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495 results about "Laser display" patented technology
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Color laser display apparatus having fluorescent screen scanned with modulated ultraviolet laser light
InactiveUS20020122260A1Reduce noiseImprove efficiencyLaser using scattering effectsOptical resonator shape and constructionLaser scanningGreen-light
A color laser display apparatus which contains a laser light source which emits ultraviolet laser light, a modulation unit which modulates the ultraviolet laser light, a display unit which includes a fluorescent screen, and a scanning unit which two-dimensionally scans the fluorescent screen with the ultraviolet laser light. The fluorescent screen includes, for each pixel, red fluorescent material which emits red light in response to the ultraviolet laser light, green fluorescent material which emits green light in response to the ultraviolet laser light, and blue fluorescent material which emits blue light in response to the ultraviolet laser light. The laser light source may be, for example, a semiconductor laser or a fiber laser.
Owner:FUJIFILM CORP +1
Color laser display apparatus having fluorescent screen scanned with modulated ultraviolet laser light
InactiveUS6900916B2Reduce noiseImprove efficiencyLaser using scattering effectsOptical resonator shape and constructionLaser scanningGreen-light
A color laser display apparatus which contains a laser light source which emits ultraviolet laser light, a modulation unit which modulates the ultraviolet laser light, a display unit which includes a fluorescent screen, and a scanning unit which two-dimensionally scans the fluorescent screen with the ultraviolet laser light. The fluorescent screen includes, for each pixel, red fluorescent material which emits red light in response to the ultraviolet laser light, green fluorescent material which emits green light in response to the ultraviolet laser light, and blue fluorescent material which emits blue light in response to the ultraviolet laser light. The laser light source may be, for example, a semiconductor laser or a fiber laser.
Owner:FUJIFILM CORP +1
Laser display system
InactiveUS6874893B2Eliminate speckleCosmonautic condition simulationsLaser using scattering effectsTransmittanceLength wave
Owner:LG ELECTRONICS INC
Radio frequency modulation of variable degree and automatic power control using external photodiode sensor for low-noise lasers of various wavelengths
ActiveUS20060215716A1Increase output powerWide wavelength rangeLaser detailsSemiconductor laser optical deviceLow noiseRadio frequency
A low-noise laser diode module comprises a laser diode for emitting light with a wavelength in the range from UV to IR, a drive circuit for injecting electrical current into said diode, and an automatic power control circuit for monitoring and adjusting laser output power using front-facet photodiode external to the laser assembly and a feedback loop. Said drive circuit produces injection current modulated by an RF signal with variable degrees, depending on the wavelength to be stabilized, the desired spectral bandwidths of the laser output, and / or other applications. Said RF signal can be a sine wave, a distorted sine wave, a rectified sine wave, a non-sine wave, a series of narrow pulses, or repetitive shunt. The present invention encompasses a method for producing stable, broadband, and low-coherent laser. The present invention also encompasses a method for producing stable narrowband or single longitudinal mode laser. The present invention further encompasses a compact light source applicable to DPSS lasers, fiber lasers, optical parametric oscillators, low-speckle laser display systems, and seeders, with or without nonlinear frequency conversion processes.
Owner:PAVILION INTEGRATION
Laser array display
ActiveUS20170133818A1Increasing light-output efficiencyImprove resolutionLaser detailsDiffusing elementsLaser arrayOptoelectronics
A micro-LED laser display having an array of display pixels includes a display substrate for displaying an image and an array of display pixels. Each display pixel has one or more micro-LED lasers disposed on the display substrate. Each micro-LED laser emits light within an emission angle. One or more light spreaders for increasing the emission angle of light emitted by each micro-LED laser are disposed in relation to the light spreaders and a controller individually controls the micro-LED lasers.
Owner:X DISPLAY CO TECH LTD
Laser display device
A laser display device is provided which includes: a light source emitting at least one laser beam; a light modulation unit for modulating the laser beam emitted from the light source according to an image signal; a scanning unit scanning the laser beam modulated in the light modulation unit in a main scanning direction and in a sub-scanning direction; and an image unit in which an image is formed having a phosphor layer in which excitation light is generated by a laser beam scanned by the scanning unit.
Owner:SAMSUNG ELECTRONICS CO LTD
MEMS element, GLV device, and laser display
InactiveUS7016099B2No damageFacilitate control of elastic forceTelevision system detailsLaser detailsDisplay deviceOptoelectronics
A MEMS element is constituted as a light modulation element for constituting a GLV device, and it has the same constitution as a conventional MEMS element except for differing in the structure of a bridge member of a membrane. The membrane comprises SiN film of, for example, 100 nm in thickness laminated thereon, and a combined light reflective film and membrane-side electrode composed of an Al film of 100 nm in thickness provided on the bridge member. The SiO2 film may be a SiO2 film formed by thermal oxidation of a sacrificing layer formed of polysilicon or may be a SiO2 film formed by a CVD method or a PVD method.
Owner:SONY CORP
Optical apparatus and laser display apparatus having laser beam scanner each
InactiveUS20050024704A1Beam/ray focussing/reflecting arrangementsTelevision system scanning detailsScanning mirrorLaser source
An optical apparatus is disclosed which has a scanner for scanning a predetermined area with a laser beam. The optical apparatus comprises: a laser source; a scanner having a scanning mirror for causing a laser beam generated by the laser source to scan; an angle sensor for sensing angles of the scanning mirror of the scanner; a fault detection block for determining whether the scanning mirror operates safely and normally based at least on angle information coming from the angle sensor; and a projection control block for controlling projection of the laser beam based on fault detection information coming from the fault detection block.
Owner:SONY CORP
Compact head up display with wide viewing angle
The present invention provides an optical display system and method for producing images and presenting the images for observation in combination with an observer's visual exterior view of an outside scene. The optical display system may include an image source for projecting an image, and a curved beam combination mirror (CBCM) or beam combination mirror (BCM) for reflecting the projected image toward an observer for observation. The image source may be a transmissive LCD, a reflective LCD, a digital micromirror device, a laser display, or the like. The CBCM or BCM may be positioned so that the observer, in a line of sight, may see a visual exterior view of an outside scene through the CBCM or BCM and the projected image in the CBCM or BCM.
Owner:ROCKWELL COLLINS INC
Laser Display Method and System
InactiveUS20120219021A1Television system detailsLaser detailsSpatial light modulatorDigital micromirror device
A laser display system and method that includes some or all of the following parts: an optical apparatus that includes two spatial light modulators and a laser, and switches the laser between the light modulators; two lasers that combine pulses to illuminate one spatial light modulator; controlling a laser Q-switch to stay in CW mode for variable periods of time to generate variable-amplitude pulses; and loading and resetting a digital micromirror device between pulses of light.
Owner:PROJECTION VENTURES INC
Method and device for regulating brightness of light source as well as laser projection equipment
ActiveCN101976012AImproved light outputImprove the display effectTelevision system detailsProjectorsDriving currentOptoelectronics
The invention discloses a method and device for regulating brightness of a light source as well as laser projection equipment, relating to the field of laser display, which aims to solve the problem of large influence of external environment light on projection display output in the prior art. The embodiment of the invention comprises the following steps: setting an environment light brightness standard value; collecting environment light brightness; determining a difference regulation factor of the environment light brightness, wherein the difference regulation factor is determined according to the difference absolute value of the environment light brightness and the environment light brightness standard value, and the difference regulation factor is proportional to the difference absolute value; collecting input image brightness; and multiplying the environment light brightness with the difference regulation factor to be converted into a first current, converting the input image brightness into a second current, and overlying the two currents to form a light source drive current to be output. The invention is applicable to various image output devices.
Owner:HISENSE VISUAL TECH CO LTD
Speckle reduction laser and laser display apparatus having the same
ActiveUS7489714B2Laser optical resonator constructionOptical resonator shape and constructionResonanceLaser light
Owner:SAMSUNG ELECTRONICS CO LTD
Naked eye 3D laser display device
ActiveCN105372824AImprove protectionNo visual fatigueOptical light guidesSteroscopic systemsProjection screenLaser light
The invention discloses a naked eye 3D laser display device. The naked eye 3D laser display device comprises a directional projection screen, a laser light source, a red single-color laser light source, a green single-color laser light source and a blue single-color laser light source. Light rays emitted by the three single-color laser light sources at specific angles and specific positions are incident on the directional projection screen provided with nano grating pixels, the same outgoing light fields are formed, the laser light source provides multi-view-angle image pixels, the multi-view-angle image pixels match a nano grating pixel array on the directional projection screen, and, through direct space modulation for laser projection light, colorful 3D display is achieved; and crosstalk does not exist between various view point, and the naked eye 3D laser display device has the advantage that people has no watching visual fatigue, and has the advantage of low cost.
Owner:SVG TECH GRP CO LTD +1
Laser display device and manufacturing method thereof
ActiveCN105225644ASimple structureLow costStatic indicating devicesPhotomechanical apparatusGamutImaging quality
A high-resolution laser display device. The device has a micro-cavity laser array which is formed by arrangement of a plurality of groups of RGB micro-cavity lasers, each group of RGB micro-cavity lasers consists of three micro-cavity lasers, a single light source is used as an excitation source to excite laser array to obtain RGB laser, a matched transmission type liquid crystal screen is utilized to perform color mixing on RGB pixel laser, thereby realizing gray scale control of an entire pixel, RGB micro-cavity emergent light is laser, the advantages of wide color gamut and high saturation degree of laser display are retained, and in the display device a display pixel is not projected and amplified, thereby facilitating realization of an image of high-definition image quality. In addition, since the micro-cavity lasers are mutually independent, and coherence stack of emergent light does not occur, a complex laser-speckle-eliminating device is no longer needed.
Owner:SVG TECH GRP CO LTD +1
Laser speckle optical path and laser projection light source system
The invention discloses a laser speckle optical path and a laser projection light source system, and relates to the technical field of laser display. The system comprises a diffusion assembly and a lens assembly used for collimation and spotlight, the diffusion assembly is composed of at least two diffusion parts, wherein one of the diffusion parts is a dynamic speckle device, the other diffusionparts are static speckle devices, and the movement mode of the dynamic speckle device is cyclical rotation; and the lens assembly is arranged among the diffusion parts. The laser speckle optical pathand the laser projection light source system have the advantages that better speckle and facula homogenization functions can be achieved through the combined use of the dynamic diffusion assembly andstatic diffusion assemblies; the laser beams are diverged and collimated repeatedly to greatly reduce the spatial coherence of the laser beams, thereby effectively solving the problem of speckle; thelaser speckle optical path is simple in structure and small is size, and can be integrated easily in a laser display system to make the structure of an x ray machine more compact.
Owner:SICHUAN CHANGHONG ELECTRIC CO LTD
Laser parameter measuring device
InactiveCN101101199AReal-time measurementTotal power/energy value can be measuredOptical measurementsPhotometry using reference valueDiffuse reflectionOptoelectronics
The invention relates to a laser measuring parameter device, including: the measured laser source, the reference laser source of the continuum laser which is used in launch as a reference standard, the diffuse reflectance imaging butt which is used diffusing the measured laser and the continuum laser, the image acquire device of the video frequency of the diffuse reflectance laser which is used in receiving the laser and the continuum laser, the image collection device of the gray image of the diffuse reflectance laser based on the video frequency signal of the laser and the diffuse reflectance laser, the laser spot diameter which storage continuous laser diffuse reflectance laser in the measured location, based on the gray image ratio of the laser and the diffuse reflectance laser and the laser spot diameter of the diffuse reflectance laser, get the control device of the laser spot diameter in the measured location, and laser display device which display the measured parameters. Using the invention, can be achieved the whole real-time measurement of the diameter spot beam parameters with the far field and the larger spot diameter.
Owner:中国人民解放军总参谋部第五十四研究所
Method and apparatus for controllably producing a laser display
InactiveUS7414621B2ProjectorsPicture reproducers using projection devicesColor imagePhotoluminescence
Owner:MICROVISION
Light source device and projector adopting same
InactiveCN102393598ASimple structureLow costProjectorsLighting device detailsFluorescenceEnergy consumption
The invention discloses a light source device and a projector adopting the same, which relate to the technical field of laser display and solve the problems that the existing light source device is complicated in structure, high in cost and higher in energy consumption. In the embodiment of the invention, as the light source device adopts a transmission type fluorescence plate, green rays generated by exciting green emitting phosphor by blue laser can transmit the transmission type fluorescence plate, and runs along the direction the same with the running direction of the blue laser transmitting the transmission type fluorescence plate, so that the running directions of blue rays and the green rays transmitting the transmission type fluorescence plate can be the same with that of red rays by only one dichroic mirror, thereby simplifying the structure of the light source device; and after transmitting the transmission type fluorescence plate, the blue rays can reach a emitting position by passing by the only one dichroic mirror, thereby greatly shortening an optical path and avoiding larger energy loss so as to reduce the energy consumption of the light source device.
Owner:HISENSE
Laser display system and method based on electro-optical deflection speckle suppression
ActiveCN102662294AQuality improvementImprove stabilityProjectorsNon-linear opticsSpatial light modulatorPolarizer
The invention discloses a laser display system and a laser display method based on electro-optical deflection speckle suppression. The system comprises a laser device for generating laser, a polarizer for generating linear polarization light in a specific polarization direction, an electro-optical deflector for deflecting light beams through electro-optical modulation, a long-focal-length focusing lens for focusing the light beams, a scatter plate for scattering the focused light beam and further reducing the coherence of light fields, a dodging module which consists of a micro lens array, a light flux pipe and a focusing lens and is used for collecting the scattered light fields and shaping the light, a linear space light modulator for generating an image and a projection lens component for projecting the image on a screen. The laser display system is simple, controllable, high in stability, low in loss and free of mechanical motion and has a stable structure, and high-quality laser display is realized.
Owner:YLX INC
Red light semiconductor area array light source device for laser display
InactiveCN103412406ASimple structureImprove reliabilityLaser detailsProjectorsEffect lightLight beam
The invention discloses a red light semiconductor area array light source device for laser display. The red light semiconductor area array light source device for laser display comprises a VCSEL area array and a microlens array, wherein the VCSEL area array at least comprises a plurality of VCSEL units which are used for emitting circular laser beams, and the microlens array is formed by a plurality of microlens and used for performing collimation rounding on the laser beams output by the VCSEL area array and outputting the laser beams. The light source device can reduce optical elements in a projection display optical path, shorten the length of a lighting optical path, and improve the optical energy utilization rate. In addition, the VCSEL area array can reduce interference between VCSEL lasers and weaken laser speckles, and therefore projection display quality is improved. According to the red light semiconductor area array light source device, the area array light source packaging technology and VCSEL are adopted, a two-dimensional array is easy to integrate, and the defect that power transmitted by a single tube is poor can be overcome. The VCSEL is available in wafer test, reduces cost greatly and is easy in modularization and packaging.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Laser display apparatus
InactiveUS20080049284A1Reduces speckle patternSimple optical structureTelevision system detailsStatic indicating devicesLight beamOptoelectronics
A laser display apparatus which reduces speckles, includes: a laser illuminating system emitting a laser beam; and a speckle reducing unit including a birefringent device that separates the laser beam emitted from the laser illuminating system into a plurality of partial beams, and a plurality of spots formed by the partial beams, separated by the speckle reducing unit, on a screen overlap with each other with a slight displacement so that the speckle pattern is reduced.
Owner:SAMSUNG ELECTRONICS CO LTD
Laser module allowing direct light modulation and laser display employing the same
ActiveUS20080031289A1Laser detailsSemiconductor laser optical deviceExternal cavity laserDisplay device
Provided are a laser module allowing direct light modulation and a laser display employing the laser module. The laser module may include a semiconductor chip, a Volume Bragg Grating (VBG), a pump laser and a non-linear optical element. The semiconductor chip includes an active layer generating light of primary wavelength and a reflective layer providing the generated light to a cavity and reflecting the light within the cavity. The VBG may output light repeatedly reflected between the reflective layer and the VBG. The non-linear optical element disposed outside a cavity between the semiconductor chip and the VBG may convert the light of a first wavelength emitted from the active layer into light of a second wavelength different from the first wavelength. The laser module having the above-mentioned construction uses an external cavity laser and a non-linear optical element to achieve direct light modulation.
Owner:SAMSUNG ELECTRONICS CO LTD
Laser device, laser display apparatus, laser radiating apparatus, and nonlinear optical element
InactiveUS20100220384A1Reduce speckle noiseImprove conversion efficiencyOptical resonator shape and constructionLight demodulationLength waveNonlinear optical
A laser device, includes: a fundamental wave generating portion configured to generate a plurality of fundamental waves having wavelengths which are different from each other in at least one set thereof, the fundamental wave generating portion having a semiconductor laser having a plurality of luminous points, and a Bragg reflection structure; and a nonlinear optical element in which a poling structure adapted to pseudophase matching for the wavelengths of the plurality of fundamental waves emitted from the fundamental wave generating portion, respectively, is formed variatively along a propagating direction of the plurality of fundamental waves.
Owner:SONY CORP
Audience scanning laser display projector and associated methods
An apparatus and method for an audience scanning laser display projector includes a laser projector capable of generating a laser beam output having a predetermined beam path, scan area and beam wavelength. A beam position sensor is associated with said laser projector. A camera capable of capturing an image of the audience using light of a wavelength other than the beam wavelength, is disposed relative to said laser projector so that the captured image includes the area scanned by the laser beam. A processor is operably connected with said laser projector, said beam position sensor and said camera, said processor generating a table corresponding to the camera image of the audience, and containing software capable of identifying location of faces in the audience image and comparing face locations with beam position so as to signal said laser projector to attenuate the beam when scanning over a face location.
Owner:MURPHY
Laser homogenizing coupler device for laser display
The present invention discloses a laser equalization coupling device for laser display, and includes a trichromatic laser source and a focusing device. The trichromatic laser source comprises at least one red laser device, at least one green laser device, and at least one blue laser device. The focusing device includes a plurality of coupling optical fibers and a bushing. All coupling optical fibers correspond to the laser devices one-to-one. The laser emitted by the laser device couples and enters into the corresponding coupling optical fiber, and all output ends of the coupling optical fibers are packed in the bushing to form a combined beam of output laser. The present invention can meet the brightness requirement of the big-screen laser display, can reduce the volume of the whole coupling device, and can eliminate the beam speckle.
Owner:ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
Electrostatic drive type MEMS device and manufacturing method thereof, optical MEMS device, light modulation device, GLV device, and laser display
InactiveUS7116462B2Improve performanceImprove flatnessDecorative surface effectsDiffraction gratingsElectricityDisplay device
An electrostatic drive type MEMS device and a manufacturing method thereof are provided, in which flattening the surface of a driving side electrode, improving performance, and furthering the improvements of the degree of freedom of designing in the manufacturing process are implemented. In addition, a GLV device using this MEMS device is provided, and further a laser display using this GLV device is also provided. The electrostatic drive type MEMS device includes a substrate side electrode and a beam having a driving side electrode driven by electrostatic attraction force or electrostatic repulsion force that acts between the substrate side electrode and driving side electrode, in which the substrate side electrode is formed of an impurities-doped conductive semiconductor region in a semiconductor substrate.
Owner:SONY CORP
Radio frequency modulation of variable degree and automatic power control using external photodiode sensor for low-noise lasers of various wavelengths
ActiveUS7468998B2Laser detailsSemiconductor laser optical deviceAutomatic controlAutomatic gain control
Owner:PAVILION INTEGRATION CORP
Coherent light source and control method thereof, and display unit and laser display using them
InactiveUS20060209913A1High harmonic outputLow refractive indexLaser detailsSemiconductor laser optical deviceLaser displayLight source
In a display device that displays a video by scanning coherent light across a screen, modulation at high speeds and gradation are necessary for a coherent light source. An oscillation wavelength of a semiconductor laser outputting the fundamental wave is changed at high speeds through the plasma effect induced by applying a pulse current to the coherent light source. A change of the wavelength causes the output of a higher harmonic generated in a light wavelength conversion element to change, and gradation is produced using such a change.
Owner:PANASONIC CORP
Acousto-optic deflector with phase-controlled transducer array
InactiveCN102566193AReduce tracking angle rangeHigh bandwidthNon-linear opticsSonificationPhase difference
The invention particularly relates to an acousto-optic deflector with a phase-controlled transducer array. A plurality of transducer electrodes are arranged on a piezoelectric layer on the surface of acousto-optic crystals, and are driven by an independent radio frequency (RF) signal source; the phase difference between RF signals is adjustable; and the acousto-optic deflector works in an abnormal Bragg diffraction mode and can increase the bandwidth by adopting slow-mode incident light and tangent conditions. The range of the tracking angle desired for ultrasonic tracking can be reduced by adopting the tangent conditions of abnormal Bragg diffraction, thereby further increasing length of a single transducer electrode, improving acousto-optic interaction length, or reducing the number of desired transducer electrodes, and reducing system complexity. The acousto-optic deflector can be widely used in the application fields of microscopic imaging, laser display and record system, laser processing, laser measurement and control, and so on.
Owner:HUAZHONG UNIV OF SCI & TECH
Laser module allowing direct light modulation and laser display employing the same
Provided are a laser module allowing direct light modulation and a laser display employing the laser module. The laser module may include a semiconductor chip, a Volume Bragg Grating (VBG), a pump laser and a non-linear optical element. The semiconductor chip includes an active layer generating light of primary wavelength and a reflective layer providing the generated light to a cavity and reflecting the light within the cavity. The VBG may output light repeatedly reflected between the reflective layer and the VBG. The non-linear optical element disposed outside a cavity between the semiconductor chip and the VBG may convert the light of a first wavelength emitted from the active layer into light of a second wavelength different from the first wavelength. The laser module having the above-mentioned construction uses an external cavity laser and a non-linear optical element to achieve direct light modulation.
Owner:SAMSUNG ELECTRONICS CO LTD
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