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Proceedings Paper

Application of LC and LCoS in Multispectral Polarized Scene Projector (MPSP)
Author(s): Haiping Yu; Lei Guo; Shenggang Wang; Jack Lippert; Le Li
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Paper Abstract

A Multispectral Polarized Scene Projector (MPSP) had been developed in the short-wave infrared (SWIR) regime for the test & evaluation (T&E) of spectro-polarimetric imaging sensors. This MPSP generates multispectral and hyperspectral video images (up to 200 Hz) with 512×512 spatial resolution with active spatial, spectral, and polarization modulation with controlled bandwidth. It projects input SWIR radiant intensity scenes from stored memory with user selectable wavelength and bandwidth, as well as polarization states (six different states) controllable on a pixel level. The spectral contents are implemented by a tunable filter with variable bandpass built based on liquid crystal (LC) material, together with one passive visible and one passive SWIR cholesteric liquid crystal (CLC) notch filters, and one switchable CLC notch filter. The core of the MPSP hardware is the liquid-crystal-on-silicon (LCoS) spatial light modulators (SLMs) for intensity control and polarization modulation.

Paper Details

Date Published: 15 February 2017
PDF: 8 pages
Proc. SPIE 10125, Emerging Liquid Crystal Technologies XII, 1012519 (15 February 2017); doi: 10.1117/12.2265910
Show Author Affiliations
Haiping Yu, Kent Optronics, Inc. (United States)
Lei Guo, Kent Optronics, Inc. (United States)
Shenggang Wang, Kent Optronics, Inc. (United States)
Jack Lippert, Kent Optronics, Inc. (United States)
Le Li, Kent Optronics, Inc. (United States)

Published in SPIE Proceedings Vol. 10125:
Emerging Liquid Crystal Technologies XII
Liang-Chy Chien, Editor(s)

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