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US 12,660,995 B2Granted
Single chip camera head for multi-spectral imaging and methods of using the same
OwnerGeorge E. Duckett, IIIinventor
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided to enable multiple imaging modalities with a single camera head. The camera head may include a single chip system capable of measuring different wavelengths of light on different regions of the same image sensor to generate different images. The light source in the system can adjust the output spectra by using a plurality of illuminants and filters, and measurements from different light channels from different regions of the image sensor can be used to generate white light images, fluorescence image, perfusion images, fluorescein images, and the like.
Claims25
An endoscopic or exoscopic imaging device, comprising:
- an optical element comprising a dichroic beam splitter configured to separate an input light into at least a first spectrally distinct portion of output light and a second spectrally distinct portion of output light, wherein the dichroic beam splitter is configured to either reflect light with wavelengths shorter than about 500 nm and longer than about 650 nm and transmit light with wavelengths between 500 nm and 650 nm, or is configured to reflect light between about 500 nm and about 650 nm and to transmit light with wavelengths shorter than about 500 nm and longer than about 650 nm;
- and
- an image sensor with a color filter array (CFA), the image sensor positioned so as to receive light from the first spectrally distinct portion of output light at a first region of the image sensor and to receive light from the second spectrally distinct portion of output light at a second region of the image sensor,
- wherein the CFA is configured to receive the first portion of output light and the second portion of output light incident thereon and filter the first portion of output light and the second portion of output light into at least six resulting spectral channels that are spectrally distinct from one another, a first, second, and third spectral channel collected by the first region of the image sensor, and a fourth, fifth, and sixth spectral channel collected by the second region of the image sensor.
1 more element
An endoscopic or exoscopic imaging system, comprising:
- an optical element comprising a dichroic beam splitter configured to separate input light into at least a first spectrally distinct portion of output light and a second spectrally distinct portion of output light that are directed to at least two discrete regions of an image sensor, wherein the dichroic beam splitter is configured to either reflect light with wavelengths shorter than about 500 nm and longer than about 650 nm and transmit light with wavelengths between 500 nm and 650 nm, or is configured to reflect light between about 500 nm and about 650 nm and to transmit light with wavelengths shorter than about 500 nm and longer than about 650 nm;
- a processor;
- and
- a memory storing instructions thereon that, when processed by the processor, cause the processor to:
- receive a first image data, detected by a first region of the image sensor with a color filter array (CFA), the CFA configured to receive the first spectrally distinct portion of output light and the second spectrally distinct portion of light incident thereon and filter the first portion of output light and the second portion of output light into at least six resulting spectral channels that are spectrally distinct from one another, a first, second, and third band of light;
- and
- receive a second image data, detected by a second region of the image sensor with the CFA, a fourth, fifth, and sixth band of light.
4 more elements
An endoscopic or exoscopic imaging system, comprising:
- an optical element comprising a dichroic beam splitter configured to separate an input light into at least a first spectrally distinct portion of output light and a second spectrally distinct portion of output light, wherein the dichroic beam splitter is configured to either reflect light with wavelengths shorter than about 500 nm and longer than about 650 nm and transmit light with wavelengths between 500 nm and 650 nm, or is configured to reflect light between about 500 nm and about 650 nm and to transmit light with wavelengths shorter than about 500 nm and longer than about 650 nm;
- an image sensor with a color filter array (CFA) disposed over a first region and a second region of the image sensor, the CFA configured to receive the first portion of output light and the second portion of output light incident thereon and filter the first portion of output light and the second portion of output light into at least six resulting spectral channels that are spectrally distinct from one another, a first, second, and third spectral channel collected by the first region of the image sensor, and a fourth, fifth, and sixth spectral channel collected by the second region of the image sensor;
- and
- an illumination device that illuminates a scene to be imaged with light containing a first set of wavelengths,
- wherein the imaging system is configured to operate in one or more imaging modes including one or more of:
- a white light imaging mode, an ICG or OTL mode, an oxygenation or perfusion mode, a Cy5 or Cy5.5 mode, and a fluorescein mode.
3 more elements
Dependencies are inferred from the claim text.