Chemimage Corporation

Lxd Research & Display, LLC

Chenhui Wang

Patrick J Treado

John Maier

David D Tuschel

Xinghua Wang

Matthew P Nelson

Charles W Gardner, Jr

Robert Schweitzer

Thomas Voigt

Jason Neiss

Joseph E Demuth

G Steven Vanni

Julianne Wolfe

Hailiang Zhang

Disclosed are thermal tuning glazing structures for selectively reflecting electromagnetic radiation for use in dynamically controlling electromagnetic radiation flow in various applications such as intelligent energy saving windows. The thermal tuning glazing structure comprises one or more cholesteric liquid crystal (CLC) panels, each CLC panel comprising a CLC material, the CLC material being in a planar texture at least at one temperature, having a pitch that changes with temperature, and having a broad reflection band.

Thermal tuning glazing structures comprising a cholesteric liquid crystal

The disclosure relates to a portable system for obtaining a spatially accurate wavelength-resolved image of a sample having a first and a second spatial dimension that can be used for the detection of hazardous agents by irradiating a sample with light, forming an image of all or part of the sample using Raman shifted light from the sample, and analyzing the Raman shifted light for patterns characteristic of one or more hazardous agents.

Method and apparatus for compact spectrometer for detecting hazardous agents

The disclosure relates to methods and apparatus for assessing occurrence of one or more hazardous agents in a sample by performing multipoint spectral analysis of the sample using a portable or hand-held device. Methods of employing Raman spectroscopy and other spectrophotometric methods are disclosed. Devices and systems suitable for performing such multipoint methods are also disclosed.

Method and apparatus for compact spectrometer for multipoint sampling of an object

The disclosure relates to a portable system having a fiber array spectral translator ('FAST') for obtaining a spatially accurate wavelength-resolved image of a sample having a first and a second spatial dimension that can be used for the detection of hazardous agents by irradiating a sample with light, forming an image of all or part of the sample using Raman shifted light from the sample, and analyzing the Raman shifted light for patterns characteristic of one or more hazardous agents.

Method and apparatus for compact spectrometer for fiber array spectral translator

The disclosure generally relates to a multimode imaging apparatus for simultaneously obtaining multiple wavelength-discriminative spectral images of a sample. In one embodiment, the apparatus includes an image selector having a rotator assembly, the rotator assembly housing a first plurality of optical components, the image selector adapted to receive a illuminating photons having a first wavelength and direct the illuminating photons to the sample, the image selector adapted to receive illuminating photons interacted with the sample and selectively direct said interacted photons to one of a plurality of detection sources; a microscope turret housing a second plurality of components, the microscope turret adapted to receive illuminating photons having a second wavelength and direct the photons to the sample; the microscopic turret adapted to receive illuminating photons interacted with the sample and selectively direct said interacted photons to one of a plurality of detection sources; wherein substantially all of the interacted photons are selectively directed one of a plurality of detection sources to form multiple wavelength discriminative spectral images of the sample simultaneously.

Method and apparatus for a microscope image selector

A hyper-spectral imaging filter has serial stages along an optical signal path with angularly distributed birefringent retarders and polarizers forming interference filters. The retarders can include tunable birefringent elements such as liquid crystals controlled in unison, fixed retarders and/or combined tunable and fixed birefringences. Distinctly different periodic transmission spectra are provided by different filter stages, each having multiple retarders, in particular with some stages having broad bandpass peaks at wide spectral spacing and other stages have very narrow closely spaced peaks. The respective spectra include at least one tunably selectable band at which the transmission spectra of the filter stages coincide, whereby the salutary narrow bandpass and wide spectral spacing ranges of different stages apply together, resulting in a high finesse wavelength filter suitable for spectral imaging.

Multi-conjugate liquid crystal tunable filter

In one embodiment, the disclosure relates to a method for determining illumination parameters for a sample, the method may include obtaining an absorption band of the sample; obtaining an emission band of the sample and determining the illumination parameters for the sample as a function of the absorption band and the emission band of the sample.

Apparatus and method for defining illumination parameters of a sample

The disclosure generally relates to a method and apparatus for multi-wavelength imaging spectrometer. More specifically, in one embodiment, the disclosure relates to an optical filter for passing photons therethrough. The filter includes a first filter stage and a second filter stage. The first filter stage may include a first retarder element and a first liquid crystal cell. The first element may include an input face and an output face. One of the first element faces is not oriented substantially normal to the trajectory of photons passing through the filter.

Method and apparatus for multiwavelength imaging spectrometer

A hyper-spectral imaging filter has serial stages along an optical signal path in a Solc filter configuration. Angularly distributed retarder elements of equal birefringence are stacked in each stage, with a polarizer between stages. The retarders can include tunable (such as abutted liquid crystals tuned in unison), fixed and/or combined tunable and fixed birefringences. Although the retardations are equal within each stage, distinctly different retardations are used for two or more different stages. This causes some stages to pass narrow bandpass peaks and other stages to have widely spaced bandpass peaks. The transmission functions of the serial stages are superimposed with selected preferably-tunable peaks coinciding. The resulting conjugate filter has a high finesse ratio, and good out of band rejection.

A method and apparatus for compact Fabry-Perot imaging spectrometer is presented. More specifically, in one embodiment, a tunable Fabry-Perot optical filter for providing a spatially accurate wavelength-resolved image of a sample having two spatial dimensions is presented. The optical filter may include plural filter elements having an initial predetermined spacing between adjacent filter elements; and a micro electro-mechanical system ('MEMS') actuator. One of the plural filter elements may be attached to the MEMS actuator so that the actuator is capable of moving the one filter element relative to another of the plural filter elements to thereby tune the Fabry-Perot optical filter.

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Stow, OH, United States of America

Chenhui Wang