Imaging system for combined full-color reflectance and near-infrared imaging
First Claim
1. An imaging system for acquisition of NIR images and full-color images comprising:
- a light source providing visible light and NIR light to an area under observation, the visible light comprising blue illumination light, green illumination light, and red illumination light, the blue illumination light being reflected from the tissue as blue reflectance light, the green illumination light being reflected from the tissue as green reflectance light, and the red illumination light being reflected from the tissue as red reflectance light;
a camera having one or more image sensors;
a controller in signal communication with the light source and the camera for illuminating the area under observation with the blue illumination light continuously and illuminating the area under observation with the red illumination light and the NIR illumination light, wherein at least one of the red illumination light and NIR illumination light is switched on and off periodically according to a predetermined timing scheme, andsimultaneously acquiring a first image signal corresponding to the blue illumination light, a second image signal corresponding to the green illumination light, and a third image signal corresponding to the red illumination light and NIR illumination light; and
determining the red reflectance light and detected NIR light from the third image signal, based on the timing scheme, andwherein the imaging system is configured to generate the full-color reflectance and NIR images of the area under observation.
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Accused Products
Abstract
An imaging system for acquisition of NIR and full-color images includes a light source providing visible light and NIR light to an area under observation, such as living tissue, a camera having one or more image sensors configured to separately detect blue reflectance light, green reflectance light, and combined red reflectance light/detected NIR light returned from the area under observation. A controller in signal communication with the light source and the camera is configured to control the light source to continuously illuminate area under observation with temporally continuous blue/green illumination light and with red illumination light and NIR excitation light. At least one of the red illumination light and NIR excitation light are switched on and off periodically in synchronism with the acquisition of red and NIR light images in the camera.
340 Citations
19 Claims
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1. An imaging system for acquisition of NIR images and full-color images comprising:
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a light source providing visible light and NIR light to an area under observation, the visible light comprising blue illumination light, green illumination light, and red illumination light, the blue illumination light being reflected from the tissue as blue reflectance light, the green illumination light being reflected from the tissue as green reflectance light, and the red illumination light being reflected from the tissue as red reflectance light; a camera having one or more image sensors; a controller in signal communication with the light source and the camera for illuminating the area under observation with the blue illumination light continuously and illuminating the area under observation with the red illumination light and the NIR illumination light, wherein at least one of the red illumination light and NIR illumination light is switched on and off periodically according to a predetermined timing scheme, and simultaneously acquiring a first image signal corresponding to the blue illumination light, a second image signal corresponding to the green illumination light, and a third image signal corresponding to the red illumination light and NIR illumination light; and determining the red reflectance light and detected NIR light from the third image signal, based on the timing scheme, and wherein the imaging system is configured to generate the full-color reflectance and NIR images of the area under observation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification