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Scannerless loss modulated flash color range imaging
   
Document Number
US Patent 7420656
Issued Date
September 2, 2008
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Abstract
Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.
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Number of Claims:
27
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Owner
Sandia Corporation (Albuquerque, NM)
Published
September 2, 2008
Application Number
11/841,050
Filed
August 20, 2007
US Classification
356/5.09  
Int'l Classification
G01C   3/08   (20060101)  
Assistant Examiner
USPTO Field of Search
356/3.01   356/2   356/3.15   356/4.01   356/2   356/3.1   356/5.01   356/2   356/3.15   356/01   356/2   356/3   356/139.01   356/2   356/3.1  
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