Design and fabrication of an ultraviolet-visible coded aperture snapshot spectral imager

Published

Journal Article

We describe the design and performance of a coded aperture spectral imager with a wide spectral range of 320 to 700nm over 87 channels and 1988-by-1988 pixels of spatial resolution. A custom-designed relay lens was designed and built for the system, including a dispersive prism element in the collimated space of the relay lens. The optical design process, prescription, and performance are reported for the entire system, including calibration and alignment. Simulations of high-resolution spectral images are conducted to verify the reconstruction algorithm and relative resolution of the instrument compared to ground truth data. Measured data were taken with the instrument using both a random coded aperture and standard slit for spatial resolution comparisons. Finally, reconstructed spectral images from the instrument are presented of a sunlight-illuminated flower from 360 to 700nm. © 2012 Society of Photo-Optical Instrumentation Engineers.

Full Text

Duke Authors

Cited Authors

  • Kittle, DS; Marks, DL; Brady, DJ

Published Date

  • July 1, 2012

Published In

Volume / Issue

  • 51 / 7

Electronic International Standard Serial Number (EISSN)

  • 1560-2303

International Standard Serial Number (ISSN)

  • 0091-3286

Digital Object Identifier (DOI)

  • 10.1117/1.OE.51.7.071403

Citation Source

  • Scopus