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| Number | Title | Issue Date |
| 8189265 | Optical element having refractive index distribution and optical apparatus An optical element Ggi1 includes a medium that has a refractive index distribution. This optical element satisfies conditions of |θgF(pmax)−θgF(pmin)|≧0.02, |ΔθgFgi(p1)|≧0.0272,|Δθgdgi(p1)|≧0.0250, and |θgFgi(pmaxgi)−θgFgi(pmingi)|≦0.1. | 05/29/2012 |
| 8159753 | Optical system with variable field depth An optical lens which, in a controlled manner, and without altering either the resolution or luminous capture, helps to extend the depth of field of any other optical system. The optical lens of the present invention is composed of two optical lenses that form a pai... | 04/17/2012 |
| 8098440 | High-order aberration correction for optimization of human visual function The present invention relates to the optimization of human visual function by correcting and/or optimizing high-order optical aberrations in high performance optical devices. The optimization is particularly useful for high performance devices used under low light c... | 01/17/2012 |
| 8085472 | Expanded beam interface device and method for fabricating same An optoelectronic device comprising a gradient index lens having an optical length, L, wherein L=P/4+NP/2, where N is an integer equal to or greater than 0 and P is the pitch of the gradient index lens. If the desired focus spot is spaced from the end face of the gr... | 12/27/2011 |
| 7969660 | Materials and methods for producing lenses The subject invention provides methods for creating wavefront aberrators with a desired refractive index profile that is stable against thermal and/or solar exposure. The invention further provides wavefront aberrators produced according to the methods described her... | 06/28/2011 |
| 7969659 | Grin lens microscope system A device for magnifying an object comprising an SSID having at least one imaging array disposed on a distal end thereof. The device further comprises a first optical element disposed on the distal end of the SSID wherein the first optical element has a distal end an... | 06/28/2011 |
| 7876504 | Optical die with variable refractive index, adaptive of angle of incidence, and method of fabricating such a die An optical die, which is intended to be placed in front of an optical sensor of a semiconductor component, has an optically useful zone having an optical axis and exhibiting a variable refractive index. Specifically the refractive index of the die is variable in an ... | 01/25/2011 |
| 7848026 | Chirped metamaterials An apparatus includes a medium that is a metamaterial over a frequency range. The medium includes a stack of layers or slabs. A mechanical, electrical, or magnetic property of the layers or slabs of the stack varies monotonically between neighboring ones of the laye... | 12/07/2010 |
| 7701641 | Materials and methods for producing lenses The subject invention provides methods for creating wavefront aberrators with a desired refractive index profile that is stable against thermal and/or solar exposure. The invention further provides wavefront aberrators produced according to the methods described her... | 04/20/2010 |
| 7697212 | High-order aberration correction for optimization of human visual function The present invention relates to the optimization of human visual function by correcting and/or optimizing high-order optical aberrations in high performance optical devices. The optimization is particularly useful for high performance devices used under low light c... | 04/13/2010 |
| 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 portion of a glass substrate without the need for a specific treatment atmo... | 08/11/2009 |
| 7570432 | Metamaterial gradient index lens Examples of the present invention include a gradient index element formed from a material such as a metamaterial, the material having an index profile and an index gradient profile, where the index profile includes at least one discontinuity and the index gradient p... | 08/04/2009 |
| 7499221 | Optical apparatus An optical apparatus includes an optical element that is made of a medium exhibiting negative refraction. A correction varies a wavelength of light used, thereby correcting a variation in image forming capability, which occurs due to one of a variation in refractive... | 03/03/2009 |
| 7428106 | Optical field flatteners Field flatteners that can correct large field curvatures. ... | 09/23/2008 |
| 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 optical system includes a refractive optical element including a soli... | 09/16/2008 |
| 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 different refractive indices. The thickness of the layers of at least o... | 09/16/2008 |
| 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. The embedding member is disposed in the main body between the first su... | 08/12/2008 |
| 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 index of the continuous region with the largest volume among the two or... | 07/29/2008 |
| 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 mother composition and a clad glass mother composition, with a refrac... | 06/03/2008 |
| 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, the coaxial layers being arranged to give the fiber a refractive inde... | 05/27/2008 |
| 7357005 | Fiber optic collimator system, fiber optic collimator array, and manufacturing method of the fiber optic collimator system and fiber optic collimator array system A fiber optic collimator system, a fiber optic collimator array, and a fiber optic collimator array system, which can reduce difficulty in an alignment process, minimize a coupling loss, and prevent the optical characteristics from deteriorating. An optical fiber is... | 04/15/2008 |
| 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 array is capable of receiving electromagnetic radiation and imaging th... | 04/15/2008 |
| 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 scanning lens is formed through plastic mold, and a distribution of the r... | 03/18/2008 |
| 7336988 | Multi-photon endoscopy An apparatus includes an optical element, a GRIN lens, and a detector. The optical element has a first optical aperture. The GRIN lens has first and second ends. The first end of the GRIN lens is positioned to receive light from the first optical aperture. The detec... | 02/26/2008 |
| 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 recorded in a photosensitive PTR glass. Small angle beam deflection in a... | 01/29/2008 |
| 7319285 | Optical device, illumination apparatus using the device, and projector using the illumination apparatus An optical device which leads light beams emitted by a light source to a predetermined illumination area comprises first and second light leading members. The first light leading member includes a first incident surface configured to be entered the light beams emitt... | 01/15/2008 |
| 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 nearest the substrate, and becomes progressively lower as the layer get... | 01/08/2008 |
| 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 first to the second end, to afford a greater acceptance angle for the... | 12/18/2007 |
| 7293871 | Apparatus and method of correcting higher-order aberrations of the human eye The wavefront aberrator is applicable to correct aberrations of the human eye. In one embodiment, the aberrator device comprises a pair of transparent lenses separated by a layer of curable resin comprising monomers and polymerization initiators. By controlling the ... | 11/13/2007 |
| 7292394 | Lens system A lens system (10) includes a main lens (12) having a first surface (12a) and a second surface (12b) configured opposite to each other, a first film lens (11) and a second film lens (13) respectively secured on... | 11/06/2007 |
| 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 system is constituted to illuminate an observed region by light guided by ... | 08/28/2007 |
| 7260298 | Fiber optical illumination system A fiber optical illumination delivery system, which is effective in reducing the effects of source coherence. The system preferably utilizes either a single bundle of optical fibers, or serial bundles of optical fibers. In the single bundle embodiment, the differenc... | 08/21/2007 |
| 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 the lens array from external light. The spacers and stop, as well as t... | 08/14/2007 |
| 7249847 | Eyeglass manufacturing method using variable index layer An eyeglass lens and manufacturing method using epoxy aberrator includes two lenses with a variable index material, such as epoxy, sandwiched in between. The epoxy is then cured to different indexes of refraction that provide precise corrections for the patient's wa... | 07/31/2007 |
| 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 lens that does not include PbO, in which the composition substantially d... | 07/31/2007 |
| 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 having a predetermined shape and a second effective refractive index, wher... | 07/24/2007 |
| 7241559 | Lens array and method for fabricating the lens array A lens array and a method for fabricating the lens array are described herein. The lens array is made from a photosensitive glass plate containing a relatively small amount of a photosensitive agent (e.g., silver, gold or combination thereof) such that when the phot... | 07/10/2007 |
| 7242521 | Dual-axis confocal microscope having improved performance for thick samples An optical head for confocal microscopy that is especially advantageous for measurements on thick samples is provided. An interface between the optical head and the sample is index matched, to avoid beam aberration at this interface. The optical head includes a wind... | 07/10/2007 |
| 7228033 | Optical waveguide lens and method of fabrication A spherical lens formed by fusing a generally homogenous glass lens blank to the distal end of an optical fiber, heating and tensioning the lens blank to separate it in two segments with the segment attached to the optical fiber defining a tapered end, and heating t... | 06/05/2007 |
| 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 sphere from an incident direction is reflected by the sphere generally to... | 05/29/2007 |
