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7453653 Low height imaging system and associated methods  
Low height imaging systems may include one or more optical channels and a detector array. Each of the optical channels may be associated with one or more detectors of the array, have one or more...
7428106 Optical field flatteners  
Field flatteners that can correct large field curvatures.
7426328 Varying refractive index optical medium using at least two materials with thicknesses less than a wavelength  
An optical medium has a graded effective refractive index with a high maximum refractive index change. The medium is formed using alternating layers of two or more materials having significantly...
7426079 Optical system  
At least one exemplary embodiment is directed to A retro focus optical system that is capable of sufficiently correcting and/or reducing various aberrations including the chromatic aberration. The...
7411738 Composite lens and method for manufacturing the same  
An exemplary composite lens includes a main body and an embedding member. The main body has a first surface and an opposite second surface. The main body has an optical axis associated therewith....
7405883 Optical component and method of manufacture of optical component  
An optical component or optical low-pass filter has two or more regions demarcated by differences in refractive indexes, in which a region having a refractive index different from the refractive...
7382541 Gradient-index rod lens, and rod lens array and image processor using the same  
A gradient-index rod lens is provided that is excellent in yield. The gradient-index rod lens has a core/clad structure and is obtained by providing a mother glass rod, which includes a core glass...
7379645 Optical fiber with fresnel diffraction  
An optical fiber being optically transmissive at a predetermined wavelength of light λ and comprising a plurality of coaxial layers. Each layer having an optical path length that varies radially,...
7359123 Optical field flatteners and converters  
Optical field flattener and converter having an array of gradient index rod lenses. Each gradient index rod lens is substantially in proximity with at )east one other gradient index rod lens. The...
7345826 Optical scanning lens, optical scanning device and image forming apparatus  
An optical scanning lens used in a scanning and imaging optical system in which a beam deflected by a light deflector is condensed on or in the vicinity of a surface to be scanned. The optical...
7324286 Optical beam steering and switching by optically controlled liquid crystal spatial light modulator with angular magnification by high efficiency PTR Bragg gratings  
Non-mechanical optical beam steering and switching is produced by optically controlled liquid crystal spatial light modulator with angular magnification by high efficiency volume Bragg gratings...
7317579 Method and apparatus providing graded-index microlenses  
Microlenses are fabricated with a refractive-index gradient. The refractive-index gradient is produced in a microlens material such that the refractive index is relatively higher in the material...
7310473 Optical antenna and wireless optical system using the same  
A light concentrator for an optical antenna gradually narrows from the light receiving end to the end in contact with a light detector, and has a refractive index that gradually increases from the...
7292394 Lens system  
A lens system ( 10 ) includes a main lens ( 12 ) having a first surface ( 12 a ) and a second surface ( 12 b ) configured opposite to each other, a first film lens ( 11 ) and a second film lens (...
7262921 Illuminating optical system for endoscope  
An endoscope illuminating optical system having a gradient index lens capable of illuminating by a sufficient light amount and by a wider angle is provided. The endoscope illuminating optical...
7256941 Lens array  
An optical lens array featuring low cost and simple manufacture. The lens array has two lens sections separated by spacers, with a stop on the front surface. An optional wraparound frame protects...
7250383 Clad glass composition for graded-index rod lens, graded-index rod lens, and method for manufacturing the same  
It is an object of the present invention to provide a clad glass composition for graded-index rod lens for covering, during manufacturing, a preform glass composition lens of a graded-index rod...
7248415 Optical deflector  
Provided is an optical deflector for deflecting radiation beams. The optical deflector includes: a peripheral region having a first effective refractive index; and a deflection pattern region...
7224533 Optically retro-reflecting sphere  
An optically retro-reflecting sphere includes an inner sphere and an outer concentric spherical shell, and can be coupled to a reflective surface. Light entering the optically retro-reflecting...
7180642 Imaging lens, image reader using the lens, and imaging apparatus using the image reader  
An imaging lens comprises a first, a second, a third, and a fourth lens group from an object toward an image. The first lens group includes a first lens that is a convex meniscus lens with a convex...
7173767 Focusing device  
A focusing device with a refractive index profile changing from the center of the focusing device towards its perimeter, is made of a material wherein the lateral refractive index distribution of...
7170688 Retroreflective device comprising gradient index lenses  
A retroreflective device comprising a substantially spherical graded refractive index lens, referred to as a GRIN-sphere lens ( 2 ), a reflective part for retroreflecting ( 6 ) a radiation beam (B)...
7167317 Objective optical system employing grin lens  
Provided is an objective optical system employing a gradient index (GRIN) lens. A refractive index of the GRIN lens is changed in an axial direction and a direction perpendicular to the axial...
7158309 Glass optical element and method for producing the same  
The invention provide a glass optical element which contains an alkaline metal oxide and an alkaline earth metal oxide, comprising an end portion that contains a fluoride ion or a fluorine compound...
7154685 Manufacturing method of rod with optical thin film and rod block for use in the method  
A method for manufacturing a rod with an optical thin film which comprises forming a rod block by arranging a plurality of rods each having a circular cross section in parallel to one another along...
7130130 Optical scanning lens, optical scanning device and image forming apparatus  
An optical scanning lens used in a scanning and imaging optical system in which a beam deflected by a light deflector is condensed on or in the vicinity of a surface to be scanned. The optical...
7113319 Photonic crystal and optical waveguide elements  
A photonic crystal having a structure of which the refractive index changes with a periodicity defined in a polar coordinate system is disclosed. And an optical waveguide element comprising said...
7102177 Light-emitting diode incorporating gradient index element  
The light-emitting device includes a light source and a gradient index (GRIN) element. The GRIN element has a cylindrical refractive index profile in which the refractive index varies radially and...
7096058 Laser blood-flow meter and system for monitoring bio-data  
A laser blood-flow meter includes a laser-beam irradiator for irradiating laser beams to biological structure, a detector for detecting scattered beams resulted from scattering of the laser beams...
7072127 Optical scanning lens, optical scanning device and image forming apparatus  
An optical scanning lens is used in a scanning and image forming optical system which gathers a light flux deflected by a light deflector in the vicinity of a surface to be scanned. The lens is...
7068438 Grin-lens arrangement  
A lens arrangement for transforming a divergent, generally astigmatic laser beam from a diode laser into a beam having a high degree of rotational symmetry is disclosed. The arrangement comprises,...
7054070 Gradient-index lens and composite optical element utilizing the same  
A gradient-index lens is structured by a multilayer film that includes therein a plurality of layers each of which has different refractive index and layer thickness from the other.
7042647 Scanning optical system  
A scanned optical system for use in optical probing applications provides a large Field of View (FOV) for objective lenses having high Numerical Aperture (NA), such as Solid Immersion Lenses...
7012721 Optical imaging system with rod lens array  
An optical imaging system is provided that includes a rod lens array and has the optimum refractive index distribution for achieving a high resolving power. The refractive index distribution of rod...
6990271 Multi-bandwidth collimator  
A collimator for use at multiple wavelengths includes an optical fiber and a gradient index lens positioned at a constant distance with respect to an end of the optical fiber. The gradient index...
6989938 Wavefront aberrator and method of manufacturing  
The wavefront aberrator of the present invention includes a pair of transparent windows, or plates, separated by a layer of monomers and polymerization initiator, including a broad class of...
6943954 Rod lens array and a process for producing the same  
An aligning tool having a plurality of grooves formed side by side is provided; gradient index rod lenses are placed in alignment within the grooves at an average spacing of 1 μm-5 μm; the...
6909557 Optical coupling system and optical device using the same  
Two lenses are used for forming a collimator parallel pair, in which the distance between the two lenses is substantially made coincident with the maximum distance allowing beam waists to be formed...
6903877 Gradient-index lens, and method for producing the same  
A micro prismatic structure is formed inside the light transmission face of a gradient-index lens, in which the projections have a height of at least 0.25 λ and the distance between the...
6891678 Lens for optical scanning, optical scanner, and image forming apparatus  
A lens for optical scanning condenses luminous flux deflected by an optical deflector to a plane to be scanned in a scanning image forming optical system. The lens is made of a plastic material by...
6856438 Optical scanning lens and apparatus capable of effectively generating accurately-pitched light spots, and image forming apparatus using the same  
An optical scanning lens used in a multi-beam scanning optical apparatus including a first mechanism reforming the light beams into line images, a deflecting mechanism reforming the light beams...
6831791 Optical system for optical communications and method of manufacturing the same  
An optical system for optical communications is composed of a transparent material having a refractive index distribution formed by changing the molar ratio of metal oxide with valence of 2 or...
6816319 Planar lens  
The planar lens of the invention having a flat glass substrate, in which a refractive index distribution is formed by diffusing a refractive index-increasing component into the flat glass substrate...
6809868 Rod lens array and a process for producing the same  
An aligning tool having a plurality of grooves formed side by side is provided; gradient index rod lenses are placed in alignment within the grooves at an average spacing of 1 μm-5 μm; the...
6801374 Molded lens, scanning lens, optical scanner and image forming apparatus  
The present invention provides a plastic lens, used in an optical system of an optical image recording apparatus, which is low in birefringence, and is less susceptible to displacement of focus...
6788472 Image pickup device  
In an image pickup device, a single refractive index distribution lens having a refractive index distribution which is substantially proportional to the square of the distance from an optical axis...
6780274 Fabrication of collimators employing optical fibers fusion-spliced to optical elements of substantially larger cross-section areas  
A fiber collimator is provided, comprising at least two optical components, one of the optical components (e.g., an optical element such as a collimating lens or a plano-plano pellet) having a...
6776537 Light source-optical fiber coupler  
A light source-optical fiber coupler using a gradient index rod lens 12 by which a diffused luminous flux emitted from a light source (for example, a semiconductor laser 10 ) is coupled onto an...
6764972 Mother glass composition for graded index lens  
A compositional range for a mother glass composition for graded index lenses which has a desired refractive index and is less apt to be devitrified and to develop cracks upon ion exchange was...
6758935 Fabrication of collimators employing optical fibers fusion-spliced to optical elements of substantially larger cross-sectional areas  
A fiber collimator is provided, comprising at least two optical components, one of the optical components (e.g., an optical element such as a collimating lens or a plano—plano pellet) having a...
Matches 1 - 50 out of 253 1 2 3 4 5 6 >