38 results about "Angular dependence" patented technology

An external cavity laser has a mirror-based resonant tunable filter, such as a Fabry Perot tunable filter or Gires-Tournois interferometer tuning element, with the tunable filter being preferably used as a laser cavity mirror. A mirror-based resonant tunable filter is selected in which the spectral response in reflection has an angular dependence. A tilt scheme is used whereby by selecting an appropriate angle between the filter's nominal optical axis and the cavity optical axis, a narrowband peak spectral reflection is provided to the laser cavity. This tunable narrowband spectral reflection from the filter is used to lock and tune the laser output wavelength.

A method and an apparatus for displaying 3D images are disclosed. 2D images are projected from multiple points to a surface with narrow diffusion characteristics, thus it is possible to get a 3D light field with arbitrary angular dependence. According to the invention, the projectors (10) do not target particular screen (12) points. The projectors (10) are directed to the screen (12) with no special positioning, however from the bunch of light beams present, pertaining to the large number of pixels in the projected images, it is possible to select and define a pixel-wise precise 3D light-field through a calibration process. A novel calibration method and device are also described for calibrating 3D display systems, the device being equipped with proper image sensor(s) and a control system.

A microcavity color OLED device, includes at least one light-emitting layer arranged so as to produce light; a reflector and a semi-transparent reflector forming a microcavity structure for resonating the light produced in the at least one light emitting layer; and a color filter element disposed over the microcavity structure including a light-scattering material selected so as to reduce the angular dependence of the light that has passed through the color filter element.

The invention relates to a method and system for determining an aerodynamic drag area CxA of a moving vehicle, for example a bicycle, in dependence upon the airflow yaw direction and speed without the use of a wind tunnel. The vehicle is equipped with sensors for collecting time-stamped values indicative of the vehicle speed, propulsion force, airflow speed and yaw angle of the airflow at various points during the trip. The trip data are then processed using successively refined hypotheses regarding the CxA(yaw) dependence to generate a plurality of elevation profiles for the travelled path. The generated elevation profiles are then evaluated based on available route elevation information to select a correct dependence of the aerodynamic drag area upon the yaw angle of the airflow.

The present invention relates to an organic light emitting element comprising: a first light emitting unit comprising a light emitting layer between a pair of electrodes; and a second light emitting unit comprising a light emitting layer between a pair of electrodes. In the organic light emitting element, one electrode of the two pairs of electrodes which is positioned on the outermost side has light reflective properties, and the other electrodes have light transmission properties, while a light-transmitting insulating layer is provided between the first and second light emitting units. The insulating layer is formed in a thickness to prevent light emitted by the light emitting layer of the light emitting unit without the light reflective electrode from interfering with other lights, or formed to have properties of scattering the emitted light. Thus, the interference between the lights emitted by the light emitting layers and the other lights is reduced, so that in the organic light emitting element, the angular dependence of light emission spectrum is small, making it possible to adjust color.

A method for recognizing a vertical misalignment of the radiation characteristic of a radar sensor of a control system for a motor vehicle, in particular of a driving speed and/or adaptive driving speed system, including the following steps: the receive power of the radar radiation reflected from an object is determined; the distance dependence and the horizontal angular dependence are compensated according to the radar equation; the functional dependence of the receive power, processed in this way, on the distance from the object is compared to an expected and stored curve of the receive power over the distance, and from this the vertical misalignment of the radiation characteristic of the radar sensor is inferred.

An ultrasound diagnostic device that is able to generate images with high sensitivity for structures and unnoticeable artifacts. The ultrasound diagnosis apparatus includes an image-capturing part, a calculating part, and a composition part. The image-capturing part deflects ultrasound waves at a plurality of different deflection angles to transmit ultrasound waves to a subject, receives echo signals from the subject, and generates a plurality of ultrasound image data in which the deflection angles of the ultrasound waves are different in each. The calculating part obtains, based on the plurality of ultrasound image data, the trend of the angular dependence of the plurality of ultrasound image data on the deflection angles. The composition part changes the weights of the plurality of ultrasound image data in accordance with the trend of the angular dependence, and composes the plurality of ultrasound image data.

A highly directional thermal emitter device comprises a two-dimensional periodic array of heavily doped semiconductor structures on a surface of a substrate. The array provides a highly directional thermal emission at a peak wavelength between 3 and 15 microns when the array is heated. For example, highly doped silicon (HDSi) with a plasma frequency in the mid-wave infrared was used to fabricate nearly perfect absorbing two-dimensional gratings structures that function as highly directional thermal radiators. The absorption and emission characteristics of the HDSi devices possessed a high degree of angular dependence for infrared absorption in the 10-12 micron range, while maintaining high reflectivity of solar radiation (˜64%) at large incidence angles.

A device for sensing, locating, and characterizing a radiation emitting source, including: a detection crystal having dimensions great enough such that regional differences in radiation response are generated in the detection crystal by radiation impinging on one or more surfaces of the detection crystal; and a plurality of detectors one or more of coupled to and disposed on a plurality of surfaces of the detection crystal operable for detecting the regional differences in radiation response generated in the detection crystal by the radiation impinging on the one or more surfaces of the detection crystal.

A RE-type oxide superconducting wire having excellent angular dependence for magnetic field of Jc is obtained by finely dispersing magnetic flux pinning centers into a superconductor. A mixed solution which comprises a metal-organic complex solution including a metal element which composes a RE-type oxide superconductor whose Ba content is reduced and a metal-organic complex solution including at least one or more kinds of metals which are selected from Zr, Ce, Sn, or Ti which has a larger affinity for Ba is coated onto an intermediate layer of a composite substrate, and the assembly is then calcined to disperse artificially and finely oxide particles (magnetic flux pinning centers) including Zr. Thus, the angular dependence for magnetic field (Jc_,min/Jc_,max) of Jc can be remarkably improved.

The invention belongs to the technical field of organic electroluminescence, and provides an aromatic ring compound, wherein the aromatic ring compound has a structure represented by a chemical formula i; wherein m is 0, 1 or 2; X1-X6 are each independently selected from N atoms or C atoms, and 1 to 3 of the X1-X6 are nitrogen atoms; and Ar1-Ar4 are each independently selected from substituted orunsubstituted C6-C60 aromatic rings, C8-C60 fused aromatic rings, C4-C60 heteroaromatic rings, and C8-C60 fused heteroaromatic rings. When the compound is used as a CPL (cap layer) of an organic light-emitting device (such as an OLED), the light extraction efficiency and light emission efficiency of a top emission organic light-emitting display device can be improved (especially the most effectivefor blue light pixels), and the angular dependence of light emission of the OLED device can be alleviated (the most effective for red/green pixels). At the same time, the CPL can effectively block water and oxygen in the external environment and protect an OLED display panel from being corroded by water and oxygen.

The invention provides an azacyclo-compound having the structure shown in the chemical formula 1. In the formula 1, X1 to X6 independently represent N or C atoms, at least one of X1 to X6 is an N atom, m and n independently represent 0, 1 or 2, m+n is greater than 1, R1 represents a hydrogen atom, a C1-C10 linear or branched alkyl group, a substituted or unsubstituted phenyl group, a diphenyl group, a terphenyl group, a pyridyl group, a naphthyl group or an anthracenyl group, Ar is selected from a dimethyl fluorene group, a phenyl group and a carbazolyl group, and Ar1 and Ar2 independently represent a substituted or unsubstituted benzimidazole group. The azacyclo-compound has a high refractive index, when the azacyclo-compound is used as a CPL cap layer of an organic light-emitting and display device (such as an OLED), light extraction efficiency and luminous efficiency of the top emission organic photoelectric device can be improved, and the angular dependence of OLED device illumination is reduced. The azacyclo-compound has a small extinction coefficient in the blue region and almost no absorption of blue light and improves luminous efficiency.

A method according to the present invention has: isolating, by extraction, particles contained in a metal material to be analyzed in a solution using a particle isolator; dispersing the particles isolated by extraction into a solvent to prepare a dispersion, and fractionating the dispersion into a plurality of particle dispersions based on particle sizes, using a field flow fractionator; and irradiating laser light on each of the particle dispersions separated based on predetermined particle sizes, to thereby measure absolute values of the particle size based on angular dependence of reflection intensity, and also to thereby measure the number density based on magnitude of reflection intensity.

The invention relates to a method for angle-dependent color value correction, concretely a method for registering color measured values on printing materials with a color sensor includes registering the color measured values on the printing materials at different angles of observation of the color sensor. The angular dependence of the color measured values registered on the printing materials at different angles of observation is corrected in a computer.

The invention discloses a white light series organic electroluminescence device. The white light series organic electroluminescence device comprises a substrate, an anode, a cathode and at least two white light luminescence unit layers positioned between the anode and the cathode, wherein the two adjacent white light luminescence unit layers are connected in series through a charge generating layer; each white light luminescence layer comprises an organic functional layer; each organic functional layer comprises at least one doped blue light layer and at least one non-doped complementary luminescence layer; and white light is obtained after light colors generated by at least one doped blue light layer and at least one non-doped complementary luminescence layer are mixed. The charge generating layer is used for connecting the white light luminescence unit layers to form the organic electroluminescence device, and the special selection and superimposed manners of the organic functional layers in the white light luminescence layers are improved, so that the structure and preparation technology of the device are greatly simplified on the basis of guaranteeing that the device has excellent luminescence property, and the device is stable in luminescence property and low in angular dependence and has wider application field.

The invention relates to the field of organic electroluminescent materials, in particular to a novel azabenzene-benzimidazole organic compound, a display panel and a display device. The azabenzene-benzimidazole organic compound has the structure shown as follows. The compound of the invention can be applied to a cover layer of an organic light-emitting device, a hole transport layer, an electron transport layer, and a light-emitting layer. The light extraction efficiency and light-emitting efficiency of a top-emitting organic photoelectric device (especially most effective for blue light pixels) can be improved, and the angular dependence of light-emitting of an OLED device (most effective for red/green light pixels) can be alleviated. Moreover, water and oxygen in an external environmentare effectively prevented, and an OLED display panel is protected from being attacked by the water and the oxygen.

A method of manufacturing an optical integrator panel is provided. The method comprises the steps of: suspending a plurality of elongate particles in a liquid; applying an electric or magnetic field to the suspension to orientate the particles with parallel longitudinal axes; and solidifying the liquid to fix the orientation of the particles, thereby forming an optical integrator panel having a homogeneous distribution of elongate particles. An optical integrator panel is also provided. The optical integrator panel is adapted to reduce the angular dependence of contrast of a liquid crystal display. Specifically, the optical integrator panel is for placement in the path of reflected or transmitted light emitted by the liquid crystal display. The optical integrator panel comprises: a solid transparent panel; and a plurality of elongate particles homogeneously distributed in the panel, wherein the plurality of elongate particles are orientated with parallel longitudinal axes.