| Entries |
| Document | Title | Date |
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| 20080231938 | ENCAPSULATED SPATIAL LIGHT MODULATOR HAVING IMPROVED PERFORMANCE - Devices and methods for forming a spatial light modulator with high contrast are described. Light absorbing materials are used within a chamber that houses a spatial light modulator. The light absorbing materials absorb reflected light that is not intended for forming a part of a display image. The light absorbing material can form an aperture layer, wherein light to form the display image is transmitted through an opening in the aperture layer. An array of spatial light modulators can be within the housing and dummy spatial light modulators may be formed to enable easy alignment of the array with the opening in the aperture layer. | 09-25-2008 |
| 20080231939 | Optical Manipulation System Using a Plurality of Optical Traps - The present invention relates to an optical manipulation system ( | 09-25-2008 |
| 20080278798 | MEMs display apparatus - This invention relates to display apparatuses having an array of light modulators and a plurality of spacers distributed within the interior of the array. The display apparatus may also include a reflective aperture layer disposed on a front facing surface of a substrate included in the display apparatus. | 11-13-2008 |
| 20080316584 | Optical device - According to an aspect of the embodiment, an optical device has a first optical element and a second optical element. The first optical element for inputting wavelength multiplexed light, the wavelength multiplexed light including a plurality of light channels which is arranged on predetermined frequency interval, the first optical element outputting an angular dispersion light in parallel, the angular dispersion light being arranged positions of the light channels on different interval spaces, respectively. The second optical element for receiving the angular dispersion light from the first optical element and for changing positions in accordance with the light channels on different interval spaces into on predetermined interval space. | 12-25-2008 |
| 20090009853 | Photoconductive Metamaterials with Tunable Index of Refraction and Frequency - Materials and structures whose index of refraction can be tuned over a broad range of negative and positive values by applying above band-gap photons to a structure with a strip line element, a split ring resonator element, and a substrate, at least one of which is a photoconductive semiconductor material. Methods for switching between positive and negative values of n include applying above band-gap photons to different numbers of elements. In another embodiment, a structure includes a photoconductive semiconductor wafer, the wafer operable to receive above band-gap photons at an excitation frequency in an excitation pattern on a surface of the wafer, the excitation patterns generating an effective negative index of refraction. Methods for switching between positive and negative values of n include projecting different numbers of elements on the wafer. The resonant frequency of the structure is tuned by changing the size of the split ring resonator excitation patterns. | 01-08-2009 |
| 20090091817 | HIGH SPEED PHASE SCRAMBLING OF A COHERENT BEAM USING PLASMA - A laser beam is modulated at a very high frequency to produce uniform radiant flux densities on substrate surface processing regions during thermal processing. Beam modulation is achieved by passing the laser beam through a plasma which causes phase randomization within the laser beam. This method may be used for any application where intense, uniform illumination is desired, such as pulsed laser annealing, ablating, and wafer stepper illuminating. | 04-09-2009 |
| 20090103170 | SOLID TUNABLE MICRO OPTICAL DEVICE AND METHOD - A solid tunable micro optical device for an micro-optical system is provided. The sold tunable micro optical device includes a first annular piece, a micro-lens with a spherical surface configured on the first annular piece, and a deforming device coupled to the first annular piece for deforming the micro-lens. | 04-23-2009 |
| 20090195859 | METHOD OF SPATIALLY SEPARATING WAVELENGTHS OF MULTI-WAVELENGTH SIGNAL USING ELECTRONICALLY CONTROLLED THERMAL STRUCTURE - A thin-film interference filter structure has a generally wavelength-dependent resonant response to incident optical energy in a predetermined range of wavelengths. The thin-film interference filter structure includes a thermally tunable layer having a thermally tunable optical characteristic such that a range of wavelength-dependent resonant optical responses of the thermally tunable layer are induced by a corresponding range of thermal conditions of the thermally tunable layer. The thin-film interference filter structure is configured to (1) receive a spatially varying pattern of thermal energy at the thermally tunable layer to impart a corresponding spatially varying pattern to the thermally tunable characteristic of the thermally tunable layer, and (2) receive the incident optical energy into the thermally tunable layer and output optical energy having spatial modulation corresponding to the spatially varying pattern of the thermally tunable characteristic. | 08-06-2009 |
| 20090244690 | Light guiding film having light extraction features - A light-guiding article has a film substrate that has at least one patterned surface having a plurality of discrete surface features and an incident edge that is substantially orthogonal to the at least one patterned surface. Each surface feature in the plurality of discrete surface features extends along a length direction that is substantially parallel to the incident edge. Taken in cross-section along the length direction, each surface feature has a positively sloped portion, a substantially flat portion, and a negatively sloped portion. A first widthwise cross-section taken at a first position through the positively sloped portion has the same shape as a second widthwise cross-section taken at a second position through the negatively sloped portion. | 10-01-2009 |
| 20090303572 | SPECKLE REDUCTION IN IMAGING APPLICATIONS AND AN OPTICAL SYSTEM THEREOF - Speckle effect in imaging applications is reduced by generating additional speckle patterns on the screen such that the speckle patterns are overlapped and the overlapped speckle patterns average out on the screen to appear as a noise background to the viewers. The speckle patterns are generated by discrete optical signals of a visible frequency comb. A visible frequency comb having discrete optical signals is generated through modulation-instability processes, phase-conjugation processes, and Bragg-scattering processes using a non-linear optical material and a wavelength converter. | 12-10-2009 |
| 20100053729 | System and Method for Despeckling an Image Illuminated by a Coherent Light Source - A method and system for reducing speckle in an image produced from a coherent source of radiation is provided. The method includes coupling a source beam received from a coherent optical source into an optical fiber. A position of at least a portion of the fiber may be modulated using a ditherer. The source beam may be refracted by a lens after it is decoupled from the optical fiber, such that the source beam is aimed at a microlens diffuser. In accordance with a particular embodiment, the source beam may be projected from the microlens diffuser onto a spatial modulator. The spatial modulator may be positioned to project the source beam via an imaging lens, to a target. | 03-04-2010 |
| 20100053730 | HIGH SPEED BEAM STEERING - The use of spatial light modulators to steer light beams is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light. | 03-04-2010 |
| 20100073758 | OPTICAL GATING SYSTEM USING MOIRE EFFECT - To provide an optical gating system capable of performing single-shot, parallel, and ultrafast gating equal to or less than a subpicosecond, without depending on coherence. The optical gating system converts signal light to spatial characteristic signal light whose intensity distribution has spatial periodicity, and emits the spatial characteristic signal light to a gate region ( | 03-25-2010 |
| 20100073759 | Line-like laser beam flux irradiating apparatus - A line-like laser beam flux irradiating apparatus comprising a laser source which emits a divergent laser beam flux, a conversion lens which converts the divergent laser beam flux to a parallel laser beam flux, a first lens which forms a first line-like laser beam flux, a second lens which forms a second line-like laser beam flux intersecting the first line-like laser beam flux, a reflective optical system comprised of a first reflective surface which reflects the parallel laser beam flux toward the first lens and a second reflective surface which reflects the parallel laser beam flux toward the second lens, wherein the parallel laser beam flux is simultaneously guided to the first and second reflective surfaces so as to form a cross-wise line-like laser beam flux is formed on the same plane by the cooperation of the first line-like laser beam flux and the second line-like laser beam flux. | 03-25-2010 |
| 20100079851 | OPTICAL PARAMETRIC OSCILLATOR - The present invention relates to an optical parametric oscillator. In particular, the present invention relates to a more optimal rotating image optical parametric oscillator. More specifically, there is described an optical parametric oscillator comprising six mirrored surfaces; wherein two of the mirrored surfaces are provided by a penta prism and the sequence of mirrors is operable to provide a predetermined rotation of a beam passing therethrough. | 04-01-2010 |
| 20100091354 | Apparatus and method for 2D and 3D image switchable display - An image display apparatus and method are disclosed. The image display apparatus includes a light source unit to include at least one light source, an optical unit to generate a directional light using a light projected from the light source unit, a variable diffuser unit to control diffusion of the directional light, a pixel unit to selectively generate one of two-dimensional (2D) images and three-dimensional (3D) images to correspond to the control of the variable diffuser unit, and a vertical diffusion unit to diffuse the 3D images in a vertical direction | 04-15-2010 |
| 20100142031 | MAGNETIC CONTROL OF SURFACE STATES - A magnetic field may be applied to a plasmon path to affect plasmon propagation. | 06-10-2010 |
| 20100195189 | System and Method for Actuation of Spatial Light Modulators - A system comprises a spatial light modulator comprising a plurality of modulation elements, the spatial light modulator operable to receive an optical signal comprising one or more optical channels, wherein the elements are operable to perform an optical function on at least one of the one or more optical channels. The system further comprises two or more reset groups associated with the spatial light modulator, wherein each reset group comprises one or more elements, and wherein at least one of the one or more optical channels resides on at least two of the two or more reset groups. The system also comprises a controller operable to actuate the elements of at least one of the at least two reset groups associated with the optical channel at a different time than any one or more other reset group of the at least two reset groups. | 08-05-2010 |
| 20100220382 | Magnetic control of surface states - A magnetic field may be applied to a plasmon path to affect plasmon propagation. | 09-02-2010 |
| 20110063716 | METHOD OF MAKING OPTICAL ELEMENT AND OPTICAL ELEMENT - A method of making an optical element, the optical element including magnetic resonators that are anisotropically shaped and smaller than a wavelength of incident light, includes a first step of dispersing the magnetic resonators in a host medium, a second step of applying an external magnetic field to the host medium after the first step, and a third step of curing the host medium after the second step. | 03-17-2011 |
| 20110063717 | HIGH-EFFICIENCY DEVICE FOR FOCUSING LIGHT TO SUBWAVELENGTH DIMENSIONS - The general field of the invention is that of devices for focusing light to subwavelength dimensions including at least one focusing structure having a metal film provided with a first aperture that penetrates the film, the aperture having dimensions an order of magnitude smaller than the working wavelength of the focusing device. In the devices according to the invention, the focusing structure has at least one optical cavity placed around the aperture so that, when the structure is illuminated with a radiant flux at the working wavelength of the device, a large part of this flux is concentrated on the aperture by said cavity. Several embodiments are described using various cavities that may comprise plasmon reflectors. | 03-17-2011 |
| 20110075250 | LASER SCANNING BEAM READER - A laser scanning beam reader is provided. When a round-grating-dot matrix is in a stationary state, the laser beams passing through the round-grating-dot matrix result in line-shaped refraction beams. By the laser scanning beam reader, the motor system conventionally used for rotating the hologram disc to successively generate dot scanning beams as the line-shaped will be omitted. As a consequence, the components and configurations of the laser scanning beam reader are simplified and the cost thereof is reduced. | 03-31-2011 |
| 20110128609 | BEAM STEERING USING A THERMALLY ANISOTROPIC MEDIUM - Apparatus for steering a beam of radiation includes a thermally anisotropic element configured such that the shape of the optical element can be varied by varying the temperature of the element. The beam is reflected from or transmitted through the element in a manner such that the direction of the beam on leaving the element can be varied by the change of shape resulting from the temperature variation. | 06-02-2011 |
| 20110255146 | MANUFACTURING STRUCTURE AND PROCESS FOR COMPLIANT MECHANISMS - The invention relates, in various aspects, to systems and methods for MEMS actuated displays that can be driven at high speeds and at low voltages for improved image quality and reduced power consumption. | 10-20-2011 |
| 20120127562 | ACTIVE OPTICAL DEVICE USING PHASE CHANGE MATERIAL - An active optical device is provided. The active optical device includes an optically variable layer having a refractive index which changes according to temperature; and a temperature control unit that controls a temperature of one or more regions of the optically variable layer. | 05-24-2012 |
| 20120170108 | DUAL VIEW DISPLAY SYSTEM - A dual view display system that includes a display device and a first louver device. The display device is configured to display a first image at a display location to a first person at a first location and display a second image at the display location to a second person at a second location. The first louver device configured to substantially restrict a first field of view of the first image to the first person. The system may also include a second louver device configured to substantially restrict a second field of view of the second image to the second person. Such an arrangement restricts the fields of view so that, for example, a vehicle driver can not lean over and view something intended only for a vehicle passenger, such as a movie. | 07-05-2012 |
| 20120176665 | 3-DIMENSIONAL IMAGE DISPLAY APPARATUS - Provided is a 3-dimensional (3D) display apparatus including a light source, a beam scanner, and a beam deflector array. The beam scanner scans light emitted by the light source, and the beam deflector array includes a plurality of beam deflectors arranged in an array to reproduce a light field by changing a direction of light rays scanned by the beam scanner. | 07-12-2012 |
| 20120212799 | SPATIAL LIGHT MODULATION UNIT, ILLUMINATION OPTICAL APPARATUS, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD - An illumination optical apparatus capable of forming a pupil intensity distribution of desired shape and illuminance and, in turn, capable of realizing illumination conditions of great variety. The apparatus has a spatial light modulation unit composed of a first spatial light modulator and a second spatial light modulator arranged in an order of incidence of light, and a distribution forming optical system to form a predetermined light intensity distribution on an illumination pupil, based on a beam having traveled via the first spatial light modulator and the second spatial light modulator. The first spatial light modulator has a plurality of first optical elements which are two-dimensionally arranged and postures of which each are individually controlled. The second spatial light modulator has a plurality of second optical elements which are two-dimensionally arranged in correspondence to the first optical elements and postures of which each are individually controlled. | 08-23-2012 |
| 20130016421 | MAGNETIC CONTROL OF SURFACE STATES - A magnetic field may be applied to a plasmon path to affect plasmon propagation. | 01-17-2013 |
| 20130135708 | NON-PLANAR RING RESONATOR FOR PREVENTING EXCITATION OF BACKWARD WAVE IN A PASSIVE TRAVELING WAVE OPTICAL RESONATOR - An optical traveling-wave resonator that includes a magneto-optically active member through which an optical beam propagates on a non-planar optical propagation path circuit. The resonator further includes at least one mirror in the optical propagation path circuit and a magnetic field generator for applying a magnetic field to the magneto-optically active member such that resonant optical frequencies of normal modes corresponding to traveling waves in opposite directions are substantially different. | 05-30-2013 |
| 20130163069 | MANIPULATING AND ROUTING OPTICAL SIGNAL NARROW PATHS ON GRAPHENE AND GRAPHENE AS A PLATFORM FOR METAMATERIALS - Graphene may support electromagnetic radiation and be able to support a variety of optical devices. In general, graphene may exhibit changeability in properties such as the conductivity and the like of graphene. Graphene may comprise carbon and be of a thickness of a single atomic layer. In another embodiment, Graphene may be thicker than a single atomic layer, but may be able to exhibit changeability in the properties noted above. Disclosed herein is the guiding and manipulating of optical signals on layers of graphene to create waveguides, ribbon waveguides, beamsplitters, lenses, attenuators, mirrors, scatterers, Fourier optics, Luneburg lenses, metamaterials and other optical devices. | 06-27-2013 |
| 20130258451 | Spatio-Temporal Directional Light Modulator - A spatio-temporal directional light modulator is introduced. This directional light modulator can be used to create 3D displays, ultra-high resolution 2D displays or 2D/3D switchable displays with extended viewing angle. The spatio-temporal aspects of this novel light modulator allow it to modulate the intensity, color and direction of the light it emits within an wide viewing angle. The inherently fast modulation and wide angular coverage capabilities of this directional light modulator increase the achievable viewing angle, and directional resolution making the 3D images created by the display be more realistic or alternatively the 2D images created by the display having ultra high resolution. | 10-03-2013 |
| 20130301113 | DEFORMABLE MIRRORS AND METHODS OF MAKING THE SAME - A deformable mirror is configured to be deformed by surface-parallel actuation. In one embodiment, the deformable mirror includes a first piezoelectric active layer on a first surface of a substrate. The first piezoelectric active layer has a substantially uniform thickness across the first surface of the substrate. The mirror also includes a first electrode layer on the first piezoelectric active layer. The first electrode layer has a plurality of electrodes arranged in a first pattern and has a substantially uniform thickness across the first piezoelectric active layer. The mirror may further include a second piezoelectric layer on the first electrode layer, and a second electrode layer on the second piezoelectric layer. The electrodes of the first and second electrode layers are configured to supply a voltage to the piezoelectric active layers upon actuation to thereby locally deform the shape of the mirror to correct for optical aberrations. | 11-14-2013 |
| 20140016181 | OPTICAL DEVICES WITH SPIRAL APERIODIC STRUCTURES FOR CIRCULARLY SYMMETRIC LIGHT SCATTERING - Optical devices including deterministic aperiodic patterning using spiral arrays exhibit circular symmetry in continuous Fourier space via polarization-insensitive planar diffraction. Far-field diffractive coupling in these structures leads to the formation of scattering resonances with circular symmetry and characteristic vortex behavior carrying orbital angular momentum. Plasmonic nanoparticle arrays with aperiodic spiral geometry can be used in fabrication of optical devices that benefit from polarization insensitive, enhanced light-matter coupling on planar surfaces, such as thin-film solar cells (enhanced light absorption and efficiency), photodetectors (enhanced light emission and efficiency), optical biosensors, and polarization devices. | 01-16-2014 |
| 20140133011 | CONFOCAL INCIDENT-LIGHT SCANNING MICROSCOPE - A microscope which makes possible a spectrally-flexible excitation and detection of fluorescence in an economical manner. For this purpose, means for frequency conversion are arranged in the common beam path and a filter for excitation light is arranged in addition to the main beam splitter in the detection beam path. The frequency conversion achieves a spectral delimitation between illumination light, which is emitted by the light source, and excitation light which brings about fluorescence excitation in the specimen. Because the frequency conversion takes place in the common beam path after the main beam splitter, it is possible for both a spatial separation of illumination light, and excitation light and fluorescent light (detection light) emitted by the specimen, to be carried out in an economical manner at the main beamsplitter according to spectral bands because of the spectral difference between illumination light and excitation light. | 05-15-2014 |
| 20140177032 | Superlens component for directional display - Disclosed is an imaging directional backlight apparatus comprising a waveguide, a light source array, and a further optical element for providing large area directed illumination from localized light sources. The imaging directional backlight may comprise a stepped waveguide that may include a stepped structure, in which the steps may further include extraction features optically hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources. The further optical element may comprise a superlens comprising first and second aligned lens arrays that may be arranged to modify the output viewing windows to achieve enhanced window imaging from the directional backlight. | 06-26-2014 |
| 20140211298 | TUNABLE OPTICAL METAMATERIAL - A tunable metamaterial has a two dimensional array of resonant annular ring elements; and a plurality of voltage controllable electrical tuning elements disposed in or adjacent openings in each of said ring elements, each of said voltage controllable electrical tuning element ohmically contacting portions of only one of said ring elements. The voltage controllable electrical tuning elements may comprise highly doped semiconductor tunnel diodes, or the charge accumulation layer at the semiconductor/insulator interface of a metal-insulator-semiconductor structure, or nanoelectromechanical (NEMs) capacitors. The tunable metamaterial may be used, for example, in an optical beam steering device using the aforementioned tunable optical metamaterial in which a free-space optical beam is coupled into a receiving portion of a plane of the optical metamaterial and is steered out of a transmitter portion of the plane of the optical metamaterial in controllable azimuthal and elevational directions. The tunable metamaterial additionally has other applications. | 07-31-2014 |
| 20140300947 | DIRECTIONAL PIXEL FOR USE IN A DISPLAY SCREEN - A directional pixel for use in a display screen is disclosed. The directional pixel receives a planar lightbeam and includes a light propagating layer and a grating to scatter a portion of the planar lightbeam into a directional lightbeam having a direction and angular spread controlled by the grating. | 10-09-2014 |
| 20140313568 | HYPER-HEMISPHERICAL BEAM ANGLE MAGNIFIER - A beam director system configured to steer an optical beam over a hyper-hemispherical field of regard. In one example a beam director includes a pre-director configured to steer an optical beam over a first field of regard, and a beam angle magnifier that includes a beam directing apparatus and a field-of-regard switch, the beam angle magnifier configured to expand the first field of regard to a second field of regard larger than the first field of regard, wherein the beam directing apparatus is configured to receive the optical beam from the pre-director and to alter a pointing direction of the optical beam, and the field-of-regard switch configured to receive the optical beam from the beam directing apparatus, and to direct the optical beam into one of first and second bands of coverage within the second field of regard. The beam angle magnifier may be disposed within a rotatable housing. | 10-23-2014 |
| 20150043055 | METHOD FOR COMPENSATING FOR WAVELENGTH SHIFT IN WAVELENGTH SELECTIVE SWITCH, AND DEVICE THEREFOR - A method for compensating for a wavelength shift in a wavelength selective switch (WSS), and a device therefor. The device comprises a fixed seat ( | 02-12-2015 |
| 20150146280 | OPTICAL EFFECT LAYER - The disclosure relates to the field of graphical elements and is directed to an optical effect layer (OEL), a device and a method for producing same. The disclosure provides an optical effect that is easy to detect as such and exhibits a viewing-angle dependent apparent motion of image features over an extended length if the viewing angle with respect to the OEL changes. An OEL includes a binder material being at least partially transparent and a plurality of particles dispersed within the layer. Each particle has a non-isotropic reflectivity and may be magnetic or magnetizable. The orientation of the particles forms an orientation pattern extending over a length within an extended surface of the OEL, such that the local average of an angle between (i) a straight line along an observed longest dimension within the corresponding cross-section shape, and (ii) said first direction x varies according to a function (θ) of a position (P) along said first direction. | 05-28-2015 |
