Abstract: A low-emission combustor head structure with a V-shaped trailing edge vane solves the problems of a combustor head structure with short service life and uneven outlet air flow leading to poor combustion stability. The low-emission combustor head structure includes a pilot stage and a main stage, where the pilot stage includes a swirler, a venturi, and a centrifugal nozzle. The main stage includes an oblique radial swirler, a swirler vane, a V-shaped trailing edge vane, an annular fuel manifold, and direct injection nozzles. The oblique radial swirler of the main stage ensures swirl intensity while reducing the axial length of the swirler head. The discrete multi-point direct injection nozzles of the main stage enable the initial pressure atomization, and the V-shaped trailing edge structure enhances fuel droplet breakup and mixing. Thus, the fuel is fully premixed in the swirling passage, greatly reducing pollutant emissions, thereby achieving ultra-low emissions.

Abstract: A device for measuring a wall surface cooling characteristic of a gas turbine combustor and a modeling method thereof are provided. The device includes a hot flow inlet section, a cold flow inlet section, and a gas discharge section, where the cold flow inlet section is communicated with an experimental section; the cooling structure model is a flat plate structure; a tail end of the experimental section is provided with a thermocouple threading seat; the gas discharge section is provided with a laser injection window; and the experimental section is provided with an infrared thermal imaging measurement window and a visual observation window. The modeling method includes: modeling the wall surface of the gas turbine combustor into the flat plate structure; determining a pressure, a temperature, and a velocity on a hot flow side of the device; and determining a material and a thickness of the cooling structure model.

Abstract: A device for measuring a wall surface cooling characteristic of a gas turbine combustor and a modeling method thereof are provided. The device includes a hot flow inlet section, a cold flow inlet section, and a gas discharge section, where the cold flow inlet section is communicated with an experimental section; the cooling structure model is a flat plate structure; a tail end of the experimental section is provided with a thermocouple threading seat; the gas discharge section is provided with a laser injection window; and the experimental section is provided with an infrared thermal imaging measurement window and a visual observation window. The modeling method includes: modeling the wall surface of the gas turbine combustor into the flat plate structure; determining a pressure, a temperature, and a velocity on a hot flow side of the device; and determining a material and a thickness of the cooling structure model.

Abstract: The present application provides a multi-frame quality enhancement method and device for a lossily compressed video. The method comprises: performing quality enhancement on the i-th frame of a decompressed video stream using m frames correlated with the i-th frame to play the i-th frame with enhanced quality. The m frames are frames in the video stream. The number of the same pixels or corresponding pixels of each of the m frames and the i-th frame is greater than a preset threshold. m is a natural number greater than 1. In an implementation, a non-peak-quality frame positioned between two peak quality frames may be enhanced using the peak quality frames. The method may mitigate the quality fluctuation across a plurality of frames for providing playback of the video stream and may improve the quality of all frames in the video after the lossy compression.

Abstract: The present application provides a multi-frame quality enhancement method and device for a lossily compressed video. The method comprises: performing quality enhancement on the i-th frame of a decompressed video stream using m frames correlated with the i-th frame to play the i-th frame with enhanced quality. The m frames are frames in the video stream. The number of the same pixels or corresponding pixels of each of the m frames and the i-th frame is greater than a preset threshold. m is a natural number greater than 1. In an implementation, a non-peak-quality frame positioned between two peak quality frames may be enhanced using the peak quality frames. The method may mitigate the quality fluctuation across a plurality of frames for providing playback of the video stream and may improve the quality of all frames in the video after the lossy compression.

Abstract: A system for protecting a head lamp of a motor vehicle includes at least one headlamp protector device. The at least one headlamp protector device is adapted to be coupled to a bumper beam and adapted to be coupled to a crush can. The at least one headlamp protector device extends beyond the end of the bumper beam to protect the head lamp during an impact event.

Abstract: UV photoresist materials are disclosed, based on EPON 154 or EPON 165. Preferred embodiments, based on a composite of EPON 154 and EPON 165, spread evenly into a flat, uniform layer, even without spin-coating. The preferred embodiments bond strongly to all substrates, and are resistant to cracking and debonding following exposure and development. The preferred embodiments have high UV transmittance, which promotes uniform photopolymerization throughout a thick layer. Structures may be produced by UV lithography that have a sidewall quality that has previously been attainable only by photolithography with a collimated x-ray source.

Abstract: A system for protecting a head tamp of a motor vehicle. The system includes at least one headlamp protector device. The at least one headlamp protector device is adapted to be coupled to a bumper beam and adapted to be coupled to a crush can. The at least one headlamp protector device extends beyond the end of the bumper beam to protect the head lamp during an impact event.

Abstract: An accurate and inexpensive integral micro-optical system for coupling and aligning optical fibers with other optical components, such as other optical fibers, diffusers, beam shapers, beam splitters, mirrors, or lenses is disclosed. The micro-optical coupler disclosed comprises one or more fiberport collimators and one or more microlens arrays, optically aligned during fabrication so that an optical fiber, or other source of light, was coupled to another optical fiber, or other light receiver, by simple inserting the optical source in one side of the micro-coupler and inserting the optical receiver in the other side of the micro-coupler. Often the fabrication process for this system can be done in a single lithography procedure. Since the optical axis of each component was aligned during the fabrication step, no subsequent alignment was required.

Abstract: An inexpensive device and method of fabricating microlenses able to be pre-aligned with other optical components (e.g., mirrors, splitters, and prisms, cylindrical lenses, plano-plates and prisms) fabricated on the same substrate to form an integrated optical platform. This integrated optical platform enhances optical systems by reducing coupling losses, cross-talking, and dispersion, and allowing for the simultaneous optical focusing of one or more light beams in a true, three-dimensional arrangement. The novel device comprises an optical lens having an out-of-plane orientated, optical axis (i.e., the optical axial is parallel to the substrate on which the optical bench system is located) with a quasi-parabolic surface.

Abstract: An accurate and inexpensive integral micro-optical system for coupling and aligning optical fibers with other optical components, such as other optical fibers, diffusers, beam shapers, beam splitters, mirrors, or lenses is disclosed. The micro-optical coupler disclosed comprises one or more fiberport collimators and one or more microlens arrays, optically aligned during fabrication so that an optical fiber, or other source of light, was coupled to another optical fiber, or other light receiver, by simple inserting the optical source in one side of the micro-coupler and inserting the optical receiver in the other side of the micro-coupler. Often the fabrication process for this system can be done in a single lithography procedure. Since the optical axis of each component was aligned during the fabrication step, no subsequent alignment was required.

Abstract: An inexpensive device and method of fabricating micromixers able to enhance the mixing efficiency of fluids by inducing diffusion and turbulence mixing within the micromixer, and by increasing the interfacial surface contact between fluids is disclosed. The device is a passive micromixer capable of mixing at least two different fluids (e.g., a DNA sample and a reagent) by creating impinging plumes of fluid using at least two or more arrays of micro-nozzles sized and shaped to cause the plumes to impact each other directly or interfacially. This novel, passive micromixer may be fabricated on a single substrate using a newly developed lithography technology for thick films of SU-8 resist.

Abstract: An inexpensive device and method of fabricating microlenses able to be pre-aligned with other optical components (e.g., mirrors, splitters, and prisms, cylindrical lenses, plano-plates and prisms) fabricated on the same substrate to form an integrated optical platform. This integrated optical platform enhances optical systems by reducing coupling losses, cross-talking, and dispersion, and allowing for the simultaneous optical focusing of one or more light beams in a true, three-dimensional arrangement. The novel device comprises an optical lens having an out-of-plane orientated, optical axial (i.e., the optical axial is perpendicular to the substrate on which the optical bench system is located) with a quasi-parabolic surface.

Abstract: A new and unique method for fabricating a microlens array is provided. First, a mask layer is applied to an optical substrate. One or more holes are then created in the mask layer so that corresponding first cavities can then be created in the substrate. Each of these first cavities has a predetermined depth and a first width. The mask layer is then removed so that one or more second cavities can be created in the substrate, the second cavities corresponding with the first cavities. Each of these second cavities has approximately the same predetermined depth as the corresponding first cavity and having a second width greater than the first width.