Tunable electro-optic filter stack

Fontecchio, Adam K.; Shriyan, Sameet K.; Bellingham, Alyssa

Tunable electro-optic filter stack

Patent · 08 January 2019

OSTI ID:1495680

Fontecchio, Adam K.; Shriyan, Sameet K.; Bellingham, Alyssa

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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Research Organization:: Drexel Univ., Philadelphia, PA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG02-08ER86355;

Assignee:: Drexel University (Philadelphia, PA)

Patent Number(s):: 10,175,106

Application Number:: 15/665,596

OSTI ID:: 1495680

Country of Publication:: United States

Language:: English

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