Narrow band in-vivo imaging device
First Claim
Patent Images
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.
1 Assignment
0 Petitions
Accused Products
Abstract
An in-vivo imaging device for capturing one or more narrow band images of the gastrointestinal tract, or other body lumens or cavities of a patient, using one or more narrow band illumination sources and an imager having an array of light sensitive elements.
-
Citations
25 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An in-vivo imaging device for narrow band imaging comprising:
-
a plurality of narrow band illumination sources having non-overlapping corresponding illumination spectra; and an imager comprising a plurality of light sensitive elements covered by wavelength sensitive filters and having differing corresponding sensitivity spectra arranged in a mosaic array for capturing a plurality of narrow band images simultaneously, wherein each of the plurality of light sensitive elements is responsive to a corresponding illumination spectra, wherein values of full width half maximum (FWHM) of each of the plurality of illumination spectra is less than the corresponding values of FWHM of sensitivity spectra, respectively, and wherein values of FWHM of each of the plurality of illumination spectra are such that for each pair of corresponding illumination source and light sensitive element, an overlap between sensitivity spectrum of the light sensitive element and the corresponding illumination spectrum is larger than overlaps of the sensitivity spectrum and illumination spectra of other illumination sources. - View Dependent Claims (15, 16, 17)
-
-
18. A method for providing a plurality of narrow band images of an in-vivo target area by an in-vivo imaging device, the method comprising:
-
simultaneously illuminating the target area by a plurality of narrow band illumination sources of light radiation having non-overlapping corresponding illumination spectra; and capturing the plurality of narrow band images simultaneously based on simultaneously receiving radiation reflected from the target area by an imager comprising an array of a plurality of light sensitive elements covered by wavelength sensitive filters and having differing corresponding sensitivity spectra, wherein each of the plurality of light sensitive elements is responsive to a corresponding illumination spectra, wherein values of full width half maximum (FWHM) of each of the plurality of illumination spectra are less than the corresponding values of FWHM of sensitivity spectra, respectively, and wherein values of FWHM of each of the plurality of illumination spectra are such that for each pair of corresponding illumination source and light sensitive element, an overlap between sensitivity spectrum of the light sensitive element and the corresponding illumination spectrum is larger than overlaps of the sensitivity spectrum and illumination spectra of other illumination sources. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
-
Specification