A light-emitting device includes a transparent light guide plate and a light source that irradiates light onto the light guide plate, in which a plurality of dot-shaped light-emitting concave portions having light output surfaces that output incident light derived from the light source from light-emitting surfaces are formed on the light guide plate, and a diffraction grating, which is an assembly of grooves paralleled at a constant pitch, is formed on each of the light output surfaces of the dot-shaped light-emitting concave portions.

An NVIS-compatible backlight assembly for an LCD display comprises a short-wavelength (blue) light source positioned in a first layer and a photoluminescent layer positioned adjacent the first layer for transforming blue monochrome emission from the blue light source into tri-color light for use as a full-color light source. Radiance in NVIS-sensitive regions can be minimised to avoid unwanted bloom or halo effects..

An NVIS-compatible backlight assembly for an LCD display comprising a short-wavelength (blue) light source positioned in a first layer and a photoluminescent layer positioned adjacent the first layer for transforming blue monochrome emission from the blue light source into tri-color light for use as a full-color light source, while minimizing radiance in NVIS-sensitive regions.

The present application relates to modified sulfur, to a method for preparing same, and to an apparatus for preparing same. The modified sulfur is radioactive or includes a fine structure such as a fibrous structure, a tabular structure, or a network structure. The modified sulfur may be prepared by a process of inducing polymerization or aging using ultrasonic waves. The modified sulfur may have various excellent characteristics such as anticorrosion, water resistance, strength, and high-speed drying, and such characteristics may be adjusted based on the viscosity or the degree of polymerization. Further, as the modified sulfur has the above-described characteristics, the modified sulfur can be applied to an anticorrosive material or water-resistant material, and the modified sulfur can be used in the production of an anticorrosive material and water-resistant material having superior workability and hardening properties, resistance to salt spray, weldability, and the like at an optimum level, and particularly having improved adhesion. Further, when the modified sulfur is applied to an asphalt composition, gelation and depression can be reduced, physical properties such as flexural strength and tensile strength can be improved, and excellent work stability at normal temperatures can be ensured.

A semiconductor ceramic contains a donor element solid-solved in crystal grains of a SrTiO3-based compound, and an acceptor element in a grain boundary layer. The number of tetravalent acceptor elements is 1×1017/g or more, as determined from an electron spin resonance absorption spectrum. A mixture of a calcined powder and an acceptor compound is pulverized to a specific surface area of 5.0 to 7.5 m2/g before mixing with a binder. Semiconductor ceramic layers having a varistor function are formed by using the semiconductor ceramic forming a highly reliable capacitor which can suppress characteristics variations to stably obtain good electrical characteristics.

To provide an optical member in which crystallization is suppressed and which has a porous glass layer on a base material. An optical member has a base material (1) and a porous glass layer (2) which is formed on the base material (1) and has a three-dimensional through pore, in which the existence ratio of crystals of 0.2 micrometer or more in the porous glass layer (2) is 1.0% or lower. The optical member is manufactured by heating a glass powder layer at a temperature elevation rate of 50 degree/min or higher to form a base glass layer which is then phase separated and etched.

The first and second media are coupled via evanescent waves generated by surface phonon polaritons thermally excited on surfaces of the first and second media. The first and second media made of the same material are disposed with a gap formed therebetween for cutting off thermal conduction and the heat transfer between them is performed mainly via the thermally excited evanescent waves. A third medium is provided on a surface of the first medium on a side toward the second medium. Heat flux which flows from the second medium to the first medium in a first state in which the second medium has a first temperature TH and the first medium has a second temperature TL lower than the TH differ in intensity from heat flux which flows from the first to the second medium in a second state in which the first medium has the TH and the second medium has the TL.

Polymer nanoparticles and related methods include polymer dots having a coating including a polyelectrolyte polymer. The polymer dots can have a polyelectrolyte coating that can improve colloidal stability of the particles as compared to polymer dots not having the coating. A method of preparing a population of nanoparticles. The methods can include, e.g., providing the population of nanoparticles having a condensed semiconducting polymer; and combining, in a first aqueous solution comprising polyelectrolytes, the population of nanoparticles having the condensed semiconducting polymer to form a population of nanoparticles having a polyelectrolyte coating surrounding the condensed semiconducting polymer of each of the nanoparticles in the population. The methods can include a step of forming the condensed semiconducting polymer using nanoprecipitation or miniemulsion techniques. The polyelectrolyte coating can completely surround the condensed semiconducting polymer.

A stack of layers 100, a lamp, a luminaire and a method of manufacturing a stack of layers is disclosed. The stack of layers 100 comprises a first outer layer 102, a second outer layer 106 and a luminescent layer 104. The first outer layer 102 and the second outer layer 106 are of a light transmitting polymeric material and have an oxygen transmission rate lower than 30 cm 3 /(m 2 -day) measured under standard temperature and pressure (STP). The luminescent layer 104 is sandwiched between the first outer layer 102 and the second outer layer 106 and comprises a light transmitting matrix polymer and a luminescent material 108 being configured to absorb light according to an absorption spectrum and convert a portion of the absorbed light towards light of a light emission spectrum.

Disclosed is a high thermally conductive composite, including a first composite and a second composite having a co-continuous and incompatible dual-phase manner. The first composite consists of glass fiber distributed in polyphenylene sulfide (PPS), acrylonitrile-butadiene-styrene copolymer (ABS), polybutylene terephthalate (PBT), poly(epsilon-caprolactam) (Nylon 6), polyhexamethylene adipamide (nylon 66), or polypropylene (PP). The second composite consists of carbon material distributed in polyethylene terephthalate.