Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1991-05-22
1993-01-05
Evans, F. L.
Optics: measuring and testing
For optical fiber or waveguide inspection
356326, 356376, G01B 1124, G01J 350
Patent
active
051775565
ABSTRACT:
Three dimensional digital imaging of the profile of a surface of an object is improved to include the collection of data on the color of the surface, this result being achieved with only minor changes to a monochromatic 3-D camera and without the complications of multiple detectors or multiple color filters. The surface is scanned with an incident beam of light that contains a plurality of wavelengths including at least one well defined wavelength, e.g. either three well defined wavelengths corresponding respectively to the primary colors, or a continuum of visible light plus one well defined wavelength outside such continuum. The return beam that is analyzed to generate the digital profile data is dispersed into a plurality of separate return beams according to wavelength, the relative intensities of such separate return beams providing the color data.
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P. J. Besl "Active, Optical Range Imaging Sensors" published in Machine Vision and Applications (1988) 1:127-152.
Evans F. L.
National Research Council of Canada
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