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Refraction patents

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

 Ophthalmic lens for correcting astigmatism patent thumbnailOphthalmic lens for correcting astigmatism
An ophthalmic lens to be worn on or in a human eye for refractive correction of astigmatism. The lens has an anterior surface and a posterior surface shaped such that at least a zone of the lens said lens has a first dioptric power over a first main meridian, a second dioptric power different from the first dioptric power over a second main meridian intersecting the first meridian, and a dioptric power between the first dioptric power and said second dioptric power over each meridian between the first and second main meridians, the optical power continuously varying from meridian to meridian.
Ophtec B.v.

 Tunable lighting apparatus patent thumbnailTunable lighting apparatus
A luminaire including a housing and a light source carried by the housing. The housing may include a first and second set of light emitting elements and a lens assembly.
Lighting Science Group Corporation

 Multi-functional sensor assembly patent thumbnailMulti-functional sensor assembly
A sensor assembly has a flexible body, and a plurality of fiber bragg gratings (fbg) sensor inserted into the body, the fbg sensor includes an optical fiber extending in a length direction of the body and a plurality of lattices disposed in the optical fiber, a variation of a wavelength spectrum of light, caused by a variation of an interval of the plurality of lattices, is detected, and at least one of force information applied to the body and temperature information of the body is extracted together with refraction information of the body.. .
Korea Institute Of Science And Technology

 Coupling of photodetector array to optical demultiplexer outputs with index matched material patent thumbnailCoupling of photodetector array to optical demultiplexer outputs with index matched material
A system is provided for improved coupling of photodetectors to optical demultiplexer outputs, for example an arrayed waveguide grating (awg), using a refractive index matched material. In one embodiment, the system may include an optical demultiplexer including multiple optical outputs corresponding to multiple signal channels and a photodetector array including a plurality of photodiodes aligned with the multiple optical outputs.
Applied Optoelectronics, Inc.

 Systems and methods to improve optical spectrum fidelity in integrated computational elements patent thumbnailSystems and methods to improve optical spectrum fidelity in integrated computational elements
Systems and methods are disclosed for improving optical spectrum fidelity of an integrated computational element fabricated on a substrate. The integrated computational element is configured, upon completion, to process an optical spectrum representing a chemical constituent of a production fluid from a wellbore.
Halliburton Energy Services, Inc.

 Fluid-filled implantable structures with internal surface-modifying components and related methods patent thumbnailFluid-filled implantable structures with internal surface-modifying components and related methods
Implantable reservoir structures include an interior and/or exterior modifying element joined to the interior and/or exterior surface of the membrane defining the reservoir in order to alter one or more physical properties thereof. The physical properties can be mechanical (e.g., material strength, flexibility, shear modulus, young's modulus, hardness, and/or ductility); optical (e.g., refraction, transparency, transmission spectrum, absorption spectrum, fluorescence spectrum, and/or color); and/or permeability to liquids generally or to a particular type of liquid, solute, or suspended material..

 Medical guidewire with integral light transmission patent thumbnailMedical guidewire with integral light transmission
A guidewire comprises an elongate metal core, an inner layer, an optical core, and an outer layer. The metal core is configured to communicate torsional motion from a proximal end of the metal core to the distal end of the metal core.
Acclarent, Inc.

 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 over respective individual light-emitting elements or groups of light-emitting elements.
Global Oled Technology Llc

 Optoelectronic device with improved reflectivity patent thumbnailOptoelectronic device with improved reflectivity
The invention concerns an optoelectronic device (40) comprising: a substrate (14); a first layer (42) covering the substrate, the first layer having a thickness greater than or equal to 15 nm and comprising a first material having an extinction coefficient greater than or equal to 3 for any wavelength between 380 and 650 nm; a second layer (18) covering and in contact with the first layer, the second layer having a thickness less than or equal to 20 nm and comprising a second material having a refraction index of between 1 and 3 and an extinction coefficient less than or equal to 1.5 or any wavelength between 380 and 650 nm; and conical or frustoconical wire semiconductor elements (24) each having a light-emitting diode stack (del), being in contact with the second layer.. .

 Optical concentrator/diffuser using graded index waveguide patent thumbnailOptical concentrator/diffuser using graded index waveguide
An optical concentration/diffusion apparatus and method is provided that uses a waveguide having a graded index of refraction in a first direction. Light propagating in a second direction different from the first direction follows a curved, path being reflected at multiple intervals by a planar interface of the waveguide.
UniversitÉ Laval

Lens assembly

A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens is with negative refractive power.
Asia Optical Co., Inc.

Microchip and manufacturing method therefor, and multi-channel fluorescence detection device

Efficient simultaneous laser irradiation fluorescence detection is performed for a plurality of channels of a microchip and simple and highly sensitive parallel analysis of a plurality of samples is enabled. In a microchip including a material m1 having a refractive index n1, a plurality of channels filled with materials m2 having a refractive index n2 and a plurality of channels filled with materials m3 having a refractive index n3 are alternately arranged in parallel on the same plane.
Hitachi, Ltd.

Interference pigments on the basis of perlite flakes

The present invention relates to pigments, comprising a plate-like substrate of perlite, and (a) a dielectric material, especially a metal oxide, having a high index of refraction; and/or (a) a metal layer, especially a thin semi-transparent metal layer; a process for their production and their use in paints, ink jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass.. .
Basf Corporation

Article having composite lenticular microstructures and making

Lenticular microstructures and methods of making the same is disclosed. The lenticular microstructures include composite lenticular microstructures having a first light transmissive polymeric layer, a second light transmissive polymeric layer, and an interface therebetween, wherein the first light transmissive polymeric layer has a first index of refraction, the second light transmissive polymeric layer has a second index of refraction, and the first and second indices of refraction have an absolute difference of at least 0.0002..
3m Innovative Properties Company

Liquid presence/turbidity sensor using single optical channel

A multisensor employs an optical system that is modified by the index of refraction of fluid passing between a light emitter and light detector to successfully distinguish between air and water (of any turbidity) and between water of different turbidity values. The optical system may employ lenses contacting the fluid to change their focal length and thus to focus and defocus light on the light detector depending on an index of refraction of the fluid..
Illinois Tool Works Inc.

Microscope with tunable acoustic gradient index of refraction lens enabling multiple focal plan imaging

An apparatus, system and method for microscopy. The apparatus, system and method includes a stage configured to receive an item; a tunable acoustic gradient index of refraction (tag) lens having a first aspect positioned to image the received item, wherein the first aspect of the tag lens is configured to have an optical power profile in accordance with an operational frequency of the tag lens; one or more lenses configured to magnify an image of the received item at a viewing point; and at least one pulsed light source configured to illuminate the received item and to pulse at one or more points within the optical power profile of the tag lens..

Adiabatic planar waveguide coupler transformer

Methods of depositing materials to provide for efficient coupling of light from a first device to a second device are disclosed. In general, these methods include mounting one or more wafers on a rotating table that is continuously rotated under one or more source targets.
Demaray, Llc

Substrate for led with total-internal reflection layer surrounding led

A packaged led module includes an led die mounted on a substrate surface. Formed on the substrate surface and surrounding the die is a first layer of a low index of refraction material.
Koninklijke Philips N.v.

Acousto-optic crystal optical waveguide and acoustic wave sensor having the same

An acousto-optic crystal optical waveguide is applicable to an acoustic wave sensor for sensing acoustic wave, wherein the acousto-optic crystal optical waveguide includes an acousto-optic crystal core and an inner cladding layer covering the acousto-optic crystal core. The acoustic wave is able to change the refraction index of the acousto-optical crystal optical waveguide to make a light beam with specific wavelength refracting to outside of the acousto-optic crystal waveguide when a light beam transmits through the acousto-optic crystal optical waveguide.
National Sun Yat-sen University

Online measurement of black powder in gas and oil pipelines

A method and system for determination of contaminants, such as black powder, in a flowing fluid, such as natural gas, is disclosed. The method comprises transmitting a plurality of light beams over a spectrum of wavelengths through the flowing fluid in a main pipeline and receiving a plurality of measurements relating to transmitted and scattered light beams over the spectrum of wavelengths.
The Petroleum Institute

Extruder for three-dimensional printers

An extrusion head of an extruder is configured to move along a feedpath independently from a heating element so that the extrusion head can yield to extrusion-related forces. Specifically, the extruder may include an extrusion head movably coupled to a thermal core to permit axial displacement of the extrusion head relative to the thermal core.
Makerbot Industries, Llc

Rgb led light

An led light, including: a red (r) light, a green (g) light, and a blue (b) light. Each light includes a light-emitting surface.

Optical semiconductor resonator, optical semiconductor device, and optical module

In order to prevent non-uniformity in emission wavelength among different sites along an optical axis direction, provided is a resonator portion including: a waveguide which includes a first area and a second area being adjacent to the first area; and diffraction gratings formed along an optical axis direction. The effective refraction index in the first area is larger than the one in the second area, and the thickness in the first area is larger than the one in the second area.
Oclaro Japan, Inc.

Device for tolling or telematics systems

The present subject matter relates to a device for tolling or telematics systems provided with a pixel based image sensor. The image sensor is adapted to be arranged above a surveillance zone provided on a road, wherein the surveillance zone has an extension along the direction of the road.
Kapsch Trafficcom Ab

Integrated waveguide coupler

A waveguide coupler includes a first waveguide and a second waveguide. The waveguide coupler also includes a connecting waveguide disposed between the first waveguide and the second waveguide.
Skorpios Technologies, Inc.

Method for manufacturing a reflective optical film

A reflective optical film includes a reflective light-polarizing unit including a multilayer reflective sheet composed of a plurality of polymer films stacked on top of one another. Each polymer film has a thickness, every two adjacent polymer films are two different materials, and the thicknesses of the polymer films are gradually decreased from two outmost sides of the multilayer reflective sheet to a middle of the multilayer reflective sheet.
Extend Optronics Corp.

Lens with facilitated light diffusion

A lens for distribution of light from a light emitter. The lens has thick and thin wall portions between inner and outer lens surfaces.
Cree, Inc.

Multi-refraction led lamp

Disclosed is a multi-refraction led lamp composed of a lamp holder, a lamp body, a heat sink member, a circuit board, an aluminium substrate, an led chip, a light-permeable cover and a glass shell, wherein the lamp holder is tightly fixed at a lower end of the lamp body, the heat sink member is integrally injection-moulded on an inner wall of the lamp body, the circuit board is mounted in the lamp body, the aluminium substrate is snap-fastened inside the lamp body and located above the circuit board, the led chip is mounted on the aluminium substrate, the light-permeable cover is fixed in the lamp body and covers the aluminium substrate, the glass shell is fixed on the lamp body and covers the light-permeable cover, and the lamp holder is electrically connected to the led chip via the circuit board.. .
Star Electrical Equipment Co., Ltd.

Method and fixation measurement and refraction error measurement using wave-front error

A method and apparatus for fixation measurement includes projecting, by an image projector, a stimulus onto one or more eyes of a patient via a beam splitter, and capturing, by one or more image sensing devices disposed conjugate to the one or more eyes, a reflected image including light reflected from the one or more eyes in response to the stimulus, the reflected image including information indicating the fixation of the one or more eyes.. .
Rebiscan, Inc.

Methods and devices for refractive correction of eyes

Methods and devices are provided to obtain refractive correction with superior visual acuity (e.g., 20/10) by achieving an astigmatism-free customized refractive correction. The astigmatism-free customized refractive correction involves obtaining an objective and precise measurement of cylindrical power in a resolution between 0.01 d and 0.10 d in an eye using an objective aberrometer, reliably relating the cylindrical axis obtained from the objective aberrometer to that in a phoroptor, determining an optimized focus error of an eye through subjective refraction with a phoroptor, generating a customized refraction by combining the objective measured cylindrical power, the objective measured cylindrical axis, and the subjectively measured focus power, fabricating a custom lens with a tolerance finer than 0.09 d based on the generated customized refraction, and delivering an ophthalmic lens that can provide an astigmatism-free refractive correction for an eye..
Perfect Vision Technology (hk) Ltd.

Light emitting device having wide beam angle and fabricating the same

A light emitting device including a light emitting structure disposed on one surface of a substrate and a transflective portion disposed on the other surface of the substrate. The transflective portion and the substrate have different indexes of refraction from one another..
Seoul Viosys Co., Ltd.

Structure and fixing phase effects on euv mask

This invention relates to a structure for fixing phase effects on euv mask which contains a repeating pattern with an assist feature, or a pattern with two different sized features in close proximity. The euv mask with the repeating pattern is capable of printing a group of trenches on a photoresist layer.
International Business Machines Corporation

System and providing active refraction feedback for devices with variable index of refraction

A system for providing active refraction feedback for devices with a variable index of refraction includes a reference beam generator and an altered reference beam sensor. The reference beam generator is configured to generate a reference beam and to apply the reference beam to a variable-index-of-refraction (vir) device.
Raytheon Company

Vehicular lamp

The present disclosure provides a lamp unit including: a first lens that has a positive refractive power on a front surface and a rear surface thereof; a second lens that is positioned behind the first lens and has a plurality of positive refraction areas each having a positive refractive power; and a plurality of light sources that are arranged near focal points of the positive refractive areas. Thus, the light sources may be arranged to be spaced apart from each other..
Koito Manufacturing Co., Ltd.

Breakaway hose support

A fluid dispensing system including a support structure, a hose configured to dispense fluid therethrough, and a support cable coupled to the hose. The hose is directly or indirectly releasably coupled to the support structure via the cable.
Opw Fueling Components Inc.

Nanoparticle manufacturing system

The present invention provides a nanoparticle manufacturing system differing from conventional nanoparticle fabricating equipment. In this nanoparticle manufacturing system, a laser beam emitted from a laser source is directly guided to the surface of a target disposed in an ablation chamber through a light guide tube, such that the laser beam is prevented from being influenced by reflection and/or refraction effects occurring from the cooling liquid filled in the ablation chamber.
Gold Nanotech Inc

Holographic projection gaming and learning system

A holographic projection gaming and learning system comprises a holographic projection device, an input unit used to present one or more instruction contents and an electronic device having a screen, wherein the holographic projection device includes at least a placement board configured with an opening, at least a projection refraction board and at least a supportive positioning component; therefore, upon placing the electronic device on the placement board of the holographic projection device, the capture module of the electronic device can capture the instruction contents provided by the input unit and transfer to the application software thereby that the application software determines the received instruction contents to display at least a holograph image on the screen, and the holograph image displayed on the screen of the electronic device can be illuminated onto the projection refraction panel of the projection refraction board via the opening of the placement board and then the projection refraction panel projects the holograph image outward for imaging, so that the system according to the present invention can closely combine the holograph image contents with the desktop gaming processes in order to further increase the playfulness of the game.. .
Mirax Technology Corp.

Variable focal backlighting

A backlight unit includes a waveguide assembly having a first wedge and a birefringent wedge disposed adjacent to, and arranged nose-to-tail with, the first wedge, to define an interface of the waveguide assembly. The birefringent wedge has different indices of refraction for light propagating through the waveguide assembly in first and second polarization states.
Microsoft Technology Licensing, Llc

Lens for displaying a virtual image

A lens for projecting a virtual image comprising first and second body sections coupled along first and second surfaces to form an internal interface within the lens, and a reflective coating on at least a portion of either the first surface or the second surface configured to redirect light projected into the second body section toward an eye of a wearer. Another lens comprising first and second body sections having different indices of refraction, and an interface configured to redirect light toward an eye of a wearer for display as a virtual image.
Laforge Optical, Inc.

High contrast inverse polarizer

An embedded, inverse wire-grid polarizer (wgp) includes ribs 13 located over a surface of a transparent substrate 11, gaps 16 between the ribs 13, and a fill-layer 15 substantially filling the gaps 16. The fill-layer has a relatively high index of refraction, such as greater than 1.4.
Moxtek, Inc.

Integrated diffuser with variable-index microlens layer

An apparatus may include a first layer having a range of first layer indices of refraction. The range of first layer indices of refraction may include at least two indices of refraction.
Qualcomm Mems Technologies, Inc.

Emitter geolocation method

A method for correcting for refraction effects of the earth's atmosphere in an emitter geolocation technique for locating an emitter of electromagnetic waves, by way of a plurality of receivers, includes detecting the times of arrival of electromagnetic waves at the receivers, computing the relative time differences of arrival between the various receivers and estimating therefrom the position of the emitter, and, for correcting, by way of an iterative procedure, the detected times of arrival for path length discrepancies caused by refraction in the earth's atmosphere. The receivers are each mounted on a respective airborne platform, and at least three pairs of the receivers are provided..
Selex Es Ltd.

Processes and making transversely drawn films with substantially uniaxial character

A roll of multilayer optical film is described. The roll includes a substantially uniaxially-oriented multilayer optical film, where at least one layer of the multilayer optical film has indices of refraction in a length direction and a thickness direction that are substantially the same, but substantially different from an index of refraction in a width direction..
3m Innovative Properties Company

Neutrino communication system

An advanced communications system comprising an emitter and an improved receiver (detector) utilizing modulated beams of neutrino and antineutrino waves as information carriers between the emitter and the receiver. Generation of modulated neutrino and antineutrino beams in the emitter is achieved by a laser-like medium, while detection and demodulation of the neutrino and antineutrino beams is accomplished by a second laser-like medium which registers the flux (or fluence) of modulated neutrinos and antineutrinos passing there-through by means of resonant stimulated deexcitation of lasable excited states.

Refractive-diffractive ophthalmic device and compositions useful for producing same

Provided herein is a multifocal ophthalmic device comprising a lens body being formed with a plurality of concentric annular zones separated by slanted steps which effect both diffraction and refraction of incident light, while being devoid of any diffractive or refractive power, whereas the lens body is made from a co-polymeric composition based on less than 75% aromatic acrylate monomers, and includes a curcuminoid compound as a uv-light stabilizer; as well as use of the device for treating ophthalmologic and/or esthetic condition associated with an eye.. .

Microscopy system with auto-focus adjustment by low-coherence interferometry

Disclosed are several technical approaches of using low coherence interferometry techniques to create an autofocus apparatus for optical microscopy. These approaches allow automatic focusing on thin structures that are positioned closely to reflective surfaces and behind refractive material like a cover slip, and automated adjustment of focus position into the sample region without disturbance from reflection off adjacent surfaces.
Thorlabs, Inc.

Methods and apparatus related to a launch connector portion of a ureteroscope laser-energy-delivery device

In one embodiment, an apparatus includes an optical fiber made of a silica-based material. A proximal end portion of the optical fiber has an outer-layer portion.
Boston Scientific Scimed, Inc.

2d/3d switchable backlight unit and image display apparatus using the same

A two-dimensional (2d)/three-dimensional (3d) switchable backlight unit and an image display apparatus using the 2d/3d switchable backlight unit are provided. The 2d/3d switchable backlight unit includes: a light source unit; a first light guide plate, within which light from the light source unit is totally internally reflected; and a plurality of refraction patterns, each having a trapezoidal form.
Samsung Electronics Co., Ltd.

Led bulb or led night light has moving project-image

The led light device including led night light or led bulb has the moving project image by (1) leds on time difference period (2) magnetic field force to making film/opening/printed piece moving (3) motor or movement to make the film/opening/printed piece or project-lens moving. All big image created from led light source through film/opening/printed piece/slide then through the project lens to make the lighted tiny image to passing though refraction properties project len(s) to get the bigger size or colorful or steady or moving bigger image for wider viewing angle to viewer.

Illumination device with spinning zoom lens

The present invention relates to an illumination device comprising a number of light sources arranged in at least a first group of light sources and in a second group of light sources, where said first group of light sources and said second group of light sources are individually controllable. Optical means collect light from the first and second group of light sources and convert the collected light into a number of first and second light beams.
Martin Professional Aps

Yellow backlight system and method thereof

Provided is a method for a yellow backlight, including the following steps of emitting blue light by a display device; and emitting yellow light into surroundings of the display device in a manner of refraction, reflection or a combination of reflection and refraction by at least one yellow light source to neutralize and decrease intensity of the blue light. The present invention further provides a system for a yellow backlight..

High-refractive adhesive film and touch panel including the same

A high-refractive adhesive film includes: a thermosetting resin matrix; and high refractive particles dispersed in the thermosetting resin matrix. The refraction index of the high-refractive particles is higher than that of the thermosetting resin matrix..
Lg Hausys, Ltd.

Backlit display device with integrated photovoltaic cells

Process for manufacturing a photovoltaic module placed on an emissive display device, said photovoltaic module comprising an array containing a plurality of photovoltaic cells and a plurality of transparent zones called “orifices”, and said photovoltaic module comprising an array of optical elements able to focus, by refraction or reflection, the light emitted by the device into the orifices.. .
Sunpartner Technologies

Liquid crystal displays with minimized transmission loss and enhanced off-axis color fidelity

A display may have upper and lower display layers. A layer of liquid crystal material may be interposed between the upper and lower display layers.
Apple Inc.

Pavement marking tape incorporating advanced materials for improved visibility

A pavement marking tape has visibility-enhancing features for both humans and machines, including high-index-of-refraction reflective elements, quantum emitters, dichroic pigments, and passive, machine-readable emitting tags (e.g., rfid tags).. .
Brite-line Technologies, Llc

Latch pin assembly for folding wing tip system

A folding wing tip system of an aircraft includes a latch pin actuator having a primary mechanical lock and a secondary hydraulic lock. The mechanical lock may include a lock cam movable between a lock position, in which the lock cam engages the latch pin, and an unlock position, in which the lock cam is disengaged from the latch pin, and a first lock actuator mechanically coupled to the lock cam and configured to provide a bias force pushing the lock cam toward the lock position.
The Boeing Company

Devices to increase oled output coupling efficiency with a high refractive index substrate

Embodiments disclosed herein provide an organic light emitting diode (oled) device is provided, including a high index substrate having an index of refraction of 1.5 or greater, a reflective electrode, an organic emissive layer configured to emit light having a wavelength of λ and where an optical distance between the organic emissive layer and the reflective electrode of the oled is between λ/4 and 3λ/4.. .
Universal Display Corporation

Camera lens

A camera lens includes a first lens with positive refraction power, an aperture, a second lens with negative refraction power, a third lens with one of positive refraction power or negative refraction power, a fourth lens with positive refraction power, a fifth lens with negative refraction power, a filter, and an image sensor in the order from the object side to the image side. The camera lens is satisfied a following formula: 0.1<(0.5*p/d)<1.5, wherein d is a diameter of the aperture, p is a pixel size of the image sensor.
Hon Hai Precision Industry Co., Ltd.

Display apparatus with improved viewing angle

Provided is a display apparatus including a display panel and an optical film. The optical film includes a refraction layer including a first pattern in which a first air gap is defined, and an adhesive layer disposed between the refraction layer and the display panel, including first and second layers.
Samsung Display Co., Ltd.

Light flux controlling member and light-emitting device

A light flux controlling member includes an incidence region and an emission region. The incidence region includes a refraction part on which a part of the light emitted from the light emitting element is incident, the refraction part being disposed at a center portion of the incidence region and configured to refract the incident light such that the incident light travels away from an optical axis of the light emitting element, and a reflection part on which another part of the light emitted from the light emitting element is incident, the reflection part being disposed outside the refraction part and configured to reflect the incident light such that the incident light approaches the optical axis.
Enplas Corporation

Light distribution cob module led street lamp lens capable of illuminating 3 - 5 lanes

The invention relates to a light distribution method for a cob module led street lamp lens capable of illuminating 3 or 5 lanes. The light distribution method is characterized in that the light emitted by a cob module led light source is firstly refracted by a drop-shaped refraction lens and then refracted secondarily by a light distribution curved surface lens to achieve an optimal irradiation effect.
Hongli Linghting Group Co., Ltd.

Retinoscopy paddle with integrated axis compass or adapter, and associated method

An improved retinoscopy paddle with lens received through openings extending through the paddle member has an axis compass with indicia for assessing the range of refraction error and axis of astigmatism in the eyes of a patient as part of an optical examination. The axis compass may be formed on the paddle member or on a receptacle member adapted for operative receipt on as associated retinoscopy paddle.
Good-lite Co.

Effective acuity and refraction targets

A viewing target for a visual acuity and refraction measurement includes at least one line comprising a width dimension that is below a resolution limit width (hereinafter “rlw”) of a test subject visual acuity, and an adjustable length dimension that is initially set at greater than the rlw of the test subject visual acuity. A base, at least approximately intersecting the line, has a thickness along the direction of the length of the line that is greater than the rlw of the test subject visual acuity.

Two-section semiconductor laser with modulation-independent grating section to reduce chirp

A two-section semiconductor laser includes a gain section and a modulation-independent grating section to reduce chirp. The modulation-independent grating section includes a diffraction grating for reflecting light and forms a laser cavity with the gain section for lasing at a wavelength or range of wavelengths reflected by the diffraction grating.
Applied Optoelectronics, Inc.

Emissive article with light extraction film

An emissive article includes an oled having a light emission surface, a circular polarizer, and a light extraction film optically between the oled and the circular polarizer and being optically coupled to the light emission surface. The light extraction film includes a two-dimensional structured layer of extraction elements having a first index of refraction and a pitch in a range from 400 to 800 nm and a backfill layer including a material having a second index of refraction different from the first index of refraction..
3m Innovative Properties Company

Head-up display, and vehicle equipped with head-up display

A head-up display according to the present disclosure is mounted to a vehicle having a windshield and allows an observer to visually recognize a virtual image. The head-up display includes a display element configured to display an image, a reflection optical system configured to reflect the image displayed by the display element and project the image onto the windshield, and a refraction optical system disposed between the reflection optical system and the windshield and having optical power.
Panasonic Intellectual Property Management Co., Ltd.

Optical focusing device

An optical reflection focusing device, including a grating including an alternation of first and second regions having different refraction indexes, the grating including a plurality of sub-gratings, each including a plurality of first regions aligned along a plane parallel to the mean plane of the grating, said device including structures such that, for a collimated incident coherent light beam orthogonal to the mean plane of the grating, the rays of the beam reach with a non-zero phase shift different sub-gratings of the device.. .
Commissariat â L'energie Atomique Et Aux Energies Alternatives

Curved display device

The present invention provides a curved display device, and relates to the field of display technology. The curved display device comprises a plane display panel and a gradient index lens provided at light exit side of the plane display panel, wherein the gradient index lens makes light exiting from the plane display panel converge toward a center of display surface of the curved display device.
Beijing Boe Display Technology Co., Ltd.

Photodetector focal plane array systems and methods

A photodetector focal plane array system, comprising: a substrate comprising a plurality of photosensitive regions; and a microcomponent disposed adjacent to each of the plurality of photosensitive regions operable for receiving incident radiation and directing a photonic nanojet into the associated photosensitive region. Optionally, each of the microcomponents comprises one of a microsphere and a microcylinder.

Methods and systems for monitoring a target using refraction data acquired with buried sources and buried sensors

Methods and systems for monitoring a target volume are characterized by having sources and detectors buried under the weathering layer and comparing data corresponding to refracted waves acquired during different surveys to infer changes in the target volume, wherein locations of sources and detectors are the same for the different surveys.. .

Image pickup lens, and camera module and digital device including the same

Embodiments provide an image pickup lens including a first lens to a fourth lens arranged in sequence from an object side to an image side, the first lens to the fourth lens each having refraction. The first lens and the second lens have negative refraction.

Adhesive film and display member including the same

An adhesive film is formed of an adhesive composition that includes a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer, and nanoparticles. The adhesive film has a glass transition temperature (tg) of about −20° c.

Bss-only multi-spot laser probe

An optical surgical probe includes a cylindrical cannula; a light guide partially within the cannula to receive a light beam from a light source through a proximal end, to guide the light beam to a distal end of the light guide, and to emit the light beam through the distal end of the light guide; a multi-spot generator at a distal end of the cannula that includes an optical element with a proximal surface to receive the emitted light beam, and a focusing lens, positioned inside the optical element to focus the received light beam into a focused beam, wherein the optical element has a faceted distal surface to split the focused beam into multiple distally emitted beam-components when the optical surgical probe is operated in a fluid with an index of refraction of 1.30-1.40, and to confine the focused beam in the optical surgical probe when the optical surgical probe is operated in air.. .

Apparatus and fixation measurement with refraction error measurement using image sensing devices

A method and apparatus for fixation measurement includes projecting, by a projection apparatus, a target image onto one or more eyes of a patient and capturing, by one or more image sensing devices disposed conjugate to the one or more eyes, a reflected image reflected from the one or more eyes in response to the target image, wherein the reflected image includes information indicating the fixation of the one or more eyes.. .

High efficiency optical combiner for multiple non-coherent light sources

An optical combiner that combines light from a plurality non-coherent light sources and directs it to a single output is described. The non-coherent light sources are arranged within a housing in a linear fashion, with light emitted from at least two of the non-coherent light sources directed towards a focusing lens by reflection from wavelength-selective mirrors, with the focus of the focusing lens directed to an input of an optical waveguide.
Uvlrx Therapeutics, Inc.

Athermal hybrid optical source

A hybrid optical source that provides an optical signal having a wavelength (or a narrow band of wavelengths) is described. This hybrid optical source includes an optical amplifier (such as a iii-v semiconductor optical amplifier) that is butt-coupled or vertically coupled to a silicon-on-insulator (soi) platform, and which outputs an optical signal.
Oracle International Corporation

Device for collecting solar energy

A device for gaining solar energy comprises a integral unit with a casing (10 . .
Suncycle B.v.

Method and arrangement for forming a structuring on surfaces of components by means of a laser beam

The invention relates to a method for forming a structuring at surfaces of components using a laser beam. In the invention, a laser beam is directed onto a diffractive optical element.
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Double-layer electrode for electro-optic liquid crystal lens

Certain exemplary embodiments can provide a system, machine, apparatus, device, manufacture, circuit, composition of matter, and/or user interface adapted for and/or resulting from, and/or a process, method, and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise and/or relate to, generating a gradient in an index of refraction of a material.. .
Kent State University

Assembly for analyzing a light pattern caused by refraction and reflection at a precious stone

The invention relates to an assembly (1) for analyzing a light pattern (3) caused by refraction and reflection at a precious stone (2), comprising a light source (4) for illuminating the precious stone (2), a retaining device (5) for retaining the precious stone (2), an in particular flat diffusing screen (6) for imaging the light pattern (3), and a camera (7) for recording the light pattern (3) imaged on the diffusing screen (6), wherein the assembly (1) comprises a semi-transmitting optical element (8) for deflecting, in the direction of the precious stone (2), the light (9) emitted by the light source (4) and for transmitting the light (10) refracted and reflected at the precious stone (2).. .
D. Swarovski Kg

Solar to electric energy conversion device

The present invention features a solar-to-electric energy conversion device based on a light absorbing electrode coupled to a one-dimensional nanoparticle based photonic crystal. The function of the latter is to localize the incident light within the electrode thus enhancing the optical absorption and the power conversion efficiency of the so called dye-sensitized and organic (polymer based or hybrids) cell.
Nlab Solar Ab

Light guide plate, backlight module, and display device

Disclosed is a light guide plate for use in a backlight module. The light guide plate includes a light incidence surface, a light exit surface, and a bottom surface opposite to the light exit surface.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Optics with built-in anti-reflective sub-wavelength structures

Optical elements having an intrinsic anti-reflective sub-wavelength structure (sws) built into one or more surfaces thereof so that the structure becomes integral part of the surface of the lens. The sws is in the form of a structure of identical or similar objects such as straight or graded cones, pillars, pyramids, or other shapes or depressions, where the dimensions of the objects and the distances between them are smaller than the wavelength of light with which they are designed to interact.
The Government Of The United States Of America, As Represented By The Secretary Of The Navy

Flow cytometry blocking diffraction patterns

Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (ias) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer.
Abbott Laboratories

Embossed frontlight systems and methods of forming same

This disclosure provides systems, methods and apparatus for forming light-guiding layers including embossed light-turning features. In one aspect, an aluminized polymer layer can be embossed onto a light-transmissive layer having a high index of refraction to form the light-guiding layer.
Qualcomm Mems Technologies, Inc.

Polarizing plate and liquid crystal display including the same

A polarizing plate and a liquid crystal display including the polarizing plate include: a polarizer; and a surface protective film on a first surface of the polarizer, and the surface protective film includes a first protective film on the first surface of the polarizer, and a primer layer on at least one surface of the first protective film, a refractive index ratio of the first protective film to the primer layer satisfying the equation: 0.6<r1/r2<1.0, where r1 is an index of refraction of the primer layer, and r2 is an index of refraction of the first protective film, and the first protective film has an in-plane retardation (re) of about 500 nm or less and an out-of-plane retardation (rth) of about 10,000 nm or less at a wavelength of 550 nm.. .
Samsung Sdi Co., Ltd.

Substrate with moth eye structures and manufacturing thereof

A substrate with moth eye structures and a method of manufacturing thereof are provided. The method includes: providing a substrate including a first surface and a second surface, and forming a plurality of moth eye structures on the first surface.
Asustek Computer Inc.

Coded-aperture x-ray imaging

A method of x-ray imaging includes passing an x-ray beam through a pre-sample mask 8 with a plurality of apertures 32, through a sample 10, and then through a detector mask 6 with aligned apertures 34. The beams are detected.
Ucl Business Plc

Backlight refraction lens

A backlight refraction lens includes a body formed with an incident face and an emergent face, wherein the incident face has a raised periphery and an axis formed with an angle with an axis of the body, the angle, between the axis of the incident face and the axis of the body, set between 35 degrees to 65 degrees such that the ray light going into the body along an incident angle within 15-45 degrees is mostly projected from the emergent face after being refracted. The backlight refraction lens promotes the visibility and identification of objects on the outdoor kanban board when the outdoor kanban board is in a backlight condition such that the conventional leds are unnecessary to the outdoor kanban board that has a series of backlight refraction lens in accordance with the present invention mounted thereon..

Light-emitting device

A light-emitting device includes a light-emitting body and an out-coupling film. The light-emitting body has a light-emitting surface.
Tatung University

Preparation process of the metamaterial with negative index of refraction

There is a preparation process of the metamaterial with a negative index of refraction, especially the lefthanded composite system (ceramic) built from iron and boron nitride fe:bn with a negative refractive index associated with negative values of the magnetic −μ and dielectric −£ permeability. Method of preparation of the fe:bn ceramic includes mixing fe nano or micro particles (synthesized from iron pentacarbonyl fe(co)s) with hexagonal boron nitride (h-bn), grinding the powders, compacting the powder in form of pellets at room temperature and low pressure, placing a pellet in a container (caco3) with graphite heater, and sintering the pellet from ambient pressure to 8 gpa and temperature from room temperature to 2000 degrees c.
Instytut Niskich Temperatur I Baden Strukturalnych Pan Im

Molds for making contact lenses

The present invention general related to a mold for making a contact lens comprises a first mold half having a first mold surface in contact with a polymerizable and/or crosslinkable silicone containing lens forming composition and a second mold half having a second mold surface in contact with the lens-forming composition, and the first mold half and the second mold half are configured to receive each other such that a cavity is formed between the first mold surface and the second mold surface. The cavity defines the shape of a contact lens to be molded.
Novartis Ag

Adaptive infrared retinoscopic device for detecting ocular aberrations

An ocular system for detecting ocular abnormalities and conditions creates photorefractive digital images of a patient's retinal reflex. The system includes a computer control system, a two-dimensional array of infrared irradiation sources and a digital infrared image sensor.

Laser oscillation mechanism

A laser oscillation mechanism includes a pulse laser oscillator which oscillates a pulse laser beam, and an optical path changing unit which changes an angle of an optical path of the pulse laser beam oscillated by the pulse laser oscillator. The optical path changing unit is configured from an acousto-optic deflection unit including an acousto-optic device for changing the optical path of the pulse laser beam oscillated by the pulse laser oscillator within an effective region, and a volume bragg grating which excludes, from among pulse laser beams obtained by changing the angle of the optical path of the pulse laser beam by passing through the acousto-optic device, a pulse laser beam desired to be eliminated by refraction from within the effective region..
Disco Corporation

Interlayer light wave coupling device

An interlayer light wave coupling device includes a substrate; a first core disposed on the substrate and having a first acute structure; a third core spatially set apart from the first core and having a second acute structure; and a second core disposed between the first core and the third core and having a smaller index of refraction than the first core and the third core. The acute structures of the first core and the third core are disposed so as to have no overlap as viewed from above..
National Institute Of Advanced Industrial Science And Technology

Light emitting device

A light emitting device (1) is provided comprising a light source (2) adapted for, in operation, emitting light (13) with a first spectral distribution, a first luminescent light guide (4) comprising a first light input surface (41) and a first light exit surface (42) extending at an angle different from zero to one another, and being adapted for receiving the light (13) with the first spectral distribution at the first light input surface (41), converting the light (13) with the first spectral distribution to light (14) with a second spectral distribution, guiding the light (14) with the second spectral distribution to the first light exit surface (42) and coupling the light (14) with the second spectral distribution out of the first light exit surface (42), and a first transparent heat sink element (3) arranged adjacent to at least one surface of the first luminescent light guide (4) and in the optical path between the light source (2) and the first luminescent light guide (4), the at least one surface being different from the light exit surface (42), wherein the first transparent heat sink element (3) is adapted for redirecting light by means of any one of refraction and diffraction.. .
Koninklijke Philips N.v.

Ultrathin light unit

Provided is a thin light unit for a display device that includes, for example, a high refraction film including an inclined portion at a first side of the high refraction film and a flat portion extended from the inclined portion to a second side of the high refraction film; a second member on the inclined portion at the first side of the high refraction film and having a first width; a first member on the flat portion in a middle of the second side of the high refraction film and separated from the second member; a third member on the flat portion and having the first width; and a light source adjacent to the first member at a side of the flat portion.. .
Covestro Deutschland Ag.

Polyorganosiloxane-containing graft copolymer, thermoplastic resin composition, and molded product

A resin composition having all of higher pigment colorability, low-temperature impact resistance, and flame retardance is provided. A graft copolymer is a polyorganosiloxane-containing graft copolymer formed by polymerizing one or more grafting vinyl monomers (b) in the presence of a rubber (a) containing polyorganosiloxane and a vinyl polymer, wherein the index of refraction of the rubber (a) is in the range of 1.47 to 1.56, and the volume-average particle size is in the range of 300 nm to 2000 nm.
Mitsubishi Rayon Co., Ltd.

Intrauterine balloon apparatus, system, and augmenting uterine birthing forces during parturition

An intrauterine balloon apparatus to augment uterine birthing forces and assist fetal descent during parturition is provided. The body of the balloon apparatus begins packaged in a compressed state minimizing volume, enabling delivery through the birth canal.
3vo Medical, Inc.

Methods for objectively determining the visual axis of the eye and measuring its refraction

Provided herein are methods for objectively determining a visual axis of an eye. An optical axis of a measuring instrument is aligned with an unambiguously determinable axis of the eye which is the pupillary axis crossing the vertex of an anterior surface of a cornea and perpendicular to the vertex.
Tracey Technologies, Corp.

Testing slide for microscopes equipped with water immersion or physiology objectives

A testing slide for microscopes equipped with water immersion objectives. The slide has a chamber containing a solid with an index of refraction similar to that of water.
Thorlabs, Inc.

Method for measuring temperature by refraction and change in velocity of waves with magnetic susceptibility

Methods and apparatuses for determining in-situ a temperature of a substrate with a thermal sensor in a vacuum chamber are described herein. In one embodiment a thermal sensor has a transmitter configured to transmit electromagnetic waves, a receiver configured to receive electromagnetic waves, and a controller configured to control the transmitter and receiver, wherein the controller determines a temperature from a difference between the transmitted electromagnetic wave and the received electromagnetic wave..
Applied Materials, Inc.

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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