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| Number | Title | Issue Date |
| 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 |
| 7221835 | Ion-reduction-blackened extra-mural absorbing media adapted for inclusion in image-conducting optical fiber arrays and methods of fabricating the same Methods of fabricating extra-mural absorption elements adapted for incorporation in an image-conducting optical fiber array include fabricating various constituent components to be included in an optical fiber bundle from one or more reducible-ion-containing glasses... | 05/22/2007 |
| 7149395 | Light-enhancing component and fabrication method thereof The present invention provides a light-enhancing component and a fabrication method thereof by using the focused-ion-beam. In the present invention, the surface plasmon polariton structure is coated on the surface of the optical fiber so as to form the light-enhanci... | 12/12/2006 |
| 7013678 | Method of fabricating graded-index optical fiber lenses A GRIN fiber lens is fabricated by the steps of providing a graded index glass preform, thinning the graded index preform to remove a sufficient thickness of the graded glass to establish a desired Δn, and drawing a graded index optical fiber from the thinned grade... | 03/21/2006 |
| 7004811 | Method of making micro-field emitter device for flat panel display A device and method for forming a device including electron emitters. The method includes exposing a first face of a sheet of bundled fiber segments to a reactive liquid to allow first ends of the fiber segments to react with the reactive liquid to remove material t... | 02/28/2006 |
| 6950237 | Fiber based field emitter display A method of forming a field emission device and the resulting device including emitters formed of fiber segments. Tips are formed on the fiber segments that have a radius substantially small by exposing the tips to a reactive liquid for a duration of time The tips a... | 09/27/2005 |
| 6769274 | Method of manufacturing a planar waveguide using ion exchange method The present invention relates to a method of manufacturing a waveguide using an ion exchange process. The present invention controls the refractive index and the thickness of a surface layer on a glass substrate using an ion exchange process, forms the waveguide pat... | 08/03/2004 |
| 6470712 | Method of changing the surface of a glass substrate containing silver, by using a laser beam A laser processing method for removing glass by melting, evaporation or ablation from sheet-like glass substrate for forming microscopic concavities and convexities. Diffraction grating and planar microlens array obtained thereby.... | 10/29/2002 |
| 6393180 | Providing a refractive index change in an ion diffused material A method of forming a grating in waveguide uses an ion exchange process to provide a waveguide region within and clad by a surrounding substrate and through an ion exchange process diffusing into the substrate an ion, such as such as Ag+, that is photosen... | 05/21/2002 |
| 6289699 | Wavelength selective optical couplers A wavelength selective optical fiber coupler having various applications in the field of optical communications is disclosed. The coupler is composed of dissimilar waveguides in close proximity. A light induced, permanent index of refraction grating is re... | 09/18/2001 |
| 6128926 | Graded index lens for fiber optic applications and technique of fabrication A non-phase separable glass material for fabricating a GRIN lens comprises 5-20 mole % boron oxide and ratio R of network modifiers in mole % to the network former boron oxide in mole % is in the range of about 1-1.5. The melted preform of such glass mate... | 10/10/2000 |
| 6067388 | Method of making an integrated optical component and an integrated optical star coupler made in accordance with said method The invention is directed to a method for making integrated optical components having strip waveguides (11 to 15; 21 to 2M) and a layer waveguide 53. A mask 4 having a lattice structure 3i functions to generate the layer waveguide 53 via ion exchange. The... | 05/23/2000 |
| 5318614 | Method of burying optical waveguide paths Optical waveguide paths are formed under the surface of a glass substrate by a method comprising (a) forming by ion-exchange a dopant ion path on a first substrate surface, (b) applying an electrode to the second surface, (c) contacting the first surface ... | 06/07/1994 |
| 5269888 | Method of fabricating integrated optical devices by means of field-assisted ion exchange Integrated optical devices are fabricated by field-assisted ion exchange on a starting substrate, wherein the substrate is first prepared to be connected to a source of potential difference, is duly masked as a function of the optical circuit to be implem... | 12/14/1993 |
| 5266092 | Processes for preparation of ion exchanged crystalline waveguides There is disclosed an optical waveguide comprising a K1-x Rbx TiOmO4 single crystal substrate, wherein x is from 0 to 1 and M is P or As, having at least one optically smooth surface wherein sufficient K+ and/or... | 11/30/1993 |
| 5194079 | Method of forming an optical channel waveguide by thermal diffusion A method of forming an optical channel waveguide includes forming on a substrate a waveguide layer of silica doped with an index of refraction raising dopant whose concentration profile in a first dimension includes a higher concentration region and an ad... | 03/16/1993 |
| 5160523 | Method of producing optical waveguides by an ion exchange technique on a glass substrate The invention relates to a method of producing waveguides by an ion exchange technique on a glass substrate. In order to be able to alleviate the tolerances allowed for the ion exchange technique, the waveguides are formed in the invention by diffusing io... | 11/03/1992 |
| 5125944 | Process for producing buried wave guide device A buried wave guide device is produced by immersing a phosphate glass containing exchangeable ions in a molten salt. Ions are exchanged from the phosphate glass to give a wave guide whose refractive index increases sharply from a first surface to a maximu... | 06/30/1992 |
| 5114453 | Lightwave guide produced by ion exchange of cs+ ions A method of production of mono- or multimodal lightwave guides from special substrate glasses of the glass system SiO2 -B2 O3 -Al2 O3 - K2 O-F-, with partial exchange of the Li+ | 05/19/1992 |
| 5057135 | Method of quickly manufacturing an optical waveguide In a method of manufacturing an optical waveguide by the use of a substrate which has a first ion of a first refractive index and primary and secondary surfaces, an optical passage is formed in the substrate by diffusing through the primary surface a seco... | 10/15/1991 |
| 5035734 | Method of producing optical waveguides The invention relates to a method of producing optical waveguides by ion exchange technique in a glass substrate (1), the ion exchange between a source of ions (such as AgNO3) and the glass substrate (1) taking place within glass substrate surf... | 07/30/1991 |
| 5007948 | Essentially colorless silver-containing glasses through ion exchange This invention relates to the production of an essentially colorless alkali meal oxide-Al2 O3 and/or B2 O3 -SiO2, wherein at least a portion thereof contains silver ions resulting from an ion exchange... | 04/16/1991 |
| 5004707 | Lightwave guide produced from special substrate glasses by ion exchange against CS+ ions Production of mono- or multimodal lightwave guides from special substrate glasses of the glass system SiO2 --B2 O3 --Al2 O3 -- K2 O--F-, with partial exchange of the Li+, N... | 04/02/1991 |
| 4983197 | Method for producing waveguides in a glass substrate by ion exchange A method for producing waveguides in a glass substrate by ion exchange comprises the method steps of: (a) applying a metal mask (44) on the glass substrate (42), this metal mask (44) leaving open the areas of the waveguides (72,74) to be provided, (b) bri... | 01/08/1991 |
| 4963177 | Method for making a grating assisted optical waveguide device The present disclosure makes a grating assisted optical waveguide device. The method includes cleaning a substrate made of glass by means of cleaning agents; depositing a first layer made of metal onto a surface of the substrate by an evaporation process;... | 10/16/1990 |
| 4948407 | Proton exchange method of forming waveguides in LiNbO3 A proton-exchange method of forming optical waveguides within a lithium-based optical substrate is disclosed which utilizes sulfuric acid as the proton source. The substrate is masked to expose the areas desired to be transformed into waveguiding regions ... | 08/14/1990 |
| 4902330 | Method of producing gradient-index lens A method of producing a gradient-index lens includes a first step in which a glass body is immersed into a molten salt containing ions which are able to provide a refractive index higher than that of ions constituting the glass body, in order to perform i... | 02/20/1990 |
| 4898777 | High-strength fluoride glass fibers and process of making A novel solution of H3 BO3 dissolved in strong hydrochloric or nitric acid is used to etch fluoride glass preforms used to manufacture fluoride glass fibers. Because of the excellent cleaning ability of the present solution, as well ... | 02/06/1990 |
| 4867774 | Method of producing an elongated glass body, particularly a preform for optical waveguides A method is described of producing an elongated glass body, particularly a preform for SiO2 -base optical waveguides, in which starting glass powder material is shaped to a porous body and the latter is sintered to form a glass body. In order t... | 09/19/1989 |
| 4851024 | Process for producing optical glass A uniform refractive index-type glass is prepared by ion exchange in which a glass containing ions of a first type is immersed in a molten salt containing ions of a second type, the ions in the molten salt having a higher refractive index than the ions in... | 07/25/1989 |
| 4851023 | Method for manufacturing aluminosilicate optical glass Aluminosilicate optical glass without boron oxide, comprising 60-95 mols % silica and at least 2 mols alumina, the remainder being made up of at least one oxide of a metal selected from silver and thallium. The glass may also contain caesium. Optical wave... | 07/25/1989 |
| 4849002 | Ion-exchangeable germanate method for strengthened germanate glass articles Ion exchangeable glass compositions containing from 50 to 90 mole percent GeO2, from 5 to 30 mole percent Al2 O3, from 3 to 30 mole percent Li2 O, up to 30 mole percent Na2 O and up to 30 mole percent... | 07/18/1989 |
| 4810275 | Method of making optical waveguides using glass forming pulverulent material A method of making optical waveguides is disclosed in which, to fabricate a preform, glass forming pulverulent material is filled into a mold by means of one or more screw conveyors. The quantity of glass forming pulverulent material filled into the mold ... | 03/07/1989 |
| 4756733 | Method and composition for creating gradient-index glass Disclosed is an ion exchange process and composition useful therein for creating a gradient-index profile in a glass structure which uses a monovalent metal salt bath modified by the addition of a non-monovalent metal salt which provides for complexing of... | 07/12/1988 |
| 4589725 | Optical-fiber directional coupler using boron oxide as interstitial material An evanescent-field coupler for an optical fiber having a core and a cladding forming a guiding region located sufficiently close to the surface of the fiber along a selected length thereof to allow evanescent-field coupling of an optical signal from the ... | 05/20/1986 |
| 4528010 | Process for producing optical glass product A process for producing an optical glass product having a predetermined distribution of refractive index in the interior of the product is disclosed. The process comprises the steps of: (a) preparing an aqueous silicate solution containing from about 0.1 to ... | 07/09/1985 |
| 4472030 | Cesium-containing optical glass A cesium-containing optical glass comprising, by weight, 32-56% of SiO2, 6-25% of K2 O, 6-32% of Cs2 O, 0-30% of BaO, 0-2.5% of MgO, 5-34% of ZnO, 0-3% of ZrO2 and 0-5% of SnO2, provided that the tota... | 09/18/1984 |
| 4375312 | Graded index waveguide structure and process for forming same The specification discloses a process for forming a graded index waveguide structure by first providing a substrate of a first selected optical material having a chosen index of refraction. Next, a patterned layer of a second optical material is formed on... | 03/01/1983 |
| 4345833 | Lens array An array of gradient refractive index lenses designed to produce an erect image of an extended object. The lenses are supported in a matrix of light-absorbing cladding glass for stray light control.... | 08/24/1982 |
| 4275951 | Optical fibres and glasses A range of alkali metal borosilicate glass compositions modified by the addition of alkaline earth metal oxides has been found to be especially suitable for the production of graded index optical fibre by thermal diffusion using the double crucible method... | 06/30/1981 |
