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Title: Tunable electro-optic filter stack

A holographic polymer dispersed liquid crystal (HPDLC) tunable filter exhibits switching times of no more than 20 microseconds. The HPDLC tunable filter can be utilized in a variety of applications. An HPDLC tunable filter stack can be utilized in a hyperspectral imaging system capable of spectrally multiplexing hyperspectral imaging data acquired while the hyperspectral imaging system is airborne. HPDLC tunable filter stacks can be utilized in high speed switchable optical shielding systems, for example as a coating for a visor or an aircraft canopy. These HPDLC tunable filter stacks can be fabricated using a spin coating apparatus and associated fabrication methods.
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Issue Date:
OSTI Identifier:
Drexel University CHO
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2011 Oct 29
Research Org:
Drexel Univ., Philadelphia, PA (United States)
Sponsoring Org:
Country of Publication:
United States

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