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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 17,
  • Issue 1,
  • pp. 011101-
  • (2019)

Snapshot imaging spectrometer based on a microlens array

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Abstract

This Letter proposes a snapshot imaging spectrometer, which obtains the spectral information and spatial information in one “shot”. The device proposed can achieve the data cube size of 21×29×40 in the waveband of 400–800 nm. The core element of this system is the microlens array, which contains 60×60 microlenses in a square arrangement, each microlens has an aperture of 125 μm×125 μm, and the F number is 15. The microlens array is mounted in a rotation mount, which provides 360° of rotation around the optical axis to maximize the spectral resolution. The final resolution of the system is about 10 nm.

© 2019 Chinese Laser Press

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