Abstract: The present invention relates to an optical filter with nanostructured layers and spectral sensors with layers of such kind. The optical filter has at least two nanostructured layers, each of which forms a transmission grating from grating wires extending parallel to each other. The grating wires of the two transmission gratings intersect each other and are positioned one on top of the other in the optical filter. An optical polarise which polarises incident optical radiation linearly parallel to the grating wires of one of the two transmission gratings is arranged over the transmission gratings. The optical filter can be produced as a bandpass filter with standard semiconductor processes without additional layers or modification of said processes.

Abstract: A ripple is suppressed in a solid-state imaging element that obtains a spectral spectrum. The solid-state imaging element includes a surface layer, a filter layer, and a photoelectric conversion layer. In the solid-state imaging element, the surface layer has a thickness exceeding a half of a coherence length of incident light. Furthermore, in the solid-state imaging element, the filter layer transmits predetermined target light of the incident light transmitted through the surface layer and reflects a rest of the incident light transmitted through the surface layer to the surface layer. Furthermore, in the solid-state imaging element, the photoelectric conversion layer photoelectrically converts the predetermined target light transmitted through the filter layer.

Abstract: Provided are a color separation element and an image sensor including the same. The color separation element includes a spacer layer; and a color separation lens array, which includes at least one nano-post arranged in the spacer layer and is configured to form a phase distribution for splitting and focusing incident light according to wavelengths, wherein periodic regions in which color separation lens arrays are repeatedly arranged are provided, and the color separation lens array is configured to interrupt phase distribution at the boundary of the periodic regions.

Abstract: Embodiments include a fiber to photonic chip coupling system including a collimating lens which collimate a light transmitted from a light source and an optical grating including a plurality of grating sections. The system also includes an optical dispersion element which separates the collimated light from the collimating lens into a plurality of light beams and direct each of the plurality of light beams to a respective section of the plurality of grating sections. Each light beam in the plurality of light beams is diffracted from the optical dispersion element at a different wavelength a light beam of the plurality of light beams is directed to a respective section of the plurality of grating sections at a respective incidence angle based on the wavelength of the light beam of the plurality of light beams to provide optimum grating coupling.

Abstract: An optical communication component includes three or more couplers, a pair of waveguides, a phase shifter, a detector, and a controller. Each of the couplers multiplexes two input optical signals and two-branch outputs the multiplexed optical signals. Each of the pair of waveguides connects between the couplers and outputs each of the optical signals two-branch output from one of the couplers to another one of the couplers. The phase shifter, included in each of the waveguides, adjusts a phase amount of each of the optical signals passing through the waveguides. The detector detects an amount of power of the optical signal that has been subjected to phase adjustment and that is two-branch output from a most downstream coupler, from among the couplers, located in the traveling direction of the optical signal. The controller controls, based on the detected amount of power, each of the phase shifters.

Abstract: An optical device may include an optical filter disposed over a first surface of one or more substrates. The optical filter may include an aperture and may be configured to pass light that is received via the aperture and that is associated with one or more wavelength ranges via the one or more substrates based on an angle of incidence of the light on the optical filter. The optical device may include one or more optical elements disposed over a second surface of the one or more substrates that are configured to direct light beams of the light that are associated with a particular wavelength range, of the one or more wavelength ranges, to a particular set of sensor elements of an optical sensor. The optical filter may include a thin film optical interference filter and the one or more optical elements may include one or more metamaterial structures.

Abstract: Systems and methods for hyperspectral and multispectral imaging are disclosed. A system includes a lens and an imaging device having a plurality of pixel sensors. A focus corrector is located within the optical path to refract at least a portion of the incoming light and change the focusing distance of specific wavelengths of light to converge at a focal plane. The focal corrector is selected based upon the imaging system to reduce an overall measure of deviation between a focal length curve for the lens and a focus position curve for pixel sensors to produce focused imaging data for a broad spectrum of light, including beyond the visible range.

Abstract: The invention relates to dispersion adjustment units for electromagnetic radiation having a spectral width, e.g., for laser pulses. The dispersion adjustment unit includes at least one dispersive element for producing angular dispersion in an angular dispersion region limited by two interaction regions of the electromagnetic radiation with the at least one dispersive element. In the angular dispersion region, individual spectral components of the electromagnetic radiation are associated with optical paths extending at an angle to one another. Furthermore, the dispersion adjustment unit includes an optical unit that is arranged in the angular dispersion region and includes an optical element that transmits the electromagnetic radiation. The optical element effects an incidence-angle-dependent parallel offset of the individual spectral components of the electromagnetic radiation with respect to the propagation of the individual spectral components before and after the optical unit.

Abstract: The invention relates optical devices, for example pixelated devices such as an optical device having a plurality of coloured pixels, each said pixel comprising a filter structure, the filter structure comprising: a first metallic layer; a dielectric layer over said first metallic layer; and a second metallic layer over said dielectric layer; wherein said second metallic layer comprises a nanostructured metallic layer having a lateral structure with features having at least one characteristic lateral dimension equal to or less than 1 ?m, and wherein said second metallic layer is structured to couple light incident on said second metallic layer into at least two absorption modes of the filter structure, one to either side of a target wavelength, such that said filter structure appears coloured at said target wavelength in reflected or transmitted light.

Abstract: A method for manufacturing a multilayer optical element is disclosed. In an embodiment the method includes providing a substrate, applying a first optical layer by applying a first layer having a dielectric first material having a first refractive index, structuring the first layer by sectionally removing the first material and filling first interspaces with a dielectric second material having a second refractive index different from the first refractive index so that the second material has at least the same height as the first material, and applying at least a second optical layer by applying a second layer having the first material, structuring the second layer by sectionally removing the first material so that the first optical layer is exposed in second interspaces between second areas with the first material and filling the second interspaces with the second material so that the second material has at least the same height as the first material.

Abstract: The present invention relates to a display apparatus and, particularly, to a display, apparatus using a semiconductor light emitting device. A display apparatus according to the present invention has a new type of partition wall structure capable of compensating an adhesive force between a wavelength conversion layer and a color filter in the display apparatus, improving structural reliability while further expanding a filling space of phosphor.

Abstract: [Solving Means] A gold color tone multilayer coat includes a metal film and a multilayer film layer. The multilayer film layer includes a plurality of dielectric films respectively having two or more different refractive indices and the dielectric films having different refractive indices are alternately laminated.

Abstract: A polysilocarb effect pigments, uncoated and coated, that exhibit among other things optical properties such as interference, shine, shimmer and sparkle. Pastes and coating including these polysilocarb effect pigments.

Abstract: An antireflection film including a low reflective index layer and a hard coating layer, the low reflective index layer including: a binder resin including a crosslinked polymer of a photopolymerizable compound and polysilsesquioxane having at least one reactive functional group substituted thereon; and inorganic fine particles dispersed in the binder resin, wherein a ratio of internal haze (Hi) to total haze (Ha) is 97% or less and a variation in color coordinate value (b*) before and after alkaline treatment is 0.7 or less.

Abstract: An antireflection film including a low reflective index layer and a hard coating layer, the low reflective index layer including: a binder resin including a crosslinked polymer of a photopolymerizable compound and polysilsesquioxane having at least one reactive functional group substituted thereon; and inorganic fine particles dispersed in the binder resin, wherein a ratio of internal haze (Hi) to total haze (Ha) is 97% or less and a variation in color coordinate value (b*) before and after alkaline treatment is 0.7 or less.

Abstract: A cloaking device includes an object-side, an image-side, a cloaked region (CR) between the object-side and the image-side. An object-side CR reflection boundary and a plurality of object-side color filters are positioned on the object side and an image-side CR reflection boundary and a plurality of image-side color filters are positioned on the image-side. The plurality of object-side color filters are spaced apart from and positioned generally parallel to the object-side CR reflection boundary, and the plurality of image-side color filters are spaced apart from and positioned generally parallel to the image-side CR reflection boundary. The plurality of object-side color filters and the plurality of image-side color filters may be co-planar and light from an object located on the object-side of the cloaking device propagates via at least two optical paths to form an image of the object on the image-side of the cloaking device.

Abstract: A device is provided for processing a light/optical radiation including at least two reflective optical elements defining a multi-pass cavity so that at least one of the optical elements reflects the light radiation at least twice, at at least two different reflection positions, and including at least one element, called a corrective element, having at least one position, called a corrective position, producing a reflection or a transmission of the optical radiation, and the surface of which is irregular so that the spatial phase profile of the corrective position has a different phase shift for several different reflection/transmission points of the corrective position.

Abstract: A first quantum dot protective film comprises a first barrier film including a silica deposition layer, and a first diffusion layer. An O/Si ratio of the silica deposition layer is 1.7 or more and 2.0 or less on an atomic ratio basis, and a refractive index of the silica deposition layer is 1.5 or more and 1.7 or less; and a reflectance of the first quantum dot protective film is 10% or more and 20% or less at each of wavelengths of 450 nm, 540 nm and 620 nm, and a transmittance of the first quantum dot protective film is 80% or more and 87% or less at each of wavelengths of 450 nm, 540 nm and 620 nm.

Abstract: The invention relates to a multi-resolution optical spectrometer that employs two output lenses of different focal length to provide a broad wavelength range, coarse resolution spectral measurement and a high resolution, lower range spectral measurement. Light dispersed by a virtual image phase array followed by a diffraction grating in two different dispersion orders may be separately focused by the two lenses upon to 2D detector array to provide the two measurements.

Abstract: The concepts, systems and methods described herein are directed towards encrypting optical signals prior to the optical signals being sensed, for example, by a sensor. An optical phased array (OPA) may be disposed between an optical chain and a sensor to encrypt an optical signal being sensed before the signal is received at the sensor. The method includes receiving an optical signal having a plurality of beams organized in a first arrangement at an optical phased array, encrypting the optical signal in the optical phased array by steering or otherwise phase shifting the plurality of beams from the first arrangement to a second arrangement, transmitting the plurality of beams in the second arrangement from the optical phased array to a sensor and sensing the encrypted optical signal having the plurality of beams in the second arrangement at the sensor.

Abstract: A plastic barrel includes an object-end portion, an image-end portion, an inner tube portion and a plurality of protrusions. The object-end portion includes an outer object-end surface, an object-end hole and an inner annular object-end surface. One side of the inner annular object-end surface is connected to the outer object-end surface and surrounds the object-end hole. The image-end portion includes an outer image-end surface, an image-end opening and an inner annular image-end surface. The inner annular image-end surface is connected to the outer image-end surface and surrounds the image-end opening. The inner tube portion connects the object-end portion and the image-end portion and includes a plurality of inclined surfaces. The protrusions are disposed at least on one of the inner annular object-end surface, the inner annular image-end surface and the inclined surfaces, wherein the protrusions are regularly arranged around the central axis of the plastic barrel.

Abstract: A spectral radiation gas detector has at least one lenslet with a circular blazed grating for diffraction of radiation to a focal plane. A detector is located at the focal plane receiving radiation passing through the at least one lenslet for detection at a predetermined diffraction order. A plurality of order filters are associated with the at least one lenslet to pass radiation at wavelengths corresponding to the predetermined diffraction order, each filter blocking a selected set of higher orders. A controller is adapted to compare intensity at pixels in the detector associated with each of the plurality of order filters and further adapted to determine a change in intensity exceeding a threshold.

Abstract: Optical systems including an image surface, a stop surface, a partial reflector disposed between the image surface and the stop surface, a reflective polarizer disposed between the stop surface and the partial reflector, and a quarter wave retarder disposed between the reflective polarizer and the partial reflector are described. The reflective polarizer is convex along two orthogonal axes. The reflective polarizer may be a thermoformed multilayer reflective polarizer.

Abstract: An optical filter includes: a first substrate; a second substrate opposed to the first substrate; a first reflecting film provided to the first substrate; a second reflecting film provided to the second substrate and opposed to the first reflecting film; a first electrode provided to the first substrate in a peripheral area of the first reflecting film; a second electrode provided to the first substrate in a peripheral area of the first electrode; a third electrode provided to the second substrate and opposed to the first electrode; and a fourth electrode provided to the second substrate and opposed to the second electrode.

Abstract: Disclosed are a rubber latex and a method of preparing the same. The rubber latex comprises a diene based rubber polymer core and a multilayer shell structure wherein an aromatic or non-aromatic polymer having an unsaturated double bond and a diene based polymer are alternatively laminated on the core. When a rubber reinforced graft copolymer is prepared through emulsion polymerization of the rubber latex, a product having excellent impact resistance and colorability may be provided.

Abstract: A reflective film includes interior layers that selectively reflect light by constructive or destructive interference, the layers extending from a first to a second zone of the film. In the first zone the layers provide a first reflective polarizer characteristic, and in a second zone the layers provide a substantially different reflective polarizer characteristic. The second zone is characterized by at least some of the layers having a reduced birefringence relative to their birefringence in the first zone. In some cases the first reflective polarizer characteristic may have a pass axis that is substantially orthogonal to that of the second reflective polarizer characteristic. The film may have substantially the same thickness in the first and second zones, or a substantially reduced thickness in the second zone relative to the first zone.

Abstract: Embodiments of the invention disclose a light-condensing sheet, a backlight and a liquid crystal display. The light-condensing sheet comprises a supporter and a plurality of flat light-condensing films provided on the supporter, and refractive indexes of the plurality of light-condensing films gradually increase from bottom to top.

Abstract: An optical-microwave-quantum transducer can include a first nanophotonic slab and a second nanophotonic slab. Each of the first and second nanophotonic slabs can include an optical region and a superconducting region. The first nanophotonic slab can include a pair of torsional beams anchored to a substrate to allow relative rotation between the first and second nanophotonic slabs about an axis of rotation. The optical-microwave-quantum transducer can include a gap between the optical region of the first and second nanophotonic slabs that forms an optical cavity in response to an optical signal, wherein the optical cavity can induce mechanical oscillation of the first nanophotonic slab about the axis of rotation. The mechanical oscillation can induce electrical modulation on a superconducting cavity coupled to the superconducting regions of the first and second nanophotonic slabs.

Abstract: An optical filter includes: a first substrate; a second substrate opposed to the first substrate; a first reflecting film provided to the first substrate; a second reflecting film provided to the second substrate and opposed to the first reflecting film; a first electrode provided to the first substrate in a peripheral area of the first reflecting film; a second electrode provided to the first substrate in a peripheral area of the first electrode; a third electrode provided to the second substrate and opposed to the first electrode; and a fourth electrode provided to the second substrate and opposed to the second electrode.

Abstract: An optical filter device includes a wavelength tunable interference filter, a lid having a second opening, a base that forms a receiving space together with the lid, a second glass member that covers the second opening and is bonded to the lid through low melting point glass, and a metal layer provided on the lid. The metal layer is provided outside a line that is separated from the outer peripheral edge of the second glass member by a predetermined distance toward a side away from the second opening and is disposed along the outer peripheral edge of the second glass member in plan view when the lid is viewed from a normal direction with respect to the opening surface of the second opening.

Abstract: An etalon (tunable interference filter) includes a fixed substrate, a movable substrate facing the fixed substrate, a fixed reflection film disposed on the fixed substrate, a movable reflection film disposed on the movable substrate and facing the fixed reflection film via a gap, a fixed electrode disposed on the fixed substrate, and a movable electrode disposed on the movable substrate and facing the fixed electrode. A movable insulating film is stacked on a surface of the movable electrode on the side of the fixed electrode, the movable electrode has a compressive stress, and the movable insulating film has a tensile stress.

Abstract: A variable wavelength interference filter includes: a first reflective film disposed on a face of a first substrate facing a second substrate; a second reflective film disposed on a face of the second substrate facing the first substrate and the first reflective film; a first electrode disposed on the face of the first substrate; and a second electrode disposed on the face of the second substrate. The second substrate includes a movable portion on which the second reflective film is disposed and a connection maintaining portion maintaining the movable portion to be movable in a substrate thickness direction, the connection maintaining portion circumscribes the movable portion and is thinner than the movable portion, and the second electrode is disposed on a portion of the second substrate that is thicker than the connection maintaining portion.

Abstract: An optical filter includes a first substrate, a second substrate, a first reflecting film disposed on a first opposed surface of the first substrate, a second reflecting film disposed on a second opposed surface of the second substrate, a first electrode provided to the first substrate at a peripheral position of the first reflecting film in a plan view, and a second electrode provided to the second substrate and opposed to the first electrode. At least one of the first opposed surface and the second opposed surface is provided with a step section, and an initial gap between the first reflecting film and the second reflecting film is smaller than an initial gap between the first electrode and the second electrode, to thereby allow control of the gap between the reflecting films with good accuracy.

Abstract: The present invention provides silk photonic crystals that can be used to enhance light-induced effects. Also disclosed are biocompatible, functionalized, all-protein inverse opals and related methods.

Abstract: An optical component including an interference filter which is less likely to generate back reflected light, where the filter is accommodated in a hollow cylindrical housing and is tilted with respect to the optical axis. The housing has front and back openings. First and second collimator lenses respectively face the front and back openings. The housing includes a filter housing section and first and second cylindrical optical path sections extending in the front-back direction respectively from the front and back openings to the filter housing section while maintaining the shape of each opening. The diameter of the opening of the first optical path section is smaller than the apparent diameter of the first collimator lens. When light is input from the front along the optical axis, light of prescribed wavelengths is output to the back. Light reflected by the filter travels toward the inside of the first optical path section.

Abstract: An optical device that has an antireflection function, the optical device including: a base; and a plurality of structural bodies, which are formed by convex portions or concave portions, arranged on a surface of the base with a fine pitch that is equal to or smaller than a wavelength of visible light, wherein the plurality of structural bodies are arranged so as to form tracks of a plurality of rows on the surface of the base and form a quasi-hexagonal lattice pattern, a tetragonal lattice pattern, or a quasi-tetragonal lattice pattern, and wherein a packing ratio of the structural bodies to the surface of the base is equal to or higher than 65%.

Abstract: A computer-based method for inspecting a wafer, including: storing, in a memory element for at least one computer, computer readable instructions; detecting a first light beam rotating in a first spiral about a first central axis; and executing, using a processor for the at least one computer, the computer readable instructions to generate, using the detected first light beam, an image including at least one shape, determine an orientation of the at least one shape or a size of the at least one shape, and calculate a depth of a defect in the wafer according to the orientation or the size.

Abstract: A colorimetric sensor includes an etalon including a first substrate, a second substrate facing the first substrate, a fixed mirror formed on a surface of the first substrate facing the second substrate, and a movable mirror formed on the second substrate so as to face the fixed mirror with a prescribed gap therebetween, a light receiving element that receives a test subject light having passed through the etalon, and a holding member holding the etalon. The etalon includes a light interference area facing the first and second substrates in a plan view as seen in a thickness direction of the substrate, and a protruding area protruding from the light interference area. The holding member holds the etalon at one end side of the protruding area opposite to the light interference area.

Abstract: Described is a method of controlling the absorption of light in a cavity, a system in which absorption is so controlled, and an interferometer embodying the underlying physical concept. Materials can be made to completely absorb incident light when the light is imposed in a specific pattern of illumination. Coherent perfect absorption, as the process is referred to, is achieved when a cavity is illuminated coherently and monochromatically by the time-reverse of the output of a lasing mode. Varying the parameters of the incident light and/or of the cavity allows the absorption of the incident light by the cavity to be controlled; enhanced or even reduced.

Abstract: In an optical assembly having a light source which provides two optically different light components with essentially planar wavefronts on an optical axis, wherein the light components differ at least in their wavelength; in the case of an objective lens which projects the two optically different light components into a projection space; and in the case of an optical component which is arranged on the optical axis and has an plane through which the wavefronts of the two light components pass and in which at least two different areas of the optical component with different dispersion behaviors n(?) abut against one another in the lateral direction with respect to the optical axis; the optical component causes phase shifts of the wavefronts of the two light components, wherein the phase shift of the wavefronts of the one light component differs by at least one quarter of the wavelength of that light component between the two different areas, and wherein the phase shift of the wavefronts of the other light compo

Abstract: Image resolution enhancement techniques are implemented using a single image an unstructured broadband illumination. By placing an axicon and a convex lens pair in an optical path of a microscope, telescope, or the object system, between the system and an image capture pickup device (e.g., a camera) the maximum resolution of the system may be increased through the formation of an interference pattern at the image capture device.

Abstract: An optical element includes: an incident surface irradiated with irradiation light; an emission surface of which at least a part faces a direction opposite to the incident surface; and a metal film having a hole to connect the incident surface and emission surface. The incident surface includes a first surface, disposed around an end of the hole on the incident surface side and having an inner edge connected to an inner surface of the hole, and a second surface disposed around the first surface forming a discontinuous portion between the second surface and an outer edge of the first surface. The distance between the inner and outer edges is determined by a wavelength of surface plasmons such that an intensity of light is increased due to interference between surface plasmons, excited at the inner edge by the irradiation light, and surface plasmons traveling from the discontinuous portion.

Abstract: An electromagnetic wave resonator comprising a body, wherein the body: has a structure extending essentially in a plane (r, ?), comprises a material in a region between limit radii ri and ro, where 0?ri<rO and ro corresponds to a radius of a convex hull () of the structure; and allows for electromagnetic wave propagation, and wherein an effective refractive index ne(r), as obtained from angularly averaging a refractive index of the material in the plane (r, ?), decreases within said region.

Abstract: An apparatus for reducing fringe interference of light created in the optical system of a laser spectroscopy system comprising an electromagnetic actuator for generating, along a laser path, physical translational vibration of an optical element of the optical system and a control device for controlling the amplitude and frequency of said vibration. The optical element is arranged on a cantilever body which is, at one end, attached to a base by a flexural pivot and, at the other free end, coupled to the electromagnetic actuator, and the control device includes a controller that controls the amplitude of the vibration and a vibration sensor attached to the cantilever body and providing the actual vibration value to the controller to improve fringe interference reduction, especially with longer wavelengths.

Abstract: The invention relates to an article (I) that in at least one region (2) consists of a transparent or translucent material, in particular of glass, wherein the article (I) comprises a dynamic moire pattern in the transparent or translucent region (2), and wherein the moire pattern comes about by superimposing at least two, preferably precisely two, laser-engraved grid structures (3), which at least in regions are visually separated from each other. The grid structures (3) are located: in different layers (4) inside the transparent or translucent region (2); or in at least one layer (4) inside and in a coating (5) of at least one surface of the transparent or translucent region (2); or in at least one first layer (4) inside the transparent or translucent region (2) and at least one second virtual layer (6) that is produced by reflecting the first layer (4) at a reflecting surface (7).

Abstract: An optoelectronic swept-frequency semiconductor laser coupled to a microfabricated optical biomolecular sensor with integrated resonator and waveguide and methods related thereto are described. Biomolecular sensors with optical resonator microfabricated with integrated waveguide operation can be in a microfluidic flow cell.

Abstract: It is an object of the present invention to provide an optical waveform shaping device of high resolution. The above-mentioned problem is solved by an optical waveform shaping device (10) comprising a branching filter (11) for dividing the light beam from a light source into light beams of each frequency, a condensing part (12) for condensing a plurality of light beams divided by the branching filter (11), a polarization separation means (13) for adjusting the polarizing planes of the light beams having passed through the condensing part (12), and a spatial light modulator (14) having a phase modulation part and an intensity modulation part where the light beams having passed through the polarizing plate (13) are incident.

Abstract: 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.

Abstract: An interference filter includes: a first substrate; a second substrate that faces one side of the first substrate and is bonded to the first substrate; a first reflection film formed on the side of the first substrate that faces the second substrate; and a second reflection film provided on the second substrate and faces the first reflection film, the first substrate including a first gap formation region in which the first reflection film is disposed and which is not contact with the second substrate, and wherein the first substrate and the second substrate are adhesively bonded to each other with the adhesive applied into the adhesive grooves with the first bonding region and the second bonding region bonded to each other.

Abstract: A multiple wavelength light emitting device is provided wherewith the resonance strength and directivity between colors can be easily adjusted for balance. This light emitting device comprises a light emission means 4 for emitting light containing wavelength components to be output, and a semi-reflecting layer group 2 wherein semi-reflecting layers 2R, 2G, and 2B that transmit some light having specific wavelengths emitted from the light emission means and reflect the remainder are stacked up in order in the direction of light advance in association with wavelengths of light to be output. Light emission regions AR, AG, and AB are determined in association with the wavelengths of light to be output.