626 results about "Phosphor" patented technology

A phosphor plate includes a plate-like composite including a base material and a phosphor contained in the base material, in which the base material contains spinel, the phosphor includes a phosphor containing a Si element, and in an X-ray diffraction pattern of the phosphor plate using a Cu-Kα ray, in a case in which peak intensity corresponding to the spinel having a diffraction angle 2θ in a range of 36.0° or more and 37.4° or less is set to 1, total intensity of peaks having a diffraction angle 2θ in a range of 32.5° or more and 34.5° or less satisfies 0.5 or less.

A uranium-based phosphor selected from (i) phosphors having formula I or II:where the phosphor having formula I or II is doped with an activator ion including Pr3+, Sm3+, or mixtures thereof, where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25, 2.5≤p≤3.5, 1.75≤q≤2.25, and 3.5≤r≤4.5; (ii) a phosphor having formula I or II, where the phosphor having formula I or II is doped with an activator ion selected from Eu3+, Pr3+, Sm3+, and mixtures thereof; and a counter ion comprising one or more alkali metal ions; and (iii) phosphors having formula IIIwhere the phosphors having formula III are doped with an activator ion selected from: Eu3+, Pr3+, Sm3+, and mixtures thereof, where A is Li, Na, K, Rb, Cs, or a combination thereof.

A phosphor plate including: a complex containing an α-sialon phosphor and a sintered body containing spinel represented by a general formula M2xAl4-4xO6-4x (where M represents at least one of Mg, Mn, and Zn, and 0.2<x<0.6). In addition, there is provided a light emitting device including: a group III nitride semiconductor light emitting element; and the phosphor plate provided on one surface of the group III nitride semiconductor light emitting element. Further, there is provided a method for manufacturing the phosphor plate.

A cathode-ray tube ultraviolet light source includes a metal housing provided with a light-transmissive window, a heatsink disposed within the metal housing, a phosphor having a first surface and an opposing second surface, wherein the second surface of the phosphor is in thermal contact with the heatsink, and an electron gun capable of developing an electron beam to impinge upon the first surface of the phosphor, whereby light emitted from the second surface of the phosphor is directed through the light-transmissive window.

To provide a photodetector capable of protecting a semiconductor photodetector element from reflected electrons generated inside a vacuum enclosure.SOLUTION: A photodetector 1 includes a vacuum housing 2 having a window 12, a photocathode (first photoelectric conversion layer) 3 that emits electrons E in response to incidence of light L1, a phosphor layer (second photoelectric conversion layer) 4 that generates light L2 in response to incidence of the electrons E emitted from the photocathode 3, and a semiconductor photodetector element 5 that is disposed on the opposite side of the photocathode 3 with the phosphor layer 4 in between and detects the light L2 generated in the phosphor layer 4. The semiconductor photodetector element 5 is disposed at a distance from the phosphor layer 4.SELECTED DRAWING: Figure 1

To provide an indwelling clip that allows easy visual recognition of light emission of a fluorescent body from the outside of a luminal organ and that enables excellent mounting stability to the interior wall of the luminal organ.SOLUTION: An indwelling clip 1 has: a pair of arm plate parts 22 that are made of metal plates and opened elastically into a substantial V-shape; and claw parts 23 that are formed at the respective front ends of the arm plate parts 22. The arm plate parts are each provided, at least on an outer surface, with a fluorescent body that includes a fluorescent pigment emitting red or near infrared light by application of excitation light, the fluorescent body being an extrusion molding or an injection molding of a polymeric material composition containing the fluorescent pigment.SELECTED DRAWING: Figure 1

A vehicle lighting equipment that irradiates light around a vehicle includes: a first light source, a first scanning mirror, and a first lens disposed on an upper side relative to a second light source, a second scanning mirror, and a second lens, in a vertical direction of the vehicle, and a phosphor plate including a first region on an upper side and a second region on a lower side in the vertical direction, where a first laser light passing through the first scanning mirror and the first lens is irradiated onto the second region of the phosphor plate, and a second laser light passing through the second scanning mirror and the second lens is irradiated onto the first region of the phosphor plate, and where a light generated from the phosphor plate is projected by a projection lens.

To provide a light-emitting device that emits amber-colored light and has good temperature characteristics. The light-emitting device includes a light-emitting element having a light emission peak wavelength in a range from 380 nm to 470 nm, and a wavelength conversion member including phosphors that absorb at least a part of light from the light-emitting element and emit light. The phosphors include a first phosphor having a light emission peak wavelength in a range from 535 nm to 560 nm, having a half-value width in a range from 100 nm to 120 nm, and containing a nitride containing La, Ce, and Si, and a second phosphor having a light emission peak wavelength in a range from 605 nm to less than 620 nm, having a half-value width in a range from 70 nm to 80 nm, and containing a nitride containing at least one of Ca or Sr, and Eu, Si and Al. The light-emitting device emits light within a region defined by connecting (0.545, 0.425), (0.560, 0.440), (0.609, 0.390), and (0.597, 0.390) in an xy chromaticity coordinate system of a CIE1931 chromaticity diagram.

To provide a light-emitting device having a high luminance region and a low luminance region into a light-emitting surface.SOLUTION: A light-emitting device includes a plate-like translucent member having a light-emitting element, a lower surface which is disposed on the light-emitting element and light emitted from the light-emitting element enters, and an upper surface on the side opposite to the lower surface, where the upper surface of the translucent member is a light-emitting surface. The translucent member includes: a first translucent part that contains a first sinter body containing a phosphor particle; and a second translucent part that contains a second sinter body containing a light diffusion particle. A relative density of the second sinter body is 70% or more and 95% or less. The light-emitting surface includes: (i) a first light-emitting region where the light is emitted via the first translucent part; and (ii) a second light-emitting region where the light is emitted via the second translucent part, and which has luminance lower than that of the first light-emitting region.SELECTED DRAWING: Figure 3

An alpha-sialon phosphor which is represented by general formula (Cax, Euy) (Si12-(m + n) Alm + n) (OnN16-n), and which has an average linear expansion coefficient (alpha ') at 25-900 DEG C of 4.2-4.6 ppm / DEG C (inclusive). In the general formula, 0 < x < 2.0, 0 < y < = 0.5, 0.3 < = x + y < = 2.0, 0 < m < = 4.0, and 0 < n < = 3.0.

This specification discloses a converter element and light emitting devices including the converter element. The converter element is monolithic with at least two layers, where one layer is more porous than the other layer. The converter element may be integrated with a reflector layer, such as by metallization. The layer of the converter structure that is denser and having a smoother surface may be the one that is metallized, while the more porous layer is closer to the laser. The porosity enhances light extraction while the smoother surface decreases a loss of reflectivity at the reflector-phosphor interface. The converter element may be used in a laser based light emitting device.

A dual-band phosphor-converted light emitting diode (PC-LED) is provided. The dual-band PC-LED includes a blue LED configured to generate blue light, a first phosphor-based light filter configured to output visible light based on the blue light; and a second phosphor-based light filter configured to output near-infrared light based on the visible light.

A LED filament (2,20) configured to provide LED filament light. The LED filament comprising an elongated carrier (7) extending in a lengthwise direction, said elongated carrier comprising a first major surface (7a). The LED filament further comprises a plurality of LEDs (8) arranged on said first major surface and configured to emit LED light, a first layer (9) free from a luminescent material encapsulating or covering said plurality of LEDs and at least partly encapsulating or covering said first major surface, said first elongated translucent layer having a width, W1, transverse to said lengthwise direction, and a second layer (10) comprising a luminescent material configured to partly convert said LED light, the second layer is arranged on an outer surface (9a) of said first layer, such that the second layer is contained within the width, W1, of the first layer.

The invention relates to a stimulus-response lasting phosphorescent material based on carboxymethyl chitosan and a preparation method and application thereof, the preparation method comprises the following steps: preparing a mixed solution: mixing purified carboxymethyl chitosan with pyrene-2, 7-dicarboxylic acid mother liquor dissolved by sodium hydroxide, and introducing acid to adjust the pH value to obtain the mixed solution; and preparing an afterglow film material: pouring the obtained mixed solution into a mold, and drying to obtain the stimulus-response-lasting phosphorescent material based on carboxymethyl chitosan. Compared with the prior art, the material disclosed by the invention is diversified in response dimension, wide in color change range, stable in luminescent property at normal temperature, free of inert gas or vacuum protection in a use process, good in actual operability and reusability, and suitable for customized development of personalized anti-counterfeiting ink; the material can also be used as a functional additive to be doped in hydrophilic macromolecules, and is used for intelligent information labels, wearable display fabrics, noctilucent art materials, flexible encryption coatings and other emerging application scenes.

An optical device includes a light-emitting element and an optical combiner. The light-emitting element is configured to emit a type of invisible light. The optical combiner is disposed in an optical path of the type of invisible light. The optical combiner includes a light-transmitting substrate and a series of phosphors. The series of phosphors are disposed on the light-transmitting substrate and are configured to be excited by the type of invisible light to emit a type of visible light.

Green-emitting phosphors are useful in devices including an LED light source radiationally coupled and / or optically coupled to the phosphors, which are selected from[Ba1-a-bSraCab]x[Mg,Zn]y(UO2)z[P,V]O4)2(x+y+z) / 3,where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25; and[Ba,Sr,Ca,Mg,Zn]p(UO2)q[P,V]rO(2p+2q+5r) / 2,where 2.5≤p≤3.5, 1.75≤q≤2.25, 3.5≤r≤4.5.

The invention relates to the field of semiconductors, in particular to a preparation method and a value fixing method of a wafer dielectric film doping concentration standard sample wafer. Comprising the following steps: S1, preparing two silicon substrates, and performing a deposition step through PECVD (Plasma Enhanced Chemical Vapor Deposition) so as to deposit buffer layers on the silicon substrates; s2, executing a deposition step on one silicon substrate through PECVD (Plasma Enhanced Chemical Vapor Deposition) so as to deposit the dielectric film layer on the buffer layer; according to the preparation method, impurities such as boron and phosphorus in the standard sample can be effectively prevented from reacting with internal or external moisture, and the problem that the impurity concentration changes along with time is solved, so that the stability is kept; the defects related to phosphorus and boron in the dielectric film during annealing and the phenomenon that the dopant diffuses towards the silicon substrate and the outside can be effectively improved; according to the valuing method disclosed by the invention, precise valuing of the contents of the dopants B and P of the dielectric film layer can be realized through ICP / MS based on the developed standard sample wafer and the auxiliary sample wafer.

The present invention relates to a phosphor plate, characterized in that it comprises a fired body containing (Y 1‑x‑y , Gd x , Ce y )3Al5O 12 particles and Al2O3 particles, where x and y satisfy 0.07 ≤ x ≤ 0.11 and 0.010 ≤ y ≤ 0.015 respectively. In the above-mentioned fired body, the average particle size of the (Y 1‑x‑y , Gd x , Ce y )3Al5O 12 particles is 4 μm or more and 6 μm or less. With respect to the total amount of 100 vol% of the (Y 1‑x‑y , Gd x , Ce y )3Al5O 12 particles and Al2O3 particles, the concentration of the (Y 1‑x‑y , Gd x , Ce y )3Al5O 12 particles is 20 vol% or more and 30 vol% or less. The ratio of the average particle size of the above-mentioned Al2O3 particles to the average particle size of the (Y 1‑x‑y , Gd x , Ce y )3Al5O 12 particles (Al2O3 / (Y 1‑x‑y , Gd x , Ce y )3Al5O 12 ) is 1 or more and 2 or less. The overall thickness of the above-mentioned fired body is 150 μm or more and 250 μm or less.

A phosphor illumination system including a housing, a phosphor wheel, a condenser lens mounted to the housing, the condenser lens configured to condense light to an irradiation spot on the phosphor wheel and a flexure plate onto which the phosphor wheel is mounted. The flexure plate includes a fixed fastener for fixedly fastening the flexure plate to a first location of the housing and an adjustable fastener for adjustably fastening the flexure plate to a second location of the housing, the adjustable fastener configured to change at least one of a distance and an angle of the flexure plate with respect to the condenser lens as the adjustable fastener is tightened to or loosened from the housing.

Provided is a phosphor powder in which the balance of suitability, brightness, and excitation light blocking properties of a complex obtained from the phosphor powder with respect to a small-sized light-emitting device is improved. A phosphor powder containing SCASN phosphor particles, the phosphor powder having a volume-based median diameter (D50) of 0.1 [mu] m to 5.0 [mu] m (inclusive) as determined by a laser diffraction scattering method, and a peak wavelength of a fluorescence spectrum measured by a spectrophotometer when the phosphor powder is irradiated with light having a wavelength of 455 nm of 590.0 nm to 630.0 nm (inclusive), the absorption rate when the phosphor powder is irradiated with light having a wavelength of 455 nm is 80.0% or more.

This invention provides a hybrid ultraviolet and visible light source and its fabrication method. The method includes the following steps: providing a substrate, the substrate including a first region and a second region, the second region surrounding the first region; using a first mask to block the second region, and forming a first ohmic layer and a first N-type layer in the first region; using third, fourth, and fifth masks to form first, second, and third monochromatic light-emitting quantum well layers on the surface of the first N-type layer, respectively; using a second mask to form a first P-type layer, forming a white light source stacked structure; using a sixth mask to block the first region and forming an ultraviolet light source stacked structure in the second region; and simultaneously forming electrodes in both the white light source region and the ultraviolet light source region. The white light source for illumination proposed in the above technical solution does not contain phosphors or light-emitting quantum dots, and can extend its lifespan and reduce energy consumption when used in conjunction with an ultraviolet light source.

A phosphor wheel (1B) that is transmissive includes: a fluorescent substrate (10B) that consists essentially of a fluorescent material, the fluorescent substrate (10B) being annular ring-shaped; a metal member (20B) that is in contact with and holds the fluorescent substrate (10B); and a rotator that rotates the fluorescent substrate (10B) and the metal member (20B) about an axis extending in a thickness direction of the fluorescent substrate (10B). In the phosphor wheel, in a plan view of the fluorescent substrate (10B), the fluorescent substrate (10B) includes a region that does not overlap the metal member (20B), the region being annular ring-shaped, the metal member (20B) includes: a first heat dissipation member (23B) located to face a principal surface of the fluorescent substrate (10B); and a second heat dissipation member (24B) located to oppose the first heat dissipation member (23B) across the fluorescent substrate (10B), the first heat dissipation member (23B) and the second heat dissipation member (24B) hold the fluorescent substrate (10B) by sandwiching the fluorescent substrate (10B) therebetween, and one of the first heat dissipation member (23B) or the second heat dissipation member (24B) includes a plurality of radiator fins (202).

Phosphor (1) with the general formula EA2A x (DW y G 1-y ) 10 O 13 : RE, where - EA is selected from the following group: Ca, Sr, Ba, Zn, Mg and combinations of these elements, - A and G are selected from the following group: Li, Na, K and combinations of these elements, - DW Al is, - RE is one or more activator elements, 0 ≤ x ≤ 6 , 0.3 ≤ y ≤ 0 .6 and x + 20 y = 12 ε , where ε = 0.9 − 1.1 .

The present invention relates to the field of optical material technology, and discloses a flexible organic room temperature phosphorescent material, its preparation method, and application. The preparation method comprises the following steps: dissolving a terpyridine phosphor and a polymer in water to obtain a precursor solution, annealing the precursor solution, and volatilizing the precursor solution to form a film to obtain the flexible organic room temperature phosphorescent material; the present invention uses a terpyridine compound as a phosphor and physically doping it into a polymer matrix to prepare an ultra-long organic room temperature phosphorescent material; and by regulating the doping concentration and type of phosphorescent molecules, the afterglow life and color can be regulated. The required raw materials are inexpensive and readily available, and the prepared material has the advantages of good flexibility, high transparency, and a long phosphorescence life, and has broad application prospects in the fields of afterglow display, information encryption, and anti-counterfeiting.

This invention provides a medical marker that offers excellent mounting stability, improved retention period, and superior visibility from the outside of tubular organs. [Solution] The medical marker 100 according to the present invention is a medical marker 100 that is implanted in a tubular organ in the body, and comprises a main body portion 120 extending in the longitudinal direction L, and two or more locking portions 150 that extend from a proximal end portion 151 fixed to a part of the distal side of the main body portion 120 to a tip portion 154. The locking portions 150 are configured to be deformable into a curved state in which they are curved laterally from the proximal end portion 151 so that the tip portion 154 is positioned proximal to the proximal end portion 151, and an extended state in which they extend in the longitudinal direction L from the proximal end portion 151. The main body portion 120 or the locking portions 150 are arranged with a phosphor containing a fluorescent dye that emits fluorescence in a predetermined wavelength range when irradiated with excitation light.

Disclosed herein is a methodology which quickly provides for the analysis of multiple luminescence decays from individual phosphor samples. The disclosed method utilizes a Trust-Region method to provide non-physical solutions when the fitting application was not provided with bounds for the respective intensities and decay times. Results from Double Decay were found to be statistically similar to data analyzed in methodologies known in the art.

A method of treating a subsurface formation with a coated proppant includes introducing the first hydraulic fracturing composition into a wellbore and the subsurface formation through a first zone of the plurality of zones of the subsurface formation; propagating at least one subsurface fracture in the first zone with the first hydraulic fracturing composition, and wherein the hydraulic fracturing composition includes a fluid medium and a first coated proppant dispersed within the fluid medium, the first coated proppant including: a particulate substrate; a first polymeric layer surrounding the particulate substrate, the first polymeric layer including a first chemical additive; and a second polymeric layer surrounding the first polymeric layer, the second polymeric layer including a first chemical tracer, the first chemical tracer including barcoded degradable polymers, fluorescent dyes, quantum dot nanoparticles, paramagnetic nanoparticles, up-conversion phosphors, long-persistent phosphors, or time-resolved fluorescence resonance energy transfer polymer-nanoparticles (TR-FRET).

A cathode-ray tube ultraviolet light source includes a metal housing provided with a light-transmissive window, a heatsink disposed within the metal housing, a phosphor having a first surface and an opposing second surface, wherein the second surface of the phosphor is in thermal contact with the heatsink, and an electron gun capable of developing an electron beam to impinge upon the first surface of the phosphor, whereby light emitted from the second surface of the phosphor is directed through the light-transmissive window.