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Refract

Refract-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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NEW Dual field of view annular folded optics with switchable mirrored surface
United States Of America, As Represented By The Secretary Of The Army
June 22, 2017 - N°20170180643

An optical system that images a scene at two different fields of view, with switching between fields of view enabled by switchable mirrored surface is disclosed. The two fields of view vary in focal length by a factor of three. Both the wide field of view configuration and the narrow field of view configuration image broad-band short wave infrared radiation ...
NEW Image pickup apparatus and camera
Canon Kabushiki Kaisha
June 22, 2017 - N°20170180628

An image pickup apparatus including a focus detection pixel configured to perform focus detection by a phase difference method, is provided. The focus detection pixel comprises a photoelectric conversion unit arranged in a substrate, a microlens arranged above the photoelectric conversion unit, and a light guide arranged between the photoelectric conversion unit and the microlens. A refracting power of the ...
NEW Optical fiber, fiber amplifier, and fiber laser
Fujikura Ltd.
June 22, 2017 - N°20170179670

Provided is an optical fiber including a low-refractive-index layer that is disposed between a first cladding and a second cladding and that has a refractive index between those of the first and second claddings. The first cladding has a cladding diameter that is 2. 5 or more times the mfd of the fundamental mode at a fluorescence wavelength of an active element ...
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NEW Color separation element array, image sensor including the same, and electronic device
Samsung Electronics Co., Ltd.
June 22, 2017 - N°20170179178

A color separation element array, an image sensor including the color separation element array, and an electronic device including the color separation element array are provided. The color separation element array includes a plurality of color separation elements configured to separate an incident light into a color light according to wavelength bands in a transparent layer, the plurality of color ...
NEW Random eye generation systems and methods
Amo Development, Llc
June 22, 2017 - N°20170177828

Random human eye generators are provided for use in evaluating aspects of treatment in refractive surgery or other therapeutic vision modalities. Exemplary random eye generators include an optical parameter such as a manifest refractive sphere parameter or a wavefront sphere parameter, and incorporate a rayleigh distribution for such parameters.
NEW Lens array substrate, method of manufacturing lens array substrate, electro-optical device, and electronic apparatus
Seiko Epson Corporation
June 22, 2017 - N°20170176812

A lens array substrate includes a substrate with a concave portion provided in a first face thereof, and a lens layer having a substantially flat surface provided to cover the first face and fill the concave portion. The lens layer includes a first layer and a second layer which are sequentially laminated from a substrate side by reflecting the shape ...
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NEW Semiconductor waveguide structure
Yissum Research Development Company Of The Hebrew University Of Jerusalem Ltd.
June 22, 2017 - N°20170176780

A waveguide device is provided. The device comprises a semiconductor waveguide structure and at least one charge storing structure. Said at least one charge storing structure is configured to apply selected electric field on the semiconductor waveguide structure to thereby vary refractive index within said semiconductor waveguide structure. Wherein the charge storing structure comprises a charge trapping layer configured for ...
NEW Lenses, devices, methods and systems for refractive error
Brien Holden Vision Institute
June 22, 2017 - N°20170176772

The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to ...
NEW Zoom objective lens
Brien Holden Vision Institute
June 22, 2017 - N°20170176731

The refractive power of the fourth lens group is negative.
NEW Total internal reflection aperture stop imaging
The Regents Of The University Of California
June 22, 2017 - N°20170176730

In some example embodiments, there is provided an apparatus comprising a lens comprising a first medium having a first index of refraction and a second medium having a second index of refraction, wherein the first index of refraction is greater than the second index of refraction; wherein an interface between the first medium and the second medium is convex, and ...
NEW Projection zoom lens
The Regents Of The University Of California
June 22, 2017 - N°20170176729

Disclosed is a projection zoom lens used in an image display device configured to project an image onto a target projection surface and display a magnified image of the image, in which the projection zoom lens has a five-lens-group configuration in which first to fifth lens groups g1 to g5 are arranged from the magnification side toward the reduction side, ...
NEW Variable power optical system, optical device, and method for producing variable power optical system
Nikon Corporation
June 22, 2017 - N°20170176727

A variable magnification optical system comprises, in order from an object side, a first lens group (g1) having positive refractive power, a second lens group (g2) having negative refractive power, and a third lens group (g3) having positive refractive power. The first lens group (g1) comprises a front group (g11) having negative refractive power and a rear group (g12) having ...
NEW Zooming optical system, optical apparatus and method for manufacturing zooming optical system
Nikon Corporation
June 22, 2017 - N°20170176726

A compact zooming optical system, an optical apparatus and a method for manufacturing the zooming optical system having a vibration reduction function, a high zooming ratio, a wide-angle view and superb optical performance are provided, the system including, in order from an object side: a first lens group g1 having positive refractive power; a second lens group g2 having negative ...
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  • 1676+ full patent PDF documents of Refract-related inventions.
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NEW Lens system, image capturing unit and electronic device
Largan Precision Co.,ltd.
June 22, 2017 - N°20170176722

A lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has a concave image-side surface in a paraxial region. The second lens element ...
NEW Single focus lens and photographing apparatus having the same
Samsung Electronics Co., Ltd.
June 22, 2017 - N°20170176721

A single focus lens and a photographing apparatus including the single focus lens are provided. The photographing apparatus includes a single focus lens comprising: a first lens group having a positive refractive power, the first lens group including a first negative lens and a second negative lens arranged in succession at a most object side of the first lens group; ...
NEW Photographing lens and photographing apparatus
Samsung Electronics Co., Ltd
June 22, 2017 - N°20170176720

A photographing lens and a photographing apparatus including the same. The photographing lens includes a first lens having a positive refractive power or a negative refractive power and being meniscus shaped; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power and having a surface convex ...
NEW Camera lens
Aac Technologies Pte. Ltd.
June 22, 2017 - N°20170176719

A camera lens is disclosed. The camera lens comprises, from an object side to an image side, a first lens with positive refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with negative refractive power; a fifth lens with positive refractive power; and a sixth lens with negative refractive power. ...
NEW Photographic lens optical system
Kolen Co., Ltd.
June 22, 2017 - N°20170176718

Provided are lens optical systems. A lens optical system includes first to third lenses sequentially arranged in a direction from an object to an image sensor. The first lens may have a positive refractive power and an entrance surface convex toward the object. The second lens may have a negative refractive power and a meniscus shape convex toward the image ...
NEW Optical image capturing system
Ability Opto-electronics Technology Co.ltd.
June 22, 2017 - N°20170176717

A four-piece optical lens for capturing image and a four-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; and a fourth lens with positive refractive ...
NEW Optical image capturing system
Ability Opto-electronics Technology Co.ltd.
June 22, 2017 - N°20170176716

A four-piece optical lens for capturing image and a four-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; and a fourth lens with positive refractive ...
NEW Optical device for observing an object, minimising the internal reflection phenomenon
Lrx Investissement
June 22, 2017 - N°20170176715

A lens unit for observing an object, comprises an optical system comprising one or more successive lenses, and an optical device, comprising: at least one first optical element of the lens type, defining a front surface and a rear surface, the first optical element being produced from an optically transparent material and having a refractive index “n1ȁ...
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