Class / Patent application number | Description | Number of patent applications / Date published |
359652000 | With graded refractive index | 48 |
20080204889 | 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 atmosphere, and without using a molten salt. More specifically, the present invention provides a method of producing a graded refractive index optical element comprising applying a paste containing a copper compound, an organic resin and an organic solvent to a glass substrate containing an alkali metal component as a glass component, and then performing heat treatment at a temperature below the softening temperature of the glass substrate. | 08-28-2008 |
20080252988 | Method of Fabricating Tridimensional Micro- and Nanostructures as Well as Optical Element Assembly Having a Tridimensional Convex Structure Obtained by the Method - A method is for forming three-dimensional micro- and nanostructures, based on the structuring of a body of material by a mould having an impression area which reproduces the three-dimensional structure in negative form. This method includes providing a mould having a substrate of a material which can undergo isotropic chemical etching, in which the impression area is to be formed. An etching pattern is defined on (in) the substrate, having etching areas having zero-, uni- or bidimensional extension, which can be reached by an etching agent. A process of isotropic chemical etching of the substrate from the etching areas is carried out for a corresponding predetermined time, so as to produce cavities which in combination make up the impression area. The method is advantageously used in the fabrication of sets of microlenses with a convex three-dimensional structure, of the refractive or hybrid refractive/diffractive type, for forming images on different focal planes. | 10-16-2008 |
20090323196 | CLAD GLASS COMPOSITION AND MOTHER GLASS ROD FOR GRADIENT-INDEX ROD LENS FORMED USING THE SAME, GRADIENT-INDEX ROD LENS AND METHOD OF MANUFACTURING THE SAME, ROD LENS ARRAY, AND IMAGE PROCESSOR - The present invention provides a clad glass composition that is excellent in devitrification resistance and that prevents the whole mother glass rod from devitrifying by preventing a core glass composition from devitrifying in forming a mother glass rod using a concentric crucible drawing method. The clad glass composition forms a clad of a mother glass rod for a gradient-index rod lens having a core/clad structure. The clad glass composition includes the following components, indicated by mol %: 45 to 65% SiO | 12-31-2009 |
20100027131 | Optical member, solid-state imaging device, and manufacturing method - An optical member includes high refractive index layers having a great refractive index and low refractive index layers having a small refractive index, which are each relatively thin as compared with an optical length, disposed alternately in the lateral direction as to an optical axis. Each width of the high refractive index layers and the low refractive index layers is equal to or smaller than the wavelength order of incident light. | 02-04-2010 |
20100053763 | 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 layers or slabs. | 03-04-2010 |
20100157436 | Method of Manufacturing Grin lens and Grin Lens - The manufacture of a GRIN lens using a sol-gel process includes forming a wet gel from an alcohol solution containing a silicon alkoxide, a dopant alkoxide, and an aluminum alkoxide, first, an alcohol solution containing the silicon alkoxide and the aluminum alkoxide as is prepared, and then the dopant alkoxide is mixed thereto. | 06-24-2010 |
20100157437 | NEGATIVE REFRACTIVE INDEX MATERIALS AND METHODS FOR MAKING SAME - Embodiments of the invention described herein include metamaterials that exhibit negative permittivity and negative permeability at optical frequencies, methods for preparing such materials, and devices prepared from same. | 06-24-2010 |
20100195212 | 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 conditions such as binoculars, rifle scopes, telescopes, microscopes, night vision goggles and laser eye protection devices. | 08-05-2010 |
20100296171 | OPTIMIZING TOTAL INTERNAL REFLECTION MULTILAYER OPTICS THROUGH MATERIAL SELECTION - An optic device includes a multilayer zone forming a redirection section for redirecting and transmitting photons through total internal reflection, each multilayer zone including a high index material having a first real refractive index n | 11-25-2010 |
20110019287 | OPTICAL COMPONENT AND METHOD FOR PRODUCING THE SAME - A concave lens as an optical component is made of glass containing 20 to 22% of B | 01-27-2011 |
20110075268 | OPTICAL ELEMENT HAVING REFRACTIVE INDEX DISTRIBUTION AND OPTICAL APPARATUS - An optical element Ggi | 03-31-2011 |
20110116170 | Gradient index lenses and methods with zero spherical aberration - Gradient index lenses with no aberrations and related methods for making such lenses are described. In one aspect, a gradient index lens can be a substantially spherically-shaped lens that has at least one side that is flattened such that a locus of focal points resides on a plane. A method for making a gradient index lens can include forming material layers, each of the material layers defining an effective refractive index, and laminating the material layers together to form a substantially spherically-shaped lens having at least one side that is flattened to a substantially planar surface. The material layers can have a gradient refractive index distribution such that a locus of focal points resides on the substantially planar surface. | 05-19-2011 |
20110199687 | PROCESS FOR THE MANUFACTURE OF FLAT OPTICAL ELEMENTS AND ELEMENTS THUS OBTAINED - The process according to the invention is based on the simultaneous ion exchange of two ions having an almost identical mobility with the ions of a glass substrate, at least one of the aforementioned two ions being used in the form of an enamel. | 08-18-2011 |
20110205634 | OPTICAL MEMBER, SOLID-STATE IMAGING DEVICE, AND MANUFACTURING METHOD - An optical member including high refractive index layers having a great refractive index and low refractive index layers having a small refractive index, which are each relatively thin as compared with an optical length, disposed alternately in the lateral direction as to an optical axis. Each width of the high refractive index layers and the low refractive index layers is equal to or smaller than the wavelength order of incident light. | 08-25-2011 |
20110242672 | LENS AND METHOD FOR PRODUCING LENS - A lens includes a transparent member, wherein the transparent member contains a plurality of polymers formed from organic monomers; the transparent member has a refractive index distribution due to the plurality of polymers; and particles having a lower thermal expansion coefficient than the transparent member are dispersed in the transparent member. | 10-06-2011 |
20110273779 | Optical device and associated methods - An optical device includes a transparent substrate, a first replicated refractive surface on a first surface of the substrate in a first material, and a second replicated refractive surface on a second surface, opposite the first surface, and made of a second material, different from the first material. The material and curvature of the first replicated surface and the material and curvature of the second replicated surface may be configured to substantially reduce the chromatic dispersion and/or the thermal sensitivity of the optical device. | 11-10-2011 |
20110292516 | 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 pair. Each of the lenses of the pair produces a change of optical path with a symmetrical distribution. If there is no relative displacement, the lenses of the pair generate an optical path difference equal to zero. When there is relative displacement, the lenses of the pair generate a change of optical path with asymmetric distribution, which helps to extend the depth of field without reducing either the resolution or luminous capture. The optical lens of this invention, in the form of an optical pair, serves any other optical system to capture images without loss of modulation, but with attenuated modulation which can be retrieved with digital processing algorithms known in the art. | 12-01-2011 |
20110317275 | METAMATERIALS - One exemplary metamaterial is formed from a plurality of individual unit cells, at least a portion of which have a different permeability than others. The plurality of individual unit cells are arranged to provide a metamaterial having a gradient index along at least one axis. Such metamaterials can be used to form lenses, for example. | 12-29-2011 |
20130003186 | Achromatic Gradient Index Singlet Lens - A method of making an achromatic gradient index singlet lens comprising utilizing a gradient index material with a curved front surface in which light does not follow a straight line as it travels through the material and wherein different color rays traverse different curved paths, utilizing the natural dispersion of the curved front surface as a strong positive lens, and developing a weakly diverging GRIN distribution within the lens to balance the chromatic aberrations of the curved front surface. | 01-03-2013 |
20130194677 | CONSOLIDATED MULTILAYERED GRADIENT REFRACTIVE INDEX OPTICAL MATERIALS - A consolidated multilayered GRIN optical material includes a multilayered composite GRIN sheet that includes a plurality of consolidated coextruded multilayered polymer films. Each of the multilayered polymer films includes a plurality of at least two alternating layers (A) and (B). Layer (A) includes a first blend of polymer components and layer (B) includes a second blend of polymer components. The multilayered composite GRIN sheet has an external optical transmission of at least 80% at a wavelength of 633 nm measured using UV-VIS spectroscopy and is free of intralayer polymer domains at least 1 micron size scale in any dimension. | 08-01-2013 |
20130321927 | TUNABLE ACOUSTIC GRADIENT INDEX OF REFRACTION LENS AND SYSTEM - A tunable acoustic gradient index of refraction (TAG) lens and system are provided that permit, in one aspect, dynamic selection of the lens output, including dynamic focusing and imaging. The system may include a TAG lens and at least one of a source and a detector of electromagnetic radiation. A controller may be provided in electrical communication with the lens and at least one of the source and detector and may be configured to provide a driving signal to control the index of refraction and to provide a synchronizing signal to time at least one of the source and the detector relative to the driving signal. Thus, the controller is able to specify that the source irradiates the lens (or detector detects the lens output) when a desired refractive index distribution is present within the lens, e.g. when a desired lens output is present. | 12-05-2013 |
20140192420 | ASPHERICAL GRIN LENS - A method of fabricating an aspherical gradient refractive index lens includes co-extruding a first polymer material having a first refractive index and a second polymer material having a second refractive index different than the first refractive index to form multilayered polymer composite films, assembling the multilayered polymer composite films into a multilayer composite GRIN sheet and shaping the multilayered composite GRIN sheet into an aspherical lens. | 07-10-2014 |
20150116841 | ELECTRONIC DEVICE - An exemplary embodiment of the present inventive concept discloses an electronic device, including a display, a body to which the display is attached, wherein the body is coated with a meta-material, the meta-material configured to divert an electromagnetic wave based on refraction characteristics, and a display-cover that blocks the display from outside when the display is turned off, wherein the display-cover is coated with the meta-material. | 04-30-2015 |
20150378065 | METHOD FOR MODIFYING THE REFRACTIVE INDEX OF AN OPTICAL MATERIAL AND RESULTING OPTICAL VISION COMPONENT - A method for modifying the refractive index of an optical polymeric material. The method comprises continuously irradiating predetermined regions of an optical, polymeric material with femtosecond laser pulses to form a gradient index refractive structure within the material. The optical polymeric material can include a photosensitizer to increase the photoefficiency of the two-photo process resulting in the formation of the observed refractive structures. An optical device includes an optical, polymeric lens material having an anterior surface and posterior surface and an optical axis intersecting the surfaces and at least one laser-modified, GRIN layer disposed between the anterior surface and the posterior surface and arranged along a first axis 45° to 90° to the optical axis. The at least one laser-modified GRIN layer comprises a plurality of adjacent refractive segments characterized by a variation in index of refraction across at least one of at least a portion of the adjacent segments and along each segment. | 12-31-2015 |
20160025957 | OPTICAL LENS FABRICATION - Optical lenses and methods for manufacturing optical lenses are disclosed herein. Lenses having a reduced aperture size are also disclosed herein along with methods for making the same. The optical lenses disclosed herein can be made having improved optical properties. The lenses can be used in optical microscopes, including optical microscopes with a shorter optical path relative to conventional optical microscopes. | 01-28-2016 |
20180024274 | Electronic Devices Having Transparent Crystalline Structures With Antireflection Coatings | 01-25-2018 |
359653000 | Having an axial gradient | 8 |
20090097129 | Optical Article and Process for Producing Optical Article - An optical article includes a plastic substrate, wherein a primer layer and a hard coat layer are formed on a surface of the plastic substrate, and the primer layer is formed from a coating composition containing the following components (A) to (C): (A) a polyurethane resin; (B) metal oxide fine particles; and (C) an organosilicon compound. | 04-16-2009 |
20100046083 | SOLID IMMERSION FOCUSING APPARATUS FOR HIGH-DENSITY HEAT ASSISTED RECORDING - In a particular embodiment, a solid immersion lens includes meta-material slabs formed from multiple layers of at least two different compositions. Each meta-material slab has a first effective index of refraction. The meta-material slabs are adapted to propagate an evanescent wave in a direction parallel to an axis to form a cone-shaped wave along the axis. The solid immersion lens further includes a core sandwiched between the meta-material slabs along the axis and having a second index of refraction that is less than the first effective index of refraction. The core directs surface plasmons that are excited by the cone-shaped wave to a focused area coincident with the axis. | 02-25-2010 |
20100202061 | Shaped Gradient Lens - A gradient lens capable of focusing electromagnetic rays received at a first lens surface onto a second lens surface. The first lens surface and second lens surface can include convex surfaces protruding in opposite directions from a substantially planar surface. The lens can include a gradient index between the first surface and the planar surface and a gradient index between the two convex surfaces. The lens can include two or more gradient layers, each gradient layer having an index of refraction different than that of adjacent gradient layers. The gradient layers can focus parallel electromagnetic rays incident on the first surface onto a focal point at the second surface of the lens. As the parallel electromagnetic rays pass from one gradient layer to the next, the rays are redirected toward the focal point. | 08-12-2010 |
20110096404 | 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 gradient index lens, the optical length L can be adjusted accordingly as a function of that distance and the index of refraction of the medium occupying that distance. | 04-28-2011 |
20120320464 | LENS WITH LAYERED CONCENTRIC STRUCTURES - The lens contains a cup-shaped body with a lens bottom and a lens member extended upward from the lens bottom and forming a 49-degree included angle with the lens bottom. The lens member contains, from bottom to top, a number of layers, each having a number of refraction portions. Each refraction portion contains a number of refraction elements arranged in a concentric manner. According to the inclination angle of the lens member, dimensions of the refraction portions, and the distribution of refraction elements, the lens could be applied to various applications with enhanced coverage range and sensory effect. | 12-20-2012 |
20130100536 | SHAPED GRADIENT LENS - One embodiment provides for a gradient lens having a first substantially hemispherical member comprising a first convex surface and a base and a second substantially hemispherical member projecting away from the base of the first hemispherical member and comprising a second convex surface. The gradient lens also includes a plurality of gradient layers disposed within the first hemispherical member, each gradient layer concentrically aligned to the first hemispherical member and comprising an index of refraction different than that of adjacent gradient layers. | 04-25-2013 |
20130170047 | MICROLENS STRUCTURE AND FABRICATION METHOD THEREOF - A microlens structure is provided. The microlens structure includes a microlens element having a first refraction index. A first film is disposed on the microlens element, wherein the first film has a second refraction index less than the first refraction index. A second film is disposed on the first film, wherein the second film has a third refraction index less than the second refraction index and greater than a refraction index of air. Further, a fabrication method of the microlens structure is also provided. | 07-04-2013 |
20140104695 | SHAPED GRADIENT LENS - One embodiment provides a method for receiving parallel rays at a lens. A first surface of the lens can receive first substantially parallel rays incoming from a first direction. The first surface of the lens also can receive second substantially parallel rays incoming from a second direction that is substantially different than the first direction. The lens can focus the first substantially parallel rays onto a first focal point on a second surface of the lens and focus the second substantially parallel rays onto a second focal point on the second surface of the lens, the second focal point being different than the first focal point. | 04-17-2014 |
359654000 | Having a radial gradient | 14 |
20080225401 | COMPACT IMAGING LENS SYSTEM - A compact imaging lens system includes three lenses. The first lens is a positive meniscus lens having a convex side facing toward the image side, which has a big focusing power and is provided to capture image and for balance of aberration. The first lens serves to make the lens system a low sensitivity lens system. The second lens is a negative lens and is provided mainly for correcting chromatic aberration and off-axis aberration. An aperture is set between the first and second lenses, and this is of benefit to balance of aberration. The third lens is a negative lens and is provided for correcting off axis aberration. All the lenses can be made of plastics. This facilitates cost reduction, weight reduction, while still maintains a high resolution. | 09-18-2008 |
20080266670 | FIXED-FOCUS LENS SYSTEM - A fixed-focus lens system includes, in order from an object side to an image side along an optical axis thereof, an aperture stop, a first positive lens, a second negative lens, a third positive meniscus lens, and a fourth negative lens having increasing negative refractive power from the optical axis toward the periphery. The fixed-focus lens system satisfies the following condition: 0.110-30-2008 | |
20090052048 | 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 distribution that includes a change in a refractive index in a direction parallel to a plane of the plate-like member, and includes a substantial uniform refractive index in a direction perpendicular to the plane. | 02-26-2009 |
20090168190 | Imaging Device - It is an object of the present invention to provide an imaging device that, even if the optical axis of the multifocal lens has a deviation resulting from its decentered surfaces, can prevent an image from being deteriorated by the low precision lens. The imaging device | 07-02-2009 |
20090190231 | METHOD AND APPARATUS PROVIDING GRADIENT INDEX OF REFRACTION LENS FOR IMAGE SENSORS - A lens and its method of making. The lens includes a material having a lower index of refraction and a material having a higher index of refraction arranged in a pattern such that the lens has a gradient effective index of refraction. | 07-30-2009 |
20100002308 | 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 annular peripheral zone lying between a radius Ru enveloping the useful zone and a smaller radius Ro. The index is varies as a function of radial distance from a higher value near the smaller radius Ro to a lower value near the radius Ru. The function of the variable refractive index lies between a maximum and minimum profile. | 01-07-2010 |
20100271708 | LENS WITH CONTROLLED LIGHT REFRACTION - A lens for distribution of light from a light emitter having an emitter axis and defining an emitter plane. The lens including an emitter-adjacent base end forming an opening to an inner cavity surrounding the emitter. An inner-cavity surface includes an axis-adjacent first inner region configured for refracting emitter light rays away from the axis, a second inner region spaced from the first inner region and configured for refracting emitter light rays toward the axis, and a middle inner region joining and substantially cross-sectionally asymptotical to the first and second inner regions. The middle inner region is positioned with respect to the emitter to refract light away from the axis by progressively lesser amounts at positions progressively closer to the second inner region. The lens further has an outer surface including output regions each configured for refracting the light from a corresponding one of the inner regions such that at the outer surface light from each inner region is refracted substantially without overlapping light from the other inner regions. | 10-28-2010 |
20110317276 | OPTICAL ELEMENT AND OPTICAL APPARATUS - In a gradient-index optical element, there is a difference in an abnormal partial dispersion characteristic of a medium between a position on an optical axis of the radial gradient-index optical element and a position on an effective beam diameter. | 12-29-2011 |
20120140336 | PLASTIC LENS - A plastic lens includes a first surface and second surface that each have an optical function; and a peripheral surface formed at a periphery of the first surface and the second surface; and has a central portion of a thickness that is thinner than that of a peripheral portion of the plastic lens. The second surface includes an optically functional concave aspect, a recess formed along an outer perimeter of the concave aspect, a first protruding portion formed at a boundary of the concave aspect and the recess, a second protruding portion formed at a boundary of the recess and the peripheral surface, and a gate portion formed on the peripheral surface, at a position where a resin injection outlet is arranged during formation of the plastic lens. | 06-07-2012 |
20130057962 | ZOOM LENS AND OPTICAL APPARATUS - A zoom lens includes an aperture diaphragm, and a plurality of lens units including a negative lens unit arranged on a light incident side of the aperture diaphragm, the zoom lens being configured to make variable a focal length by changing an interval in the plurality of lens units. The negative lens unit includes a negative lens having a radial type refractive index distribution and a concave surface on the light incident side. The negative lens has a wavelength dispersion distribution in which a differential value is negative on an optical axis of the zoom lens, and the differential value increases at a position that is more distant from the optical axis. | 03-07-2013 |
20160103251 | DEVICE FOR A MOTOR VEHICLE INCLUDING AN OPTICAL AREA SENSOR HAVING AN OPTICAL SEMIAXIS AND AN OPTICAL SYSTEM HAVING AN APERTURE ANGLE AND USE OF THE DEVICE IN A VEHICLE - A device is provided, which includes at least one optical area sensor having an optical semiaxis and an entrance pupil. The device also includes an optical element including at least one pair of parallel surfaces. The device is characterized in that the optical element has a refractive index which decreases as the distance from the center increases at least along a direction in parallel to the surfaces at least between one edge of the optical element and a center of the optical element. The optical element is situated with respect to the area sensor in such a way that the surfaces are situated perpendicularly to the optical semiaxis. The increase of the refractive index perpendicular to the optical semiaxis makes it possible to situate the optical element having the parallel surfaces perpendicular to the optical semiaxis, so that the block requires minimal installation space. | 04-14-2016 |
20180024334 | IMAGING LENS AND IMAGING APPARATUS | 01-25-2018 |
359655000 | In a variable media (e.g., gas, elastomer, etc.) | 2 |
20080225402 | Optical Component with Cells - An optical component ( | 09-18-2008 |
20110013287 | Tunable Liquid Gradient Refractive Index Lens Device - A lens device includes a substrate having a channel and a first fluid flow path and a second fluid flow path. The first and second fluid flow paths at least partially in communication with the channel. A light emitting device is positioned adjacent to the channel. At least one first fluid source is in communication with the first fluid path such that a first fluid is moveable along the first fluid path and at least one second fluid source in communication with the second fluid path such that a second fluid is moveable along the second fluid path. The first second fluid paths are configured so the first fluid and second fluid move through the channel to define an adjustable liquid gradient refractive index distribution in the channel. Adjustment of the liquid gradient refractive index distribution permits a change of liquid lens focal distance or an angular adjustment of light emitted by the light emitting device. | 01-20-2011 |