297results about How to "Suppress emission" patented technology

An organic electroluminescent device including: an anode, a cathode, and at least an emitting layer, an electron-transporting layer and an electron-injecting layer interposed between the anode and the cathode; the emitting layer containing a host material which is a pyrene derivative, a chrysene derivative, a fluorene derivative or an anthracene derivative; the electron-transporting layer containing an electron-transporting material which is a pyrene derivative, a chrysene derivative, a fluorene derivative or an anthracene derivative, the anthracene derivative containing no heterocyclic ring, and has a heterocyclic ring and having a fluorescence quantum yield which is smaller than that of the host material contained in the emitting layer; and the electron-injecting layer containing a non-complex compound having a nitrogen-containing five-membered heterocyclic structure.

An NOx emission system for diesel powered vehicles has a “Y” exhaust system with an NOx adsorber catalyst in each leg and an oxidation catalyst in the combined leg. One bank of cylinders sends exhaust gases to one of the “Y” legs while a second bank of cylinders send exhaust gases to the other “Y” leg. Composition of the exhaust gases in each leg is independently controlled by the engine's ECU so that exhaust gases in one leg are rich for regenerating the NOx adsorber catalyst in that leg while exhaust gas composition in the other leg is lean so that the combined gas stream is always lean and reductant slip is oxidized in the oxidation catalyst.

Apparatus and method for amplifying laser signals using segments of fibers of differing core diameters and / or differing cladding diameters to suppress amplified spontaneous emission and non-linear effects such as four-wave mixing (FWM), self-phase modulation, and stimulated Brillouin and / or Raman scattering (SBS / SRS). In some embodiments, different core sizes have different sideband spacings (spacing between the desired signal and wavelength-shifted lobes). Changing core sizes and providing phase mismatches prevent buildup of non-linear effects. Some embodiments further include a bandpass filter to remove signal other than the desired signal wavelength and / or a time gate to remove signal at times other than during the desired signal pulse. Some embodiments include photonic-crystal structures to define the core for the signal and / or the inner cladding for the pump. Some embodiments include an inner glass cladding to confine the signal in the core and an outer glass cladding to confine pump light in the inner cladding.

A housing device, such as rear view mirror, with built-in camera can include an infrared projection device with an infrared light source for irradiating infrared light onto an image capture region for the camera. The camera can display a sensitivity to visible light and infrared light, and can be built into the mirror housing which is mounted to a vehicle and contains a mirror used for visual checking purposes. The infrared projection device can include a light transmission cover. The cover can be positioned in an infrared irradiation direction of the infrared light source, can be formed from a material that is impenetrable to visible light and transmits only infrared light, and can be attached to the mirror housing in an integral manner.

A thermally assisted magnetic head has a medium-facing surface facing a magnetic recording medium; a near-field light generator disposed on a light exit face in the medium-facing surface; a magnetic recording element located adjacent to the near-field light generator; and a light emitting element disposed so that emitted light thereof reaches the near-field light generator; the near-field light generator is comprised of a cusp portion and a base portion; when λin represents a wavelength of the emitted light from the light emitting element immediately before the emitted light reaches the near-field light generator, an intensity of near-field light generated when the material forming the cusp portion is irradiated with the light of the wavelength λin is stronger than an intensity of near-field light generated when the material forming the base portion is irradiated with the light of the wavelength λin.

An object of the present invention is to obtain an organic EL device having excellent light resistance and a method for manufacturing the same. An organic EL device comprises: a first substrate as a supporting substrate; a first electrode provided on the first substrate; an organic layer that is provided on the first electrode and includes at least an organic light-emitting layer; a second electrode provided on the organic layer; a resin layer provided to cover the first substrate and the second electrode thereon, the resin layer containing, at least in a region on the organic layer, an ultraviolet light absorber that absorbs ultraviolet light; and a second substrate arranged on the resin layer to block the organic layer from ambient air.

Cylindrically curved slopes successively inner-reflect illumination light which reaches a back face or emission face of a light guide plate via an upper edge of an incidence face. The curved slopes give the light diverse propagation directions after inner-reflection. This avoids the viewer from observing a strongly irradiated edge, thereby reducing reflective appearance. Inner-reflection by the curved slopes also gives diverse propagation directions to illumination light coming via other edges, thereby reducing reflective appearance. Curved surface profile is given to valleys involved in a great number of projection rows running in a direction approximately perpendicular to the incidence face, and may be further given to the projection rows. The valleys are provided with curved surface profile within a curved-surface-profile-giving-area around the incidence face or, in addition to this, around flank faces of the light guide plate. The curved surface profile varies gradually around a boundary of the curved-surface-profile-giving-area to avoid sudden profile changing which would bring undesirable effects.

LEDs 5 serving as light sources are arranged so as to face an incidence surface 4 of a light guide plate 3. Light emitted from the LEDs 5 is incident on the incidence surface 4 of the light guide plate 3 to enter the light guide plate 3 to be propagated through the light guide plate 3. When the angle of incidence of the light on an emission surface 6 of the light guide plate 3 is a critical angle or less while the light is propagated, the light leaves the emission surface 6. On at least one of the emission surface 6 of the light guide plate 6 and a surface 10 opposite to the emission surface 6 of the light guide plate 6, a large number of prism protrusions 12 extending in parallel to such a direction that a distance from the incidence surface 4 increases are formed along the incidence surface 4. A side-face side portion 10b of the prism protrusions 12 is formed so as to have a height gradually decreasing as a distance from the incidence surface 4 decreases. With this construction, even if the LEDs are used as light sources, abnormal emission can be suppressed in the vicinity of the incidence surface of the light guide plate, and the luminance of exiting light can be uniform.

A method and device for reducing Peak-to-Average Power Ratio (PAPR) of a transmitted signal in a wireless telecommunication system utilizing CFR technique, the method including performing peak-windowed clipping of a transmitted signal using at least two cascaded clipping stages and individually configuring parameters for each clipping stage before performing the peak-windowed clipping.

VCSEL diode comprises a bottom electrode (10), conducting substrate material (11), a bottom mirror (12) formed by a multilayer distributed Bragg reflector (DBR) of certain conductivity and reflectivity RA, and an active region (13) comprising a plurality of layers some of which are quantum wells. It also comprises a top mirror (14) formed by a multilayer distributed Bragg reflector (DBR) with reflectivity RB<RA and conductivity of a second type. There are a number of layers (15, 18) which through a process of selective oxidation (exposure to a high temperature wet atmosphere) may be selectively converted to oxide layers, therefore producing well defined internal oxide apertures within the top mirror. There is a high-conductivity semiconductor top contact layer (17), a top electrode layer (19) with a centrally located aperture from which light is emitted, and a trench (16) which defines a mesa type VCSEL. The VCSEL comprises at least one oxide suppression layer in the top mirror whose function it is to suppress high order transverse optical modes.

A control apparatus for an internal combustion engine having two cylinder groups and two variable valve control mechanisms provided to the respective cylinder groups, includes a detecting section that detects an incylinder pressure of each cylinder, a comparing section that makes a comparison between the two cylinder groups with respect to a combustion stability and a control section that varies valve lift characteristics of intake valves of one cylinder group which is larger in the average incylinder pressure than the other cylinder group in accordance with a result of comparison by the comparing section so as to make intake air quantities for the respective cylinder groups be equal to each other.

There are provided a fuel addition means which adds fuel into the exhaust, a NOx storage reduction catalyst by which NOx which has been stored is reduced by fuel which is added by the fuel addition means, and a control means which, based upon the intake air amount of the internal combustion engine, the fuel supply amount to the internal combustion engine, the target air / fuel ratio during NOx reduction, and the rich continuation period over which this target air / fuel ratio should be continued, calculates an added fuel amount to be added during this rich continuation period, and controls the fuel addition means so that fuel is added by dispersing this calculated added fuel amount over this rich continuation period.

A fuel cell system is provided, the system comprising: a fuel cell (1) configured to generate electric power by use of a fuel gas; a reformer (2) configured to generate the fuel gas by reforming a raw material; a combustion burner (2a) configured to supply heat for reforming; a raw material feeder (10) configured to control the feed rate of combustion fuel to the combustion burner; a combustion fan (2b) configured to supply air to the combustion burner; a fuel gas passage (R1, R4); an off gas passage (R3, R5); a bypass passage (R2); a switching valve (8); and a controller (101), wherein the inside of the fuel cell is filled with the raw material before the fuel gas is supplied, and wherein the controller controls the raw material feeder so as to reduce the feed rate of the combustion fuel to the combustion burner when controlling the switching valve so as to shut off the bypass passage to supply the fuel gas generated in the reformer to the fuel cell. This fuel cell system is environmentally-friendly and capable of suppressing the emission of carbon monoxide at the start of a power generating operation to mitigate the adverse effect upon the ecosystem.

An organic electroluminescence device comprising an anode layer, a cathode layer, a light-emitting layer present between the anode layer and the cathode layer, and a hole transporting thin film layer present between the light-emitting layer and the anode layer, wherein the hole transporting thin film layer in contact with the anode layer, contains at least 5 mass % of a polymer compound, and the value of the lowest unoccupied molecular orbit of the thin film layer is at least 2.1 eV.

An improved thermionic cathode is provided. The cathode has a carbon-coated cone surface and reduced cone angle (e.g. typically 60 degrees or less) that delivers an electron beam with high angular intensity and brightness and exhibits increased longevity.

.[.Herein disclosed are a liquid crystal display device and a data processing device, which can have their frame portions reduced in area to reduce the size and weight by extracting the terminals of video signals to only one side of a liquid crystal display panel and by arranging a video signal line driving circuit substrate to be connected with the terminals, only at one side of the display panel..]. .Iadd.A liquid crystal display includes upper and lower casings for holding a liquid crystal display panel and substrates. The casings are provided with at least one of fixing pawls and recesses for receiving the fixing pawls so as to enable the connection of the casings. .Iaddend.

An object of the present invention is to provide a gas turbine combustor that supports hydrogen-containing gas having a high burning velocity and is capable of performing low NOx combustion without reducing reliability of a burner. A first fuel nozzle is provided upstream of a combustion chamber and supplies fuel for activation and hydrogen-containing gas. The combustor has a primary combustion zone, a reduction zone and a secondary combustion zone. In the primary combustion zone, the fuel supplied from the first fuel nozzle is combusted under a fuel rich condition to form a burned gas containing a low concentration of oxygen. In the reduction zone, a hydrogen-containing gas is injected into the combustion chamber through a second fuel injection hole from a second fuel nozzle so that NOx generated in the primary combustion zone is reduced by an oxygen reaction of the hydrogen. In the secondary combustion zone, air for lean combustion is supplied into the combustion chamber so that unburned part of fuel is combusted under a fuel lean condition.

A new monolithic resonator metasurface design achieves ultra-high Q-factors while using only one resonator per unit cell. The metasurface relies on breaking the symmetry of otherwise highly symmetric resonators to induce intra-resonator mixing of bright and dark modes (rather than inter-resonator couplings), and is scalable from the near-infrared to radio frequencies and can be easily implemented in dielectric materials. The resulting high-quality-factor Fano metasurface can be used in many sensing, spectral filtering, and modulation applications.

A catalyst for removing hydrocarbons from exhaust gas containing methane and an excess of oxygen, which comprises palladium or palladium / platinum supported on at least one carrier selected from zirconia, sulfated zirconia and tungsten-zirconia, and a method for treating exhaust gas using the catalyst.

A heavy metal oxide glass selected from germanate, tellurite and bismuth oxide glasses provides a host for highly efficient Thulium doped 2 μm oxide glass and fiber lasers. The concentration of Thulium ions is high enough that energy transferred by the phenomenon of cross-relaxation will enhance laser emission at 2 μm and suppress emission at 1.5 μm so that 2 μm emission is dominant.

Provided is a laser diode which realizes NFP with a stable and uniform shape. The laser diode includes, on a semiconductor substrate, an active layer, one or a plurality of strip-shaped current confinement structures confining a current which is injected into the active layer, and a stacked structure including one or a plurality of strip-shaped convex portions extending in an extending direction of the current confinement structure.

The present invention provides a burner, a combustor equipped with the burner, and a gas turbine, with which it is possible to premix a first hydrocarbon-based fuel (for example, natural gas), a second fuel (for example, hydrogen gas), and combustion air, and to spray into the combustion chamber of the combustor a thin and uniform concentration distribution of the premixed air, and with which it is possible to suppress the amount of NOx discharged. On the upstream side of the premix flow path, hydrogen gas is sprayed from second fuel spray nozzles, which project into the premix flow path, into the flow of the combustion air flowing toward the center from the outer edge of an outer cylinder, whereby a primary air-fuel mixture having a uniform concentration distribution is generated without affecting a low-speed region of the combustion air. Natural gas is then sprayed from first fuel spray nozzles into the primary air-fuel mixture, whereby the natural gas, which has a high specific gravity, and the primary air-fuel mixture are adequately mixed in a stirring fashion, and a secondary air-fuel mixture (premixed air) is generated that is lean and has a more uniform concentration distribution than the first air-fuel mixture. By combusting this type of premixed air in the combustion chamber, NOx in the combustion exhaust gas can be suppressed.

A low NO.sub.x combustion mode is executed in which the fuel injected timing IT is greatly advanced to 36.degree. BTDC as compared with a normal value of roughly 10.degree. BTDC. At this fuel injection timing IT, the smoke emission amount is suppressed below an extremely low value, even if the EGR ratio Regr is increased to about 56%, and the NO.sub.x emission amount is suppressed owing to a large amount of EGR, so that the smoke and NO.sub.x can be reduced at the same time.

A fuel pressure detector and a pressure accumulator are disposed in a fuel distribution line, an engine control apparatus controlling activation of a fuel pump based on output from the fuel pressure detector. The fuel pump is activated at maximum capacity to fill the fuel distribution line with fuel at a controlled pressure controlled by a fuel pressure regulator, then stopped. In this state, fuel accumulated under pressure in the pressure accumulator replenishes the fuel distribution line until fuel pressure inside the fuel distribution line drops to a predetermined value due to fuel injection by fuel injection valves.

A purge solenoid valve is opened to introduce an atmospheric pressure into a fuel tank, the purge solenoid valve is closed to operate a negative pressure pump, and set an internal pressure of the tank to a reference pressure Pb. Then, a changeover valve is closed, and the purge solenoid valve is opened to cause a canister to communicate with an intake passage. Further, the changeover valve is opened, and the purge solenoid valve is closed. Then, a first tank internal pressure Po is detected and subtracted from the reference pressure Pb. If a calculated first pressure deviation ΔPo is larger than a first threshold ΔP1, it is determined that there is no open sticking in a sealing valve.

All-optical quasi-phase matching (QPM) uses a train of counterpropagating pulses to enhance high-order harmonic generation (HHG) in a hollow waveguide. A pump pulse enters one end of the waveguide, and causes HHG in the waveguide. The counterpropagation pulses enter the other end of the waveguide and interact with the pump pulses to cause QPM within the waveguide, enhancing the HHG.