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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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...