for diffusing the light. The system further includes a video imaging device for receiving the infrared light reflected from the object and for generating a video image of the buried structure based on the reflected infrared light. The buried structure may be a subcutaneous blood vessel. A calibration procedure is described as well as embodiments for ensuring that the object is maintained in focus at the correct distance.
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