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403 results about "Radiation angle" patented technology
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In fiber optics, the radiation angle is half the vertex angle of the cone of light emitted at the exit face of an optical fiber. The cone boundary is usually defined (a) by the angle at which the far-field irradiance has decreased to a specified fraction of its maximum value or (b) as the cone within which there is a specified fraction of the total radiated power at any point in the far field.
LED light and filament thereof
InactiveUS20140369036A1Light colorImprove efficiencyLight source combinationsLighting support devicesHigh colorEngineering
The invention discloses a LED lamp and filament thereof. The LED filament includes a substrate, a light emitting unit secured onto at least one side surface of the substrate, and a package adhesive layer surrounded on the periphery of the light emitting unit; the substrate is configured to be of an elongated bar construction; the light emitting unit comprises a plurality of blue light chips and red light chips regularly distributed on the substrate and sequentially connected to one another in series. For the LED filament of the invention, as the light emitting unit composed of blue and red light chips is disposed on the substrate, the LED filament has high color rendering and large light radiation angle.
Owner:SHENZHEN RUNLITE TECH
Method and device for inspecting pipelines
InactiveUS6848313B2Avoid bouncingImprove resilientAnalysing solids using sonic/ultrasonic/infrasonic wavesUltrasonic/sonic/infrasonic wave generationEngineeringBoundary region
The invention concerns a method and a device for inspecting pipelines, in particular for detecting defects in pipelines by means of ultrasound. Towards this end, measuring sensors transmit ultrasound signals during passage through a pipeline. The signals reflected on boundary regions of a pipeline wall, e.g. surfaces or defects, are then measured and evaluated. The invention is characterized in that partial regions of the measuring sensors (virtual sensors) formed of a plurality of neighboring sensor elements irradiate ultrasound signals into the pipe wall at at least one radiation angle which is inclined with respect to the normal to the pipe wall and the signals reflected at boundary regions of the pipe wall are received by same and / or other partial regions of the respective measuring sensors, wherein defects in the pipe wall are determined by evaluation of the acoustical signals reflected by different boundary regions.
Owner:PII PIPETRONIX
Low profile antenna
InactiveUS6157348AGood radiation characteristicsEasy to adjustSimultaneous aerial operationsRadiating elements structural formsWireless transmissionGround plane
A low-profile antenna has increased broad-banding capacities as well as a lower radiation angle for enhanced cellular or mobile telephone wireless transmissions. Enhancing a basic PIFA antenna, a top metal radiator is notched so as to provide additional corners and greater perimeter length thereby enhancing the bandwidth capabilities of the antenna. Both ground and tuning tabs serve to enhance operational characteristics and a dielectric cover incorporating prismatic qualities serves to lower the radiation angle of transmission from approximately forty degrees (40 DEG ) to twenty degrees (20 DEG ). The prisms provide an operating radiation angle in the range of approximately seventy degrees (70 DEG ) to twenty degrees (20 DEG ). In one embodiment, a sheet of plastic foam slightly thicker than the depth of an associated connector is secured to the underside of the bottom plate to act as a friction seal when the antenna is screwed onto a mating connector, allowing for slight variations in the curvature of the mounting surface. By making the bottom conductive plate only slightly larger than the top radiator, the antenna's resonant frequency becomes independent of ground plane mounting and may not require such a ground plane. Under such circumstances, some adjustment of the tuning parameters may be required in order to provide optimum response.
Owner:LAIRD CONNECTIVITY INC
Camera system with autonomous miniature camera and light source assembly and method for image enhancement
InactiveUS20110261178A1Convenient lightingQuality improvementSurgeryEndoscopesRadiation angleInvasive surgery
The present Invention relates to a camera system suitable for use in minimally invasive surgery (MIS), among other applications. In at least one embodiment, the camera system includes an autonomous miniature camera, a light source assembly providing features such as steerable illumination and a variable radiation angle, and a control and processing unit for processing images acquired by the camera Io generate improved images having reduced blurring using a deblurring algorithm.
Owner:RGT UNIV OF CALIFORNIA
Tubular LED illuminating device with 360-degree radiation
A tubular LED illuminating device comprises a tubular shell, a supporting frame and a plurality of light emitting units. An inner surface of the shell forms a plurality of elongate protrusions extending along a direction parallel to an axial direction of the shell. Each of the protrusions defines at least one elongate recess extending along the axial direction of the shell. The supporting frame is received in the shell and comprises at least three supporting plates. Two opposite edges of each supporting plate are respectively embedded in the adjacent recesses of different protrusions. The light emitting units are arranged on the at least three supporting plates, and light emitted from the light emitting units emits out through the shell and has a radiation angle of 360 degrees.
Owner:FOXSEMICON INTEGRATED TECH INC
Light source device, display device, terminal device, and transparent/scattering state switching element
ActiveUS20070268427A1Change colorAvoid changePlanar/plate-like light guidesNon-linear opticsDisplay deviceTerminal equipment
A light source device has a transparent / scattering state switching element for switching the range of irradiation angles, and liquid crystal molecules and dichroic dye molecules are dispersed in a polymer matrix in the PDLC layer of the transparent / scattering state switching element. The range of irradiation angles can thereby be switched, and the color can be prevented from changing when the radiation angle is switched.
Owner:BEIHAI HKC OPTOELECTRONICS TECH CO LTD
Laser radar apparatus and method of acquiring image thereof
ActiveUS20150226853A1Easy to useOptical rangefindersElectromagnetic wave reradiationPulse controlRadiation angle
Disclosed is a laser radar apparatus. The laser radar apparatus includes: a light transmission unit configured to output a laser pulse by using a light source; a light reception unit configured to receive a reflected laser pulse in connection with the laser pulse; and a controller configured to adjust a repetition rate of the laser pulse of the light source, in which the controller adjusts the repetition rate of the laser pulse based on at least one of reception power, a target distance, a movement speed, a vertical angle, and a radiation angle.
Owner:ELECTRONICS & TELECOMM RES INST
Light emitting device package, light source module, backlight unit, display apparatus, television set, and illumination apparatus
ActiveUS20110292302A1Reducing optical distanceReduce in quantityTelevision system detailsPoint-like light sourceElectricityTransmittance
A light source module, a backlight unit, a display apparatus, a television set, and an illumination apparatus are provided. The light source module includes: one or more light source units including a light emitting element emitting light when electricity is applied thereto; and an optical sheet disposed above the light source units and exhibiting bidirectional transmittance distribution function characteristics having first and second peaks at radiation angles less than 0° and greater than 0°.
Owner:SAMSUNG ELECTRONICS CO LTD
Luminescent diode, fabrication method thereof, and backlight assembly having the same
InactiveUS20070153545A1Improve brightness uniformityAvoid problemsShow cabinetsImpedence networksImaging qualityEngineering
A luminescent diode (LED) that improves brightness uniformity, a fabrication method thereof, and a backlight assembly having the same are disclosed. The LED includes an LED chip that emits light in a side surface of an LCD device; and an optical guide element on the LED chip that enlarges a radiation angle of the light. The LED may alternatively include an LED chip that emits light on a bottom surface of the LCD device; and an optical guide element on the LED chip that enlarges a radiation angle of the light. The radiation angle of light maximally enlarged to prevent hot spots caused by brightness nonuniformity. An enhanced image quality results.
Owner:LG DISPLAY CO LTD
Compact LED module and projection display adopting the same
ActiveUS7059731B2Effective exposureMeasurement apparatus componentsPoint-like light sourceComputer moduleLight beam
A compact light source module includes a compact light source and a collimator that includes a parabolic first reflective surface to reduce a radiation angle at which a light beam radiates from the compact light source, so as to emit the light beam through a side aperture and a plane second reflective surface which is located under the first reflective surface and comprises an incident portion through which the light beam radiates from the compact light source. The compact light source is located in the vicinity of a focal point of the first reflective surface.
Owner:SAMSUNG ELECTRONICS CO LTD
Phoshor and light-emitting diode
InactiveUS20070176531A1Efficient emissionsEasy Color AdjustmentPolycrystalline material growthDischarge tube luminescnet screensPhosphorColor changes
Disclosed is a phosphor which is excited by a long wavelength light source in the ultraviolet region or blue-violet visible region and mainly emits light in violet-blue-yellow-red visible region. Also disclosed is a low-cost light-emitting diode which is easily mounted and excellent in color rendering properties. This light-emitting diode does not have much color change due to radiation angle. A phosphor composed of SiC is characterized in that it is excited by an outside light source for emitting light and doped with N and at least one of B and Al.
Owner:MEIJO UNIVERSITY
Semiconductor light-emitting device and method for fabricating the same
InactiveUS7102175B2Improve external quantum efficiencyStable characteristicsDomestic plumbingSuction cupsRadiation angleLength wave
Projections / depressions of a two-dimensional periodic structure are formed in a p-GaN layer (4) such that the period of the projections / depressions is 1 to 20 times the wavelength of light radiated from an active layer (3) in a semiconductor. As a result, a diffractive effect achieved by the projections / depressions of the two-dimensional periodic structure change the direction in which the light radiated from the active layer (3) travels. If the projections / depressions are not provided, light at a radiation angle which satisfies conditions for total reflection at the interface between a semiconductor device and an air cannot be extracted to the outside of the semiconductor device so that the light emission efficiency of the device is low. By contrast, the projections / depressions as formed with a period according to the present invention diffract the light at an angle which does not cause total reflection so that the efficiency with which the light is extracted to the outside of the semiconductor device is improved exponentially. This improves the light emission efficiency of the device.
Owner:PANASONIC CORP
Liquid Crystal Display Using Different Light Radiation Angles Of Light Emitting Diodes
ActiveUS20080316767A1Less of dark areaReduce manufacturing costMechanical apparatusVessels or leading-in conductors manufactureLiquid-crystal displayLight guide
A liquid crystal display with low manufacturing cost, small dark area and compact exterior is provided by utilizing a plurality of differently radiating light emitting diodes at different angles. The liquid crystal of present invention includes a thin film transistor panel for displaying image, a backlight assembly for providing light to the thin film transistor panel with a plurality of light emitting diodes with different light radiation angles and a light guiding plate, and a frame unit for encompassing the thin film transistor panel and the backlight assembly. The light emitting diodes are placed either at the mid-point of light incident surface or the corner portion of the light guiding plate.
Owner:SAMSUNG DISPLAY CO LTD
Liquid crystal display using different light radiation angles of light emitting diodes
InactiveUS8007158B2Reduce areaReduce manufacturing costVessels or leading-in conductors manufacturePlanar/plate-like light guidesLiquid-crystal displayLight guide
A liquid crystal display with low manufacturing cost, small dark area and compact exterior is provided by utilizing a plurality of differently radiating light emitting diodes at different angles. The liquid crystal of present invention includes a thin film transistor panel for displaying image, a backlight assembly for providing light to the thin film transistor panel with a plurality of light emitting diodes with different light radiation angles and a light guiding plate, and a frame unit for encompassing the thin film transistor panel and the backlight assembly. The light emitting diodes are placed either at the mid-point of light incident surface or the corner portion of the light guiding plate.
Owner:SAMSUNG DISPLAY CO LTD
Semiconductor light-emitting device and method for fabricating the same
InactiveUS20060267034A1Improve external quantum efficiencyStable characteristicsSemiconductor/solid-state device manufacturingDomestic plumbingDevice materialRadiation angle
Projections / depressions of a two-dimensional periodic structure are formed in a p-GaN layer (4) such that the period of the projections / depressions is 1 to 20 times the wavelength of light radiated from an active layer (3) in a semiconductor. As a result, a diffractive effect achieved by the projections / depressions of the two-dimensional periodic structure change the direction in which the light radiated from the active layer (3) travels. If the projections / depressions are not provided, light at a radiation angle which satisfies conditions for total reflection at the interface between a semiconductor device and an air cannot be extracted to the outside of the semiconductor device so that the light emission efficiency of the device is low. By contrast, the projections / depressions as formed with a period according to the present invention diffract the light at an angle which does not cause total reflection so that the efficiency with which the light is extracted to the outside of the semiconductor device is improved exponentially. This improves the light emission efficiency of the device.
Owner:PANASONIC CORP
Light emitting diode
InactiveUS20120032573A1Discharge tube luminescnet screensElectric discharge tubesLuminous intensityPhosphor
An LED comprises a substrate, an LED chip mounted on the substrate, an encapsulation encapsulating the LED chip, and a phosphor layer containing phosphor particles disposed on an outer surface of the encapsulation. A luminous intensity I of light generated by the LED chip and a radiation angle θ are in Lambertian distribution and satisfy following formula: I=I0×cos θ, here the radiation angle θ is not lower than 0°, and is not higher than 90°, and I0 is a luminous intensity at a central axis of the LED chip, and the radiation angle θ is an angle between the light and the central axis. One of parameters of concentration, particle number of the phosphor particles in the phosphor layer and a thickness of the phosphor layer is also in Lambertian distribution relative to the radiation angle θ.
Owner:FOXSEMICON INTEGRATED TECH INC
Light emitting panel
ActiveUS7309151B2Measurement apparatus componentsSolid-state devicesRadiation angleLight-emitting diode
In one embodiment, a light emitting panel includes a base panel and a plurality of light emitting elements mounted to the base panel. Each of the light emitting elements produces an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60°. One or more light conditioners are positioned adjacent the base panel to receive and condition light produced by the light emitting elements.
Owner:AVAGO TECH INT SALES PTE LTD
Color filter using surface plasmons, liquid crystal display device and method for fabricating the same
InactiveCN102103223AIncrease the aperture ratioHigh light transmittanceOptical filtersNon-linear opticsLiquid-crystal displayOptical transmittance
The present invention relates to a color filter using surface plasmons, a liquid crystal display (LCD) device and a method for fabricating the same. Through forming a transmissive pattern which is composed of a plurality of sub-wavelength holes having a period on a metal layer for selectively transmitting the light with a certain wavelength, the transmittance of a LC panel can be improved and a whole process can be simplified. There is provided a color filter using surface plasmons, comprising: the metal layer; the transmissive pattern formed in the metal layer, and consisting of a plurality of sub-wavelength holes having a period; and a plurality of non-penetrating grooves formed at a region encompassing the plurality of holes, wherein a desired color is implemented by selectively transmitting light of a specific wavelength by using surface plasmons. A plurality of grooves with the period is formed on an area with a plurality of holes thereby realizing the light beam with extraordinarily narrow radiation angle. Thus the correlation between a wavelength of a main peak of the transmitted light and a visual angle can be improved. Furthermore the transmittance and calibration are improved.
Owner:LG DISPLAY CO LTD
Illuminating unit with reflective collimator and image projection system including the same
InactiveUS20060104065A1Effectively collimatingPoint-like light sourceProjectorsLight beamOptoelectronics
An illuminating unit includes a reflector including a parabolic reflecting surface and an incident portion and an exit portion intersecting with each other a light source to emit a beam onto the reflecting surface through the incident portion, a light source deviation compensator disposed between the reflector and the light source to focus an image of the light source is focused to a focal point of the reflecting surface, and a light path changer to direct at least a portion of a beam with a radiation angle less than an angle of the exit portion toward the reflecting surface.
Owner:SAMSUNG ELECTRONICS CO LTD
Optical transmitter
InactiveUS7281860B2Coupling efficiency is highLow costSolid-state devicesCoupling light guidesLight beamMiniaturization
Owner:SHARP KK
Loudspeaker apparatus with circumferential, funnel-like sound outlet opening
ActiveCN102845078ASound producing devicesFrequency/directions obtaining arrangementsSound generationEngineering
The invention relates to a loudspeaker apparatus which comprises at least one sound generation means, wherein an at least partially sound-conducting channel is arranged in a sound radiation direction of the sound generation means and is suitable for directing sound emerging from the sound generation means along the course of the sound-conducting channel such that the sound emerges from the loudspeaker apparatus at a second end of the sound-conducting channel, which end is in the form of a sound outlet opening, at a radiation angle which is defined by the sound outlet opening.
Owner:弗兰克·赫尔德
Light pipe, illumination optical system and image projection device
In a light pipe which allows light from a light source to be incident on the light pipe from an incident opening to be repeatedly reflected on a side wall surface of the light pipe, and to be radiated from a radiation opening, it is possible to radiate illumination light having high directivity and uniform brightness distribution thus radiating light while enhancing utilization efficiency of light. A diffraction portion is formed in a region on an incident opening side of a side wall surface of a light pipe. In the diffraction portion, light is reflected such that a reflection angle with respect to the side wall surface is larger than an incident angle with respect to the side wall surface, and a radiation angle of light radiated from a radiation opening is smaller than an incident angle of light incident on the light pipe from an incident opening.
Owner:BROTHER KOGYO KK
Light emitting panel
ActiveUS20060227545A1Uniform strengthMeasurement apparatus componentsSolid-state devicesOptoelectronicsRadiation angle
In one embodiment, a light emitting panel includes a base panel and a plurality of light emitting elements mounted to the base panel. Each of the light emitting elements produces an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60°. One or more light conditioners are positioned adjacent the base panel to receive and condition light produced by the light emitting elements.
Owner:AVAGO TECH INT SALES PTE LTD
Speaker group with flexibly adjustable radiation angle and setting method
InactiveCN102438190ASatisfy different needs of directivityFrequency/directions obtaining arrangementsDigital signal processingSound sources
The invention discloses a setting method of a speaker group with a flexibly adjustable radiation angle. Considering the wide-directivity need, a digital signal processor is provided with a group of preset filters to control the relative amplitude and phase of each sound source channel signal output; considering the narrow-directivity need, the digital signal processor is provided with another group of preset filters to control the delay time and relative amplitude of each sound source channel signal output; and to switch between the wide-directivity need and narrow-directivity need, the real-time switch is flexibly realized through an instruction in the digital signal processor. Particularly, when ten sound sources are horizontally placed, different front-end digital filter groups are set according to different needs; when 'stereo wide directivity' is required, five right-channel sound sources are fed into the digital signal processor, processed by the filters 1-5 and fed to 5 independent power amplifiers and sound sources, thus forming right-channel wide-directivity radiation; and five left-channel sound sources form left-channel wide-directivity radiation. Through the invention, narrow-directivity replay also can be realized.
Owner:NANJING LANGSHENG ACOUSTIC TECH
Apparatus and method for transmitting data using multiple antennas and beamforming
ActiveUS20130177102A1Regular maintenanceConstant beam widthSpatial transmit diversityAmplitude-modulated carrier systemsEngineeringRadiation angle
Provided are an apparatus and method for transmitting data using multiple antennas and beamforming. The apparatus of the present invention comprises: a modulation unit which performs constellation mapping on input bits to generate modulated symbols; a pre-coding unit which multiplies a pre-coding matrix and the modulated symbols to generate pre-coded symbols; and a plurality of transmitting antennas for transmitting the pre-coded symbols. According to the present invention, a beam width is maintained constant, regardless of a radiation angle, thus preventing a loss of power caused by an angular spread and preventing the generation of shadow zone at a large radiation angle.
Owner:PANTECH CORP
Planar light source device, display device, terminal device, and method for driving planar light source device
A display device having an optical waveguide and a light source are provided, and also having a louver, a transparent / scattering state switching element, and a transmissive liquid crystal display panel provided in the order indicated on the side of the light-emitting surface of the optical waveguide. The transparent / scattering state switching element switches between a state for scattering the incident light and a state for transmitting the light without scattering. The light source drive circuit causes the transparent / scattering state switching element to transfer from the transparent state to the scattering state, and when the viewing angle range of the display is switched from narrow to wide, the intensity of the light source is gradually increased in conjunction with the transition state of the transparent / scattering state switching element. By this configuration, abnormal flashing during switching of the radiation angle can be prevented in a planar light source device that is capable of switching the radiation angle range.
Owner:NEC LCD TECH CORP
Light emitting device package, light source module, backlight unit, display apparatus, television set, and illumination apparatus
ActiveUS8926114B2Reduce distanceReduce in quantitySolid-state devicesLighting device detailsElectricityTransmittance
A light source module, a backlight unit, a display apparatus, a television set, and an illumination apparatus are provided. The light source module includes: one or more light source units including a light emitting element emitting light when electricity is applied thereto; and an optical sheet disposed above the light source units and exhibiting bidirectional transmittance distribution function characteristics having first and second peaks at radiation angles less than 0° and greater than 0°.
Owner:SAMSUNG ELECTRONICS CO LTD
Location estimation system, location estimation method, and base station control device
ActiveUS20180091947A1Improve accuracyHigh positioning accuracyPosition fixationRadio transmissionEstimation methodsComputer terminal
A location estimation system for estimating a location of a wireless communication terminal, the location estimation system including first to M-th wireless communication devices and a control device, wherein i-th wireless communication device includes communication circuitry, which in operation, receives a signal transmitted from the wireless communication terminal using beams in Ni directions, and control circuitry, which in operation, calculates Ni reception qualities corresponding to the beams in the Ni directions, respectively, and wherein the control device includes control circuitry, which in operation, estimates i-th arrival direction of the signal received by the i-th wireless communication device by comparing the Ni reception qualities with the radiation angle characteristics of the beams in the Ni directions, and estimates the location of the wireless communication terminal based on the first to the M-th arrival directions estimated and locations of the first to the M-th wireless communication devices.
Owner:PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
Leaking coaxial cable
InactiveCN101895000ADoes not affect radiationSuppress resonance pointWaveguidesLeaky-waveguide antennasCoupling lossCommunication quality
Owner:CHINA XIDIAN GRP CO LTD
Display apparatus
ActiveUS20130001609A1Excellent luminous propertiesSolid-state devicesSemiconductor/solid-state device manufacturingAngle of incidenceEngineering
In a display apparatus including an organic EL element utilizing the optical interference effect, and a lens, a diameter of the lens is set such that, of light radiated from the organic EL element into a protective layer, light radiated at a larger angle than an angle, at which a light intensity distribution of the light radiated into the protective layer with respect to a radiation angle of the light takes a local minimum value, is not output to the outside of the display apparatus.
Owner:CANON KK
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