43results about How to "Reduced Diffusion Effects" patented technology

An optical element, includes: a diffractive functional layer which diffracts at least part of incident light; and a grid formed on a first surface of the diffractive functional layer, the grid including a plurality of fine wires and having a polarization separation function; wherein the optical element reflects a part of the incident light while transmitting another part of the incident light, the first surface of the diffractive functional layer including: a plurality of first regions; a plurality of second regions, a height thereof relative to a second surface of the diffractive functional layer being different from that of the first regions, the second surface being an opposite surface to the first surface; and a step provided at a border between the first regions and the second regions.

An optical element, includes: a diffractive functional layer which diffracts at least part of incident light; and a grid formed on a first surface of the diffractive functional layer, the grid including a plurality of fine wires and having a polarization separation function; wherein the optical element reflects a part of the incident light while transmitting another part of the incident light, the first surface of the diffractive functional layer including a plurality of first regions; a plurality of second regions, a height thereof relative to a second surface of the diffractive functional layer being different from that of the first regions, the second surface being an opposite surface to the first surface; and a step provided at a border between the first regions and the second regions.

A side-gusset bag has front and back face panels each having two longitudinally extending side edges. Two folded side panels are each joined to the face panels at the side edges and each having a center longitudinally extending crease between the respective side edges. A handle assembly consists of a pair of substantially identical handle halves each formed by two longitudinally spaced ends fixed to one of the side folds to a respective side of the crease thereof and a middle section extending between the respective ends and formed unitarily therewith of plastic film. The middle sections are transversely spaced and form an open longitudinally extending gap at least 2 mm wide and aligned with the respective crease. The middle sections extend transversely over less than 80% of a transverse width of the one side fold and have outer edges space at least 5 mm from the respective side edges.

The invention relates to an air hydrostatic bearing of a machine making free piston type reciprocating motion. The air hydrostatic bearing comprises a piston, a cylinder, a discharger, a compressing cavity and an air storage groove, wherein a first orifice, a first annular shallow groove and a first pressure equalizing shallow groove are formed in the outer side of the outer circumference of the outer sleeve of the piston along the circumferential direction; the first pressure equalizing shallow groove is communicated with the first annular shallow groove at two sides of the first orifice; the first orifice is communicated with the first annular shallow groove through the first pressure equalizing shallow groove; double-row second orifices are formed in the outer side of the outer circumference of the inner sleeve of the piston along the circumferential direction; a second annular shallow groove and a second pressure equalizing shallow groove are formed in the inner side of the inner circumference; the second pressure equalizing shallow groove is communicated with the second annular shallow groove at two sides of the second orifices; and the second orifices are communicated with the second annular shallow groove through the second pressure equalizing shallow groove. The bearing capacity and air film rigidity of the air hydrostatic bearing are improved, the service life of the piston is prolonged, the air consumption is lowered and the efficiency of the machine making free piston type reciprocating motion is increased.

A display device includes a display panel, at least one light source, a diffusion plate, an optical member, and a plurality of adhesive layers. The diffusion plate diffuses light from the at least one light source. The optical member is disposed between the diffusion plate and the at least one light source and has at least one transmitting portion that transmits the light from the at least one light source and a reflective portion that reflects the light from the at least one light source. The adhesive layers bond the optical member and the diffusion plate with an air layer therebetween. The adhesive layers are arranged spaced apart from each other in a direction in which the optical member extends. The air layer has the same thickness as the adhesive layers and is located between an adjacent pair of the adhesive layers.

The invention provides a method for preparing a plasma nitrided gate dielectric layer. The method is characterized in that the method includes the steps of providing a substrate, forming a silicon dioxide layer on the substrate and doping nitrogen into a silicon oxide layer under the temperature condition of minus 100 degrees to 0 degree. With the nitrogen doped under the low temperature of minus 100 degrees to 0 degree; diffusion effect of nitrogen ions is reduced; more nitrogen ions gather on the upper surface of the silicon dioxide layer; more bonding between Si-O bond and nitrogen ions is interrupted; nitrogen content on the upper surface of the plasma nitrided gate dielectric layer is increased. Thus, not only is leakage current density reduced but also a high gate capacitance is provided. Furthermore, reliability of the device is improved, and B+ is inhibited from diffusing from gate polysilicon to gate oxide.

The present invention provides a terahertz modulator based on a silicon-based microstructure on SOI and its preparation method and modulation system. The terahertz modulator includes from bottom to top: the underlying Al 2 o 3 Substrate, SiO 2 Isolation layer, silicon-based microstructure, Al 2 o 3 passivation layer, silicon-based microstructure in SiO 2 Periodically arranged on the isolation layer, each silicon-based microstructure includes two layers of square Si-based step structures, and the modulation system includes: a semiconductor laser, a laser modulator, a terahertz modulator, a terahertz radiation source, and a terahertz detector. The present invention For terahertz waves from 0.4THz to 0.85THz, the reflectivity is below 22%, reaching the lowest 18% at 0.82THz, which can significantly reduce the reflectivity of modulation devices to terahertz waves and improve the utilization of terahertz waves; in power Under the irradiation of 1200mw 808nm laser, the modulation depth reaches 64.5%. Compared with the traditional silicon-based terahertz modulator, the terahertz imaging diffusion area effectively improves the resolution in the imaging system to more than 21.9%.