Abstract: An example SPR detection system includes a first prism having a first surface adjacent to a first metal layer exposed to a sample gas, and a second prism having a second surface adjacent to a second metal layer exposed to a reference gas. At least one light source is configured to provide respective beams to the first and second surfaces, where each of the beams causes SPR of a respective one of the metal layers. At least one photodetector is configured to measure a reflection property of reflections of the respective beams from the metal layers during the SPR. A controller is configured to determine whether a target gas is present in the sample gas based on a known composition of the reference gas and at least one of an electrical property of the first and second metal layers during the SPR and the reflection property of the metal layers.

Abstract: A water-based acrylic latex paint has a dispersant-over-pigment (DOP) ratio between 0.5 and 1.5 to form a coating in which the pigment has a low concentration and is highly dispersed throughout to absorb in the visible band to produce a color (e.g., black) and is transmissive in the NIR and SWIR bands. The variables that determine absorption in the visible band and transmission in the NIR and SWIR bands include the DOP ratio, a pigment weight percentage between 1-2% in the paint and a coating thickness between 2 and 4 mil. To control the viscosity, the dispersing agent is suitably an acrylate-based block co-polymer, of molecular weight above 2,000 grams per mole, that includes an amine-functional block to anchor onto the pigment.

Abstract: A light emitting diode display panel may comprise a substrate, a plurality of light emitting diodes located over the substrate, and an optical assembly located over the plurality of light emitting diodes. The optical assembly may include a lens array and a diffuser. An inner surface of the lens array may define a plurality of inner curves.

Abstract: A method is disclosed herein, including detecting, by a processor, a signal received from a camera, the signal including an image. The method further includes processing, by the processor, the received signal to identify an image included in the signal and determining, by the processor, that the signal includes a discreet message, the discreet message is embedded within an image. The method further includes decrypting, by the processor, the discreet message embedded within the signal and sending, by the processor, the decrypted message to be displayed.

Abstract: A photoacoustic detection system includes a detector that has a chamber, a pulsed light source, piezoelectric tuning forks, and a photosensor. The chamber has an inlet and an outlet for flow of an analyte. The pulsed light source is adjacent the chamber and is operable to emit a light beam along a path through the chamber. The tuning forks are arranged along the path, and each of the tuning forks is operable to emit first sensor signals. The photosensor is arranged along the path and is operable to emit second sensor signals. A controller is connected to receive the first and second sensor signals. The controller is configured to determine whether a target species is present in the analyte based on the first sensor signals and determine whether the target species is present in the analyte based on the second sensor signals.

Abstract: A photoacoustic detection system (20) includes a detector (22) that has a chamber (24), a pulsed light source (26), piezoelectric tuning forks (28), and a photosensor (30). The chamber has an inlet and an outlet for flow of an analyte. The pulsed light source is adjacent the chamber and is operable to emit a light beam along a path through the chamber. The tuning forks are arranged along the path, and each of the tuning forks is operable to emit first sensor signals. The photosensor is arranged along the path and is operable to emit second sensor signals. A controller (38) is connected to receive the first and second sensor signals. The controller is configured to determine whether a target species is present in the analyte based on the first sensor signals and determine whether the target species is present in the analyte based on the second sensor signals.

Abstract: A method of foreign object debris discrimination incudes illuminating particulates located within a sensing volume with a first electromagnetic radiation pulse emitted from a first source, and illuminating the particulates within the sensing volume with a second electromagnetic radiation pulse emitted from a second source, wherein the second electromagnetic radiation pulse has a second wavelength range within the terahertz (THz) regime. The first electromagnetic radiation returns and the second electromagnetic radiation returns are compared to determine a scattering ratio from the comparing step. The scattering ratio is then utilized to determine a resultant foreign object debris type of the solid objects.

Abstract: A light emitting diode display panel may comprise a substrate, a plurality of light emitting diodes located over the substrate, and an optical assembly located over the plurality of light emitting diodes. The optical assembly may include a lens array and a diffuser. An inner surface of the lens array may define a plurality of inner curves.

Abstract: A method of foreign object debris discrimination includes illuminating a particle located within a sensing volume with a modulated electromagnetic radiation pulse emitted from a source; receiving one or more electromagnetic radiation return signals that have been scattered by the particle illuminated by the modulated electromagnetic radiation pulse at a detector; mixing, using a controller, the electromagnetic radiation return signal of amplitude IRS and frequency fRS with a reference signal of amplitude ILS and frequency fRS; analyzing, using the controller, an amplitude of the mixed signal ?{square root over (ILSIRS)}, and frequency of the mixed signal, fRS?fLS; and classifying, using the controller, a particle position, a velocity, and electromagnetic characteristic of the particle based on the amplitude, ?{square root over (ILSIRS)}, and frequency, fRS?fLS of the mixed signal.

Abstract: A method of foreign object debris discrimination incudes illuminating particulates located within a sensing volume with a first electromagnetic radiation pulse emitted from a first source, and illuminating the particulates within the sensing volume with a second electromagnetic radiation pulse emitted from a second source, wherein the second electromagnetic radiation pulse has a second wavelength range within the terahertz (THz) regime. The first electromagnetic radiation returns and the second electromagnetic radiation returns are compared to determine a scattering ratio from the comparing step. The scattering ratio is then utilized to determine a resultant foreign object debris type of the solid objects.

Abstract: A hazardous gas detector that includes a housing defining an interior region is provided. Also included is a laser emitting component oriented to emit a laser light away from the housing. Further included is a lens disposed within an aperture defined by the housing, the lens allowing returning infrared light of the laser light to enter the interior region. Yet further included is a mirror disposed within the interior region and oriented to split the returning laser light into a short wave infrared light and a long wave infrared light. Also included is a one-dimensional (1D) camera pixel array disposed within the interior region, the 1D camera imaging a planar region that includes an illuminated portion comprising the short wave infrared light.

Abstract: A system and method. The system may include an eye tracking system. The eye tracking system may include a short-wave infrared (SWIR) light source configured to emit SWIR light at between 900 nanometers (nm) and 1,700 nm wavelength onto an environment, a SWIR sensitive image sensor configured to capture images of the environment illuminated by the SWIR light source, and a processor communicatively coupled to the SWIR sensitive image sensor. The processor may be configured to: receive image data from the SWIR sensitive image sensor; track movement of an eye of a user based on the image data; and output eye tracking system data indicative of the tracked movement of the eye of the user.

Abstract: A system and method. The system may include an eye tracking system. The eye tracking system may include a short-wave infrared (SWIR) light source configured to emit SWIR light at between 900 nanometers (nm) and 1,700 nm wavelength onto an environment, a SWIR sensitive image sensor configured to capture images of the environment illuminated by the SWIR light source, and a processor communicatively coupled to the SWIR sensitive image sensor. The processor may be configured to: receive image data from the SWIR sensitive image sensor; track movement of an eye of a user based on the image data; and output eye tracking system data indicative of the tracked movement of the eye of the user.

Abstract: A device for detecting a hazardous condition in an area includes a housing defining a chamber. There is at least one smoke sensing device for detecting the presence of smoke in the chamber. An extremely-high frequency detector includes at least one extremely-high frequency transmitter positioned relative to at least one extremely-high frequency receiver.

Abstract: A device for detecting a hazardous condition in an area includes a housing defining a chamber. There is at least one smoke sensing device for detecting the presence of smoke in the chamber. An extremely-high frequency detector includes at least one extremely-high frequency transmitter positioned relative to at least one extremely-high frequency receiver.

Abstract: A photoacoustic detection system (20) includes a detector (22) that has a chamber (24), a pulsed light source (26), piezoelectric tuning forks (28), and a photosensor (30). The chamber has an inlet and an outlet for flow of an analyte. The pulsed light source is adjacent the chamber and is operable to emit a light beam along a path through the chamber. The tuning forks are arranged along the path, and each of the tuning forks is operable to emit first sensor signals. The photosensor is arranged along the path and is operable to emit second sensor signals. A controller (38) is connected to receive the first and second sensor signals. The controller is configured to determine whether a target species is present in the analyte based on the first sensor signals and determine whether the target species is present in the analyte based on the second sensor signals.

Abstract: An example SPR detection system includes a first prism having a first surface adjacent to a first metal layer exposed to a sample gas, and a second prism having a second surface adjacent to a second metal layer exposed to a reference gas. At least one light source is configured to provide respective beams to the first and second surfaces, where each of the beams causes SPR of a respective one of the metal layers. At least one photodetector is configured to measure a reflection property of reflections of the respective beams from the metal layers during the SPR. A controller is configured to determine whether a target gas is present in the sample gas based on a known composition of the reference gas and at least one of an electrical property of the first and second metal layers during the SPR and the reflection property of the metal layers.

Abstract: A hazardous gas detector that includes a housing defining an interior region is provided. Also included is a laser emitting component oriented to emit a laser light away from the housing. Further included is a lens disposed within an aperture defined by the housing, the lens allowing returning infrared light of the laser light to enter the interior region. Yet further included is a mirror disposed within the interior region and oriented to split the returning laser light into a short wave infrared light and a long wave infrared light. Also included is a one-dimensional (1D) camera pixel array disposed within the interior region, the 1D camera imaging a planar region that includes an illuminated portion comprising the short wave infrared light.