66results about How to "Enhanced light scattering" patented technology

A multilayer structure for sustained conversion of a primary electromagnetic radiation into another electromagnetic radiation characterized by a spectrum of a higher average wavelength is disclosed. Also disclosed are methods of creating and using the inventive multilayer structure.

A conventional semiconductor LED is modified to include a microlenslayer over its light-emitting surface. The LED may have an active layer including at least one quantum well layer of InGaN and GaN. The microlens layer includes a plurality of concave microstructures that cause light rays emanating from the LED to diffuse outwardly, leading to an increase in the light extraction efficiency of the LED. The concave microstructures may be arranged in a substantially uniform array, such as a close-packed hexagonal array. The microlens layer is preferably constructed of curable material, such as polydimethylsiloxane (PDMS), and is formed by soft-lithography imprinting by contacting fluid material of the microlens layer with a template bearing a monolayer of homogeneous microsphere crystals, to cause concave impressions, and then curing the material to fix the concave microstructures in the microlens layer and provide relatively uniform surface roughness.

This invention intends to develop a technique for forming an interlayer with excellent optical characteristics and to provide a photoelectric conversion device having high conversion efficiency. To realize this purpose, a series connection through an intermediate layer is formed in the thin-film photoelectric conversion device of the invention, and the interlayer is a transparent oxide layer in its front surface and n pairs of layers stacked therebehind (n is an integer of 1 or more), wherein each of the pair of layers is a carbon layer and a transparent oxide layer stacked in this order. Film thicknesses of each layer are optimized to improve wavelength selectivity and stress resistance while keeping the series resistance.

An embodiment of the photoelectric conversion device is characterized in that; a transparent insulating substrate is located on the light incidence side, and a transparent conductive layer, at least one photoelectric conversion unit, a transparent electrode layer having electrical conductivity as typified by zinc oxide, a hard carbon layer having electrical conductivity as typified by diamond-like carbon, and a high reflecting electrode layer are stacked in this order on an opposite surface from a light incidence side of the transparent insulating substrate.

Polymer network liquid crystal materials have improved mechanical properties such as rigidity and hardness and substantially improved electro-optical performance. The PNLC material can be manufactured with an emulsion process so as to simplify substantially the manufacturing process. Each LC droplet can be configured with the polymer network extending substantially across the LC droplet, and the polymer network may comprise a material to lower substantially the switching voltage, such as a fluorinated acrylate that may interact with the liquid crystal so as to lower the surface tension of the LC droplet. The PNLC material may comprise an interfacial layer combined with the polymer network so as to decrease substantially the driving voltage.

Systems and methods for preventing or reducing contamination enhanced laser induced damage (C-LID) to optical components are provided including a housing enclosing an optical component, a container configured to hold a gas phase additive and operatively coupled to the housing; and a delivery system configured to introduce the gas phase additive from the container into the housing and to maintain the gas phase additive at a pre-selected partial pressure within the housing. The gas phase additive may have a greater affinity for the optical component than does a contaminant and may be present in an amount sufficient to inhibit laser induced damage resulting from contact between the contaminant and the optical component. The housing may be configured to maintain a sealed gas environment or vacuum.

The invention discloses a preparation method of nitrogen (N)-doped titanium dioxide (TiO2) microspheres. In the invention, urea is used as a nitrogen source, hydrochloric acid is used as a protecting agent of butyl titanate (TBT), and a solvent heat method (ethanol and water mixing liquid is used as a solvent) is adopted for synthesizing the N-doped TiO2 microspheres. According to the method, TiO2 microspheres with good appearance can be prepared, and in addition, nitrogen elements in the urea is utilized for nitrogen doping, so the visible light absorption of the TiO2 microspheres is obviously improved. The method simultaneously realizes the microsphere preparation and the N doping, the preparation process is simple, the cost is low, and in addition, the application range is wide. The preparation method can be used in the fields of catalysis, dye solar cells, and the like.

A lighting apparatus for simulating a neon sign and method of making is provided. An outer housing having a central opening and defining a perimeter of the lighting apparatus can be connected with an inner housing configured as a plurality of symbols for conveying a message. Mounted within the interior of the outer and inner housing can be a series of lighting units such as SMD light emitting diodes. Respective outer housing and inner housing can have a cross-sectional inverted U-shape capped by a base member with the upper member having a curved diffuser for transmitting light through a transmissive plastic resin while integrally mounted black or opaque straight legs of a U-shape can enhance the simulated neon glow.

Composite particles and a method of preparing the composite particles are provided. The composite particles contain titanium dioxide particles with adsorbed two-phase polymer particles. The two-phase polymer particles have a soft polymer phase and a hard polymer phase in which the weight ratio of the hard polymer phase to the soft polymer phase is in the range of 10:1 to 1:5. The composite particles containing the two-phase polymer particles have improved aqueous stability and provide coatings with improved scrub resistance.

A luminous system comprising one or more illumination sources, a multilayer structure, and one or more diffuse reflection layers being optically decoupled from the multilayer structure, wherein the emission and the reflection of the luminous system produce a first observed visible color when the one or more illumination sources are powered and a second observed visible color when the one or more illumination sources are non-powered is disclosed. Also disclosed are methods of creating the inventive luminous system.

Aggregate particles comprising titanium dioxide (TiO₂) nanotubes, methods for making the aggregate particles, photoelectrodes for solar cells including aggregate particles of nanomaterials, methods for making the photoelectrodes, and solar cells that include the photoelectrodes.

There is provided a polymer composition comprising 5 to 100% by mass of a unit (A) of a lactone compound represented by a general formula (1) and 0 to 95% by mass of a unit (B) of (meth)acrylate as constitutional units, wherein the unit (A) of a lactone compound comprises a unit of an (S) isomer represented by a general formula (2) and a unit of an (R) isomer represented by a general formula (3) at a mass ratio of from 70/30 to 30/70; and wherein the polymer composition has a total light scattering loss of not more than 100 dB/km. The polymer composition is excellent in heat resistance and transparency.

The invention relates to a TPU/silica gel composite material. The TPU/silica gel composite material comprises a base cloth layer, a first hot melt adhesive layer, a TPU layer, a second hot melt adhesive layer and a silica gel layer which are successively stacked; and the first hot melt adhesive layer and the second hot melt adhesive layer are both TPU hot melt adhesive layers. The provided high-wear-resistance TPU/silica gel composite material is good in wear resistance, and after the high-wear-resistance TPU/silica gel composite material is ground by 1000 revolutions under the pressure of 9kPa, wear is not obvious, moreover, light scattering of the high-wear-resistance TPU/silica gel composite material is obviously higher than that of a silica gel material, and the flame retardance is good. The silica gel layer is thinned until the thickness of the silica gel layer is suitable, is matched with the hot melt adhesive layers, and firmly adheres to the TPU layer, air bubbles are avoided due to tape casting, and therefore, the material has good light scattering property on the premise of good wear resistance.

A composite particle including a core and a shell, wherein the core has at least one inorganic nanoparticle and the shell is made of vitrified glass, methods for obtaining thereof and uses thereof. The uses include a film having a host material and at least one composite particle and an optoelectronic devise including at least one composite particle or the film.

The invention discloses a plane light source device and a preparation method thereof. The preparation method is characterized in that the bonding force of fluorescent powder and glass substrate can be improved and the luminance of the light source can be improved by adding silica particles when fluorescent powder sizing agent is prepared.