Dual-channels spectral imaging with spectral zooming capability

Bing Chen, Michael R. Wang, Jame J. Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this paper, a dual-channel spectral imaging system with agile spectral band access and spectral bandwidth tuning capability is presented. A diffractive grating is used as the spectral dispersion element for the dual-channel spectral imaging system. A 4-/ spectral filtering channel using an adjustable slit is set up at the first diffraction order of the grating to realize coarse spectral band selection. An acousto-optic tunable filter selectively filters the spectrum of the non-dispersed zero order to realize fine spectral imaging. The spectral zooming function is achieved without increasing spectral frame number facilitating real-time spectral imaging operation. Feasibility of the spectral imaging has been demonstrated through preliminary experiments. Minimum 6 nm spectral resolution and 1.2° field of view have been achieved. The real-time spectral imaging capable of wide spectral band operation without loosing desired fine spectral capability is particularly useful for a variety of defense, medical, and environmental monitoring applications.

Original languageEnglish (US)
Title of host publicationImaging Spectrometry XIII
StatePublished - 2008
EventImaging Spectrometry XIII - San Diego, CA, United States
Duration: Aug 12 2008Aug 13 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherImaging Spectrometry XIII
Country/TerritoryUnited States
CitySan Diego, CA


  • AOTF
  • Fourier transform
  • Spectral imaging
  • Spectral zoom

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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