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Refraction patents

      

This page is updated frequently with new Refraction-related patent applications.




 Vcsel structure patent thumbnailVcsel structure
The invention relates to a vcsel structure based on a novel grating reflector. The grating reflector (1) comprises a grating layer (20) with a contiguous core grating region having a grating structure, wherein an index of refraction of high-index sections (21) of the grating structure is at least 2.5, and wherein an index of refraction of low-index sections (22) of the grating structure is less than 2.
Danmarks Tekniske Universitet


 Local seal for encapsulation of electro-optical element on a flexible substrate patent thumbnailLocal seal for encapsulation of electro-optical element on a flexible substrate
An electroluminescent display or lighting product incorporates a panel comprising a collection of distinct light-emitting elements formed on a substrate. A plurality of distinct local seals are formed below respective individual light-emitting elements or groups of light-emitting elements.
Global Oled Technology Llc


 Inks for 3d printing gradient refractive index (grin) optical components patent thumbnailInks for 3d printing gradient refractive index (grin) optical components
Optical inks suitable for 3d printing fabrication of gradient refractive index (grin) optical components are composed a monomer matrix material doped with ligand-functionalized nanoparticles, wherein the monomer has a viscosity less than 20 cpoise and is uv curable to form a solid polymer. The matrix material doped with the ligand-functionalized nanoparticles has a transmittance of at least 90% in a predetermined optical wavelength range, wherein the ligand functionalized nanoparticles have a size less than 100 nm, are loaded in the monomer matrix material at a volume percent of at least 2%, and alter an index of refraction of the monomer matrix by at least 0.02.
Vadient Optics, Llc.


 Photorefraction ocular screening device and methods patent thumbnailPhotorefraction ocular screening device and methods
A photorefraction ocular screening device for assessing vision and corresponding disorders associated with the human ocular system is provided. More specifically, the present invention provides for a photorefraction ocular screening device employing advanced methods of pupil detection and refractive error analysis.
Welch Allyn, Inc.


 Computerized refraction and astigmatism determination patent thumbnailComputerized refraction and astigmatism determination
The present disclosure relates generally to systems and methods for determining the refractive error of a patient, more particularly determining the patient's refractive error by using a computerized screen, and providing a prescription for the patient's preferred type of corrective lenses. In a general embodiment, the present disclosure provides a method for determining a corrective lenses prescription of a patient.
Opternative, Inc.


 Phoropter, and  measuring refraction using a phoroptor of said type patent thumbnailPhoropter, and measuring refraction using a phoroptor of said type
A refractor (100) includes: an enclosure having a front face containing a first optical window and a back face containing a second optical window aligned with the first optical window along an optical axis of observation; and at least one vision compensating device making it possible to observe along the optical axis of observation. The vision compensating device includes, between the first window and the second window, a first optical element having a spherical power along the optical axis, the spherical power being variable.
Essilor International (compagnie Generale D'optique)


 Surface emitting laser, surface emitting laser element and atomic oscillator patent thumbnailSurface emitting laser, surface emitting laser element and atomic oscillator
A surface emitting laser for emitting light with a wavelength λ includes a first reflection mirror provided on a semiconductor substrate; a resonator region including an active layer provided on the first reflection mirror; a second reflection mirror, including plural low refraction index layers and plural high refraction index layers, provided on the resonator region; a contact layer provided on the second reflection mirror; a third reflection mirror provided on the contact layer; and an electric current narrowing layer provided between the active layer and the second reflection mirror or in the second reflection mirror. Optical lengths of at least one of thicknesses of the low refraction index layers and the high refraction index layers formed between the electric current narrowing layer and the contact layer are (2n+1)×λ/4 (n=1, 2, .
Ricoh Company, Ltd.


 Light emitting diode patent thumbnailLight emitting diode
Disclosed herein is a light emitting diode. The light emitting diode includes: a light emitting diode chip; a first molding portion covering the light emitting diode chip and having a first index of refraction; a second molding portion covering the first molding portion and having a second index of refraction, wherein the second index of refraction is not higher than the first index of refraction.
Seoul Simiconductor Co., Ltd.


 Interferometric ellipsometry and method using conical refraction patent thumbnailInterferometric ellipsometry and method using conical refraction
An apparatus and method for determining optical properties of an object (50) includes a light source (10) and an optical system for illuminating at least one point of the object with light from the light source, and collecting light reflected from the object. A biaxial birefringent crystal (30) intercepts a beam of light reflected from the object and propagates the beam along an optical axis of the crystal and transforms the beam of reflected light to a ring of light having a periphery, each point of which has a different polarization plane.
Adom, Advanced Optical Technologies Ltd


 Refraction lens and plate-form structure which has multiple refraction lenses extending therethrough patent thumbnailRefraction lens and plate-form structure which has multiple refraction lenses extending therethrough
A refraction lens is integrally formed by transparent material including glass and acrylic. The refraction lens includes a body, wherein an incidence face and a light emitting face respectively formed on two opposite sides of the body.

Optical security component with reflective effect, production of such a component and secure document provided with such a component

According to one aspect, the invention relates to an optical security component intended for being observed under direct reflection. The component comprises a structure engraved on a layer of a material having a refraction index n2, a thin layer of a dielectric material having a refraction index n1 other than n2, deposited on the structure, and a layer of a material having a refraction index n0 other than n1, encapsulating the coated structure of the thin layer.
Surys

Intraocular lens systems and related methods

Embodiments disclosed herein are directed to intraocular lens systems having a plurality of materials therein, with at least some of the materials having a diffraction pattern therein and an electrically-modifiable index of refraction collectively configured to selectively alter the focal length of the intraocular lens system. Methods of modifying a focal length of an intraocular lens system are also disclosed..
Elwha Llc

Adaptable operating frequency of a variable focal length lens in an adjustable magnification optical system

An imaging system is provided for a precision machine vision inspection or metrology system. The imaging system optical path includes a variable magnification lens portion and a variable focal length lens portion.
Mitutoyo Corporation

Photoelectric conversion device and producing photoelectric conversion device

A photoelectric conversion device according to the present invention has a plurality of photoreceiving portions provided in a substrate, an interlayer film overlying the photoreceiving portion, a large refraction index region which is provided so as to correspond to the photoreceiving portion and has a higher refractive index than the interlayer film, and a layer which is provided in between the photoreceiving portion and the large refraction index region, and has a lower etching rate than the interlayer film, wherein the layer of the lower etching rate is formed so as to cover at least the whole surface of the photoreceiving portion. In addition, the layer of the lower etching rate has a refractive index in between the refractive indices of the large refraction index region and the substrate.
Canon Kabushiki Kaisha

Method and device for determining characteristic properties of a transparent particle

The invention relates to a method for determining the size d of a transparent particle, according to which method the particle is illuminated with light from a light source, a radiation detector measures a time-resolved intensity profile of light of the light source scattered by the particle, a reflection peak (10) and a refraction peak are determined in the intensity profile and the size d of the particle is determined based on a time difference between the reflection peak (10) and the refraction peak. The method according to the invention is characterized in that the time-resolved intensity profile is measured at a definable scattering angle θs, a first second-order refraction peak (11) and a second second-order refraction peak (12) having a mode different from that of the first refraction peak (11) being determined, a characteristic variable γ being determined as the ratio of a first time difference Δt01 between the reflection peak (10) and the first refraction peak (11) and of a second time difference Δt02 between the reflection peak (10) and the second refraction peak (11), and the size of only those particles being determined for which the characteristic variable γ corresponds to a definable value..
Technische Universitaet Darmstadt

Passive method to measure strength of turbulence

Disclosed is a method to passively measure and calculate the strength of turbulence via the index of refraction structure constant cn2 from video imagery gathered by an imaging device, such as a video camera. Processing may occur with any type computing device utilizing a processor executing machine executable code stored on memory.
National Security Technologies, Llc

Light-emitting diode lamp

A light-emitting diode (led) lamp includes and optically-transparent lens and an led. The lens includes a parabolic section defined about an axis and having a focus.
Vitrulux Limited Liability Company

Capsular membrane implants to increase accommodative amplitude

A support is coupled to the lens capsule to increase accommodation. The support may be adjustable, such that patient refraction and accommodation can be adjusted following surgery.
Abbott Medical Optics Inc.

Footwear with refractive internal illumination

Twice-refracted light, produced by emitting light for refraction from a translucent body, reflection between said translucent body and an opaque section of an upper, and refraction again by the upper, is applied to footwear to create an enhanced internal illumination effect. To create this, at least one light source is connected to a power source and installed into a footwear.

Asymmetric optical waveguide grating resonators & dbr lasers

Monolithic asymmetric optical waveguide grating resonators including an asymmetric resonant grating are disposed in a waveguide. A first grating strength is provided along a first grating length, and a second grating strength, higher than the first grating strength, is provided along a second grating length.

Birefringent ocular for augmented reality imaging

A display apparatus has a birefringent ocular having a first index of refraction for light having a first polarization axis and a second index of refraction, lower than the first index by at least 0.1, for light having a second polarization axis that is orthogonal to the first polarization axis, wherein the birefringent ocular defines an eye box for a viewer. An image source emits image-bearing light having the first polarization axis.

Light guide apparatus and fabrication method thereof

A light guide apparatus that can redirect light impinging on the apparatus over a wide range of incident angles and can concentrate light without using a tracking system and methods for fabrication. This apparatus uses conditions of total internal reflection and refraction near the critical angle for total internal reflection (near tir) in order to trap light within the apparatus..
Agira, Inc.

Systems and methods for identifying s-wave refractions utilizing supervirtual refraction interferometry

A system and method for identifying s-wave refractions using supervirtual refraction interferometry is disclosed. The method includes receiving a seismic data set from data generated by a plurality of receivers, and calculating crosscorrelations of pairs of common receiver gathers from the seismic data set for each of the receivers.
Cgg Services Sa

Organic light emitting diode display apparatus

Disclosed is an organic light emitting diode display apparatus including: a substrate; an organic light emitting diode disposed on the substrate; and an encapsulation layer encapsulating the organic light emitting diode. The encapsulation layer has a structure in which two or more inorganic layers and one or more organic layers are alternately stacked one above another, each of the inorganic layers has a thickness of about 40 nm to about 1000 nm and an index of refraction of about 1.41 to about 2.0, each of the organic layers has a thickness of about 0.2 μm to about 15 μm and an index of refraction of about 1.4 to about 1.65, and the organic layers are formed of an encapsulating composition.
Samsung Sdi Co., Ltd.

Light guide apparatus and fabrication method thereof

A light guide apparatus that can redirect light impinging on the apparatus over a wide range of incident angles and can concentrate light without using a tracking system and methods for fabrication. This apparatus uses conditions of total internal reflection and refraction near the critical angle for total internal reflection (near tir) in order to trap light within the apparatus..
Agira, Inc.

Illuminated keyboard

A light guide is provided for illuminating innumerable constructions, but which is ideally suited for illuminating the keys of a keyboard. The light guide includes a translucent planar plate having a top, a bottom and sides.

Image display device

An image display device, includes: a projection optical system projecting, at infinity, image light corresponding to an arbitrary image; and a first propagation optical system. The first propagation optical system includes: a first diffractive element diffracting the image light emitted from the projection optical system; a first light guide portion formed like a plate having a first plane and a second plane parallel and opposing to each other, the first light guide portion propagating in the first direction the image light deflected by the first diffractive element, between the first plane and the second plane while causing the image light to be repeatedly reflected therebetween; and a first triangular prism array deflecting through reflection or refraction, in a direction substantially perpendicular to the first plane, part of the image light propagating through the first light guide portion..
Olympus Corporation

Tunable acoustic gradient index of refraction lens and system

A tunable acoustic gradient index of refraction (tag) lens and system are provided that permit, in one aspect, dynamic selection of the lens output, including dynamic focusing and imaging. The system may include a tag lens and at least one of a source and a detector of electromagnetic radiation.

Optical semiconductor device

An optical semiconductor device in which a first optical waveguide 407 comprising a silicon-containing amorphous semiconductor layer and a second optical waveguide 409 containing a silicon-containing i-type semiconductor layer as a constituent element are disposed in different layers in a range in which optical interaction can occur. An electro-optical modulator 409 having a pin junction structure comprising a p-type semiconductor layer 403, an i-type semiconductor layer 404, and an n-type semiconductor layer 405 is provided to at least a portion of the second optical waveguide 409, and the index of refraction of the second optical waveguide is varied by the electro-optical modulator, whereby light waves propagated through the first optical waveguide are modulated..
National Institute Of Advanced Industrial Science And Technology

Contact lens for presbyopia

The present, invention relates to a contact lens for presbyopia including: a lens foody; long distance portions and short distance portions arranged on the lens body, the long distance portions having refraction for long distance and the short distance portions having refraction for short distance, wherein the lens body is divided into concentric circles as well as in top/bottom and left/right directions and the long distance portions and the short distance portions are arranged repeatedly and alternately on the neighboring divisions on the lens body.. .

Chemical nano-identification of a sample using normalized near-field spectroscopy

Apparatus and method for nano-identification a sample by measuring, with the use of evanescent waves, optical spectra of near-field interaction between the sample and optical nanoantenna oscillating at nano-distance above the sample and discriminating background backscattered radiation not sensitive to such near-field interaction. Discrimination may be effectuated by optical data acquisition at periodically repeated moments of nanoantenna oscillation without knowledge of distance separating nanoantenna and sample.
Bruker Nano, Inc.

Scintillation array apparatus and use thereof

A scintillation material is longitudinally packaged in a circumferentially surrounding sheath, where the sheath has a lower index of refraction than the scintillation material, to form a scintillation optic or scintillation fiber optic. The scintillation material yields secondary photons upon passage of a charged particle beam, such as a positively charged residual particle beam having transmitted through a sample.

Nanophotonic hyperspectral/lightfield superpixel imager

Systems and methods are described that relate to an optical system including an image sensor optically-coupled to at least one nanophotonic element. The image sensor may include a plurality of superpixels.
Verily Life Sciences Llc

Method of forming an infrared filter associated with an image sensor

An image sensor having a portion including interconnection levels formed on a semiconductor substrate covered with a first layer of a dielectric material, including conductive tracks separated from one another by insulating layers interconnected by vias crossing the insulating layers, and an infrared bandpass filter comprising filter levels adjacent to the interconnection levels formed by an alternation of second layers of the dielectric material and of silicon layers, the refraction index of the dielectric material being smaller than 2.5 at the maximum transmission wavelength of the filter, one of the second dielectric layers of each filter level being identical to the insulating layer of the adjacent interconnection level.. .
Commissariat à I'Énergie Atomique Et Aux Énergies Alternatives

Led ceiling lamp

Disclosed is an led ceiling lamp, comprising a base, a lampshade, an led assembly and a protective cover, wherein the lampshade is permanently connected with the base to form an enclosed space where the led assembly and the protective cover are accommodated; the led assembly includes a lamp panel and several led lamp beads arranged on the lamp panel, and the side of the lamp panel away from the led lamp beads is fixed on the base; the protective cover includes a cover body, arranged on the lamp panel and connected with the base, and several lenses arranged in the cover body with one lens shade on each led lamp bead. For the led ceiling lamp above, refraction of the light from the led lamp beads by the lens shades provides better light distribution and uniform luminance, making the light more uniform and softer and producing fewer dark regions..
Unilumin Group Co., Ltd.

Lens with controlled light refraction

A lens for distribution of light from a light emitter having an emitter axis. The lens including an outer surface receiving light from the inner surface which defines an inner cavity and includes an axial inner-surface portion of a conical shape formed by a substantially cross-sectionally linear inner region extending outwardly from positions at the emitter axis toward an open end of the inner cavity.
Cree, Inc.

Optometric apparatus

According to one embodiment, an optometric apparatus includes a movement mechanism system and left and right optometry units. The movement mechanism system is suspended from an arm.
Topcon Corporation

Organic light-emitting display device

An organic light-emitting display device that includes a substrate, first and second electrodes facing each other on the substrate, an organic light-emitting layer between the first and second electrodes, a thin-film encapsulation (tfe) film on the second electrode, a reflection reduction layer on the tfe film, and a refraction adjustment layer between the reflection reduction layer and the organic light-emitting layer.. .
Samsung Display Co., Ltd.

Solid-state image-capturing device and production method thereof, and electronic appliance

A high degree of phase difference detection accuracy can be obtained using a phase difference pixel (2b) with a simpler configuration. A solid-state image-capturing device includes a pixel array unit in fig.
Sony Corporation

Optical lens

An optical lens is provided. The optical lens having an optical axis comprises, in order from an object side to an image-forming side, a first lens having negative refraction power, a second lens having positive refraction power, a third lens having positive refraction power, a fourth lens having negative refraction power, a fifth lens having positive refraction power, and a sixth lens having refraction power.
h13/h13

Method for modifying power of light adjustable lens

A method for adjusting a light adjustable lens in an optical system includes providing a light adjustable lens in an optical system; providing an ultraviolet light source to generate an ultraviolet light; and irradiating the generated ultraviolet light with a light delivery system onto the light adjustable lens with a center wavelength and with a spatial irradiance profile to change a dioptric power of the light adjustable lens by changing a refraction of the light adjustable lens in a refraction-change zone, thereby causing a wavefront sag, defined as half of a product of the change of the dioptric power and the square of a radius of the refraction-change zone, to be within 10% of its maximum over an ultraviolet spectrum.. .
Calhoun Vision, Inc.

Ceramic wavelength converter having a high reflectivity reflector

There is herein described a ceramic wavelength converter having a high reflectivity reflector. The ceramic wavelength converter is capable of converting a primary light into a secondary light and the reflector comprises a reflective metal layer and a dielectric buffer layer between the ceramic wavelength converter and the reflective metal layer.
Osram Sylvania Inc.

Treatment system for liquids and interior surfaces of a fixture

A disinfecting device including a conduit configured to carry a flowing liquid. The conduit has a first index of refraction.
Kavo Dental Technologies, Llc

Optical amplifier based on electro-optic effect for electrical signals and its application as semiconductor radiation detector preamplifier

An amplifier for amplification of an electrical signal comprises an electro-optic (eo) medium for receiving the electrical signal, wherein applying the electrical signal to the eo medium causes a change to an effective index of refraction, a device configured for measuring a light phase change for measuring the change to the effective index of refraction, and a photodetector configured to convert the change to the effective index of refraction into an amplified electrical current output signal.. .

Organic light emitting diode display

An organic light emitting diode display includes: a substrate; an organic light emitting element on the substrate; and a capping layer on the organic light emitting element and including a high refraction layer formed of an inorganic material having a refractive index which is equal to or greater than about 1.7 and equal to or less than about 6.0, wherein the inorganic material includes at least one selected from cui, thallium iodide (tli), agi, cdi2, hgi2, sni2, pbi2, bii3, zni2, mni2, fei2, coi2, nii2, aluminium iodide (ali3), thorium(iv) iodide (thi4), uranium triiodide (ui3), mgs, mgse, mgte, cas, case, cate, srs, srse, srte, bas, base, bate, sns, pbs, cds, cas, zns, znte, pbte, cdte, snse, pbse, cdse, cuo, cu2o, wo3, moo3, sno2, nb2o5, ag2o, cdo, coo, pr2o3, bi2o3, fe2o3, alas, gaas, inas, gap, inp, alp, alsb, gasb, and insb.. .
Samsung Display Co., Ltd.

Microstructured optical fibre with selectively enlarged spaces of reduced refraction index, especially for the generation of nonlinear effects and stress measurements

Microstructured optical fibre with selectively enlarged spaces of reduced refraction index, especially for the generation of non-linear effects and stress measurements with a ring configuration of spaces, located around a cladded core, where the spaces demonstrate cross-section shape close to circle and decreased diffraction index, especially for the generation of non-linear effects and stress measurements, made of glass, preferably of silica glass or polymer and are located in nodes of hexagonal lattice with distances between the lattice nodes equal to the lattice constant, in which, around a single-mode core, there are, at least two rings with spaces of decreased diffraction index, filled with gas or fluid or a polymer, where the diameter of every-second space with decreased diffraction index in, at least, one ring, is enlarged to be lower from the double lattice constant, while the diameters d of all the enlarged spaces with decreased diffraction index are similar in size and the diameters d of non enlarged spaces with decreased diffraction index are close in size and lower from the lattice constant and the ratio of the diameter d of non enlarged space to the lattice constant is within the range from 0.30 to 0.45.. .
Polskie Centrum Fotoniki I SwiatlowodÓw

Light refraction imaging to measure liquid volume

A method to measure the volume of fluid present that relies on the pattern of light refraction as it passes though an airway surface liquid (asl) meniscus. The method comprises allowing epithelial cells to grow on a membrane in a well so as to form a fluid meniscus about the perimeter of the well.
University Of Pittsburgh - Of The Commonwealth System Of Higher Education

Uv-protective film for oleds

The present invention concerns a plastic foil, comprising at least one first layer of a plastic composition containing a first transparent plastic, as well as 0.01 to 15 wt. % transparent polymer diffusion particles, related to the total mass of the first layer, and at least one second layer of a plastic composition, containing a second transparent plastic and 0.01 to 5 wt.
Osram Oled Gmbh

Microstructured multicore optical fibre (mmof), a device and the fabrication a device for independent addressing of the cores of microstructured multicore optical fibre

Microstructured multicore optical fibre with a microstructure area, in which, at least two basic cells are embedded, where each of them contains a core, preferably made of glass, specifically including doped silica glass or polymer, together with the surrounding it longitudinal areas with lower refraction index vs. That of the cladding, which areas may adopt the shape of holes, filled with gas, in particular with the air or a fluid or a polymer or spaces of another glass with doping allowing to reduce refractive index (further referred to as holes), embedded in a matrix of glass, in particular of silica glass or polymer.
Inphotec Sp. O. O.

Photonic hybrid receive antenna

Methods and systems for determining true time delay from each receiving element of an ‘active electronically scanned array’ (aesa) or a phased array antenna. Embodiments of the invention can include electromagnetic em elements, optical waveguides, and wavelength selective fgbs are collectively configured as a plurality of dual purpose elements that couples an em field and uses an induced voltage to change an index of refraction of the optical waveguide's electro-optic (eo) material, where the eo material will also function as a dielectric in an antenna element, where the signals comprising optical signals propagate through em element acting as phase delay elements, where the measuring system compares the reflected signals with a reference signal with no phase delay to determine said signals phase delay..
The United States Of America As Represented By The Secretary Of The Navy

Lamp or display comprising at least one light panel on a carrier plate

The present invention relates to a lamp or a display, comprising at least one light panel (10), in particular an oled panel, lying on or against an at least partially light-permeable carrier plate (13) in a planar manner, wherein according to the invention a liquid or viscous adhesive medium (11) is arranged between the adjacent surfaces of the light panel (10) and of the light-permeable carrier plate (13). In this way, lamps or displays in which one or more light panels (10) lie on an at least partially light-permeable carrier plate (13) can be created, wherein a full-area connection between the light panel (10) and the carrier plate (13) having minimized light losses is achieved and at the same time the connection between the light panel (10) and the carrier plate (13) can be undone.
Emdedesign Gmbh



Refraction topics:
  • Refraction
  • Semiconductor
  • Transparent Electrode
  • Scattering
  • Nanoparticle
  • Distributed
  • Liquid Crystal Display
  • Liquid Crystal
  • Irradiation
  • Second Wave
  • Integrated Circuit
  • Light Guide
  • Data Processing
  • Laser Vision
  • Treatments


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    This listing is a sample listing of patent applications related to Refraction for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Refraction with additional patents listed. Browse our RSS directory or Search for other possible listings.


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