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Continuously Variable Bandpass Filters for Hyperspectral Imaging

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Hyperspectral imaging (HSI) has been used for a couple of decades in applications such as satellite imaging, air reconnaissance and other not overly price sensitive markets. Classical Hyperspectral imaging cameras use prisms or grating as dispersive elements. These cameras are bulky, sensitive to misalignment and very expensive. The advent of alternative approaches makes HSI attractive for volume markets or even consumer products, for example cancer detection, precision farming, food testing in supermarkets and many more.

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Continuously Variable Bandpass Filters for Hyperspectral Imaging

  1. 1. Motivation
  2. 2. Content
  3. 3. Delta OpticalThin FilmToday
  4. 4. OpticalThin FilmTechnology
  5. 5. Applications
  6. 6. • • • • • • Product Range
  7. 7. Constructionand Properties of Delta’s Filters
  8. 8. Advantages of Delta’s LinearVariable Filters
  9. 9. Examples of Applications
  10. 10. New LVBPFs for HyperspectralImaging
  11. 11. HSI filter 450 nm to 880 nm,24 mm x 36 mm
  12. 12. HSI filter 450 nm to 850 nm,25 mm x 25 mm
  13. 13. LVF based Hyperspectral Imaging detector
  14. 14. Comparison with imec‘s sensor
  15. 15. Comparison with imec‘s sensor
  16. 16. Comparison with imec‘s sensor
  17. 17. Point,Line or Area Scan Spectrometer based on a LinearVariable Bandpass Filter
  18. 18. LVF based Hyperspectral Imaging detector
  19. 19. Working principle
  20. 20. Building the Hyperspectral Imaging data cube
  21. 21. 3D Hyperspectral Imaging
  22. 22. Snapshot sensor with multi-aperture camera
  23. 23. LVF based Hyperspectral Imaging detector – enabling new amazing applications

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