Reshaping Or Surface Deformation Of Glass Preform Patents (Class 65/102)
  • Patent number: 11123822
    Abstract: A manufacturing method for a glass substrate having a hole with a depth of d (?m) or more includes irradiating the glass substrate with a laser beam emitted from a CO2 laser oscillator for an irradiation time t (?sec), to form a hole in the glass substrate. The laser beam is delivered to the glass substrate after being condensed at a focusing lens. A power density Pd (W/cm2), defined by Pd=P0/S where P0 and S are a power and a beam cross-sectional area of the laser beam just prior to entering the focusing lens, respectively, is 600 W/cm2 or less. The irradiation time t (?sec) satisfies t?10×d/(Pd)1/2.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: September 21, 2021
    Assignee: AGC Inc.
    Inventor: Motoshi Ono
  • Patent number: 10968505
    Abstract: A process for producing a molded material that can form metallic glass material in a state of lower viscosity, and can manufacture a small structure of several 10 ?m or less in a comparatively short time while precisely controlling shape thereof, by the process comprising a heating step of heating supercooled state metallic glass material or a solid metallic glass material at a temperature increase rate of 0.5 K/s to a temperature at or higher than a temperature at which a crystallization process for a supercooled liquid of the metallic glass material begins, and a molding step of transfer molding the metallic glass material until the crystallization process for the supercooled liquid of the metallic glass material has been completed. In addition, the purpose is also to provide the molded material that has been formed by this process, a wavefront control element, and a diffraction grating.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 6, 2021
    Inventors: Hidemi Kato, Wataru Yashiro
  • Patent number: 10822267
    Abstract: Glass-ceramics exhibiting a Vickers indentation crack initiation threshold of at least 15 kgf are disclosed. These glass-ceramics may be ion exchangeable or ion exchanged. The glass-ceramics include a crystalline and amorphous phases generated by subjecting a thin precursor glass article to ceramming cycle having an average cooling rate in the range from about 10° C./minute to about 25° C./minute. In one or more embodiments, the crystalline phase may comprise at least 20 wt % of the glass-ceramics. The glass-ceramics may include ?-spodumene ss as the predominant crystalline phase and may exhibit an opacity ?about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness and colors an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance included of a* between ?3 and +3, b* between ?6 and +6, and L* between 88 and 97.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: November 3, 2020
    Inventors: Lionel Joel Mary Beunet, Marie Jacqueline Monique Comte, Allan Mark Fredholm, Qiang Fu, Anne Paris, Sophie Peschiera, Charlene Marie Smith
  • Patent number: 10611658
    Abstract: An inverter unit for a hollow glassware forming machine comprises a supporting structure; a first and a second pick-and-place arm having one or more recesses for picking up glassware and coupled to such supporting structure so as to rotate about a first axis and so as to translate along such first axis between an open position and a closed position; and a centering device having a head, which can rotate about a second axis. The centering device also has a transmission mechanism, which converts the rotary motion of the head into a translational motion of the supporting structure along the first axis with respect to a fixed base.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 7, 2020
    Assignee: BOTTERO S.P.A.
    Inventors: Maurizio Barolo, Zdenko Kuz
  • Patent number: 10435325
    Abstract: A mold with a multi-layer coating is disclosed. The mold may include a mold body having an outer surface and a multi-layer coating disposed on the outer surface. The multi-layer coating may include a diffusion barrier layer disposed on the outer surface of the mold body and an intermetallic layer disposed on the diffusion barrier layer, wherein the intermetallic layer comprises Ti, Al, and an additional metal selected from the group consisting of Zr, Ta, Nb, Y, Mo, Hf, and combinations thereof. The diffusion barrier layer may restrict diffusion of metal from the mold body to the intermetallic layer.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: October 8, 2019
    Inventors: Jill Marie Hall, Ljerka Ukrainczyk
  • Patent number: 10406556
    Abstract: One exemplary embodiment of this disclosure relates to a transfer molding assembly including a chamber, a die within the chamber, a first gas control device configured to provide a first gas into the chamber, and a second gas control device configured to provide a second gas into the die.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: September 10, 2019
    Inventor: David C. Jarmon
  • Patent number: 10179747
    Abstract: A cover window manufacturing apparatus includes a plurality of fixed plates, a plurality of moving plates, a plurality of molds and a driver. The plurality of fixed plates is layered and spaced apart at a distance from each other. The plurality of moving plates is layered, spaced apart at a distance from each other and respectively disposed under the plurality of fixed plates. A plurality of connection members integrally connects the plurality of moving plates with each other. The plurality of molds is respectively provided on the plurality of moving plates, and inner spaces for molding the cover window are respectively defined in the plurality of molds. The driver is coupled to one of the plurality of moving plates, and is configured to move the plurality of moving plates towards the plurality of fixed plates such that the plurality of molds are pressed to the plurality of fixed plates.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: January 15, 2019
    Inventor: Moon-Seok Roh
  • Patent number: 10138162
    Abstract: Vacuum ultraviolet light with a wavelength of 200 nm or less is applied on the joining surfaces of first and second workpieces made from a crystal substrate and a glass substrate, or a glass substrate and a glass substrate from a light irradiation unit. The workpieces are conveyed to a workpiece cleaning and laminating mechanism by a conveyance mechanism, the joining surfaces are subjected to mega-sonic cleaning as needed, and the workpieces are aligned with the joining surfaces thereof facing each other, and laminated such that the joining surfaces are in contact with each other. After being laminated, the laminated workpieces are conveyed to a workpiece heating mechanism and heated to increase the workpiece temperature to a predetermined temperature, and this temperature is maintained until joining is completed. The laminated workpieces are brought into a thermally expanded state upon heating, and are joined in this state.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: November 27, 2018
    Inventors: Akira Kato, Kinichi Morita, Shinji Suzuki
  • Patent number: 10131086
    Abstract: A method for the replication of a textured surface of a master is disclosed, in which the textured surface of the master is comprised of micron-scale cones having nano- or micro-scale surface features. Alternatively, the master may be comprised of micron-scale structures, nano-scale structures, and micron scale structures having nano-scale surface features. Replication can be achieved through a molding or embossing technique. Using these technique, the textured surface of the master is faithfully replicated onto the surface of the replica. A number of representative materials and additional processing steps are also disclosed. The replicated texture exhibits many useful properties, including enhanced hydrophobicity and reduced light reflection properties, making the disclosed method a simple and attractive alternative to existing texturing techniques.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: November 20, 2018
    Assignee: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Barada K. Nayak, Paul O. Caffrey
  • Patent number: 10078181
    Abstract: A robust, rugged, and small hybrid fiber for use in reference chambers was created using a Hollow-Core Photonic Bandgap Fiber (HCPBF). The hybrid fiber and associated chamber apparatus is amenable to mass production and can be used for wavelengths of light from 400 nm to 2000 nm. The apparatus and method of making thereof is described herein.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: September 18, 2018
    Inventors: Archie T Brown, Frederick T Brown
  • Patent number: 10047014
    Abstract: Disclosed is an agglomerated TiN powder, the powder comprising spherical aggregates having particle diameters of 40 to 80 ?m and formed by the agglomeration of Ti and N having the atomic fractions of 72% and 28% respectively. Also provided is a TiN coating obtained using the powder. The three-strong-peak phase of the coating is a TiN phase, and also has partial TiO, TiO2, and Ti3O oxide phases; the coating has layered distribution of bright and dark phases, and the joint between the interior of the layered structure and the layer structure is provided with a small number of pores; the joint between the coating and a base has no microscopic defects such as cracks and is well jointed. The supersonic plasma-sprayed TiN coating achieves hardness as high as 1210HV0.1, thereby enhancing the wear resistance of the coating. The coating has good fracture toughness, thereby enhancing the fracture mechanical performance inside of the coating and extending the fatigue life of the coating.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: August 14, 2018
    Inventors: Zhiguo Xing, Haidou Wang, Lihong Dong, Guozheng Ma, Binshi Xu
  • Patent number: 9796586
    Abstract: A method for fabricating three-dimensional microstructures is presented. The method includes: disposing a substantially planar reflow material between two molds; heating the reflow material while the reflow material is disposed between the two molds; and reflowing the reflow material towards the bottom surface of one of the molds by creating a pressure gradient across the reflow material. At least one of molds includes geometrics features that help to shape the reflow material and thereby form a complex three-dimensional microstructure.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: October 24, 2017
    Inventors: Khalil Najafi, Tal Nagourney, Jae Yoong Cho
  • Patent number: 9597829
    Abstract: A method of drawing a material into sheet form includes forming a preform comprising at least one material as a large aspect ratio block wherein a first transverse dimension of the preform is much greater than a second transverse dimension substantially perpendicular to the first transverse dimension. A furnace having substantially linearly opposed heating elements one spaced from the other is provided and the heating elements are energized to apply heat to the preform to create a negative thermal gradient from an exterior surface along the first transverse dimension of the preform inward toward a central plane of the preform. The preform is drawn in such a manner that the material substantially maintains its first transverse dimension and deforms across its second transverse dimension.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: March 21, 2017
    Assignee: Everix, Inc.
    Inventor: Esmaeil Banaei
  • Patent number: 9580346
    Abstract: A method for manufacturing an optical element includes pressing a phosphate-based glass containing Bi2O3 in a proportion of 10 mass % or higher and 30 mass % or lower with a hot mold; and then cooling the same, in which pressure equal to or higher than the critical pressure of oxygen and equal to or lower than a strength of glass is continuously applied to the glass from the time of bringing the glass into contact with the pressing surface of the mold at a glass viscosity of log ?=9 [dPa·sec] or higher and 10 [dPa·sec] or lower until the glass viscosity log ? increases to 12 [dPa·sec] by cooling.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: February 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shigeo Urai
  • Patent number: 9579832
    Abstract: A method of shortening cycle time required to compression mold shingle or tile is provided, wherein carrier plates are comprised of a surface material and a base, and receive a thermoplastic material, thereon. The roofing material is applied to the carrier plate and the carrier plate is subjected to induction heating, by which its surface material has its temperature raised, without substantially raising the temperature of the carrier plate base, such that the thermoplastic material applied thereto is kept heated in the compression mold. Cooling of the thermoplastic material is by heat transfer from the carrier plate surface material to the carrier plate base, and with both materials having good heat conduction capability. The carrier plate surface material has a high receptivity to being heated by induction heating relative the carrier plate base. The carrier plates are serially delivered through the process, to the compression mold.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: February 28, 2017
    Assignee: CertainTeed Corporation
    Inventors: Thomas Kevin MacKinnon, David Nelson, Nolan Loy Son, Trevor Reeve
  • Patent number: 9578688
    Abstract: There is provided a heat treatment apparatus, including: a processing container configured to perform a heat treatment on substrates accommodated in the processing container; a heating unit configured to cover an outer circumference of the processing container with a predetermined space defined the heating unit and the processing container; a discharge pipe installed outside of the processing container and within the predetermined space, and configured to communicate with an interior of the processing container to discharge an exhaust gas from the interior of the processing container; and a heat insulating member configured to cover a circumference of the discharge pipe.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: February 21, 2017
    Inventors: Hidekazu Sato, Hideki Takahashi, Tsutomu Yamamoto
  • Patent number: 9321668
    Abstract: Provided are a manufacturing method for a glass molded body and a manufacturing apparatus for a glass molded body, which employs the manufacturing method. The manufacturing method includes the steps of: heating molds each containing a glass material; press-molding the glass material; and cooling the press-molded glass material. The heating step includes: heating the molds with heating members arranged on both sides of a conveying direction of a support for conveying the molds in one direction; and conveying the two molds through rotation of the support or the like so as to reverse, at least once, an arrangement order of the two molds, which are arranged on a supporting surface of the support conveying the molds between the heating members, with respect to the conveying direction of the support.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: April 26, 2016
    Inventors: Tadayuki Fujimoto, Kiyokane Yamazaki, Yasumasa Wada
  • Patent number: 9139461
    Abstract: A solar concentrator includes a solid body of a transparent material, which comprises a light coupling-in surface and a light coupling-out surface. A supporting frame and a light-transmitting part are located between the light coupling-in surface and the light coupling-out surface.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: September 22, 2015
    Assignee: Doctor Optics SE
    Inventors: Wolfram Wintzer, Lars Arnold, Hagen Goldammer
  • Patent number: 9038419
    Abstract: A method of making a heat treated (HT) substantially transparent coated article to be used in shower door applications, window applications, tabletop applications, or any other suitable applications. Certain embodiments relate to a method of making a coated article including heat treating a glass substrate coated with at least layer of or including carbon (e.g., diamond-like carbon (DLC)) and an overlying protective film thereon. The protective film may be of or include both (a) an oxygen blocking or barrier layer, and (b) a release layer of or including zinc oxynitride (e.g., ZnOxNz). Following and/or during heat treatment (e.g., thermal tempering, or the like) the protective film may be entirely or partially removed.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: May 26, 2015
    Assignees: Centre Luxembourgeois de Recherches Pour le Verre et la Ceramique S.A. (C.R.V.C.), Guardian Industries Corp.
    Inventors: Jens-Peter Müller, Vijayen S. Veerasamy
  • Publication number: 20150140241
    Abstract: A method of producing a spiral cut transparent tube using laser machining includes using an ultrafast laser beam comprising a burst of laser pulses and focusing the laser beam on the transparent tube to enable relative movement between the laser beam and the transparent tube by moving the laser beam, the glass tube or both the laser beam and the glass tube. A beam waist is formed external to the surface of the transparent tube wherein the laser pulses and sufficient energy density is maintained within the transparent tube to form a continuous laser filament therethrough without causing optical breakdown. The method and delivery system makes a spiral cut in the transparent tube.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventor: S. ABBAS HOSSEINI
  • Patent number: 9027364
    Abstract: A method includes forming a glass ribbon by heating and softening a glass plate preform and drawing the glass plate preform to a predetermined thickness in a heating furnace; and performing coring on the glass ribbon in order to form circular substrates in a straight line along a longitudinal direction of the glass ribbon.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: May 12, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Toshiyuki Asai, Tetsuo Suzuki
  • Publication number: 20150121963
    Abstract: A glass product manufacturing method that includes a step of disposing a workpiece configured of a glass material between two mutually-opposing punches, a step of starting to apply a pulsed current to the workpiece, and a step of starting to apply pressure to the workpiece using the two punches. The glass product is obtained from the workpiece through a discharge plasma process that causes the workpiece to deform in a state where the temperature of the workpiece has been increased by the application of the pulsed current.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Inventor: Satoru Hachinohe
  • Publication number: 20150121961
    Abstract: The present invention provides a laser processing method in which a modified layer is formed inside a workpiece by irradiating the workpiece with a laser beam having such a wavelength as to be transmitted through the workpiece with the focal point of the laser beam positioned inside the workpiece. In the laser processing method, the spectral line width of the laser beam is set equal to or smaller than 10 pm.
    Type: Application
    Filed: October 28, 2014
    Publication date: May 7, 2015
    Inventors: Yukio Morishige, Kuniaki Iwashiro
  • Publication number: 20150121962
    Abstract: A laser material processing system which includes a pulsed fiber laser source having a continuous wavelength bandwidth of larger than 100 nm and pulse width of from 100 femtosecond to 1 microsecond, a broad band laser emitted from one core of an optical fiber, where the broad band laser is applied to a subject material to produce removal of the subject material and/or color change of the subject material.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 7, 2015
    Inventors: Shibin Jiang, Jihong Geng, Qing Wang
  • Publication number: 20150119228
    Abstract: The optical glass is described that may be an oxide glass including, denoted as cation %, a total of 5 to 60% of B3+ and Si4+ (with 5 to 50% of B3+), a total of equal to or higher than 5% of Zn2+ and Mg2+, a total of 10 to 50% of La3+, Gd3+, Y3+, and Yb3+, and a total of 6 to 45% of Ti4+, Nb5+, Ta5+, W6+, and Bi3+ (a total content of Ti4+ and Ta5+ being higher than 0% and a content of W6+ being higher than 5%).
    Type: Application
    Filed: April 24, 2013
    Publication date: April 30, 2015
    Inventors: Tomoaki Negishi, Yasuhiro Fujiwara
  • Publication number: 20150114044
    Abstract: A method for processing a glass sheet includes a scribing step of heating a part of a glass sheet with laser light which is transmitted through the glass sheet from a first main surface of the glass sheet to a second main surface of the glass sheet, and moving an irradiation position of the laser light on the glass sheet, thereby forming a scribe line on at least the second main surface of the glass sheet.
    Type: Application
    Filed: December 31, 2014
    Publication date: April 30, 2015
    Inventors: Isao SAITO, Takahiro Nagata
  • Publication number: 20150107305
    Abstract: A glass molding method for molding a glass preform to a glass product via an assembly mold includes the following steps. The glass preform is preheated to a glass molding temperature. The assembly mold is heated to a predetermined mold temperature lower than the glass molding temperature and maintained at the mold temperature. The preheated glass preform is transferred to the assembly mold. The assembly mold is closed together for molding the glass preform to the glass product. The glass product and the assembly mold are gradually cooled to an open temperature. Then the assembly mold is opened to take the glass product out of the assembly mold.
    Type: Application
    Filed: December 22, 2013
    Publication date: April 23, 2015
    Applicant: WEIS LIMITED
    Inventor: KANG WEI
  • Patent number: 8993115
    Abstract: An aspect of the present invention relates to a press-molding glass material, which comprises a core part comprised of optical glass and a silicon oxide film of less than 15 nm in thickness covering at least a portion of the core part, the portion being to be an optically functional surface, as well as has a surface free energy as measured by a three-liquid method of equal to or lower than 75 mJ/m2. A further aspect of the present invention relates to a method of manufacturing a press-molding glass material comprising a core part comprised of optical glass and a silicon oxide film covering at least a portion of the core part to be an optically functional surface.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: March 31, 2015
    Assignee: Hoya Corporation
    Inventors: Takashi Igari, Takeshi Ishimine
  • Publication number: 20150052950
    Abstract: Refractory glass-forming tools, including glass-forming molds incorporating protective metal nitride surface coatings, with optional alumina barrier layers disposed between the mold bodies and coating for high-temperature nitride coating stability, offering particular advantages for the manufacture by direct molding of optically finished glass products such as information display cover glasses from refractory alkali aluminosilicate glasses at molding temperatures up to and above 800° C.
    Type: Application
    Filed: November 5, 2014
    Publication date: February 26, 2015
    Inventors: Jiangwei Feng, Ljerka Ukrainczyk
  • Publication number: 20150047393
    Abstract: According to one embodiment, a method of manufacturing a glass article having a three-dimensional shape includes heating a glass article blank to a temperature above a setting temperature and coupling the glass article blank to an open-faced mold. The open-faced mold includes a molding region that has a three-dimensional shape that generally corresponds to the shape of the glass article and has an anisothermal temperature profile within the molding region. The method further includes maintaining an anisothermal temperature profile along the glass article blank and cooling the glass article blank while the glass article blank is coupled to the molding region of the open-faced mold to set the shape of the glass article.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 19, 2015
    Inventors: Weiwei Luo, Rohit Rai, Ljerka Ukrainczyk, Zheming Zheng, Sam Samer Zoubi
  • Publication number: 20150017479
    Abstract: The present invention relates to a production method for a glassy carbon mold, and, more specifically, relates to a production method for a glassy carbon mold including the steps of: placing a mixture having a thermosetting resin, a curing agent, and a viscosity adjusting solvent between a thermosetting resin substrate and a master pattern formed by a micro-nano process; pressing either the master pattern or the thermosetting resin substrate and applying heat to form a cured thermosetting resin pattern part on the substrate; and removing the master pattern, and subjecting the substrate and the cured thermosetting resin pattern.
    Type: Application
    Filed: January 30, 2013
    Publication date: January 15, 2015
    Inventors: Seok Min Kim, Jong Won Seok, Tae Hyoung Kim, Jong Hyun Ju
  • Publication number: 20150008816
    Abstract: A wavelength conversion structure comprises a sintered body comprising a mixture of a wavelength conversion material and a glass composition, wherein the wavelength conversion material comprises a phosphor and the glass composition comprises ZnO—BaO—SiO2—B2O3.
    Type: Application
    Filed: January 15, 2014
    Publication date: January 8, 2015
  • Patent number: 8869563
    Abstract: The invention relates to a device for marking the inside of a hollow glass item having at least one plunger comprising at least one raised and/or hollow pattern and a support assembly for said at least one plunger that can be moved between a first position in which the plunger is outside the item, and a second position in which the plunger is inside the item, and having radial movement means for moving said at least one plunger in a passive position spaced away from the inner surface of the side wall of the item and an active position pressed against said inner surface to imprint said at least one raised and/or hollow pattern.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: October 28, 2014
    Assignee: Pochet du Courval
    Inventors: Pascal Froissart, Sebastien Baliteau
  • Publication number: 20140311185
    Abstract: Provided are a manufacturing method for a glass molded body and a manufacturing apparatus for a glass molded body, which employs the manufacturing method. The manufacturing method includes the steps of: heating molds each containing a glass material; press-molding the glass material; and cooling the press-molded glass material. The heating step includes: heating the molds with heating members arranged on both sides of a conveying direction of a support for conveying the molds in one direction; and conveying the two molds through rotation of the support or the like so as to reverse, at least once, an arrangement order of the two molds, which are arranged on a supporting surface of the support conveying the molds between the heating members, with respect to the conveying direction of the support.
    Type: Application
    Filed: December 27, 2012
    Publication date: October 23, 2014
    Inventors: Tadayuki Fujimoto, Kiyokane Yamazaki, Yasumasa Wada
  • Patent number: 8865314
    Abstract: A press molding glass material including: a core portion composed of optical glass; and a surface layer covering the core portion, wherein the surface layer includes an outermost layer contacting with a molding surface of a molding die in press molding and an intermediate layer adjacent to the outermost layer, the outermost layer is a silicon oxide film having a surface free energy measured by a three-solution method of equal to or less than 75 mJ/m2 and having a film thickness of less than 15 nm, and the intermediate layer is a film composed of a film material having a bond-radius difference from a silicon oxide based on a stoichiometric composition of more than 0.10 ?, wherein, in a case in which the bond-radius difference is more than 0.10 ? and equal to or less than 0.40 ?, a film thickness of the intermediate layer is equal to or less than 5 nm.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: October 21, 2014
    Assignee: Hoya Corporation
    Inventors: Takashi Igari, Kenya Abiko
  • Patent number: 8850850
    Abstract: To produce a meniscus lens from synthetic quartz glass for use in a microlithography apparatus, which lens has a first optical surface (7) and a second optical surface (8) with the same direction of curvature as the first optical surface (7), SiO2 particles are formed by oxidation or flame hydrolysis of a silicon-containing starting compound and deposited layer by layer on a substrate to form a cylindrical SiO2 blank which contains layers with a surface normal extending in the direction of growth. To allow such layers, which have however the least possible adverse effect on optical or mechanical properties, it is proposed according to the invention that the blank is plastically worked in a hot forming process under the effect of a deforming force to form a preform (6), which has at least the first curved surface (7) and in which the layers are curved in the direction of curvature, and that the meniscus lens is obtained from the preform.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: October 7, 2014
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventor: Stefan Hengster
  • Patent number: 8844320
    Abstract: A manufacturing method of a sheet glass material for magnetic disk, the method includes, dropping process for dropping a lump of molten glass; pressing process for sandwiching simultaneously the lump from both sides of the dropping path of the lump with surfaces of a pair of dies facing together, and performing press forming to the lump to obtain a sheet glass material, wherein at least one of the pair of dies has a concave shape with respect to the dropping path of the lump.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: September 30, 2014
    Assignee: Hoya Corporation
    Inventors: Hideki Isono, Hidekazu Tanino
  • Publication number: 20140233161
    Abstract: A method for manufacturing a glass cover is provided, which includes following steps. A glass substrate is provided, wherein the glass substrate has a front surface and a back surface opposite to the front surface, and the front surface has a display region and a non-display region adjacent to the display region. The non-display region of the glass substrate is hazed. A glass cover and an electronic device are also provided. The glass cover is adapted to be disposed at an installation opening of a casing of the electronic device. The glass cover includes a glass substrate. The glass substrate has a front surface and a back surface opposite to the front surface, and the front surface has a display region and a non-display region adjacent to the display region, and the non-display region is hazed.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Applicant: HTC CORPORATION
    Inventor: Wen-Hao Liu
  • Publication number: 20140223965
    Abstract: Lithium silicate glass ceramics and glasses containing specific oxides of tetravalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Application
    Filed: October 11, 2012
    Publication date: August 14, 2014
    Applicant: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Patent number: 8776548
    Abstract: Systems, methods, apparatus and products relate to drawing and blowing of ultra thin glass substrates, such as flexible display glass sheets, for example, organic light emitting diode (OLED) displays, liquid crystal displays (LCDs), and/or other flexible substrate applications, such as lighting, and/or other technologies, such as electro-wetting (EW), electro-phoretic display applications, etc. A localized heat source centripetally heats a vertical glass pre-form, while a pressurized air source blows the heated glass to expansion. An air bearing may centripetally blow air against the expanding pre-form to limit expansion and prevent contact of the pre-form with the localized heat source. Meanwhile, the pre-form is pulled vertically to draw the heated glass. The pre-form may float in a floatation mechanism to compensate for gravity when the pre-form is pulled upward. The blown and drawn pre-form may be cooled, coated with a polymer layer, and cut into a ribbon by in-line devices as it exits the air bearing.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: July 15, 2014
    Assignee: Corning Incorporated
    Inventors: Thierry Luc Alain Dannoux, Claude Jacques Julien Vanotti
  • Patent number: 8752403
    Abstract: A method is provided for shaping a glass sheet in more than one dimension, and within the one or more dimensions forming non-uniform shapes between, for example, the leading edge and the trailing edge of the same glass sheet. Such shaping is achieved by the selective location, in first and second shaping zones, of shaping rolls having first and second shaping configurations and by varying the speed of the glass sheet as it moves through the shaping zones, thus varying the length of time that selected portions of the glass sheet are in contact with certain shaping rolls.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: June 17, 2014
    Assignee: Pilkington Group Limited
    Inventors: Robert J. Boisselle, Efrain Serrano, John Tomik
  • Publication number: 20140123703
    Abstract: A thickness of at least one preselected portion of a substrate, such as glass substrate for example, is controlled. A laser beam is directed to the at least one preselected portion of the substrate in a viscous state, thereby increasing a temperature and reducing a viscosity of the at least one preselected portion of the substrate in a viscous state sufficiently to cause the at least one preselected portion of the glass substrate to attain a desired thickness. The laser beam after it is generated can be directed to a reflecting surface from which the laser beam is reflected to the at least one preselected portion of the substrate in the viscous state. The substrate can comprise a glass ribbon produced in a downdraw glass forming process for example, and the laser beam can be directed onto a plurality of preselected portions of the glass ribbon.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Inventors: Philip Robert LeBlanc, Correy Robert Ustanik
  • Publication number: 20140116094
    Abstract: Apparatus, systems and methods for alignment of a glass member for high temperature processing are disclosed. The high temperature processing can, for example, pertain to a slumping process to mold glass into a predetermined shape (e.g., a three-dimensional shape). In one embodiment, a glass slumping system can have a mold and an alignment system that support a glass member to be slumped relative to the mold. The alignment system may have a plurality of alignment members being configured to move away from the glass member as the temperature increases during the slumping process to allow the glass member to bend around the mold without interference.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 1, 2014
    Inventors: Donald Ross, Adam Stagnaro, Matthew Theobald, Andrew Davidson, Michael Kane Pilliod
  • Publication number: 20140053606
    Abstract: An amorphous alloy contains 54 at % or more and 79 at % or less Re, 8 at % or more and 28 at % or less Ir, and 11 at % or more and 18 at % or less Nb. A molding die includes a release film composed of the amorphous alloy. A method for producing an optical element, the method including press-molding a glass preform with the molding die.
    Type: Application
    Filed: August 21, 2013
    Publication date: February 27, 2014
    Inventors: Hirotaka Fukushima, Satoko Midorikawa
  • Patent number: 8650907
    Abstract: The method produces a reshaped glass-ceramic article by forced reshaping of a flat green glass part during a ceramicizing process with temporarily lowered viscosity due to crystallization heat. To perform the forced reshaping economically the forced reshaping takes place in a continuous oven for ceramicizing and in an oven section in which the viscosity of the green glass part is temporarily lowered as a result of crystallization heat. An apparatus for performing the process is provided in the continuous oven including different active reshaping devices and/or a hollow mold. The method produces glass-ceramic articles with undamaged surfaces corresponding to surfaces produced during the making of the green glass part (smooth or structured, e.g. knobbed).
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: February 18, 2014
    Assignee: Schott AG
    Inventors: Martin Taplan, Herwig Scheidler, Ioannis Kosmas, Friedrich-Georg Schroeder, Wolfgang Schmidbauer, Torsten Gabelmann, Dieter Schoenig
  • Patent number: 8652365
    Abstract: A mold set includes: a first mold and a second mold placed so that they sandwich an optical material and face each other; and a first spacer and a second spacer provided between the first and second molds, wherein: the first spacer secures an interval between the first and second molds at a first temperature achieved in a process of pressurizing the optical material; the first spacer shrinks in a mold opening-closing direction more greatly than the second spacer while the first temperature is changing to a second temperature achieved in a process of cooling the optical material; and the second spacer secures the interval between the first and second molds at the second temperature.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: February 18, 2014
    Assignee: Olympus Corporation
    Inventor: Norimitsu Nagayama
  • Publication number: 20140041413
    Abstract: The invention relates to a method and apparatus for shaping an elongated glass body 81, which is a glass tube or glass rod and has an initial profile, to an elongated glass body having a different profile. In order to be properly shaped, an elongated glass body 81 passes through, in a hot malleable state, a nip, which is formed by squeezing rollers 1 and which has a nip width which is less than an outer dimension of the initial profile. In order to accomplish an enhanced precision of the shaping process, according to the invention the position of at least one of the squeezing rollers is varied continuously so that a contact area between the respective squeezing roller and the hot glass body is varied cyclic reciprocating movement. Disturbing effects such as local overheating of the squeezing rollers or an accumulation of dirt or glass particles on the surface of the squeezing rollers can thus be effectively prevented.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicant: SCHOTT AG
    Inventors: Reiner BARTSCH, Ralf BIERSACK, Wolfgang PULZ, Csaba DEBRECZENY
  • Patent number: 8646290
    Abstract: A manufacturing apparatus of the present invention has a pair of dies that form each cylindrical surface, and a plane member that forms side surfaces of an element. The upper die and the lower die has a cylindrical surface which is worked so as to have generatrix which connects intersection points between a non-arc axis and a cylindrical section and between an arc center axis and the cylindrical section. The plane member is pressed against reference surfaces of the upper die and the lower die. In this state, a glass material is put between the upper die and the lower die, and a distance between the upper die and the lower die is decreased. As a result, the cylindrical surfaces of the upper die and the lower die and the plane of the plane member are transferred onto the glass material.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: February 11, 2014
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Kazuyuki Ogura, Yoshihiro Kamada, Kojiro Takatori, Kazunari Tada
  • Patent number: 8643953
    Abstract: A method of replicating at least one optical element is provided, the method including the steps of: providing a substrate with two large sides and at least one pre-defined replication site defined by a through hole or blind holes at corresponding locations on both large sides of the substrate; and adding, by replication, a replicated structure to the substrate, the replicated structure adhering to the substrate and having, at the replication site, replication material in the through hole or in the two blind holes, respectively and a first replicated surface and a second replicated surface, the first and second replication surfaces facing towards opposite sides.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: February 4, 2014
    Assignee: Heptagon Micro Optics Pte. Ltd.
    Inventors: Markus Rossi, Hartmut Rudmann
  • Publication number: 20140026618
    Abstract: A forming mold made from a polyporous refractory material is provided for forming a glass piece. The forming mold includes an outer surface and a plurality of forming structures provided on the outer surface. Each of the forming structures includes a forming surface matching with a shape of the glass piece. The forming mold is structured and arranged to be pumped down from the outer surface to generated an absorption force on molten glass material provided at the at least one forming surface for sucking the molten glass material on the forming structure to form the glass piece.
    Type: Application
    Filed: December 14, 2012
    Publication date: January 30, 2014