Class / Patent application number | Description | Number of patent applications / Date published |
264100270 | Utilizing plasma, electric, electromagnetic, particle, or wave energy | 37 |
20080265449 | Optical Master Substrate with Mask Layer and Method to Manufacture High-Density Relief Structure - The invention relates to a master substrate, a method for making a high-density relief structure, and optical discs replicated with the high-density relief structure, the master substrate comprising a substrate layer ( | 10-30-2008 |
20080303180 | METHOD OF MANUFACTURING ALL-IN-ONE TYPE LIGHT GUIDE PLATE - Provided is a method of manufacturing an all-in-one type light guide plate. The method includes: fabricating a master including a plurality of inverse-prism shape structures; forming an elastic mold by applying an elastomer on the master; and fabricating the all-in-one type light guide plate, on which a plurality of inverse-prism shape structures are integrally formed, by applying a light transmissive material on the elastic mold. | 12-11-2008 |
20080315443 | Adjustment Method, Particularly a Laser Adjustment Method, and an Actuator Suitable for the Same - The invention relates to an adjustment method, especially for the adjustment of optical or fibre optical components, whereby a partial region of an actuator is locally heated in such a defined manner that compressive stresses are created therein as a result of the restricted thermal expansion of said heated partial region, caused by at least one other partial region of the actuator. If the yielding point σ of the material of the partial region is exceeded, said compressive stresses lead to the plastic compression of the heated partial region. Furthermore, said heated partial region is contracted during cooling and leads to a defined modification of the geometry of the actuator following the cooling process. Tensile stresses are created as a result of a restriction of said contraction by means of at least one other partial region in the previously heated partial region, and compressive stresses are frozen in the at least one other region. During the adjustment process, essential regions of the actuator, in which the tensile stresses or compressive stresses are frozen after cooling, are brought to a critical temperature in relation to the operating temperature of the actuator, at least until flow processes of the material are ended at the critical temperature. | 12-25-2008 |
20090194891 | Long period gratings on hollow-core fibers - High-quality long periodic grating (LPGs) were written in air-core photonic bandgap fibers by use of high frequency short duration CO2 laser pulses to periodically vary the size and shape of the air-holes in the holey cladding. The variation of cladding holes changes the waveguide structure, instead of the index of the materials forming the waveguide, and resonantly couples the core mode to discrete higher order or surface-like modes and then to lossy quasi-continuum of cladding and radiating modes. This mechanism is different from LPGs in solid core fibers in which the core mode is directly coupled into discrete cladding modes. The LPGs in hollow-core PBFs have unique properties such as very large PDL, very small or insensitivity to temperature, bent and external refractive index, and large strain sensitivity, and will have applications in both communication devices and sensors. | 08-06-2009 |
20090212449 | OPTICAL WAVEGUIDE SUBSTRATE MANUFACTURING METHOD - A voltage is applied on an interdigitated electrode provided on one main face of a single-domain ferroelectric single crystal substrate to form a periodic domain inversion structure | 08-27-2009 |
20090294999 | Method and Apparatus for Modifying an Index of Refraction Within a Material - A method includes: providing an element having mutually exclusive first and second portions with an initial index of refraction; and applying energy to the first portion in a manner causing the index of refraction thereof to change by at least 0.05 in relation to the index of refraction of the second portion. According to one specific approach, the applied energy is laser energy. | 12-03-2009 |
20100001421 | Fabrication method of self-written optical waveguide - A taper angle of a self-written optical waveguide to be formed is increased or decreased at a desired position. A range of light (aperture number) condensed by a focusing lens | 01-07-2010 |
20100289162 | METHOD FOR MANUFACTURING OPTICAL WAVEGUIDE - A method for manufacturing an optical waveguide includes the steps of: A) forming a liquid-state resin mass by adding dropwise a liquid-state resin on an under-cladding layer; B) forming a liquid-state resin layer to cover cores by pressing a mold on the liquid-state resin mass and applying the liquid-state resin to be expanded on the under-cladding layer; and C) curing the liquid-state resin layer and then releasing the mold, wherein the liquid-state resin added dropwise has a viscosity of 500 to 2,000 mPa·s and the rate at which the liquid-state resin is applied to be expanded is 10 to 50 mm/s. | 11-18-2010 |
20100308482 | METHOD FOR MANUFACTURING OPTICAL WAVEGUIDE - A method for manufacturing an optical waveguide which comprise the steps of: filling an ultraviolet curable liquid-state resin | 12-09-2010 |
20110068493 | Stimuli responsive liquid crystal-polymer composite fibers - A process for making a stimuli responsive liquid crystal-polymer composite fiber comprising mixing a liquid crystal, a polymer, and a solvent; processing the mixture in the presence of an electric potential across a collection distance; phase separating a polymer and said liquid crystal; and encapsulating said liquid crystal within said polymer. The fiber generally comprises a liquid crystal core and a polymer shell wherein the liquid crystal is responsive to chemical changes, thermal and mechanical effects, as well as electrical and magnetic fields. A liquid crystal containing fiber can be utilized as optical fibers, in textiles, and in optoelectronic devices. | 03-24-2011 |
20110068494 | FABRICATION OF MICROSCALE TOOLING - The present disclosure is directed to a process for making a tooling that may subsequently be used to make a microstructured article. The process detailed herein describes the formation of microstructured tooling structures in patterns to form microstructured arrays on a substrate to create the master tool. The process comprises providing a partially transparent substrate coated with a photo-polymerizable liquid on a first surface of the substrate. The master tool created can subsequently be used to fashion replication tools which in turn can be used to make light guides. | 03-24-2011 |
20110156293 | EMBOSSING ASSEMBLY, MANUFACTURING METHOD THEREOF, AND EMBOSSING METHOD USING THE SAME - A light guide plate is manufactured by applying an embossing assembly. The embossing assembly includes a roller and an embossing layer applied on the roller. The embossing assembly is formed by electroforming embossing micro-structures on the outer surface of the embossing layer to an embossing substrate and embossing micro-structures on a surface thereof. | 06-30-2011 |
20110260346 | METHOD OF MANUFACTURING LIGHT GUIDE PLATE OF KEYPAD - A method of manufacturing a light guide plate containing a plurality of light-guiding micro structures comprises the steps of: preparing a mold that has a concave hole formed by a plurality of light-guiding micro structures; pouring a mixture of ultraviolet curable resins and glass microbeads into the mold; attaching a carrier onto the mixture; using a rolling tool to roll the surface of the carrier, such that the mold is filled up with the mixture uniformly, while the air among the mold, the carrier and the mixture is discharged; and finally projecting the ultraviolet light onto the ultraviolet curable resin, such that the ultraviolet curable resin can be cured at the carrier and removed from the mold, so as to form a light guide plate having a plurality of light-guiding micro structures. | 10-27-2011 |
20110298144 | OPTICAL WAVEGUIDE PRODUCTION METHOD - An optical waveguide production method, employs a light-transmissive mold having higher dimensional accuracy for formation of an over-cladding layer. The mold for the formation of the over-cladding layer is unitarily produced by molding a light-transmissive resin with the use of a mold component having the same shape as the over-cladding layer. A recess formed in the mold by removing the mold component in the production of the mold serves as a cavity for the formation of the over-cladding layer. For the formation of the over-cladding layer, a photosensitive resin for the over-cladding layer is injected into the cavity of the mold, and exposed through the mold to be cured while a core formed in a predetermined pattern on a surface of an under-cladding layer is immersed in the photosensitive resin. | 12-08-2011 |
20120175794 | OPTICAL WAVEGUIDE PRODUCTION METHOD - A plurality of regions for a plurality of optical waveguides are defined on a substrate. Then, optical waveguide under-cladding layers are formed on the respective regions, and dummy under-cladding layers are formed between adjacent ones of the optical waveguide under-cladding layers in a spaced relationship to the optical waveguide under-cladding layers. After cores are formed on the optical waveguide under-cladding layers and the dummy under-cladding layers, an over-cladding layer formation photosensitive resin is applied on the resulting substrate. Subsequently, portions of the resulting photosensitive resin layer for the respective optical waveguides are selectively exposed, and the exposed portions are defined as over-cladding layers. Thus, the optical waveguides are produced as each including the optical waveguide under-cladding layer, the core and the over-cladding layer, and separated from the substrate. | 07-12-2012 |
20120175795 | Hydrogen-Resistant Optical Fiber/Grating Structure Suitable For Use In Downhole Sensor Applications - A hydrogen-resistant optical fiber particularly well-suitable for downhole applications comprises a relatively thick pure silica core and a depressed-index cladding layer. Interposed between the depressed-index cladding layer and the core is a relatively thin germanium-doped interface. By maintaining a proper relationship between the pure silica core diameter and the thickness of the germanium-doped interface, a majority (preferably, more than 65%) of the propagating signal can be confined within the pure silica core and, therefore, be protected from hydrogen-induced attenuation problems associated with the presence of germanium (as is common in downhole fiber applications). The hydrogen-resistant fiber of the present invention can be formed to include one or more Bragg gratings within the germanium-doped interface, useful for sensing applications. | 07-12-2012 |
20130032958 | APPARATUS AND METHOD OF MANUFACTURING LIGHT GUIDE PLATE - An apparatus for manufacturing light guide plate includes a coater containing UV curable glue, a first pressing roller and a second pressing roller. The first pressing roller and the second pressing roller are located nearby each other and space a predetermined distance from each other. The coater distributes UV curable glue on the surface of the first pressing roller or the second pressing roller. The first pressing roller and the second pressing roller cooperatively press the distributed UV curable glue. At least one of the first pressing roller and the second pressing roller includes a transparent shell and a UV lamp in the transparent shell. The UV lamp emits UV light to the other pressing roller. The UV lamp solidifies the UV curable glue pressed between the first pressing roller and the second pressing roller. | 02-07-2013 |
20130043606 | Laser Sintering of Ceramic Fibers - A method and system for generating an optical fiber is provided. The method includes creating a green fiber consisting primarily of a ceramic material and sintering the green fiber with a laser by moving the green fiber through a beam of the laser to increase the density of the fiber after sintering. The system for creating a continuous optical fiber includes an extruder, a processing chamber and a laser. The extruder is configured to extrude a ceramic slurry as a green fiber. The processing chamber is configured to receive and process the green fiber. And, the laser is configured to direct a laser spot on the green fiber exiting the processing chamber to sinter the green fiber. | 02-21-2013 |
20130043607 | APPARATUS AND METHOD FOR CORRECTING WARPING OF LIGHT GUIDE PLATE - An apparatus for correcting any warping of a light guide plate includes a retaining device and a heating device. The retaining device includes a top pressing plate, a bottom supporting plate and an oil hydraulic cylinder on the top pressing plate. The oil hydraulic cylinder applies a pressing force on the top pressing plate, and the top pressing plate and the bottom supporting plate cooperatively sandwich and retain a light guide plate. The heating device has a coil of wire for surrounding the light guide plate. The coil of wire is configured for heating the light guide plate, the pressure and the heat thereby correcting the warp of the light guide plate. A method for correcting a warp of a light guide plate is also provided. | 02-21-2013 |
20130147071 | Method for Writing High Power Resistant Bragg Gratings Using Short Wavelength Ultrafast Pulses - A method for writing a Bragg grating in a glass optical waveguide is provided. Ultrafast optical pulses are generated, preferably in the femtosecond range and having a writing wavelength in the range of 300 nm to 700 nm and an intensity sufficient to induce a change of refractive index in the waveguide through densification. The optical pulses are diffracted using a phase mask, to generate an interference pattern having a pitch providing a fundamental Bragg resonance corresponding to the target wavelength to be reflected by the grating. The interference pattern is impinged on a region of the waveguide, which is heated to a temperature above a threshold and for a predetermined heating period. Advantageously, the heating step allows the reduction of photoinduced losses which would otherwise be present in the waveguiding properties of the waveguide. Optionally, gratings may be written through the polymer jacket of an optical fiber. | 06-13-2013 |
20130187301 | METHOD OF, AND APPARATUS FOR, MAKING AN OPTICAL WAVEGUIDE - There is provided a method of making an optical polymer waveguide having an arbitrary refractive index profile, the method including: a) providing a first input optical beam having a first beam intensity profile and a second input optical beam having a second beam intensity profile; b) combining the first and second input optical beams to form an output optical beam having an output beam intensity profile; and c) forming the optical waveguide on a substrate by: exposing the optical materials of the waveguide to the output optical beam; and curing the optical materials using said output optical beam. | 07-25-2013 |
20130200539 | APPARATUS AND METHOD OF MANUFACTURING LIGHT GUIDE PLATE HAVING REDUCED THICKNESS - An apparatus for manufacturing light guide plate includes a coater, a first pressing roller, a second pressing roller, and two UV lamps. The first pressing roller and the second pressing roller are positioned nearby each other and space a predetermined distance from each other. The coater distributes UV curable glue through a molding channel between the first pressing roller and the second pressing roller. The first pressing roller and the second pressing roller cooperatively press the distributed UV curable glue. Each of the first and the second pressing roller includes a hollow transparent main body and a molding core sleeving the main body. The molding core is made of resin containing fluorine. The two UV lamps are respectively received in the two main bodies and emit UV light to solidify the UV curable glue pressed between the first and the second pressing roller. | 08-08-2013 |
20130214439 | Three-Dimensional Direct-Write Lithography - A method of creating a region of index change in a photopolymer includes providing a photopolymer having a photosensitivity to light of a particular wavelength and creating a region of index change in the photopolymer by applying direct write lithography to expose the photopolymer of the region to light that includes the particular wavelength. | 08-22-2013 |
20130264729 | Method for Manufacturing Mold Assembly of Multi-Functional Light Guide Plate and its Application - The present invention provides a method for manufacturing a mold assembly of multi-functional light guide plate, which firstly forming a first photoresist layer with a light scattering pattern and forming a second photoresist layer with a light scattering pattern. After the processes of forming a conductive layer, electroforming a conductive mold, and separating a male mold from the conductive mold, a first male mold has a pattern corresponding to the light guiding pattern and a second male mold also has a pattern corresponding to the light scattering pattern. Besides, the present invention also provides a method for manufacturing a multi-functional light guide plate by using two of the mold assembly of the present invention. Because the produced multi-functional light guide plate has the advantages of high transmittancy, the multiple optical sheets in conventional display device can be replaced by the multi-functional light guide plate of the present invention. | 10-10-2013 |
20130307169 | METHOD FOR MANUFACTURING MICRO-OPTICAL ELEMENT - A method for manufacturing micro-optical element includes the following steps: (a) providing a mold core defining a plurality of replicated structures in a side surface of the mold core; (b) providing a transparent base board facing the side surface of the mold core defining the plurality of replicated structures; (c) distributing liquid replication material on the transparent base board corresponding to the plurality of the replicated structures via a droplet distribution tool; (d) molding the liquid replication material distributed on the transparent base board by the mold core; (e) solidifying the liquid replication material; (f) removing the mold core; and (g) cutting the transparent base board to form a plurality of micro-optical elements. | 11-21-2013 |
20140027935 | METHOD AND SYSTEM FOR LASER ABRASION OF OPTICAL FIBERS - In one aspect, the present invention relates to a system for abrasion of optical fibers. The system includes an adjustment member, a platform disposed on the adjustment member, and a focus block disposed on the platform. A laser is disposed above, and is in optical alignment with, the focus block. The laser abrades an optical fiber positioned on the focus block. | 01-30-2014 |
20140084501 | SYSTEM FOR FORMING AND MODIFYING LENSES AND LENSES FORMED THEREBY - A lens for placement in a human eye, such as intraocular lens, has at least some of its optical properties formed with a laser. The laser forms modified loci in the lens when the modified loci have a different refractive index than the refractive index of the material before modification. Different patterns of modified loci can provide selected dioptic power, toric adjustment, and/or aspheric adjustment provided. Preferably both the anterior and posterior surfaces of the lens are planar for ease of placement in the human eye. | 03-27-2014 |
20140232027 | CONTINUOUS METHOD FOR THE PRODUCTION OF LIGHT GUIDE PLATES - The present invention relates to a method for continuously producing light guide plates, e.g. for use as backlighting in LC displays, and to an apparatus for carrying out said method. | 08-21-2014 |
20140346693 | METHODS OF FORMING A TIR OPTICAL FIBER LENS - Methods of forming a total-internal-reflection (TIR) optical fiber lens are disclosed. The methods include heating an end of an optical fiber with a defocused infrared laser beam to form a bulbous tip having a curved outer surface that defines a lens surface. The bulbous tip is laser cleaved to define a TIR facet. Light traveling in the fiber diverges at an effective fiber end and is reflected by the TIR facet through the lens surface to form an image at an image plane. | 11-27-2014 |
20150021798 | METHOD OF MOLDING A THERMOPLASTIC RESIN ARTICLE AND APPARATUS FOR MOLDING SAME - Aimed at providing a method for molding a thermoplastic resin product and a molding apparatus therefor that enable productivity, transfer quality or the like to be improved. Provided is a method for molding a thermoplastic resin product that includes a heating step, a transfer step, a cooling step and a mold-releasing step, and wherein, in the heating step, a stamper is irradiated with infrared rays in a state where a cooling member is not irradiated with infrared rays, and at least in the final stage of the transfer step, the stamper and the cooling member are brought into contact. | 01-22-2015 |
20150054186 | LIGHT-GUIDE-PLATE CREATION METHOD AND DEVICE - Provided is a light guide plate for a liquid crystal screen display apparatus providing a favorable visual effect. The printing data of a light reflection pattern stored in a computer is transferred to an inkjet printer to allow the inkjet printer to subject a substantially-rectangular printing face surrounded by upper and lower and left and right edges of a light guide plate to a reflective printing for diffusing light emitted from a light source into the interior of the light guide plate. The printing data for performing the reflective printing is prepared so that a printing density is increased from the edges in the four directions corresponding to the edges in the four directions of the light guide plate toward one or more high density setting points set in front of the respective opposed edges. The reflective printing is performed using white ink including titanium oxide. | 02-26-2015 |
20150309251 | Method and Device for Producing at Least One Fiber Bragg Grating - The invention relates to a method and a device for producing at least one fibre Bragg grating in a waveguide, wherein the waveguide has at least one core having a first refractive index and the fibre Bragg grating contains a plurality of spatial regions which each occupy a partial volume of the core and have a second refractive index, wherein the spatial regions are each produced by the action of laser radiation on a partial volume of the core, wherein the laser radiation contains a plurality of pulse trains each containing a plurality of individual pulses, wherein the time interval between successive individual pulses is smaller than the time interval between successive pulse trains and the time interval between successive individual pulses is chosen between 10 ns and 100 ps or the pulse train has a duration of 50 fs to 50 ps. | 10-29-2015 |
20160131839 | METHODS FOR STRIPPING AN OPTICAL FIBER COATING USING BLUE OR BLUE-VIOLET RADIATION - Methods for stripping an optical fiber coating using blue or blue-violet radiation are disclosed. The method includes irradiating a portion of the coating with at least one radiation beam having a processing wavelength in the range of 400 nm to 460 nm for which the coating is substantially transparent. The intensity of the radiation beam exceeds the optical-damage threshold of the coating, and thereby a damaged coating portion that absorbs radiation at the processing wavelength is formed. The damaged coating portion is then irradiated with the radiation beam having an intensity below the optical-damage threshold to cause the damaged coating portion to absorb the radiation and to subsequently heat up and disintegrate to expose a section of the central glass portion of the optical fiber. | 05-12-2016 |
20160136889 | METHODS OF PRODUCING THREE-DIMENSIONAL OBJECTS FROM MATERIALS HAVING MULTIPLE MECHANISMS OF HARDENING - A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid including a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid polymer scaffold from the first component and also advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, and containing the second solidifiable component carried in the scaffold in unsolidified and/or uncured form; and (d) concurrently with or subsequent to the irradiating step, solidifying and/or curing the second solidifiable component in the three-dimensional intermediate to form the three-dimensional object. | 05-19-2016 |
20160152509 | Plasma Deposition Process with Removal of Substrate Tube | 06-02-2016 |
20160161672 | SYSTEMS AND METHODS FOR MULTIPLE-PASS STRIPPING OF AN OPTICAL FIBER COATING - Systems and methods for multiple-pass stripping of an optical fiber are disclosed. The method include irradiating a first portion of the coating with a first beam of radiation having a wavelength at which the coating is substantially transparent and an intensity that exceeds the optical-damage threshold of the coating to form a first damaged coating portion. The method also includes receiving at least a portion of the first radiation beam and redirecting it as a one or more redirected radiation beam to either the first portion of the coating to assist in forming the first damaged coating portion, or to one or more second portions of the coating to form one or more second damaged coating portions. The method additionally includes exposing a section of the central glass portion damaged portions of the coating. | 06-09-2016 |
20160186316 | Plasma Deposition Process with Removal of Substrate Tube - Disclosed are methods for manufacturing a precursor for a primary preform for optical fibers via an internal plasma deposition process. An exemplary method includes creating a first plasma reaction zone having first reaction conditions in the interior of a hollow substrate tube to deposit non-vitrified silica layers on the inner surface of the hollow substrate tube, and subsequently creating a second plasma reaction zone having second reaction conditions in the interior of the hollow substrate tube to deposit vitrified silica layers on the deposited, non-vitrified silica layers. Thereafter, the hollow substrate tube is removed from the deposited, vitrified silica layers to yield a deposited tube. | 06-30-2016 |