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Narrow band in-vivo imaging device

  • US 9,730,573 B2
  • Filed: 03/20/2007
  • Issued: 08/15/2017
  • Est. Priority Date: 03/20/2007
  • Status: Active Grant
First Claim
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1. An in-vivo imaging device for providing at least first and second narrow band images of an in-vivo target area, the in-vivo imaging device comprising:

  • a first type and a second type of narrow band illumination sources of light radiation for simultaneously illuminating the target area and giving rise to reflected radiation therefrom, the first and second types of illumination sources having non-overlapping first and second illumination spectra; and

    an imager to simultaneously capture said at least first and second images based on simultaneously receiving the radiation reflected from the target area by illumination from the first and second types of illumination sources, the imager comprising an array of a first and a second types of light sensitive elements covered by wavelength sensitive filters and having differing first and second sensitivity spectra, the first and the second types of light sensitive elements being responsive to the first and the second illumination spectra, respectively,wherein values of full width half maximum (FWHM) of the first and the second illumination spectra are less than values of FWHM of the first and the second sensitivity spectra, respectively,wherein values of center wavelength and of FWHM of the first illumination spectrum are such that an overlap between the first sensitivity spectrum and the first illumination spectrum is larger than an overlap between the first sensitivity spectrum and the second illumination spectrum,and wherein values of center wavelength and of FWHM of the second illumination spectrum are such that an overlap between the second sensitivity spectrum and the second illumination spectrum is larger than an overlap between the second sensitivity spectrum and the first illumination spectrum.

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