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7612940 |
Diffractive optical element and method of fabricating diffractive optical element
The present invention is a diffractive optical element 1 in which mutually different materials make contact with one another via the same diffraction grating groove 30 . One of the mutually...
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7612930 |
Optical processing
To operate an optical device comprising an SLM with a two-dimensional array of controllable phase-modulating elements groups of individual phase-modulating elements are delineated, and control data...
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7609963 |
Apparatus to produce spectrums
A method of placing a grating material at an optimum distance from a sensor that will produce a reference spectrum on that sensor. In a preferred embodiment of the present invention, a device with...
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7589896 |
Optical pulse-width modifier structure
An optical pulse-width modifier structure includes a first diffraction grating and an optically unpowered reversing mirror. An optical path extends between the first diffraction grating and the...
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7586684 |
Solute characterization by optoelectronkinetic potentiometry in an inclined array of optical traps
A method and apparatus for selecting a specific fraction from a heterogeneous fluid-borne sample using optical gradient forces in a microfluidic or fluidic system are presented. Samples may range...
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7585546 |
Surface passivation and sealing of micro-optics devices for improved performance in harsh environments
Methods and structures for reducing and/or eliminating moisture penetration in an optical package. The optical package may include (1) a layer of inorganic material placed over the points of the...
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7583428 |
Transmissive active grating device
Provided is a transmissive active grating device that transmits light or diffracts light according to an applied voltage. The transmissive active grating device includes: an electro optical...
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7580187 |
Diffractive optical element and optical low-pass filter utilizing the same
The invention provides a diffractive optical element that can be used as a light beam splitter device, an optical low-pass filter or the like having a two-dimensionally multi-valued fine periodic...
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7576926 |
Spill light removing device
A spill light removing device includes a first blocker which is located perpendicularly to a stream route of light being irradiated from a light source and blocks a stream of light that is incident...
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7573638 |
Diffractive optical element and method of its formation
Practical diffractive optical elements are made available efficiently and at low-cost. A refractive-index-modulated diffractive optical element includes a transparent DLC (diamond-like carbon) film...
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7573019 |
Light detecting apparatus, illumination optical apparatus, exposure apparatus and exposure method
A light detecting apparatus which can be arranged even in an optical path of which converting angle is relatively large, and can accurately detect light entering along a predetermined direction in...
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7570427 |
Geometrical phase optical elements with space-variant subwavelength gratings
A space variant polarization optical element for spatially manipulating polarization-dependent geometrical phases of an incident light beam. The element comprises a substrate with a plurality of...
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7561333 |
Method for manufacturing mold
A mold manufacturing method for manufacturing a mold with which a diffractive lens array of high accuracy can be molded by the following steps: creating a set of coordinates of form points...
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7554733 |
Diffractive optical element and method for manufacturing same
A diffractive optical element includes at least a first diffractive element and a second diffractive element. The conditional expression 0.5≦D/DS≦0.9 is preferably satisfied where DS denotes...
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7553025 |
Projection type image display apparatus, and optical unit and polarization splitting unit each used for the apparatus
A polarization splitting section has a structure in that a polarization splitting layer is formed of a light reflecting grid member which is arranged in a grid-shaped pattern on an...
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7538945 |
Optical path changing module
An optical module can achieve an optical system using a transmission-type diffraction grating for bending the optical path of incident light with a specific wavelength by about 90°. A substrate of...
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7535641 |
Optically variable element comprising a partial transparent element
An optically variable element, in particular an optically variable safeguard element for safeguarding banknotes, credit cards and the like. A security product and a foil, in particular an embossing...
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7530701 |
Photographic flashlight
A light diffusion arrangement, for a photographic device having a flashlight, includes a diffuser housing, a plurality of diffracting mesh members, and a plurality of light diffusing elements. The...
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7519247 |
Wavelength selective optical switch
A wavelength selective optical switch particularly usable as a programmable N×M optical switch in a multi-wavelength communication system. The switch uses a grating that separates multi-channel...
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7499612 |
Multimode planar waveguide spectral filter
A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other...
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7499216 |
Wide field-of-view binocular device
A binocular device for transmitting an image into the eyes is provided. The binocular device comprises a first monocular device, for providing one eye with a first asymmetric field-of-view, and a...
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7483604 |
Diffractive grating element for balancing diffraction efficiency
A diffractive grating element is divided into at least two different grating regions each having different diffractive properties and arranged on opposite sides with respect to a transition point...
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7466487 |
Light diffraction method and diffraction device, diffraction grating used for them, and position encoder device
A principle of blazing that is effective even in the resonance domain. Light ( 51 ) is made incident on a diffraction grating so that specular resonance can occur in two or more light scattering...
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7463799 |
Temperature compensation of Bragg reflection gratings
A Bragg grating that has an average index of refraction that changes with temperature to compensate for variations in grating spacing caused by temperature changes.
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7449679 |
System and method for manipulating and processing materials using holographic optical trapping
A method and apparatus for manipulating particles (micro, nano, and pico) having one or more characteristics with an optical trap formed by modulating a laser beam with a Diffractive Optical...
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7444049 |
Pulse stretcher and compressor including a multi-pass Bragg grating
A chirped pulse amplification (CPA) system and method is described wherein the pulse is stretched using multiple passes through a Bragg grating or compressed using multiple passes through a Bragg...
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7443587 |
DOE-based systems and devices for producing laser beams having modified beam characteristics
Novel methods are disclosed for designing and constructing miniature optical systems and devices employing light diffractive optical elements (DOEs) for modifying the size and shape of laser beams...
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7440188 |
Diffractive optical element
A conventional diffractive optical element (DOE), which consists of repetition of a unit pattern , has an advantage of applicability of the Fast Fourier Transform algorithm to calculate...
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7440174 |
Coherent fiber diffractive optical element beam combiner
An optical beam combiner and a related method for its operation, in which multiple coherent input beams are directed onto a diffractive optical element (DOE) along directions corresponding to...
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7433290 |
Complex objective lens, optical head, optical information apparatus, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server
A complex objective lens composed of a hologram and an objective lens, capable of realizing stable and high-precision compatible reproducing/recording of a BD with a base thickness of about 0.1 mm...
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7433123 |
Optical identification element having non-waveguide photosensitive substrate with diffraction grating therein
An optical identification element (also known herein as a microbead) that is made from pieces of an optical fiber or substrate that includes an inner core or region being surrounded by an outer...
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7430076 |
Diffraction element
A diffraction element having concave/convex-like diffraction gratings in its two surfaces from which at least two separated light beams can be taken in the same direction without changing largely...
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7428100 |
Wide-angle beam steering system
A beam steering system having first diffraction gratings, each one being associated with a corresponding one of a first plurality of grating vectors disposed substantially in a first plane. The...
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7420733 |
Electrically switchable polymer-dispersed liquid crystal materials including switchable optical couplers and reconfigurable optical interconnects
A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance...
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7405879 |
Optically variable element having a variable distance-layer thickness
The invention concerns an optically variable element and a security product having such an optically variable element, a foil, in particular an embossing foil or a laminating foil having such an...
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7400449 |
System and method for reduction of image artifacts for laser projectors
A system and method is disclosed for reducing visibility of image artifacts caused by diffractive elements in a laser projector having a structured diffractive device. At least two diffracted...
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7388694 |
Method, program and system for image drawing
Laser information is prepared which indicates the irradiation interval and intensity level to be irradiated on an optical disc in advance. Then, when image drawing is indicated together with the...
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7387413 |
Lighting apparatus, lens and method of making the lens
In order to meet the legal requirements regarding color of light from a headlight, especially at the light-dark boundary and how much scattered light can occur in the dark region, a lens ( 5 ) is...
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7376305 |
Echelle gratings with low Polarization Dependent Loss (PDL) using metal coating on the reflecting facets only
An Echelle grating has alternate first ( 1 a ) and second ( 1 b ) sets of facets ( 1 ). The first set of facets ( 1 a ) is operative to reflect incident light ( 4 ) for diffraction and the second...
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7375890 |
Method of manufacturing of a diffraction grating-based optical identification element
A method of manufacturing optical identification elements that includes forming a diffraction grating in a fiber substrate along a longitudinal axis of the substrate. The grating includes a...
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7375868 |
Image scanning apparatus
An image scanning apparatus for realizing an image on a screen includes: a spatial light modulator module for diffracting light beams having different wavelengths into relevant modes; and an iris...
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7372607 |
Apparatus for reducing drops in a transmission spectrum due to inter-pixel gaps
The invention includes an apparatus for modulating an optical signal. The apparatus includes a spatial dispersion mechanism and a modulating mechanism. The spatial dispersion mechanism spatially...
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7359051 |
Multiple-wavelength spectroscopic apparatus
In a multi-wavelength spectroscopic apparatus using diffraction gratings, a first diffraction grating is a diffraction grating with diffraction efficiencies of p-polarized light and s-polarized...
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7339752 |
Image pick-up lens system
An image pick-up lens system from an object side to an image side includes an aperture stop ( 10 ), and a meniscus-shaped lens ( 20 ) having a concave surface on the object side and a convex...
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7339738 |
Nanomechanical near-field grating apparatus and acceleration sensor formed therefrom
A nanomechanical near-field grating device is disclosed which includes two sub-gratings vertically spaced by a distance less than or equal to an operating wavelength. Each sub-grating includes a...
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7339737 |
Beam multiplier that can be used as an exit-pupil expander and related system and method
A beam multiplier includes a beam-multiplying layer and an adjacent optical layer. The beam-multiplying layer is operable to generate output beamlets of light from an input beam of light, and the...
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7336420 |
Diffractive optical element, illumination system comprising the same, and method of manufacturing semiconductor device using illumination system
An illumination system including a diffractive optical element (DOE) having an uneven surface that produces an illumination shape. The DOE comprising an uneven surface that produces a multipole...
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7324282 |
Apparatus, system and method for applying optical gradient forces
The present invention relates to a system of applying optical gradient forces to form a plurality of optical traps to manipulate small particles. The system includes a light source for generating a...
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7313763 |
System for operating an astronomical observatory in real time using http
A system for operating an astronomical observatory made up of astronomical hardware, utilizing a web browser operated by a user, and a web server connected to the observatory, wherein both the...
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7307804 |
Thermally stabile GRISMs
Thermally stable GRISMs comprise a substrate and cover plate composed of a first material keeps the spatial frequency of the grating stable with temperature, and a prism composed of a second...
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