73results about How to "Increased peak intensity" patented technology

In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength λ) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L) / λ+Φ((2π)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is Φ radians, L is optical path length of the cavity portion, and λ is the peak wavelength of the spectrum of part of light to be extracted.

A light-emitting element unit which can improve color purity of light emitted from a color filter is provided. A display device with high color purity and high color reproducibility is provided. The light-emitting element unit includes a wiring board, a light-emitting element chip provided over the wiring board, a micro optical resonator provided over the wiring board and at the periphery of the light-emitting element chip, and a phosphor layer covering the light-emitting element chip and the micro optical resonator. The display device includes a display panel having a coloring layer and a backlight module having the light-emitting element unit. Examples of the display panel include: a liquid crystal panel; and a display panel including an opening portion provided over a first substrate, MEMS moving over the opening portion in the lateral direction, and a second substrate provided with a coloring layer in a portion corresponding to the opening portion.

An apparatus and method for producing an improved light emitting diode (LED) spotlight. One or more layers of LEDs shine light into an array of elliptical reflectors. Each elliptical reflector has an LED at one focal point and shares the second focal point with a larger parabolic reflector that collimates the light. A hole in the center of the parabolic reflector receives additional LEDs, with or without collimation optics.

The light array of this invention includes a number of columns and rows of LED's connected in a series / parallel combination. The series parallel combinations effectively optimize the impedance, accommodate failure rate, facilitate light mixing, provide a means of imbedding redundancy, and common cathodes or anodes. This arrangement provides a superior light source for consumer, industrial and specialty markets in respect to mean time between failure, process control, radiant intensity, wavelength mixing, power requirements and other characteristics of the light source. Each column includes a number of rows of plural LED's. The LED's in each row are wired in series and each column is wired in parallel so that if one LED fails only the LED's connected in series with the failed LED will also fail. There is redundancy in the circuit as well as the arrays so that if there are failures different current carrying elements or different series LEDS will automatically by powered on. The array may be connected in series with one or more LED arrays to form a module. Multiple modules may be connected in series with other multiple modules.

An imaging apparatus (100), configured for thermoacoustic tomographic imaging a region of interest (2) in an object (1), comprises a source device (10) being arranged for emitting an electromagnetic energy input into the region of interest (2), a detector device (20) being arranged for detecting mechanical wave response signals generated in the region of interest (2) along multiple angular projection directions in response to the electromagnetic energy input, and an image data acquisition and processing device (30) being arranged for providing tomographic image data representing the image of the region of interest (2) on the basis of the mechanical wave response signals, wherein the source device (10) is adapted for continuously emitting the electromagnetic energy input with a predetermined input modulation, and the image data acquisition and processing device (30) is adapted for converting the mechanical wave response signals into the frequency domain and for performing data processing and image reconstruction in the frequency domain or in the time domain. Furthermore, an imaging method for thermoacoustic tomographic imaging a region of interest (2) in an object (1) is described.

The invention relates to a method preparing crack-free photonic crystals on a surface of a super-hydrophobic organism or a super-hydrophobic imitation organism. According to the invention, monodisperse microspheres are dispersed in water to form an emulsion; the emulsion is applied to the surface of the super-hydrophobic organism or the super-hydrophobic imitation organism, and the emulsion deposits depending on the gravity of the monodisperse microspheres in the emulsion, so that high-quality, self-supporting, crack-free, opal-structure photonic crystals formed by self-assembly of the monodisperse microspheres can be prepared on the surface of the super-hydrophobic organism or the super-hydrophobic imitation organism. The prepared of high-quality, self-supporting, crack-free, opal-structure photonic crystals are used as a sacrificial template; a functional material is filled in the gaps between the monodisperse microspheres forming the sacrificial template; and the sacrificial template is further removed to prepare the high-quality self-supporting, crack-free, inverse opal-structure photonic crystals. The invention has advantages of simple preparation method, low cost and environment-friendliness.

The invention relates to a super fast preparation method of a flawless photonic crystal. The method of the invention employs spin coating, spraying or ink-jet printing, and comprises the steps of: mixing monodisperse emulsion particles, water-soluble polymer monomer, cross-linking agent, initiator and water to obtain a mixed emulsion, and coating or printing the mixed emulsion to the surface of a hydrophilic flexible base material; then carrying out thermal initiation polymerization on water-soluble polymer monomers among the monodisperse emulsion particles in the mixed emulsion to form a polymer, so as to obtain a flawless large-area composite opal structured photonic crystal, which uses the monodisperse emulsion particles as a skeleton and has polymer filled in gaps of the monodisperse emulsion particle skeleton, or a flawless and large-area patterning composite band gap composite opal structured photonic crystal, which uses the monodisperse emulsion particles as a skeleton and has polymer filled in gaps of the monodisperse emulsion particle skeleton. The monodisperse emulsion particles used as the skeleton in the composite opal structured photonic crystal are further dissolved by a solvent to obtain a flawless large-area inverse opal structured photonic crystal and a flawless and large-area patterning composite band inverse opal structured photonic crystal.

A photoirradiation device for irradiating a prescribed irradiation position on an irradiation surface with line-shaped light extending in a first direction and having a prescribed line width in a second direction perpendicular to the first direction is equipped with an optical unit for irradiating the irradiation surface with line-shaped light parallel to the first direction, and having: N number (N is an integer of 2 or higher) of light-source modules arranged in the first direction on a substrate with a first interval interposed therebetween, and positioned in a manner such that the optical axes thereof are oriented in a prescribed direction; and N number of optical elements for guiding the light from each of the light-source modules to a prescribed optical path, and positioned along the optical path of each of the light-source modules. Therein: each of the light-source modules has a light-emitting part extending in a first direction; and each of the optical elements magnifies the light emitted from the light-emitting parts at a prescribed magnification factor in the first direction, and satisfies conditional expression (1), given that the first interval is a, the length of the light-emitting parts in the first direction is b, and the prescribed magnification factor is alpha: alpha*b>=a ... (1).

The invention discloses an ultrasound contrast image segmentation method based on a statistical partial differential model. The method comprises a preprocessing step and an online segmentation step. At the preprocessing step, a to-be-segmented image and an initial contour are obtained; and at the online segmentation step, an energy function is obtained by using the to-be-segmented image and the initial contour as inputs, an edge stop function is introduced into the energy function to constrain the length item and an LoG image energy function is added, numerical solution is carried out on the energy function, and target edge capturing and segmentation are carried out on a single or a plurality of different ROI images quickly. The ROI in an ultrasound contrast image is segmented; a doctor isassisted in obtaining time strength curves of masses in a lesion region and same level reference regions like parenchymal organs including the liver and the kidney and the like and superficial organsincluding the breast and the thyroid gland and the like by observing the segmentation result of the whole sequence, so that a quantitative index is obtained by the analysis.

The invention relates to a mass spectrum qualitative and quantitative analysis method for free fatty acids based on a double-derivatization technology. The mass spectrum qualitative and quantitative analysis method comprises the following steps: 1) a photochemical derivatization reaction of double bonds of unsaturated fatty acids; 2) an N,N-diethylethylenediamine derivatization reaction of carboxyl terminals of the fatty acids; 3) a qualitative method for precise structures of the fatty acids; and 4) a quantitative method for the fatty acids. The method disclosed the invention is used for precise qualitative and quantitative analysis of the free fatty acids in actual samples, so that the problems that double-bond positions of the unsaturated fatty acids, particularly polyunsaturated fattyacids, are difficult to authenticate and the fatty acids are low in ionization efficiency and poor in detection sensitivity under a negative ion mode are solved, and high-sensitivity and accurate qualitative and quantitative analysis for the free fatty acids in the actual samples is realized.

An aesthetic treatment device including: a multi illumination system having at least one source in the visible region, disposed around a periphery of a predetermined area of skin; an imaging device, sensitive to the illumination system, to discern features on or in the skin within the predetermined area of skin to be treated; multiple treatment light sources mounted on an optical bench and aimed and focused to a point of treatment in the predetermined area of skin; a mechanical guidance system to guide the multiple treatment light sources; and a pulse generator to control power output of the multiple treatment light sources based upon the treatment to be applied to the predetermined area of skin.

The present invention related to a nitride phosphor represented by the following general formula (1), the nitride phosphor having an x value of less than 0.43 in luminescent color coordinates (x, y) upon being excited with excitation light of 455 nm, and a reflectance Ra of 89% or more at 770 nm;LnxSiyNn:Z  (1),wherein Ln is a rare-earth element excluding the element used as an activator, Z is an activator, x satisfies 2.7≦x≦3.3, y satisfies 5.4≦y≦6.6, and n satisfies 10≦n≦12.

It is possible to reduce a drop in output power in a positive-dispersion element used as a pulse compressor, thus improving multiphoton-excitation efficiency. Also, reducing the size of the positive-dispersion element makes it easier to attach it to a microscope main body and to accommodate it therein, thus improving maneuverability. The invention provides a laser microscope including a laser light source for emitting ultrashort-pulsed laser light; a pulse expander for expanding the ultrashort-pulsed laser light emitted from the laser light source; a large-diameter single-mode fiber for transmitting the ultrashort-pulsed laser light expanded by the pulse expander; a pulse compressor for compressing the ultrashort-pulsed laser light transmitted by the single-mode fiber; and a microscope main body for irradiating a specimen with the ultrashort-pulsed laser light compressed by the pulse compressor.

The present passively Q-switched laser comprises a condensing optical system for condensing a laser beam emitted from a laser light source onto the surface of the solid-state laser medium. The surface of a solid-state laser medium is disposed off the condensation position of the laser beam produced by the condensing optical system,

An antisqueezed light generator system is built with only the components for optical communications with long-term reliability. A cw-LD light is made pulses by an intensity modulator and amplified by an optical amplifier. The amplified optical pulses are made short by high-order soliton pulse compression effect at a first optical fiber and peak power is increased. A fluctuation is expanded in a phase direction through propagation in a second optical fiber. Because an initial fluctuation is amplified by the optical amplifier, the fluctuation expanded in the phase direction is increased to the extent of the amplification and sufficient antisqueezing strength can be obtained.

A drive apparatus for a plasma display panel useing a charge recovery circuit 12 that re-uses a recovered electrical charge, the drive apparatus comprising: a brightness detection means 16, 17 for detecting a brightness so as to obtain screen brightness information; and a charge recovery timing control means 4 for controlling a charge recovery period T from a time at which a charge recovery operation of the charge recovery circuit 12 starts to a time of fixing to a sustaining potential or a ground potential, wherein the charge recovery timing control means 4 controls the charge recovery period of the charge recovery circuit 4 in response to the brightness information obtained by the brightness detection means 16, 17.

The invention provides a new quantum well structure, which can further effectively increase the recombination probability of carrier, improve quantum efficiency and realize optimization and improvement of efficiency of a photoelectric device. AlInGaN is used as a barrier, an In and Al component gradual barrier layer structure is designed to substitute barrier layer structure design of the conventional quantum well structure. The In component is doped into the barrier layer structure of the quantum well, the band bending of the quantum well is reduced, a quantum confined stark effect is weakened, the electron blocking efficiency of an electron barrier layer is improved, a hole injection efficiency of the quantum well is increased, spatial wave function overlap of electrons and space is increased, and these have a positive effect on improvement of luminous efficiency of an LED (Light Emitting Diode); meanwhile the Al component is doped into the barrier layer structure of the quantum well, so migration of the electrons to a P layer is effectively blocked; through the gradual component design of the AlInGaN, the influence of a polarization electric field can be reduced, and the spontaneous emission spectrum strength of the quantum well is improved.

A mass spectrometry apparatus configured to allow a user to designate an upper limit value UL together with a lower limit value, as a peak sorting condition. A data processing section is operable to determine whether respective peak intensities of a plurality of peaks appearing on a mass spectrum fall within an intensity range Ath defined by upper and lower limit values UL, LL, and exclude any peak out of the intensity range Ath. The remaining ions are selected as precursor ions, for example, in descending or ascending order of peak intensity so as to perform an MS2 analysis. The upper limit UL is adequately set to allow the MS2 analysis for a sample component with a low concentration, by priority, while avoiding a sample component exhibiting a high intensity and having no need for the MS2 analysis.

The invention relates to the technical field of material preparation and photocatalysis. The technical scheme comprises that a preparation method of an indium tin sulfide visible-light-induced photocatalyst comprises the following steps: (1) weighing stannic chloride pentahydrate and indium trichloride, dissolving stannic chloride pentahydrate and indium trichloride in a proper amount of deionizedwater, then weighing any one reactant of three sulfur sources, namely thioacetamide, thiourea or L-cysteine, adding the reactant into the uniformly stirred aqueous solution, adjusting the pH value to1-13, and continuously stirring for 2 h, wherein the molar ratio of tin tetrachloride pentahydrate to indium trichloride to the reactant is 1.5:4:8; (2) transferring the uniformly stirred solution into a hydrothermal reaction kettle, and carrying out a reaction for 10-12 h in an oven at the temperature of 140-180 DEG C; and naturally cooling to room temperature to obtain precipitates, respectively washing the precipitates with deionized water and absolute ethyl alcohol for multiple times, and carrying out vacuum drying at the temperature of 60 DEG C for 10 h to obtain an orange powder sample.The preparation method is simple in steps and low in cost.

The invention provides a reflecting-type super diffraction line focusing device based on a metal strip-shaped antenna array. The device sequentially comprises the metal strip-shaped antenna array, a dielectric layer, a metal membrane layer and a substrate layer. Each metal strip-shaped antenna array unit is of a Y-direction array structure formed by arranging metal strip-shaped antennas in the Y direction by taking Ty as a cycle, and the metal strip-shaped antenna array units are arranged in the X direction by taking Tx as a cycle to form the metal strip-shaped antenna array. For the given incident light wavelength gamma, regulation and control over the amplitude and the phase of reflected light in the space plane are achieved by selecting a metal material, a material of the dielectric layer and the thickness of the metal strip-shaped antennas and changing the length L and the width W of metal strips, the length Li and the width Wi of the i metal-shaped antenna of which the center is located at xi are obtained according to amplitude space distribution A(xi) and phase space distribution P(xi), and then a far-field super diffraction line focusing function on the reflected light is achieved. According to device, the diffraction limit can be broken through, the focal spot size smaller than the diffraction limit is achieved, the sidelobe peak ratio is low, and the peak strength is high.

The invention discloses a method for modification of rubber in crumb rubber concrete. The method comprises the steps of 1, preparing acidic potassium permanganate treating fluid, wherein the mass of potassium permanganate accounts for 0.5-3% of the total mass of the treating fluid, and nitric acid accounts for 0.5-6% of the total mass of the treating fluid; 2, soaking rubber particles in the acidic potassium permanganate treating fluid for 5-50 h, and filtering, cleaning and then drying the rubber particles. After being modified by means of the acidic potassium permanganate treating fluid, the wettability of the rubber particles is improved remarkably, the contact angle is reduced to 67.1 degrees from the original 80.3 degrees, and the surface polarity of the rubber particles is improved through the action between acidic potassium permanganate and the rubber particles; the peak intensity of the surface hydroxyl group or ether group of the modified rubber particles is improved remarkably, the carbanyl group or C=C bond in rubber can be partially oxidized into hydroxyl or carboxyl by potassium permanganate, and then the polarity of rubber macromolecules is improved; bonding force and mechanical engaging force between the modified rubber particles and cement paste are higher, and compressive strength and breaking strength are high.

Belonging to the technical field of building materials, the invention specifically relates to a method for synthesis of tetracalcium aluminoferrite by a sol-gel technology. The raw materials used by the synthesis method include: calcium nitrate tetrahydrate, aluminum nitrate nonahydrate, iron nitrate nonahydrate, citric acid monohydrate, ethylene glycol and water. The specific synthesis steps consist of: dissolving three inorganic salts of certain stoichiometric ratio in deionized water and mixing them uniformly, adding citric acid to prepare a light yellow metal-citric acid chelate solution, then adding ethylene glycol to undergo an esterification reaction, subjecting the obtained sol to aging under complete stirring at 80DEG C so as to obtain sticky wet gel, then further drying it for 24h at 150DEG C to obtain dry gel, and grinding and calcining the dry gel so as to obtain a tetracalcium aluminoferrite monomineral. The tetracalcium aluminoferrite powder prepared by the sol-gel technology has the characteristics of high purity, superfineness, and easy sintering, etc.

The invention discloses a method for producing strong electromagnetic resonance and bright structure color based on a three-dimensional ordered structure of a medium-refractive-index material. Electromagnetic resonance peaks produced when medium-refractive-index dielectric microspheres interact with light in a visible region are subjected to coherent superposition by using the highly ordered three-dimensional structure, the intensity of the peaks is increased, and then the structure color can be observed. Besides, when the observation angle is small, the peak intensity of the electromagnetic resonance peaks is much higher than the intensity of reflection peaks of a photonic band gap, and the half peak width is much lower than the half peak width of the photonic band gap, that is, when theobservation angle is small, the structure color produced by the electromagnetic resonance peaks is higher in saturation and higher in brightness.