Hyperspectral plenoptic camera

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  • Publication Date:
    September 07, 2021
  • Additional Information
    • Patent Number:
      11115,573
    • Appl. No:
      16/413231
    • Application Filed:
      May 15, 2019
    • Abstract:
      Methods, systems, and apparatuses for a hyperspectral plenoptic camera. A hyperspectral plenoptic camera may be configured with a filter in the aperture plane of the camera. The filter may selectively transmit radiated wavelengths to a microlens array, which may focus and transmit the wavelengths to an image sensor based on, e.g., the location and intensity of the wavelengths. One or more lenses and/or an iris may be configured to collect, focus, and/or transmit wavelengths to and from the filter. The filter may be located between two lenses, and the distance between the two lenses may be based on a diameter of an aperture of the plenoptic camera.
    • Inventors:
      UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA (Washington, DC, US); AUBURN UNIVERSITY (Auburn University, AL, US)
    • Assignees:
      UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA (Washington, DC, US)
    • Claim:
      1. A plenoptic camera, comprising: a filter located between a first lens and a second lens in an aperture plane of the plenoptic camera, wherein the filter is configured to selectively permit transmission of wavelengths; a micro lens array, wherein each micro lens of the micro lens array is configured to, based on a location of the wavelengths, focus the wavelengths from the filter; wherein a distance between the micro lens array and the second lens is based on a diameter of an aperture of the plenoptic camera; and an image sensor, configured to receive the focused wavelengths.
    • Claim:
      2. The plenoptic camera of claim 1 , wherein one of the two lenses is configured to be adjusted with respect to the image sensor.
    • Claim:
      3. The plenoptic camera of claim 1 , wherein the filter is configured to selectively transmit a continuous range of wavelengths.
    • Claim:
      4. The plenoptic camera of claim 1 , further comprising: an iris, configured to focus the wavelengths relative to the image sensor.
    • Claim:
      5. The plenoptic camera of claim 1 , wherein the filter is located in the aperture plane of the plenoptic camera such that a center of the filter is imaged by a center of a first micro lens of the micro lens array.
    • Claim:
      6. A method comprising: receiving, via an aperture of a plenoptic camera, wavelengths; filtering, using a filter located between a first lens and a second lens located in an aperture plane of the plenoptic camera, the wavelengths, wherein the filtering comprises selectively permitting transmission of the wavelengths; focusing, via a micro lens array and based on a location of the wavelengths, the wavelengths onto a sensor, wherein a distance between the micro lens array and the second lens is based on a diameter of an aperture of the plenoptic camera; and outputting, by the plenoptic camera and using an image sensor, an indication of the location and intensity of the wavelengths.
    • Claim:
      7. The method of claim 6 , wherein one of the two lenses is configured to be adjusted with respect to the image sensor.
    • Claim:
      8. The method of claim 6 , wherein the filter is configured to selectively transmit a continuous range of wavelengths.
    • Claim:
      9. The method of claim 6 , further comprising: focusing, using an iris of the plenoptic camera and based on a location of the image sensor, the wavelengths.
    • Claim:
      10. The method of claim 6 , wherein the filter is located in the aperture plane of the plenoptic camera such that a center of the filter is imaged by a center of a first micro lens of the micro lens array.
    • Claim:
      11. A system comprising: a filter located between a first lens and a second lens in an aperture plane of a plenoptic camera, and a sensor region of the plenoptic camera; wherein the filter is configured to: receive, via an aperture, wavelengths; and filter the wavelengths by selectively transmitting a first set of the wavelengths to the sensor region; and wherein the sensor region is configured to: receive the first set of the wavelengths; and focus, using a micro lens array and based on a location of the wavelengths, the wavelengths onto an image sensor, wherein a distance between the micro lens array and the second lens is based on a diameter of an aperture of the plenoptic camera.
    • Claim:
      12. The system of claim 11 , wherein one of the two lenses is configured to be adjusted with respect to the image sensor.
    • Claim:
      13. The system of claim 11 , wherein the filter is configured to selectively transmit a continuous range of wavelengths.
    • Claim:
      14. The system of claim 11 , further comprising: an iris, configured to focus the wavelengths relative to the image sensor.
    • Patent References Cited:
      2015/0116526 April 2015 Meng
      2015/0146082 May 2015 Kim
      2015/0234102 August 2015 Kurzweg
      2016/0278637 September 2016 Gao







    • Other References:
      Fahringer et al., “Design of a Multi-Color Plenoptic Camera for Snapshot Hyperspectral Imaging”, American Institute at Aeronautics and Astronautics, pp. 1-9. cited by applicant
      Hagen et al., “Review of Snapshot Spectral Imaging Technologies,” Optical Engineering, vol. 52, 2013, p. 90901. cited by applicant
      Gang et al., “Temperature Profiling of Pulverised Coal Flames Using Multi-Colour Pyrometric and Digital Imaging Techniques,” 2005 IEEE Instrumentationand Measurement Technology Conference Proceedings, 2005, pp. 1658-1662, vol. 3. cited by applicant
      Adelson et al., “The Pienoptic Function and the Elements of Early Vision,” Computational Models of Visual Processing, 1991, pp. 3-20. cited by applicant
      Adelson et al., “Single Lens Stereo with a Plenoptic Camera,” IEEE Transactions on Pattern Analysis and Machine Intelligence, 1992, pp. 99-106, vol. 14. cited by applicant
      Levoy et al., “Light Field Rendering,” Proceedings of the 23rd Annual Conference on Computer Graphics and Interactive Techniques—SIGGRAPH '96, 1996, pp. 31-42. cited by applicant
      Ng et al., “Light Field Photography with a Hand-held Plenoptic Camera,” Informational, 2005, pp. 1-11. cited by applicant
      Danehy et al., “A Plenoptic Multi-Color Imaging Pyrometer,” 55th AIAA Aerospace Sciences Meeting, 2017, pp. 1-7. cited by applicant
    • Primary Examiner:
      Selby, Gevell V
    • Attorney, Agent or Firm:
      Gorman, Shawn P.
      Soike, Jonathan B.
      Galus, Helen M.
    • Accession Number:
      edspgr.11115573