46results about How to "Avoid light scattering" patented technology

A semiconductor light emitting device with improved efficiency in extracting light is provided. The semiconductor light emitting device comprises a first conductive type semiconductor layer, a light emitting layer, and a second conductive semiconductor layer stacked in this order, electrodes respectively connected to the first and second conductive semiconductor layers, the electrode connected to the second conductive type semiconductor layer comprising a lower conductive oxide film and an upper conductive oxide film disposed on the lower conductive oxide film, and a metal film disposed only on the upper conductive oxide film. The upper and lower conductive oxide films comprise an oxide including at least one element selected from the group consisting of zinc (Zn), indium (In), tin (Sn), and magnesium (Mg).

A hybrid optoelectronic device and method of producing the hybrid device in which the hybrid device includes a substrate with an input region configured to accept input light, a sol-gel glass multimode interference region coupled to and contiguous with the input region and configured to accept and replicate the input light as multiple self-images, and a sol-gel glass output region contiguous with the multimode region and configured to accept and to output the multiple self-images. Alternatively, the hybrid optoelectronic device includes a substrate with a photoelectronic device, a surface resonator including a light-emitting part of the photelectronic device and configured to resonate light from the photoelectronic device to produce a laser light, and a grating outcoupler contiguous with the surface resonator and configured to diffract the laser light outward from the grating outcoupler and to electrically vary an index of refraction of the outcoupler and change a direction of the diffracted laser light.

This invention provides an antimicrobial glass which exhibits excellent dispersing ability into a resin and excellent transparency besides generating small yellowing and a method for manufacturing the antimicrobial glass. In the antimicrobial glass capable of releasing an Ag ion, a shape of the antimicrobial glass is formed into a polyhedron and, at the same time, an average particle size of the antimicrobial glass is set to a value within a range of 0.1 to 300 mum.

An organic light-emitting display device that is transparent and prevents distortion of an image transmitted therethrough by preventing light from scattering during image display. The organic light-emitting display device comprises a plurality of pixels, in which each pixel includes a light transmission area, a light emitting area, and a light absorption area. The light transmission area is configured to pass visible light incident thereto. The light absorption is configured to absorb visible light incident thereto.

A nanofiber sheet that has a high degree of transparency, a high modulus of elasticity, a low coefficient of linear thermal expansion as well as high degrees of flatness and smoothness, in particular, a nanofiber sheet produced as a uniform and flat sheet having a high optical transmittance with cellulose as the only component. This sheet has the following characteristics: Calculated for a thickness of 60 μm, the transmittance for parallel rays of light having a wavelength of 600 nm is equal to or higher than 70%; The Young's modulus measured in accordance with the JIS K7161 method is equal to or greater than 10 GPa; The coefficient of linear thermal expansion measured in accordance with the ASTM D606 method is equal to or smaller than 10 ppm/K.

A photosensitive resin composition for flexographic printing comprising dispersed particles of (1) a core phase mainly composed of a non-crosslinkable hydrophobic polymer (A) having a glass transition temperature at 5° C. or lower, and (2) a shell phase covering the core phase which is mainly composed of a hydrophilic polymer; and (3) a matrix phase mainly composed of a mixture of a hydrophobic polymer (B) which is immiscible with the hydrophobic polymer (A) and a non gaseous ethylenic unsaturated compound. The difference between refractive index of said hydrophobic polymer (A) of the core phase (1) and that of the mixture of said hydrophobic polymer (B) and said ethylenic unsaturated compound of the matrix phase (3) is 0.010 or less, thereby decreasing light scattering in the resin. The photosensitive resin composition can be developed with an aqueous developer and has wide light exposure latitude, improved printing reproducibility and improved aqueous ink resistance.

An object of the present invention is to provide a light emitting device which increases the emission efficiency of phosphor by reducing self-absorption of light by phosphor and by reducing absorption of fluorescent light by an encapsulating resin, and which increases the efficiency of light extraction from the phosphor layer by preventing light scattering caused by the phosphor.

The above object was achieved by a light emitting device comprising a semiconductor light emitting element and a phosphor layer wherein the phosphor layer was made dense by setting specific values for particle distribution of phosphor contained in the phosphor layer and for the packing ratio of the phosphor contained in the phosphor layer.

A light emitting diode of this invention comprises: a base substrate having a pair of electrode portions; a light emitting element mounted on the base substrate and electrically connected to the electrode portions; a reflection cup placed on the base substrate to surround the light emitting element; and a resin sealant sealing the light emitting element; wherein the base substrate is formed with a raised portion on an upper surface thereof and the light emitting element is placed on a top surface of the raised portion so that side surfaces of the light emitting element are situated higher than a lower end of the reflection cup. With this construction, light emitted from the side surfaces of the light emitting element can be extracted efficiently in an upward direction.

Disclosed herein are a switch assembly and an air conditioner having the same. A switch and a circuit board of the switch assembly are detachably coupled to each other, thus resulting in enhanced maintenance and workability. The switch assembly includes a switch to sense an electrical signal of a human body, a conductive connector to provide the switch with an elastic force, and a circuit board adapted to receive the electrical signal through the connector so as to perform a control operation. The circuit board is detachably coupled with the switch.

An object of the present invention is to provide a lead-free bismuth glass wherein decrease of the degree of accuracy of the patterning is prevented. Specifically, the present invention provides a lead-free bismuth glass characterized in that said lead-free bismuth glass is used for an optical patterning glass material which is patterned by light irradiation and the optical-absorption coefficient to light with a wavelength of 365 nm is 300 to 3000 cm⁻¹.

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.

A display capable of performing ambient light detection with a high accuracy is provided. The display device is a display device having a backlight and a photo sensor for detecting ambient light and outputting a photocurrent according to an intensity of the ambient light, and further including a light-shielding member disposed below the photo-sensor for shielding light from the backlight; and a pseudo photo sensor disposed above the light-shielding member around the photo sensor. The pseudo photo sensor is made of the same material as the photo sensor, and formed in the same process as the photo sensor.

The invention belongs to the technical field of sensor preparation, and discloses construction of an ultra-sensitive electrochemiluminescence sensor and an application thereof to the aspect of trinitrotoluene detection. Micromolecular Luminol monosodium salt with negative electricity is inserted into hydrotalcite layers, hydrotalcite with Luminol intercalation and quantum dots with negative electricity are used in order to form an ECL sensor with a supermolecular composite film by means of electrostatic attraction layer by layer self assembly technology, and an ECL resonant energy transfer (ERET) system for detecting TNT is formed. The sensor is doublet detection, the ERET method is used for substantially enhancing ECL signals of luminal-quantum dots, and sensitivity and accuracy of TNT detection are substantially improved. In addition, the sensor has long service life and good stability; the sensor has small volume, high sensitivity, and low reagent loss, and is portable; the sensor can satisfy needs of TNT detection at the present stage.

A manufacturing method is provided for a light modulation device that improves utilization efficiency of light. After forming a first reflective layer using a metallic material such as Pt or the like, on a substrate, a light modulating film is formed using an electro-optic material in which refractive index changes in accordance with an applied electrical field. After that, planarization is carried out so that irregularities on an upper surface of the light modulating film are less than or equal to 1/100 of the wavelength of light incident on the light modulation device. A transparent electrode is then formed using ITO, ZnO, or the like, on the light modulating film, and a second reflective layer including a dielectric multilayer is formed.

A photoreceptor for electrophotography and an electrophotography device having the same reduces wear loss of the photoreceptor surface and stably obtaining a favorable image for long time. The photoreceptor for electrophotography includes a conductive substrate and a charge transport layer provided on the conductive substrate. The charge transport layer contains a charge transport material, a resin binder, and an inorganic oxide filler surface-treated with a silane coupling agent. A difference (ΔSPa) in a dipole-dipole force component that is a Hansen solubility parameter between the charge transport material and the silane coupling agent satisfies a relationship ΔSPa<1.0. A difference (ΔSPb) in a London dispersion force component that is a Hansen solubility parameter between the resin binder and the silane coupling agent satisfies a relationship ΔSPb<2.5.

The invention discloses a green phthalocyanine compound having a structure represented by a formula (I). The structure of the precursor of the green phthalocyanine compound is represented by a formula(II). Under the protection of nitrogen, the precursor represented by the formula (II), metal salts, and a solvent are added into a dry reaction bottle, the dry reaction bottle is vacuumized, then nitrogen is filled into the dry reaction bottle; under the protection of nitrogen, a catalyst is added, and the reaction bottle is heated to a temperature of 100 to 190 DEG C to carry out reactions for 1to 20 hours under the protection of nitrogen to prepare the phthalocyanine compound represented by the formula (I). During the synthesis process, no halogenation reaction is needed, thus the safety of the synthesis process is high, and the environmental load is low. Moreover, the solubility of the green phthalocyanine compound is high, can be used as a novel soluble dye, and is capable of being dissolved in a molecule form. The technical process is largely simplified. At the same time, the dye can be made into a uniform solution, the light scattering caused by insoluble pigment particles is avoided, and high resolution and high contrast are realized.