Abstract: An image processing system includes a processor configured to receive heat radiation from a scene by a spectropolarimetric imaging system adapted to generate a plurality of spectral frames, generate the plurality of spectral frames associated with the scene, each frame having a plurality of pixels, for each pixel from the generated plurality of spectral frames, extract scene associated spectral information, including pixel-specific temperature representing an object's temperature, and thermal texture factor representing the object's texture, for each of a plurality of materials having a specific emissivity in a library, generate reference spectral information as a function of temperature and thermal texture, match the extracted spectral information for each pixel from the generated plurality of spectral frames to the generated reference spectral information using a statistical method to minimize the associated variation, and extract spectral metadata from the matched reference spectral information for the ass

Abstract: Summary: The invention relates to a temperature sensor, full-A magnetic element (3) that has at least one magnetic Layer (1), its magnetic properties depend on the temperature characterized in that—The magnetic layer (1) has a vortex-shaped magnetization distribution with a magnetic vortex core (2) has, wherein the vortex-shaped magnetization distribution is formed in a layer plane and the vortex core (2) is formed perpendicular to the layer plane,—An excitation unit (15) which is used to excite the vortex-shaped Magnetization distribution to a gyrotropic magnetization motion is provided,—A detection unit (16) for detecting a resonance frequency the gyrotropic magnetization movement is provided and—An evaluation unit (19) for determining a temperature from the resonance frequency of the gyrotropic magnetization movement is provided.

Abstract: A tunable hyperspectral-polarimetric filter system includes a first polarizer, a crystal filter and a second polarizer. The first polarizer is configured to transmit light in a first direction of linear polarization. The polarization selection may be substantially the same for all wavelengths at a spectral range of interest. The crystal filter, may be parallelly and coaxially disposed after the first polarizer. The crystal filter is configured to rotates the first direction of linear polarization for light transmitted by the first polarizer, wherein rotation angles differ for different wavelengths at the spectral range of interest. The second polarizer may be parallelly and coaxially disposed after the crystal filter. The second polarizer may substantially transmit a second direction of linear polarization of the light transmitted by the crystal filter. The first polarizer and/or the second polarizer are rotatable to tune for different transmission spectra for spectral and polarimetric imaging resolution.

Abstract: Imaging systems and methods are disclosed for detecting objects in low photon environments. Embodiments modulate separate groups of photons from the same source, modulate the wavefronts of the separate groups of photons, recombine the modulated photons, utilize information of the recombined photons (such as by utilizing pre-trained reinforcement learning networks and/or by using the Fisher information), and iteratively adjust the manner in which the wavefronts are modulated to detect objects in the sub-Rayleigh region, and in dim regions with a small number of photons, for example, on the order of 10,000 per second or less. Further embodiments determine the iterative modulation patterns utilizing pre-trained reinforcement learning networks.

Abstract: A thermal dual-barrier coating system is disclosed which includes a first thermal barrier layer having a first thermal conductivity, one or more composite structures vertically disposed adjacent the first thermal barrier layer, each of the one or more composite structures includes an ultra-thin disordered semi-continuous metallic film and a layer of a second thermal barrier layer.

Abstract: A method of generating object surface texture in thermal infrared images is disclosed which includes receiving heat radiation from a scene by a spectropolarimetric imaging system, generating a plurality of spectral frames associated with the scene, each frame having a plurality of pixels, for each pixel from the generated plurality of spectral frames, extracting spectral information associated with the scene, including pixel-specific temperature representing an objects temperature, and thermal texture factor representing the objects texture, for each of a plurality of materials having a specific emissivity in a library, generating reference spectral information as a function of temperature and thermal texture, matching the extracted spectral information for each pixel from the generated plurality of spectral frames to the generated reference spectral information using a statistical method to minimize the associated variation, and extracting spectral metadata from the matched reference spectral information for

Abstract: A bolometric imaging system is disclosed which includes an array of nano-pixels, each including an optical stack, each including an absorptive layer where incident radiation is converted to heat which simultaneously acts as a first electrode layer vertically disposed adjacent the Free Layer, a fixed magnetic polarity layer (Fixed Layer) in a first magnetic direction, a barrier layer vertically disposed adjacent to the Fixed Layer, a selective magnetic polarity layer (Free Layer) vertically disposed adjacent to the barrier layer, a second electrode layer vertically disposed adjacent the Fixed Layer. Photons absorbed by the optical stack are converted into heat to thereby switch magnetic polarity in the Free Layer. The switch in polarity does not require the stack to be reset to a neutral state prior to such switching. Each nano-pixel output is a digital signal generated by photons above a pre-determined energy threshold. The system further includes a readout circuit.

Abstract: A thermal emitter is provided, including a periodic structure operating as a metamaterial on an optically thick substrate; the periodic structure thermally emitting at high temperatures in a specified narrow wavelength of a predetermined resonance, the metamaterial including a composite medium of natural materials. The emitter may be part of a thermophotovoltaic device. The thermal emitter may include a plurality of layered films, wherein the distance between each adjacent film is substantially less than the wavelength.

Abstract: An all-dielectric metamaterial cladding is provided that can strongly confine light inside conventional low-index dielectric waveguides for use with photonic integrated circuits and nano-photonic devices. A class of metamaterials with dual electric and magnetic anisotropy along with giant birefringence can provide the ideal quasi-transverse electromagnetic mode propagation inside a glass core. A Transformed Cladding Waveguide can show an order of magnitude decreased cross-talk as compared to conventional waveguides.

Abstract: An all-dielectric metamaterial cladding is provided that can strongly confine light inside conventional low-index dielectric waveguides for use with photonic integrated circuits and nano-photonic devices. A class of metamaterials with dual electric and magnetic anisotropy along with giant birefringence can provide the ideal quasi-transverse electromagnetic mode propagation inside a glass core. A Transformed Cladding Waveguide can show an order of magnitude decreased cross-talk as compared to conventional waveguides.