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7573645 Method for manufacturing optical element of refractive index distribution type  
The present invention provides a method of producing a graded refractive index optical element, the method being capable of easily forming a graded refractive index distribution in a desired...
7564631 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...
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....
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...
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...
7262924 Optical system and image pickup apparatus including the same  
At least one exemplary embodiment is directed to an optical system which includes a compound optical element including a lens element and a resin layer having different optical characteristics and...
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...
7010202 Variable field of view optical system  
A variable field of view optical system and method comprising providing a forward curved optical element, providing a rearward optical element comprising an axially gradient index material,...
7002754 Multilayer polymer gradient index (GRIN) lenses  
Disclosed are axial, radial or spherical gradient index (GRIN) lenses fabricated by layering composite polymer films into an hierarchical structure.
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...
6914727 Imaging optical system  
An imaging optical system which images a line image extending in a main scanning direction in a two-dimensional image as an erected image at a unit magnification in the main scanning direction...
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...
6894846 Optical add/drop apparatus and the method for making the same  
New designs of optical devices, particularly for adding or dropping a selected wavelength or a group of wavelengths are disclosed. In one embodiment, an optical filter is positioned a distance from...
6833965 Optical element using organic-inorganic composite material  
A lightweight and homogeneous optical element exhibiting favorably weak birefringence and hygroscopicity as well as superior productivity and producing minimal chromatic aberrations is formed by...
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...
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...
6738544 Thermally-shaped optical fiber and a method for forming the optical fiber  
A thermally-shaped optical fiber and a method for forming the same so as to minimize the presence of optical artifacts in the optical fiber that contributes to insertion loss.
6714354 Grin lenses, devices and methods of manufacture  
Graded index lenses, methods, and devices are disclosed. In certain embodiments, he lenses are made from generally cylindrical glass members having a radially varying refractive index and have a...
6661581 Graded index microlenses and methods of design and formation  
A microlens has a material composition gradient that varies along the z-axis of the microlens to provide desired refractive properties in conjunction with the surface shape of the microlens. A...
6643071 Graded-index lens microscopes  
An optical microscope includes a compound GRIN objective and a lens system. The compound GRIN objective is able to form an image of an object located near one end of the GRIN objective. The...
6606199 Graded thickness optical element and method of manufacture therefor  
A graded optical element is provided that includes graded layers of optical material, wherein the layers may or may not have different indexes of refraction. A method for making such a graded...
6511932 Graded index lens  
A graded index lens is obtained by treating a raw glass material having a rod shape by ion exchange using silver to form a refractive index distribution in the radial direction of the rod, wherein...
6229654 Article with radial refractive index gradient and process for its manufacture  
The transparent article with radial gradient index, according to the invention, comprises a matrix made of a first transparent polymer having a first refractive index n 1 and a first Abbe number...
6130787 Optical system and optical module  
An optical system comprising a radial type gradient index lens element which has a negative refractive power of medium and a negative refractive power as a whole, and a radial type gradient index...
6089711 Radial gradient contact lenses  
A radial gradient contact lens is provided. The methodology described above allows the parameters of the lens and of the radial gradient profile to be chosen to improve the vision and the comfort...
6066273 Axial refractive index distributed lens  
An excellent axial refractive index distributed lens is disclosed, which has a refractive index distribution required for an optical design, high durability, and high quality (a low melting...
5986818 Gradient index aspherical lens  
A gradient index lens has a base lens and a resin layer. The resin layer is formed on a surface of the base lens. The resin layer has an aspherical surface. The base lens has a gradient index.
5978146 Rod lens array and life-size imaging optical apparatus using the same  
In a rod lens array in which a plurality of rod lenses each having a refractive-index distribution in the radial direction are arranged in one row such that the optical axes are parallel to each...
5953162 Segmented GRIN anamorphic lens  
A segmented GRIN anamorphic lens and a lens array using such lenses are provided. The lens has an optical axis and is composed of a plurality of segments. The interfaces between the segments are...
5936777 Axially-graded index-based couplers for solar concentrators  
An optical coupler is provided that comprises a single lens component, comprising two axially-graded index of refraction elements, each having a low refractive index surface and a high refractive...
5861934 Refractive index gradient lens  
An optical product such as an optical lens, or semi-finished lens blank is provided comprising a composite of at least three different and separately applied layers, each layer having a different...
5796525 Quadaxial gradient index lens  
An axially-based lens is provided, comprising two biaxial elements, each having entrance and exit surfaces. The exit surface of one of the elements is joined to the entrance surface of the other...
5703722 Segmented axial gradinet array lens  
A segmented axial gradient array lens is provided. In one embodiment, the segmented array lens includes two sheets of optical material which mate at opposing faces which have a series of...
5680249 Optical system for camera  
An optical system for a compound camera includes an equivalent image plane provided at a position substantially optically equivalent to an image plane of the photographing lens system. A condenser...
5671034 Polarisation dependent refractive device exhibiting independtly varying first and second indices of refraction and methods of manufacture thereof  
A birefringent element is patterned such that for light of a first polarisation the element acts as a first refractive optical element and for light of a second polarisation the optical response of...
5621574 Objective lens system utilizing axial gradient index (grin) lens elements  
Axial gradient index of refraction lens elements are used in a lens system, for instance for a photographic objective lens, to correct monochromatic and chromatic lens aberrations, thereby reducing...
5617252 Gradient refractive index lens elements  
A lens element (40) is formed from a monolithic unit (46) having two sections (46A and 46B) aligned on an optical axis. A selected one of the sections has an axial gradient refractive index, and...
5579168 Zoom lens system with gradient index lens  
A zoom lens system comprises in the following order from the object side: a first lens group of a positive refracting power; a second lens group of a negative refracting power; a third lens group;...
5568320 Multiple row lens array alignable with multiple row image bar  
In an optical system, a lens array comprises a plurality of gradient index lenses arranged in a plurality of rows. The lens array is aligned with an image bar having a plurality of pixel rows in...
5559638 Wide-angle lens system #6  
A wide-angle lens system comprising, in order from the object side, a front unit, a stop and a rear unit: the front unit comprising, in order from the object side, a first lens unit which comprises...
5541774 Segmented axial gradient lens  
A segmented axial gradient lens and a lens system using such lenses are provided. The lens has an optical axis and is composed of a plurality of segments. The interfaces between the segments are...
5532871 Two-wavelength antireflection film  
A two-wavelength antireflection film includes a substrate and an alternate film. The alternate film consists of alternately laminated layers of a low refractive index material and an intermediate...
5504623 Lead glass composition series for gradient glasses  
A fused glass block having an axial gradient index of refraction profile between two opposed parallel surfaces, with a change in refractive index from one of the surfaces to the other ranging from...
5416863 Mode-field transforming optical waveguide  
In accordance with the invention, a mode-field transforming waveguide region comprise an elongated glass core surrounded by glass cladding wherein the normalized index differential between the...
5392431 TV projection lens including a graded index element  
A projection TV lens (60) includes first (64), second (66), third (70), and fourth (72) element-groups counted in numerical order and arranged on a common optical axis (62). The first, third, and...
5323268 Compound lens  
A spherical recess is provided to one end wall of a first planar lens and the opposite end walls of a second planar lens, the first planar lens having a thicknesswise index distribution in the...
H001321 Riflescope utilizing gradient index lenses  
Riflescope arrangement includes a tube containing an eye piece section fowed by a relay section which is followed by an objective section. The eye piece, relay and objective sections lie along and...
Matches 1 - 50 out of 78 1 2 >