Filter for use with imaging endoscopes
First Claim
Patent Images
1. A filter assembly for use with an imaging endoscope, comprising:
- a filter configured to be coupled externally with a distal end of the imaging endoscope, the filter being made of a dye-impregnated film, the filter being positioned between an imaging lens and a tissue to be imaged, the filter being configured to block excitation light from reaching an image sensor of the endoscope, such that the image-sensor produces fluorescence images, the filter also being configured to pass an amount of blue light such that the image sensor produces white light images of the tissue.
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Abstract
A fluorescence endoscopy video system includes a multi-mode light source that produces light for white light and fluorescence imaging modes. A filter is positioned at the distal end of an imaging endoscope so that the endoscope can produce fluorescence and white light images of a tissue sample.
138 Citations
20 Claims
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1. A filter assembly for use with an imaging endoscope, comprising:
a filter configured to be coupled externally with a distal end of the imaging endoscope, the filter being made of a dye-impregnated film, the filter being positioned between an imaging lens and a tissue to be imaged, the filter being configured to block excitation light from reaching an image sensor of the endoscope, such that the image-sensor produces fluorescence images, the filter also being configured to pass an amount of blue light such that the image sensor produces white light images of the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An endoscope assembly, comprising:
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a white-light imaging endoscope; and a filter configured to be coupled externally with a distal end of the imaging endoscope, the filter being made of a dye-impregnated film, the filter being positioned external to the endoscope in front of between an imaging lens at a distal end of the endoscope and a tissue to be imaged, the filter being configured to block excitation light from reaching an image sensor of the endoscope, such that the image-sensor produces fluorescence images, the filter also being configured to pass an amount of blue light such that the image sensor produces white light images of the tissue. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification