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




 Apparatus and  enhancing human visual performance in a head worn video system patent thumbnailApparatus and enhancing human visual performance in a head worn video system
Visual impairment, or vision impairment, refers to the vision loss of an individual to such a degree as to require additional support for one or more aspects of their life. Such a significant limitation of visual capability may result from disease, trauma, congenital, and/or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, such as eyeglasses or contact lenses, medication, or surgery.
Esight Corp.


 High efficiency image sensor pixels with deep trench isolation structures and embedded reflectors patent thumbnailHigh 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 patent thumbnailChromatic 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.
Mitutoyo Corporation


 Thermal emission source and two-dimensional photonic crystal for use in the same emission source patent thumbnailThermal emission source and two-dimensional photonic crystal for use in the same emission source
A thermal emission source capable of switching the intensity of light at a high response speed similarly to a photoelectric conversion element. A thermal emission source includes: a two-dimensional photonic crystal including a slab in which an n-layer made of an n-type semiconductor, a quantum well structure layer having a quantum well structure, and a p-layer made of a p-type semiconductor are stacked in the mentioned order in the thickness direction, wherein modified refractive index areas (air holes) whose refractive index differs from the refractive indices of the n-layer, the p-layer and the quantum well structure layer are cyclically arranged in the slab so as to resonate with a specific wavelength of light corresponding to a transition energy between the subbands in a quantum well in the quantum well structure layer; and a p-type electrode and an n-type electrode for applying, to the slab, a voltage which is negative on the side of the p-layer and positive on the side of the n-layer..
Japan Science And Technology Agency


 Phosphor converted white light emitting devices and photoluminescence compounds for general lighting and display backlighting patent thumbnailPhosphor 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.
Intematix Corporation


 Image pickup device and  manufacturing image pickup device patent thumbnailImage pickup device and manufacturing image pickup device
An image pickup device having a pixel region in which pixels are arranged, and in which a multilayer wiring structure is disposed. Each pixel includes a photoelectric conversion unit, a charge accumulation unit, a floating diffusion, a light shielding portion covering the charge accumulation unit and opening above the photoelectric conversion unit, and a waveguide which overlaps at least partially a portion at which the light shielding portion opens in a plan view.
Canon Kabushiki Kaisha


 Method of refraction angle mapping of earth's limb patent thumbnailMethod 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.


 Holographic 3d recording device, reproducing device and display apparatus patent thumbnailHolographic 3d recording device, reproducing device and display apparatus
A holographic 3d recording device includes: a photorefractive crystal and a microlens array. The microlens array includes an array face and a side face.
Beijing Boe Chatani Electronics Co., Ltd.


 Reflective mask and  manufacturing reflective mask patent thumbnailReflective mask and manufacturing reflective mask
A reflective mask comprises a substrate, first and second stacked bodies, and an intermediate portion. The first stacked body is provided on a surface of the substrate.
Kabushiki Kaisha Toshiba


 Integrated light pipe for optical projection patent thumbnailIntegrated light pipe for optical projection
An optical device includes a first plate having a first transparent region defining an exit face of the device, and a second plate having a second transparent region defining an entrance face of the device. At least one lens is formed over at least one of the first and second transparent regions.
Apple Inc.


Spectacle lens

An aspect of the present invention relates to a spectacle lens including a multilayer film of a vapor deposition film (excluding a metal film and a metal alloy film) directly or indirectly at least on one surface of a lens substrate. The multilayer film includes at least one high refractive index layer and at least one low refractive index layer, the total optical film thickness of the high refractive index layer is λ/4 or more at a wavelength λ=780 nm, and a reflection spectrum measured in a wavelength range of 380 to 2000 nm on a surface having the multilayer film has a maximum reflectance in a wavelength range of 800 to 1350 nm..
Hoya Lens Thailand Ltd.

Securing a fresnel lens to a refractive optical element

A headset for virtual reality applications includes an optical element configured to modify light from an electronic display in the headset and to direct the modified light to a user. The optical element may include a fresnel lens secured to a lens by securing the fresnel lens to a mold and inserting a casting material into the mold so the casting material forms the lens and a portion of the casting material exists on and past an edge of the fresnel lens.
Oculus Vr, Llc

Projection lens system with magnification-varying capability and projector

A projection lens system includes a first lens group including a 1a-th lens group having a negative refractive power, a 1b-th lens group having a positive or negative refractive power, and a 1c-th lens group having a positive or negative refractive power. During a zoom, the first lens group remains stationary on an optical axis.
Konica Minolta, Inc.

Variable power optical system, optical device, and manufacturing variable power optical system

A variable magnification optical system comprises, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; a fourth lens group having positive refractive power; and a fifth lens group; upon varying magnification from a wide-angle end state to a telephoto end state, a distance between the first lens group and the second lens group, a distance between the second lens group and the third lens group, a distance between the third lens group and the fourth lens group and a distance between the fourth lens group and the fifth lens group being varied, the fifth lens group being moved with respect to the image plane; upon focusing the third lens group being moved along the optical axis; and the given conditional expressions being satisfied; thereby providing a small-size variable magnification optical system having a high variable magnification ratio and an excellent optical performance.. .
Nikon Corporation

Imaging lens assembly

An imaging lens assembly is provided in the present disclosure. The imaging lens assembly includes a first lens with positive refractive power; a second lens with negative refractive power; a third lens with negative refractive power; a fourth lens with positive or negative refractive power; a fifth lens with positive refractive power; and a sixth lens with negative refractive power.
Aac Technologies Pte. Ltd.

Lens assembly for portable devices

A lens assembly for portable devices comprises: an aperture stop, a plastic first lens element with positive refractive power having a convex object-side surface; a plastic second lens element with negative refractive power having a concave image-side surface and an object-side surface being concave in a peripheral region; a plastic third lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a plastic fourth lens element with positive refractive power having an image-side surface being concave in a paraxial region and convex in a peripheral region; and an ir-cut filter(infrared-cut filter);wherein the rimin represents the minimum ri(relative illumination) of effective field and it satisfies the following relation: 0.36<rimin<0.65.. .
Vista Optronics, Inc.

Laser device

A laser device is disclosed. The laser device includes a surface-emitting laser including a plurality of emission points, a lens array including a plurality of lenses arranged so as to correspond to a position of the surface-emitting laser; and a light condensing optical system that condenses a plurality of light fluxes emitted through the lens array and enters the condensed lights to an input end of an optical fiber.

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.

Optical package and a process for its preparation

A package including optical components has one or more structures with optical input or optical output. An optical interconnection optically connects to the optical input or optical output of the structure(s).
Multiphoton Optics Gmbh

Asymmetric waveguide configuration on a silicon nitride basis

A polarization dependent mode converter is provided on a semiconductor basis, having a waveguide made of a waveguide material comprising sinx, or another solid waveguide material having a refractive index between 1.7 to 2.3, embedded in a cladding material comprising sio2 or another solid cladding material having a refractive index between 1 and 1.6, wherein the waveguide includes in a portion along its lengthwise extension a first section having a vertical asymmetric configuration, the asymmetric configuration includes a thin layer of silicon above the waveguide material, the thickness of the thin si-layer in vertical direction is less than the thickness of the waveguide material in the same vertical direction.. .
Huawei Technologies Co., Ltd.

Low bend loss single mode optical fiber with chlorine updoped cladding

An optical fiber having both low macrobend loss and low microbend loss. The fiber has a central core region, a first (inner) cladding region surrounding the central core region and having an outer radius r2>16 microns and relative refractive index Δ2, and a second (outer) cladding region surrounding the first cladding region having relative refractive index, 43, wherein Δ1>Δ3>Δ2 .
Corning Incorporated

Optical fiber

Provided is an optical fiber having w-shaped refractive-index distribution and in which a micro-bend loss in an actual usage waveband is reduced. The optical fiber includes a core, inner cladding that surrounds the core and has a refractive index smaller than a refractive index of the core, and outer cladding that surrounds the inner cladding and has a refractive index smaller than the refractive index of the core and larger than the refractive index of the inner cladding.
Sumitomo Electric Industries, Ltd.

Infrared reflecting substrate and producing same

The infrared reflecting substrate includes a first metal oxide layer, a second metal oxide layer and a metal layer in this order on a transparent substrate. The second metal oxide layer and the metal layer are in direct contact with each other.
Nitto Denko Corporation

Adaptive optical devices with controllable focal power and aspheric shape

A fluidic lens may include an optical surface configured for deflection dominated by bending stress. An adjustable concentric load may be applied to the optical surface to cause a clear aperture region of the optical surface to deflect with generally spherical curvature.
Holochip Corporation

Transparent optical device element

The present invention relates to transparent optical device elements comprising a deformable lens body and to a method for changing the refractive index (ri) of a deformable lens body. The deformable lens body of the invention has an improved mechanical stability, a high refractive index, an optimal degree of stiffness and sheer modulus for use as optical lens..
Polight As

Optical element and photo detection device

An optical element includes a first surface and a second surface opposite to the first surface, and includes a first region. A refractive index of the first region is asymmetric with respect to a first axis.
Kabushiki Kaisha Toshiba

Optical article comprising an antireflective coating with a very low reflection in the visible and ultraviolet regions

This invention relates to an ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered antireflective coating comprising a stack of at least one high refractive index layer (hi) having a refractive index higher than or equal to 1.55 and at least one low refractive index layer (li) having a refractive index lower than 1.55, characterized in that: said at least one high refractive index layer (hi) is in direct contact with said at least one low refractive index layer (li) forming a bilayer, said bilayer has a physical thickness lower than or equal to 60 nm, said bilayer is, in the direction moving away from said transparent substrate, in second to last place in said multilayered antireflective coating, said multilayered antireflective coating has a mean reflection factor ruv between 280 nm and 380 nm, lower than 5% for an angle of incidence in the range from 20° to 50°.. .
Essilor International (compagnie Generale D'optique)

Device for measuring polarization degree and refractive index

A device includes a sample chamber (1) configured to receive the object, a polarization degree measuring member (2) configured to measure the polarization degree of the object received in the sample chamber (1), and a refractive index measuring member (3) configured to measure information corresponding to the refractive index of the object received in the sample chamber (1). The polarization degree measuring member (2) includes a polarization modulation member (11) configured to perform polarization modulation on a light beam (9) for analyzing the object and allow the modulated light beam to enter the sample chamber (1), an intensity detection member (12) configured to detect an intensity of the light beam (5) exiting from the sample chamber, and a polarization degree calculation member (13).
Atago Co., Ltd.

Artificial skylight and methods

An artificial skylight generally includes at least one light source, at least one first collimator, a prism sheet, and at least one transmissive material. The at least one first collimator is configured to collimate light from the at least one light source.
Innerscene, Inc.

Mixture that includes compound containing mesogenic group

Wherein yi represents a yellowness index of the mixture and Δn represents a refractive index anisotropy of the compound having a mesogenic group. In a case of producing an optical anisotropic body constituted by a composition prepared by using the compound, repellence hardly occurs, and the mixture exhibits excellent alignment properties in a case of using the optical anisotropic body.

Method for manufacturing hollow silica particles, hollow silica particles, and composition and thermal insulation sheet comprising same

Provided are hollow silica particles that have a refractive index of 1.2-1.4, a thermal conductivity of less than 0.1 w/m·k, an oil absorption rate of 0.1 ml/g or below, a porosity of at least 90% when mixed with a resin, and a particle distribution coefficient of variation (cv value) of 10% or below. Further provided are a composition comprising the hollow silica particles, and a transparent thermal insulation sheet which has a visible light transmittance of at least 70%, a thermal conductivity of less than 0.1 w/m·k, and a filling rate of particles of 30-80%..
Sukgyung At Co., Ltd .

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..
Elwha Llc

Optical diagnosis using measurement sequence

Devices, systems, and methods that facilitate optical analysis, particularly for the diagnosis and treatment of refractive errors of the eye. An optical diagnostic method for an eye includes obtaining a sequence of aberration measurements of the eye, identifying an outlier aberration measurement of the sequence of aberration measurements, and excluding the outlier aberration measurement from the sequence of aberration measurements to produce a qualified sequence of aberration measurements.
Amo Wavefront Sciences, Llc

Systems with integrated refractive and diffractive optics

An imaging system includes a refractive optical element and one or more diffractive optical gratings disposed over a two-dimensional array of photosensitive pixels. The different gratings present different patterns and features that are tailored to produce point-spread responses that emphasize different properties of an imaged scene.
Rambus Inc.

Mirror display apparatus and manufacturing the same

A mirror display apparatus includes a display unit, a thin film encapsulation layer, a plurality of mirror patterns, a protection layer and a refractive index matching layer. The display unit is disposed on a substrate.
Samsung Display Co., Ltd.

Component for the detection of electromagnetic radiation in a range of wavelengths and manufacturing such a component

A component intended for the detecting and/or the measuring of an electromagnetic radiation in a first range of wavelengths. The component includes a support including at least one first structure and a reception face in order to receive the electromagnetic radiation; an optical filter of the band-pass type in the first range of wavelengths arranged on the reception face of the support.
Commissariat A L'energie Atomique Et Aux Energies Alternatives

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.

Image capturing optical system

According to an embodiment of the present disclosure, an image capturing optical system includes a first lens group having a positive refractive power and disposed along an optical axis and to face an object. A second lens group has a negative refractive power and disposed along the optical axis and adjacent to the first lens group, and second lens group includes a focus correction lens to correct a difference in a focused position according to a variation in a position of the object.
Samsung Electronics Co., Ltd.

Cube polarizer

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.. .

Zoom lens and image pickup apparatus using the same

A zoom lens includes a front unit having a negative refractive power and a rear unit having a positive refractive power, which includes an aperture stop, and the front unit includes a first lens having a negative refractive power, and the first lens has a meniscus shape of which a convex surface is directed toward the object side, and the rear unit includes a first lens unit a and a second lens unit b, and at the time of zooming from a wide angle end to a telephoto end, a distance between the front unit and the rear unit changes.. .
Olympus Corporation

Projection apparatus and projection lens

A projection lens disposed between a screen side and an image side and including a first lens group and a second lens group is provided. Refractive powers of the first lens group and the second lens group are respectively negative and positive.
Coretronic Corporation

Imaging lens

An imaging lens which uses a larger number of constituent lenses for higher performance and features compactness and a wide field of view. The imaging lens is composed of seven lenses to form an image of an object on a solid-state image sensor.
Kantatsu Co., Ltd.

Optical image capturing system

A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power and a sixth lens with refractive power.
Ability Opto-electronics Technology Co.ltd.

Optical image capturing system

A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power and a sixth lens with refractive power.
Ability Opto-electronics Technology Co.ltd.

Multimode optical fibers operating over an extended wavelength range and system incorporating such

According to some embodiments, a multimode optical fiber comprises a graded index glass core with refractive index Δ1, a maximum refractive index delta Δ1max, and a core radius between 10 and 40 microns; and cladding region surrounding the core comprising refractive index Δ4, wherein the fiber exhibits an overfilled bandwidth exhibits an overfilled bandwidth of at least 3 ghz-km at a wavelength of 850 nm and an overfilled bandwidth of at least 1.2 ghz-km at one or more wavelengths between 980 and 1060 nm.. .
Corning Incorporated

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

Infrared filter

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

Refractive coatings for a colored surface of an electronic device

A refractive coating such as a white layer is disposed on a housing component of a portable electronic device. The refractive coating includes pigment particles such as titanium dioxide suspended in a carrier medium such as a polymer matrix.
Apple Inc.





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This listing is a sample listing of patent applications related to Refract 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 Refract with additional patents listed. Browse our RSS directory or Search for other possible listings.


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