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Near infrared imaging

  • US 9,877,654 B2
  • Filed: 08/14/2012
  • Issued: 01/30/2018
  • Est. Priority Date: 02/07/2006
  • Status: Active Grant
First Claim
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1. An elongated lens system in an endoscope or wand for fluorescence and visible light imaging, comprising:

  • a first lens group comprising an objective assembly;

    a second lens group comprising a relay lens group; and

    an ocular lens group,wherein the relay lens group comprises a plurality of light transmitting members each comprising a transmitting glass surface facing an air space and an optical coating on the transmitting glass surface, wherein each coated light transmitting member is configured to reflect between 0.5% and 5% of first and second wavelengths of interest, wherein the first wavelength of interest is in the infrared spectrum and the second wavelength of interest is in the visible spectrum.

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