Spatial light modulation and optical mixing for snapshot hyperspectral imaging architectures

C. Harrison Brodie; Christopher M. Collier

doi:10.1117/12.2594261

1 August 2021 Spatial light modulation and optical mixing for snapshot hyperspectral imaging architectures

C. Harrison Brodie, Christopher M. Collier

Proceedings Volume 11836, Unconventional Imaging and Adaptive Optics 2021; 118360M (2021) https://doi.org/10.1117/12.2594261
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

A snapshot hyperspectral imaging architecture is presented which forgoes time-based scanning through use of a sensor diode and liquid crystal arrays for amplitude modulation. Incident light is partitioned into discrete image pixels, frequency encoded, via projection onto spatial and spectral modulation liquid crystal arrays, with resultant sum and difference frequency components manifesting from optical mixing. A hyperspectral image is reconstructed by means of a Fourier analysis which uncovers the associated frequency components according to each pixel modulation frequency. The presented snapshot hyperspectral imaging architecture is investigated in terms of the optical geometry, theoretical and experimental operation, and substantiated via simulation.

Conference Presentation

Citation Download Citation

C. Harrison Brodie and Christopher M. Collier "Spatial light modulation and optical mixing for snapshot hyperspectral imaging architectures", Proc. SPIE 11836, Unconventional Imaging and Adaptive Optics 2021, 118360M (1 August 2021); https://doi.org/10.1117/12.2594261

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