304 results about "Long wavelength" patented technology

The invention provides a transcendental extreme ultraviolet light source device which comprises a free electron laser main body which comprises an undulator system and an optical resonant cavity. The undulator system comprises a modulation section undulator and a radiation section undulator; the optical resonant cavity comprises resonant cavity reflectors and a dispersion section, and the modulation section undulator, the dispersion section undulator and the radiation section undulator are sequentially arranged in the direction of an electron beam and are all located between the resonant cavity reflectors; the resonant wavelength output by the radiation section undulator is 1 / h of the resonant wavelength of the modulation section undulator, h is the harmonic number, and when the resonant wavelength output by the radiation section undulator is 6-7nm, the radiation wavelength reflected by the resonant cavity is h times of the resonant wavelength output by the radiation section undulator, so that the resonant cavity is prevented from adopting a reflector with the reflection wavelength of 6-7nm. According to the device, the radiation of the target wavelength is output by using harmonic waves, and a reflector with relatively long wavelength and mature technology can be directly used; various accelerators are compatible, the energy efficiency of the accelerators is greatly improved, and power consumption is reduced.

A line narrowing gas laser device includes an actuator changing a center wavelength of pulse laser light, and a processor controlling the actuator. The processor reads parameters including a number of irradiation pulses of pulse laser light to be radiated to one location of an irradiation receiving object, a shortest wavelength, and a longest wavelength; sets a first pattern with which the center wavelength is changed to approach the longest wavelength from the shortest wavelength and a second pattern with which the center wavelength is changed to approach the shortest wavelength from the longest wavelength such that at least one of the first pattern and the second pattern when the number of irradiation pulses is an even number is different from corresponding one when the number of irradiation pulses is an odd number; and controls the actuator so that the first pattern and the second pattern are alternately performed.

An LED includes first / second doped layers with active region(s) therebetween emitting a first wavelength. A wavelength converter on a first LED surface absorbs the first wavelength and emits a second, longer wavelength. A second LED surface is against a substrate surface. A first electrical contact on the first LED surface extends along LED sidewalls, separated from the active region(s) and second doped layer by an insulating layer, connecting the first doped layer to a first contact pad. In some instances, contact pads are on the substrate surface; a second electrical contact extends onto LED sidewalls, connecting the second doped layer to a second contact pad. In some other instances contact pads are on laterally-extending portions of the second doped layer. The insulating layer separates the first contact pad from the second doped layer; a second contact pad is in direct electrical contact with the second doped layer.

An organometallic complex having an emission peak in a long wavelength region (a visible region having a wavelength of 700 nm or greater or a near-infrared region) is provided. The organometallic complex has a structure represented by General Formula (G1), in which a ligand having a quinoxaline skeleton is coordinated to a central metal, and an electron-withdrawing group (e.g., fluorine, a cyano group, a trifluoromethyl group, a trifluoromethylsulfonyl group, or a pentafluorosulfanyl group) is included as a substituent at at least one substitutable position of the benzene ring of the quinoxaline skeleton of the ligand.

Provided is a light-emitting element which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes. A combination of the first organic compound and the second organic compound forms an exciplex (excited complex). An emission spectrum of the exciplex overlaps with an absorption band located on the longest wavelength side of an absorption spectrum of the phosphorescent compound. A peak wavelength of the emission spectrum of the exciplex is longer than or equal to a peak wavelength of the absorption band located on the longest wavelength side of the absorp-tion spectrum of the phosphorescent compound.

A distributed feedback plus reflection (DFB+R) laser includes an active section, a passive section, a low reflection (LR) mirror, and an etalon. The active section includes a distributed feedback (DFB) grating and is configured to operate in a lasing mode. The passive section is coupled end to end with the active section. The LR mirror is formed on or in the passive section. The etalon includes a portion of the DFB grating, the passive section, and the LR mirror. The lasing mode of the active section is aligned to a long wavelength edge of a reflection peak of the etalon.

An LED includes first / second doped layers with active region(s) therebetween emitting a first wavelength, and is arranged in a vertical die geometry with a reflective first electrical contact on a first LED surface. A wavelength converter absorbs the first wavelength and emits a second, longer wavelength. Some examples include a transparent second electrical contact on a second LED surface or angled LED sidewalls, and the wavelength converter is on the LED surface and the angled LED sidewalls. Some other examples include a second electrode on LED side surfaces extending beyond a second LED surface to form a cavity, with the wavelength converter on the second LED surface at least partly filling the cavity.

Nanofibrous materials and their fabrication by electrospinning are disclosed for passive temperature control on earth and in outer space. The materials combine high solar reflectivity with high thermal emittance in the infrared region, including in the long wavelength atmospheric window region between 8 μm and 13 μm. The materials include nanofibrous PTFE / PEO and silica materials. The physical properties of the materials are suitable for extraterrestrial as well as terrestrial applications.

Light-emitting device assembly (100; 102) comprising: a substrate (120; 220); a plurality of light-emitting device chips (110; 210) arranged linearly and spatially separated from one another on the substrate (120; 220); and a plurality of wavelength conversion units (130; 230) on surfaces of the plurality of light-emitting device chips (110; 210), wherein the plurality of wavelength conversion units (130; 230) each have regions extending over regions between the plurality of light-emitting device chips (110; 210), wherein each of the plurality of wavelength conversion units (110; 210) has: a longer side extending in a first direction in which the light-emitting device chips (110; 210) are arranged;and a shorter side that is shorter than the longer side, wherein shorter sides of wavelength conversion units adjacent in the first direction of the plurality of wavelength conversion units (110; 210) are spaced apart from each other, wherein side faces of the shorter sides are exposed, wherein each of the plurality of wavelength conversion units (130; 230) has several phosphor layers (131, 132, 133; 134, 135; 231, 232, 233; 234, 235), and wherein the phosphor layers (131, 132, 133; 134, 135; 231, 232, 233; 234, 235) are stacked sequentially according to the lengths of wavelengths such that a light-emitting phosphor layer with a shorter wavelength is located at one bottom and a Light-emitting phosphor layers with a longer wavelength are arranged on a surface.

Disclosed is a pulsed laser apparatus and method of generating a laser pulse. The apparatus includes an input coupler configured to receive pumping light from a pumping light source and a seed pulse from a seed pulse generator. The apparatus further includes a doped fiber-optic cable with an input port at a first end configured to receive the pumping light and the seed pulse. The doped fiber-optic cable amplifies the seed pulse to generate an output pulse. Along a first length of the doped fiber optic cable, the pulse spectrum broadens rapidly owing to nonlinearity. Beyond the first length in an extended portion, the output pulse shifts towards longer wavelengths and broadens in both spectral and temporal domains. The apparatus also includes an output port at a second end of the doped fiber-optic cable, wherein the output pulse exits the doped fiber-optic cable at the output port.

To allow a wavelength variable light source and a wavelength variable method that can tune the wavelength of the output light to reliably amplify the light over a wide wavelength range.SOLUTION: A wavelength variable light source 1 includes an optical output unit that outputs ultrashort pulsed light L and can variably change the wavelength of the output ultrashort pulsed light L, a second fiber amplifier 7 that amplifies the ultrashort pulsed light L output from the optical output unit, a filter 8 that filters the ultrashort pulsed light L amplified by the second fiber amplifier 7, and a third fiber amplifier 9 that amplifies the ultrashort pulsed light L filtered by the filter 8. The second fiber amplifier 7 has a higher gain on the short wavelength side than on the long wavelength side. The third fiber amplifier 9 has a higher gain on the long wavelength side than on the short wavelength side. The filter 8 attenuates the amplified spontaneous emission light.SELECTED DRAWING: Figure 1

The utility model discloses an OWS earphone with excellent bass performance. The OWS earphone comprises an earphone shell, a loudspeaker module, an FPC and a bass board. The loudspeaker module is arranged in the loudspeaker cavity. The bass board is arranged in the loudspeaker cavity, the edge of the bass board is in close contact with the step, the bass board, the step and the end face of the loudspeaker cavity jointly define the bass channel, the input end of the bass channel is matched to be communicated with the loudspeaker cavity, and the output end of the bass channel is communicated with the sound outlet. According to the loudspeaker, the low-frequency component is directly emitted through the bass channel, resonance is not generated, frequency resonance can be generated in a particularly low frequency band such as 100-300 Hz, the bass enhancement effect is achieved, and the purpose of attenuating the high frequency with the short wavelength is achieved through the low-frequency component with the long wavelength without influencing the low-frequency component with the long wavelength, so that the low-frequency component with the long wavelength can be directly emitted through the low-frequency channel, and the low-frequency component with the long wavelength can be directly emitted through the low-frequency channel without generating resonance. Meanwhile, the bass board occupies a very small space and is suitable for the OWS earphone.

The application provides a chemical luminescence substrate with high chemical luminescence intensity, long wavelength and good stability, and a preparation method and application thereof. The chemical luminescence substrate has a structure shown in formula I. In addition, the application provides spontaneous fluorescence wavelength and intensity of the chemical luminescence probe in a physiological environment, and application of the chemical luminescence probe in in-vivo imaging. Test results show that the chemical luminescence probe provided in the application has long-wavelength spontaneous fluorescence (600 nm), can effectively penetrate skin tissue, has high spontaneous fluorescence intensity (> 10 7 p / s / cm 2 / sr), excellent thermal stability (without 1,2-dioxetane structure) and diversified detection groups (suitable for different detection models).

A method is provided for statics correction of seismic data comprising a plurality of traces representing signals recorded by each of a plurality of seismic receivers disposed proximate to an area of Earth's subsurface to be evaluated. The signals are in response to one or more actuations of one or more seismic energy sources. The method includes identifying arrival times of refraction events in each of the plurality of traces. Long wavelength statics components and short wavelength statics components are separated from the arrival times. The separated long wavelength statics components are used as input to a refraction analysis to generate a velocity model of Earth's subsurface.

This invention discloses a method for constructing low-frequency models based on a spatiotemporally gated recurrent unit fusion network, relating to the field of petroleum geophysical exploration. This invention proposes a low-frequency model prediction neural network framework for small sample data. This framework uses GRU as the basic unit to fully consider the long-term dependencies of the low-frequency model's time series, ensuring the integrity of long-wavelength information in the constructed low-frequency model. To improve the horizontal continuity of the low-frequency model, a spatiotemporal feature fusion module is designed to transform multichannel data into potential vectors containing spatial information. Simultaneously, envelope information and the initial model serve as prior information to guide the neural network, helping the network generate stable low-frequency model predictions and reduce prediction nonlinearity, further enhancing the network's generalization ability. It also generates spatial perturbations on the original data to produce label data with richer vertical combinations and more diverse types.

Optical element for a radiation imaging device, comprising: a scintillator which receives radiation (100) to emit fluorescence light with a longer wavelength than the radiation (100) and which is uniformly formed on a radiation-incident substrate surface of a lens-shaped substrate (14) provided in an objective lens (10), wherein the scintillator is made of: a base material which is a solid optical material from which the lens-shaped substrate (14) is formed, and of a predetermined additive.

The purpose of the present invention is to provide a peripheral sealant for a display element, the peripheral sealant making it possible to achieve a display element that has excellent impact resistance while having excellent curability with respect to long-wavelength light and excellent adhesion with respect to a metal. The present invention provides a peripheral sealant for a display element, the peripheral sealant containing a curable resin and a photopolymerization initiator. The curable resin contains a monofunctional polymerizable compound that has one polymerizable functional group in each molecule, and a polyfunctional polymerizable compound that has two or more polymerizable functional groups in each molecule, wherein the monofunctional polymerizable compound includes: a monofunctional polymerizable compound A which does not have a hydroxyl group, a carboxyl group, or a phosphate group, while having one polymerizable functional group and at least one structure that is selected from the group consisting of a phenyl group, an imide bond, and an alicyclic hydrocarbon skeleton in each molecule; and a monofunctional polymerizable compound B which has one polymerizable functional group and at least one structure that is selected from the group consisting of a hydroxyl group, a carboxy group, and a phosphate group in each molecule. The photopolymerization initiator includes a photopolymerization initiator that has an absorption coefficient of 75 mL / g∙cm or more at a wavelength of 450 nm.

The embodiment of the specification relates to the technical field of super-resolution fluorescence microscopy, and particularly relates to an optical superlens optical sheet endoscopy imaging system and method. Phase control is performed on short-wavelength laser by an optical sheet superlens, so that incident light on a sample is finely adjusted into the form of an optical sheet, the short-wavelength laser after phase control is irradiated on the sample, the optical sheet and the sample interact to excite fluorescence, at the same time, phase control is performed on long-wavelength laser by an OAM light superlens, the obtained OAM light is irradiated on the sample, the OAM light quenches fluorescent substances at a specified position in a fluorescent spot excited by the short-wavelength laser, so that the diffraction area of the fluorescent spot is reduced, finally, fluorescence remaining after OAM light irradiation of the sample is converged on a photodiode for fluorescence power detection, and the resolution of imaging is improved on the basis of scanning of samples such as living cells.

To provide a connection method of a metal member capable of suppressing formation of voids even when joining by laser irradiation is performed in a short time.SOLUTION: A metal member connection method for connecting a first metal member and a second metal member by laser joining by irradiating a laser beam in a state in which the first metal member and the second metal member are overlapped, the method comprising: Using a first laser beam and a second laser beam having a longer wavelength than the first laser beam as the laser beam, setting laser irradiation by the second laser beam to a high output in a first irradiation period after an output of the second laser beam reaches a predetermined output, and reducing the output from the high output to a low output in a transition period following the first irradiation period; Performing the laser irradiation with the first laser light at the low output in a second irradiation period subsequent to the transition period, and performing the laser irradiation with the first laser light at a constant output in the first irradiation period, the transition period, and the second irradiation period.SELECTED DRAWING: Figure 1

The invention relates to a high-energy radiation detection device which comprises a scintillator layer, a light color conversion layer and a light detection module, and the light color conversion layer is located between the scintillator layer and the light detection module. The scintillator layer is used for receiving high-energy radiation and generating scintillation light. The color conversion layer is used for receiving the scintillation light and generating conversion light, and the wavelength of the conversion light is larger than that of the scintillation light. The light detection module is used for receiving the conversion light and converting the conversion light into an electric signal. According to the high-energy radiation detection device disclosed by the invention, high-energy radiation is converted into conversion light with relatively long wavelength in a two-stage manner, so that the conversion efficiency of the light detection module is improved.

A substrate is mounted on a chuck in a chamber of an EUV tool. An illumination aperture in the chamber provides a beam of light to illuminate the substrate on the chuck. The beam of light includes extreme ultraviolet (EUV) in-band (IB) light and out-of-band (OOB) light. The OOB light has longer wavelengths than the EUV IB light. A beam-narrowing aperture in the chamber, which is switchable into and out of a path for the beam of light, selectively narrows the beam of light to illuminate the substrate. A band-selection filter filters out the OOB light or the EUV IB light. Imaging optics in the chamber relay light from the substrate to an imaging plane. A grating spectrally disperses the light from the substrate. A sensor detects the light from the substrate as relayed by the imaging optics and spectrally dispersed by the grating.

To provide a compact excellent in weatherability.SOLUTION: A compact comprises a base material that is added with an ultraviolet light absorber indicating a long wavelength-side peak P1 at a wavelength longer than 280 nm in an absorption spectrum, and an ultraviolet cured material that contains a component derived from a photopolymerization initiator indicating a short wavelength-side peak P2 at a wavelength shorter than 280 nm in the absorption spectrum. In the absorption spectrum of the ultraviolet light absorber, the short wavelength-side wavelength F1 of the wavelengths indicating the half-width of the long wavelength-side peak P1, is closer to the long wavelength-side than the long wavelength-side wavelength F2 of the wavelengths indicating the half-width of the short wavelength-side peak P2 in the absorption spectrum of the photopolymerization initiator.SELECTED DRAWING: Figure 2

Group III-nitride heterostructures that include an In-containing group III-nitride alloy with a high crystal quality for use as buffer layers in light-emitting devices are provided. Also provided are light-emitting devices, such as light-emitting diodes and laser diodes, that incorporate the heterostructures and metal-organic chemical vapor deposition (MOCVD) methods for growing the heterostructures. The heterostructures include a substrate, a thin nucleation layer of an In-containing group III-nitride, a thin cap layer on the nucleation layer, and an In-containing group III-nitride alloy overlayer on the cap layer.

A plastic scintillation optical fiber capable of detecting a neutron beam and excellent in productivity. A plastic scintillation optical fiber of one embodiment of the present invention includes: an outermost peripheral layer (1) containing a plastic material containing an organic compound containing an element having a larger neutron reaction cross section than hydrogen and emitting scintillation light by irradiation of a neutron beam; a high-refractive-index core (2) provided inside the outermost peripheral layer (1) and containing at least one phosphor that absorbs scintillation light and wavelength-converts to a long wavelength; and a cladding layer (3) that covers the outer peripheral surface of the core (2) and has a lower refractive index than the core (2). A wavelength conversion optical fiber containing the core (2) and the cladding layer (3) is integrated with the outermost peripheral layer (1) that covers the outer peripheral surface of the wavelength conversion optical fiber.

Optical films and polarizing beam splitters including the optical films are described. In some cases, the optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack, each optical stack comprising a plurality of polymeric interference layers reflecting and transmitting light primarily by optical interference in a same predetermined wavelength range. Each optical stack has interference layers closer to the one or more spacer layers that reflect longer wavelengths and interference layers farther from the one or more spacer layers that reflect shorter wavelengths.

A vehicle window glass with which it is possible to realize a vehicle space that is favorable to the skin of the occupant is provided. In a vehicle window glass according to the present disclosure, an average transmittance A in a near-infrared wavelength band from 780 nm to 2,500 nm is 65% or less, a value B, which is a percentage (b1 / b2×100) of bl with respect to b2, is 50% or more, where b1 is an average transmittance in a visible-light long wavelength band of 650 nm to 750 nm, and b2 is an average transmittance in a visible-light total wavelength band of 380 nm to 780 nm, and the transmittance has a minimum value in the wavelength band of 500 nm to 600 nm.

A kind of photocatalytic material, its manufacturing method and application, the manufacturing method of photocatalytic material includes the following steps: 1) provide photocatalytic material precursor covered by liquid film, 2) to photocatalytic material precursor irradiation wavelength is 200nm below ray, obtain photocatalytic material.The photocatalytic material has the advantages such as simple manufacturing method and the response value of long wavelength light is significantly improved.

The invention discloses a solid electrolyte, a preparation method of the solid electrolyte, an electrochromic device and application of the electrochromic device. The solid electrolyte comprises a matrix, electrolyte salt and carbon quantum dots. The electrolyte salt is dispersed in the matrix. The carbon quantum dots are dispersed in the matrix, raw materials of the carbon quantum dots have carbon-carbon double bonds and nitrogen elements, chemical bonds and / or molecular chains exist between the carbon quantum dots and the matrix, and the fluorescence quantum yield is 30%-80%. According to the solid electrolyte disclosed by the invention, carbon-carbon double bonds of the carbon quantum dots can be cross-linked with a matrix in a curing process to form cross-linking sites, so that the mechanical property of the solid electrolyte is enhanced. Besides, the fluorescence quantum yield of the carbon quantum dots is relatively reasonable, so that the carbon quantum dots, as an ultraviolet absorbent, can convert most of energy of ultraviolet light into visible light with relatively long wavelength instead of heat energy, thereby improving the optical performance of the electrochromic device and reducing the mechanical property problem caused by thermal aging of the solid electrolyte.

The invention relates to the field of photocuring new material chemicals, in particular to composition of a novel photoinitiator mixture system, application of the novel photoinitiator mixture system as a photoinitiator in an ethylenically-bond-containing unsaturated radiation polymerization system and the ethylenically-bond-containing unsaturated radiation polymerization system containing the photoinitiator mixture component. The novel photoinitiator mixture system disclosed by the invention is widely suitable for emerging long-wavelength high-photosensitivity low-energy curing application scenes represented by high-end PCB (Printed Circuit Board) photoresist.

Light-emitting element comprising: a first electrode (103); a light-emitting layer (703) above the first electrode (103), wherein the light-emitting layer (703) comprises a guest material and a host material; and a second electrode (108) above the light-emitting layer (703), where a fluorescence spectrum of the host material and a phosphorescence spectrum of the host material overlap the absorption band on the longest wavelength side (the side of lowest energy) in the absorption spectrum of the guest material, wherein the difference between the energy value of the maximum of the fluorescence spectrum of the host material and the energy value of the maximum of the absorption band on the side of the lowest energy in the absorption spectrum of the guest material, wherein this maximum has an absorption wavelength corresponding to a direct transition from the singlet ground state to the lowest excited triplet state of the guest material, is 0.2 eV or less, wherein the host material is a mixture of a heterocyclic compound and an aromatic amine compound or carbazole compound, and where the level of a triplet excitation energy of the host material is higher than the level of a triplet excitation energy of the guest material.