This page is updated frequently with new Refraction-related patent applications.
|High efficiency image sensor pixels with deep trench isolation structures and embedded reflectors|
An image sensor with an array of pixels is provided. To minimize optical and electrical and crosstalk, the array of pixels may include deep trench isolation structures interposed between adjacent pairs of photodiodes.
Semiconductor Components Industries, Llc
|Chromatic aberration correction in imaging system including variable focal length lens|
An image acquisition system is operated to provide an image that is relatively free of the effect of longitudinal chromatic aberration. The system includes a variable focal length lens (e.g., a tunable acoustic gradient index of refraction lens) that is operated to periodically modulate a focus position.
|Phosphor converted white light emitting devices and photoluminescence compounds for general lighting and display backlighting|
A phosphor converted white light emitting device comprises a solid-state light emitter (led) operable to generate blue light with a dominant wavelength in range 440 nm to 470 nm; yellow to green-emitting phosphor operable to generate light with a peak emission wavelength in a range 500 nm to 550 nm; and a red-emitting manganese-activated fluoride phosphor such a manganese-activated potassium hexafluorosilicate phosphor (k2sif6:mn4+). The yellow to green and red-emitting phosphors are incorporated as a mixture and dispersed throughout a light transmissive material with an index or refraction of 1.40 to 1.43.
|Method of refraction angle mapping of earth's limb|
refraction angles in a planet's atmosphere are mapped using a database of known star locations and a field imager onboard a platform above the planet. The field imager is positioned to observe a region that includes a portion of the planet's atmospheric limb.
G&a Technical Software, Inc.
|Optical coupler for coupling light in/out of an optical receiving/emitting structure|
An optical coupler (1) for coupling light in/out of an optical receiving/emitting structure comprises an optical fiber (100), a supporting device (200) to support the optical fiber (100) comprising a supporting structure (210) in which the optical fiber is arranged, and a covering device (300) to cover the supporting structure. An end face (e100a) of the optical fiber (100) is configured to reflect the light to one of the supporting device (200) and the covering device (300) comprising a first area and a second area (210, 220, 310, 320) being provided with a respective different index of refraction or a change of the respective index of refraction so that the first area (310) is configured as one of an optical waveguide (311) and at least one optical lens (312) being embedded in the second area and forming an optical pathway in said one of the supporting device and the covering device..
Ccs Technology, Inc.
|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 an effective focal length of the intraocular lens system. Methods of modifying a focal length of an intraocular lens system are also disclosed..
|Electrically-tunable lenses and lens systems|
An optical device (34, 66, 76) includes an electro-optical layer (48), having an effective local index of refraction at any given location within an active area of the electro-optical layer that is determined by a voltage waveform applied across the electro-optical layer at the location. Conductive electrodes (44, 64, 74, 82, 84) extend over opposing first and second sides of the electro-optical layer.
Optica Amuka (a.a.) Ltd.
Where t is a thickness of the substrate between the first surface and the second surface of the substrate and np is an index of refraction of the first prism.. .
|Transparent display backlight assembly|
In embodiments of a transparent display backlight assembly, a backlight panel is operable as a transparent panel, and a light source generates light that the backlight panel directs from the light source to illuminate a display panel of a display device. Light refraction features refract and scatter the light, where the light refraction features are spaced for approximate transparency of the backlight panel and to illuminate the display panel.
Microsoft Technology Licensing, Llc
An infrared filter includes a substrate having a front surface and a back surface. The infrared filter includes screened ink and an optically clear medium, or dye impregnated medium.
Microsoft Technology Licensing, Llc
Organic light emitting diode display device
An organic light emitting diode display device is provided. The organic light emitting diode display device includes a first insulating layer disposed on a substrate and having a first refractive index, a refraction inducing layer disposed on the first insulating layer having a second refractive index, a second insulating layer disposed on the refraction inducing layer and having a third refractive index, a first electrode disposed on the second insulating layer and having a fourth refractive index, and an organic light emitting layer and a second electrode disposed on the first electrode.
Lg Display Co., Ltd.
Broadband antireflection coatings under coverglass using ion gun assisted evaporation
The present disclosure generally relates to broadband antireflective coatings for reducing reflection of light in the infrared without compromising visible light reflectance in multijunction solar cells bonded to coverglass, and methods of forming the same. The antireflective coatings include a high index, one or more intermediate index, and low index of refraction dielectric layers.
The Boeing Company
Multi-level image focus using a tunable lens in a machine vision inspection system
A method is provided for defining operations for acquiring a multi-exposure image of a workpiece including first and second regions of interest at different z heights. The multi-exposure image is acquired by a machine vision inspection system including strobed illumination and a variable focal length lens (e.g., a tunable acoustic gradient index of refraction lens) used for periodically modulating a focus position.
Article and implementing electronic devices on a substrate using quantum dot layers
Novel use of a cladded quantum dot array layer serving as a waveguide channel by sandwiching it between two cladding layers comprised of lower index of refraction materials is described to form si nanophotonic devices and integrated circuits. The photonic device structure is compatible with si nanoelectronics using conventional, quantum dot gate (qdg), and quantum dot channel (qdc) fet based logic, memories, and other integrated circuits..
Electronic device with low reflectance and color matched display border
A display may have an active area in which pixels display images through a transparent display layer. An opaque masking material may be formed in an inactive border area adjacent to the active area.
Rear projection display screen and device
The present invention involves a rear projection display screen, including at least one assembly including: a film having a surface facing the back of the screen including ridges defining prisms; and an element of controllable refraction index, coating the ridged surface of said film.. .
Commissariat A L'energie Atomique Et Aux Energies Alternatives
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.
Solar refraction device for heating industrial materials
Disclosed is a solar refraction device (“srd”) for heating industrial materials in a heating container, having a bottom, with diffuse solar energy that impinges on an outside surface of the srd and is refracted through the srd. The srd may include a lens array assembly and a plurality of lens panes attached to the lens array assembly.
The Boeing Company
Energy efficient fractionation process for separating the reactor effluent from tol/a9+ transalkylation processes
Processes and apparatus are disclosed for the energy efficient separation of the effluent from a tol/a9+ transalkylation reactor. The apparatus includes a reboiled prefractionation column and a sidedraw tower that produces: 1) an overhead stream including unreacted toluene, 2) a stream including unreacted c9+ aromatics, a portion of which stream may be recycled to the reactor; and 3) a sidedraw stream including c8 aromatics that may be directed to a crystallization or selective adsorption paraxylene separation unit for recovery o a paraxylene product..
Bp Corporation North America Inc.
Light emitting device on a mount with a reflective layer
Embodiments of the invention include a semiconductor light emitting diode (led) attached to a top surface of a mount. A multi-layer reflector is disposed on the top surface of the mount adjacent to the led.
Koninklijke Philips N.v.
Transparent conductive film
A transparent conductive film 1 includes, in this order, a transparent substrate 2, a first optical adjustment layer 4, an inorganic layer 5, and a transparent conductive layer 6. The first optical adjustment layer 4 has refraction nc lower than refraction na of the transparent substrate 2, and thickness tc of 10 nm or more and 35 nm or less.
Systems and methods for electronically controlling the viewing angle of a display
Systems and methods for electronically controlling the viewing angle of a display using liquid crystal optical elements are provided. Each liquid crystal optical element may be associated with a respective scattering module and may selectively steer a device generated light beam to one of two or more scattering regions of its associated scattering module.
Recorded matter, recording method, and image processing method
A recorded matter recorded on a recording medium includes a first layer formed by an ink a on or above the recording medium, the first layer having an index of refraction a; a second layer formed by an ink b on the first layer formed by the ink b, the second layer having an index of refraction b (where b<a); and a third layer formed by an ink c or by a transparent resin material on the second layer, the third layer having an index of refraction c (where c>a) and forming a surface layer of the recorded matter.. .
Canon Kabushiki Kaisha
Method of manufacturing a laminate and the laminate made thereby
A method of manufacturing laminate, comprising of at least two layers (1, 5) of thermoplastic materials with a diffractive optical element incorporated between them. In this method a layer (2) with a different refraction index from that of a carrying layer (1) and/or from that of a cover layer (5) of thermoplastic material is put on a carrying layer (1) and covered by the cover layer (5).
Iq Structures S.r.o.
Apparatus and suppressing parasitic lasing and applications thereof
Apparatus and methods that enable the suppression of amplified spontaneous emission (ase) and prevention against parasitic lasing in cryogenically-cooled laser amplifier systems, thus allowing sustainable extraction efficiency when increasing the pump power and suitable for large-scale, high average-power laser systems employing large-aperture gain media. A gain medium having a known index of refraction for operation in an evacuated, cryogenic environment includes an ase-absorbing epoxy composition on the perimetrical edge of the gain medium, wherein the epoxy composition has an index of refraction that substantially matches the index of refraction of the gain medium..
University Of Central Florida Research Foundation, Inc.
Labeling and authenticating using a microtag
An identifier made using a silicon film. The silicon film has a varying optical index of refraction.
Trutag Technologies, Inc.
Adjustable optical stereoscopic glasses
The present invention provides an optical 3d stereoscopic glasses comprising a housing, a left lens assembly and a right lens assembly wherein the lens assemblies use refraction to create one of the following viewing modes: positive parallax hyperstereo viewing mode, positive parallax hypostereo viewing mode, negative parallax hyperstereo viewing mode, and negative parallax hypostereo viewing mode, which can causes a viewer to perceive 3d stereoscopic vision of a 2d image shown on a planar screen.. .
Lampshade and luminaire using same
An improved luminaire connects a light-redirecting layer between a fixture body and a lampshade to eliminate the need for shielding plates. Illumination sources mounted to the fixture body emit light that is aimed at the light-redirecting layer.
Refraction technology system
A system and method for modifying monoatomic oxygen levels in an initial fluid, for applications. The system and method produces both positive and negative oxygen modified fluid that retains oxygen levels for long durations as measured by oxygen reduction potential (orp).
A foldable lens comprises an outer refractive surface portion comprising a first plurality of convexly curved refractive profile regions having positive optical power to converge light energy with refraction toward a focus on the retina. The convexly curved refractive profile regions of the outer region may correspond to at least about a quarter of the refractive power of the lens, such that the lens thickness is decreased substantially and the folded lens can fit through a small incision.
Abbott Medical Optics Inc.
Corrective eyeglasses and subjective refraction by a wearer of said eyeglasses
The first optical element and the second optical element are adjustable in rotation about the optical axis independently of one another.. .
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
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
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
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
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.
Phoropter, 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
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
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
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
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.
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..
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.
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.