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| Number | Title | Issue Date |
| 7777964 | Plastic rod lens, rod lens array, rod lens plate, image sensor and printer A plastic rod lens having a cylindrical shape with a radius R including a central axis; and an outer peripheral portion, wherein a refractive index nD decreases from the central axis to the outer peripheral portion, and the following requirements (1) to (... | 08/17/2010 |
| 7710657 | Distributed refractive index lens and method for manufacturing the same A distributed refractive index lens and method of producing the lens are disclosed. The lens has a plurality of areas having refractive index distributions, and includes a plate-like member containing polysilane. The refractive index distribution of these areas is a... | 05/04/2010 |
| 7630137 | Lens array, exposure device, and image forming apparatus A lens array has a plurality of rod lenses with optical axes in parallel with one another, in which the rod lens has a refractive-index distribution in a radial direction. The lens array has a radius ratio r0/r set to 0.9 or smaller, in which a radius r o... | 12/08/2009 |
| 7511891 | Miniaturized optically imaging system with high lateral and axial resolution The invention is directed to a miniaturized optically imaging system with high lateral and axial resolution for endomicroscopic applications. To provide a miniaturized optical head which permits an appreciable increase in photon efficiency with high lateral and axia... | 03/31/2009 |
| 7466491 | DLC film and method for forming the same The present invention provides a DLC film that functions as an optical element and that can easily be miniaturized or integrated, and a method for forming the DLC film. A DLC film that has a refractive index varying continuously in at least one width direction from ... | 12/16/2008 |
| 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 |
| 7390532 | Method for the production of optical elements with gradient structures A process for producing an optical element having a gradient structure, wherein a potential difference is generated in a nanocomposite material comprising nanoscale particles in a matrix material to cause a directed diffusion of the nanoscale particles in the matrix... | 06/24/2008 |
| 7369225 | Device and method for inspecting surfaces in the interior of holes A device and method for checking surfaces in the interior of holes, depressions, or the like. The device and method are developed in such a manner that a multicolor light beam can be produced with a light source, wherein a light beam, due to the chromatic aberration... | 05/06/2008 |
| 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 |
| 7329856 | Image sensor having integrated infrared-filtering optical device and related method An image sensing device is disclosed having a die formed with an array of photosensing sites and a structure of optical material having infrared absorbing characteristics formed over the photosensing sites. An embodiment is disclosed in which the structure of optica... | 02/12/2008 |
| 7321475 | Image pick-up lens system An image pick-up lens system includes an aperture stop (10), a biconvex first lens (20), and a meniscus-shaped second lens (30) having a concave surface on a side of an object. The aperture stop, the first lens and the second lens are aligned in... | 01/22/2008 |
| 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 |
| 7286156 | Light source device for scanning-exposure and method and apparatus for scanning-exposure A blue laser light source is a semiconductor laser having a sapphire substrate that is transparent to a wavelength of a blue laser beam emitted from an active layer. A condenser lens converges the blue laser beam at a focal point where a modulator is placed. A slit ... | 10/23/2007 |
| 7274514 | Electro-optical device, image printing apparatus, and method of manufacturing electro-optical device An electro-optical device includes an electro-optical panel which has a plurality of electro-optical elements whose light-emitting characteristics or transmissive characteristics are changed by electrical energy applied; a converging lens array which has a plurality... | 09/25/2007 |
| 7271899 | Millimetre-wave detection device for discriminating between different materials A detection device that can be used for detecting objects behind clothing etc including a dielectric lens and a receive element sensitive to millimetre wave radiation. Prior art systems produce an image of a scene usually using scanning optics. This can be large and... | 09/18/2007 |
| 7272102 | Ridge waveguide with recess A ridge waveguide having a recessed ridge forming an isolated tip at a terminal end of the waveguide's aperture efficiently couples light into a spot adjacent to the tip in a medium below the terminal end of the waveguide which is significantly smaller than the ligh... | 09/18/2007 |
| 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 |
| 7241262 | Image-distorting endoscopes and methods of making and using such endoscope An endoscope having restricted dimensions and comprising at least one image gatherer, at least one image distorter and at least one image sensor shaped to fit within said limited dimensions, and wherein said image distorter is operable to distort an image received f... | 07/10/2007 |
| 7230756 | Integrated optical system for endoscopes and the like Optical systems for endoscopes, borescopes, dental scopes, and the like which are characterized by having three groups of lenses of positive optical power and an external entrance pupil. Typically, all three groups of lenses are displaced from the pupil and focal pl... | 06/12/2007 |
| 7218434 | Optical scanning apparatus and image forming apparatus equipped with the same An optical scanning apparatus in which streaks in an image or unevenness in density of an image caused by influences of dusts, scratches and toner etc on the surface of a reflecting member are unlikely to occur and excellent images can be always obtained and an imag... | 05/15/2007 |
| 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 the focusing device material is homogeneous and wherein the focusing d... | 02/06/2007 |
| 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 direction. The GRIN lens has a refractive index n satisfying the following... | 01/23/2007 |
| 7164818 | Integrated gradient index lenses Gradient index lenses are described that are integrated within a planar optical structure. The gradient index lens is optically coupled to a planar optical waveguide. In some embodiments, the gradient index lens with variation in index-of-refraction in one dimension... | 01/16/2007 |
| 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 scanning lens is formed through plastic mold, and a distribution of the r... | 10/31/2006 |
| 7119965 | Head mounted projection display with a wide field of view A ultra-wide field of view head mounted display has been realized by integrating an ARC display component having a greater than about 70 degrees field of retro-reflection with an optical tiling display which provides a greater than about 80 degrees horizontal field ... | 10/10/2006 |
| 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 photonic crystal, optical inlet and outlet regions on the surface of sa... | 09/26/2006 |
| 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 is substantially constant axially. The GRIN element includes a first ... | 09/05/2006 |
| 7098281 | Plastic optical fiber, optical fiber cable, optical fiber cable with plug, method for producing methyl methacrylate based polymer and method for producing plastic optical fiber This invention provides a process for manufacturing a methyl methacrylate polymer comprising the steps of feeding a monomer containing at least 80 wt % of methyl methacrylate and a radical polymerization initiator represented formula (III) to a reactor; polymerizing... | 08/29/2006 |
| 7091500 | Multi-photon endoscopic imaging system An imaging system includes a pulsed laser, a pre-compensator for chromatic dispersion, a transmission optical fiber, and a GRIN lens. The pre-compensator chirps optical pulses received from the laser. The transmission optical fiber transports the chirped optical pul... | 08/15/2006 |
| 7071963 | Optical write-in head, image forming apparatus using the same, and method for inspecting the apparatus An optical write-in head for obtaining a clear image even in printing at a relatively high recording density without generating strip-like irregularities in most cases. The optical write-in head applies light carrying image information to a photosensitive substance.... | 07/04/2006 |
| 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, in series, a first cylindrical gradient index lens arranged with its ... | 06/27/2006 |
| 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. ... | 05/30/2006 |
| 7043113 | Optical multi/demultiplexer, optical multi/demultiplexing method, and optical filter Disclosed is an optical multi/demultiplexer, which comprises a graded index type light transmission section whose refractive index is continuously reduced in the direction from the center to the periphery thereof, a wavelength-multiplexed-light connecting section di... | 05/09/2006 |
| 7042651 | Vari-focal optical system A vari-focal optical system having a composition comprising at least a first negative lens unit, a second positive lens unit, a third negative lens unit and a fourth positive lens unit, and changes a magnification from a wide position to a tele position by moving at... | 05/09/2006 |
| 7035016 | Tip optical element for immersion microscope objectives A tip optical element for immersion microscope objectives is constructed so that a first optical element and a second optical element are cemented to each other, and has an annular light-blocking area on a surface of one of the first optical element and the second o... | 04/25/2006 |
| 7027231 | Endoscope objective lens An endoscope objective lens with a three-group, three lens element construction, is formed of, in order from the object side, a first lens element having either a negative meniscus shape or a plano-concave shape with its concave surface on the image side, a stop, a ... | 04/11/2006 |
