Patents Assigned to Nippon Sheet Glass Co.
  • Method of manufacturing transparent substrate, transparent substrate, and organic electroluminescent device having the transparent substrate
    Publication number: 20040229465
    Abstract: An organic EL device 10 is comprised of an ITO film-formed substrate 4 that is comprised of a glass substrate 1, an SiO2 film 2 that is formed on a surface of the glass substrate 1 and is for alkaline passivation, and an ITO film 3 that is formed on the surface of the SiO2 film 2, a hole transport layer 5 that is formed on the surface of the ITO film 3 and is for efficiently injecting holes into a light-emitting layer 6, a thin metallic film layer 7 that is formed on the light-emitting layer 6 and is for injecting electrons into the light-emitting layer 6, and the light-emitting layer 6 which emits light upon recombination of the injected holes and electrons. The surface smoothness of the glass substrate 1 is controlled to satisfy 0 nm≦Rz≦4 nm. As a result, non-luminescent spots do not occur and hence durability can be improved.
    Type: Application
    Filed: December 4, 2003
    Publication date: November 18, 2004
    Applicant: Nippon Sheet Glass Co., Ltd.
    Inventors: Shogo Kiyota, Shunji Wada, Yukihiro Katoh, Naoki Kinugasa
  • Planar lens
    Patent number: 6816319
    Abstract: The planar lens of the invention having a flat glass substrate, in which a refractive index distribution is formed by diffusing a refractive index-increasing component into the flat glass substrate in a substantially hemispherical form or semicylinder form, wherein the refractive index-increasing component is silver, and the flat glass substrate comprises Li as an alkali metal that is subject to an ion exchange with the silver.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: November 9, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Masahiro Tsuda, Shigekazu Yoshii, Koichi Sakaguchi
  • Light-sensitive detector and optical demultiplexer
    Patent number: 6816646
    Abstract: A light-sensitive detector (1) according to the present invention is constituted by an array (11) of photodetectors, a package (13) on which the array (11) of photodetectors is mounted, and a light-transmissible window (12) for making detection light incident on light-receiving surfaces of the photodetectors. The package (13) is provided with an aperture (14) which is formed in a position adjacent to the photodetectors so that light rays substantially parallel to the detection light can pass through the aperture (14).
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: November 9, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Kenichi Nakama, Hisao Nagata
  • Method of producing an optical module
    Patent number: 6812057
    Abstract: A method of producing an optical module in which with respect to a housing (12) having an optical part (a lens 10) received therein, an optical semiconductor device (such as a laser diode 14) of a package structure is center-aligned to be positioned on an optical axis of the optical part and is attached to the housing (12). The method comprises the steps of: applying an ultraviolet-or-heat-curable resin (30) onto a joint surface between the housing and the optical semiconductor device and curing the ultraviolet-or-heat-curable resin (30) by external irradiation with ultraviolet rays in the condition that the optical axes of the lens and the laser diode are center-aligned and joined with each other to thereby temporarily fix the optical semiconductor device to the housing; and complementarily curing non-irradiated portions of the ultraviolet-or-heat-curable resin by heating.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: November 2, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventor: Hiroyuki Tanaka
  • Line-illuminating device
    Patent number: 6808280
    Abstract: A line-illuminating device 10, 20 having a light guide 11, 21 of which the cross-sectional shape is rectangular and its one corner is chamfered to form an emission plane 11a, 21a is provided, in which the light guide 11, 21 is housed in a light guide casing 12, 22, wherein the chamfer dimension of the emission plane 11a, 21a is more than 40% of a height dimension of the light guide 11, 21. By enlarging the chamfer dimension and broadening the width of the emission plane 11a, 21a, the directional characteristics of the emitted light is expanded. In this manner, it is possible to reduce the extent of decrease in the quantity of illuminating light on a document surface when the document surface is elevated.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: October 26, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Yoshiyuki Uemura, Tomihisa Saito
  • Electrode plate for color display unit and production method therefor
    Patent number: 6809850
    Abstract: The invention provides an electrode plate for a color display, a manufacturing method thereof, and a color display using the display plate, capable of preventing the physical/chemical damage of a color filter or an organic protective film in a more convenient way and capable of improving the adhesive properties with a conductive film.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: October 26, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventor: Takayuki Toyoshima
  • Rod lens array and a process for producing the same
    Patent number: 6809868
    Abstract: An aligning tool having a plurality of grooves formed side by side is provided; gradient index rod lenses are placed in alignment within the grooves at an average spacing of 1 &mgr;m-5 &mgr;m; the gradient index rod lenses are fixed to form an integral unit as they maintain the aligned state; thereafter the end faces of each rod lens are polished.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: October 26, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shuya Ogi, Takashi Fukuzawa, Koichiro Iki, Masahide Wakisaka, Kiyotaka Sasaki
  • Optical device
    Patent number: 6807337
    Abstract: In an optical system in which light output from an optical fiber (11) is collimated into parallel light rays by a gradient index rod lens (13), reflected by a filter (4) and then converged again by the rod lens (13) so that the resulting light is coupled to an optical fiber (12), a principal beam component of the light output from the optical fiber (11) disagrees with an optical axis (32) of the optical fiber (12) to thereby cause a coupling loss. When W is the distance between optical axes (31 and 32) of optical fibers (11 and 12) and Z is the length of a rod lens (13) on an optical axis (33) of the rod lens, the optical fibers (11 and 12) and the rod lens (13) are disposed to satisfy the condition: W·g·(0.25−Z/P)2≦6×10−5 in which g is a gradient index distribution coefficient of the rod lens, and P is the periodic length of the rod lens (13).
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: October 19, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shigeo Kittaka, Masahiro Oikawa
  • Treating agent, cord for rubber reinforcement, and rubber product
    Publication number: 20040204525
    Abstract: A rubber reinforcing cord has a first film comprising a processing agent containing a resorcinol-formalin condensate, and a rubber latex, and a second film comprising a processing agent containing a rubber composition, a vulcanizer, and an epichlorohydrine-based rubber.
    Type: Application
    Filed: May 4, 2004
    Publication date: October 14, 2004
    Applicant: NIPPON SHEET GLASS CO., LTD.
    Inventor: Satoru Kawaguchi
  • Resin erecting lens array and method for fabricating the same
    Patent number: 6804061
    Abstract: A resin erecting lens array is fabricated by forming a coating of silicon dioxide compound on the surface of each of molded resin lens plates, forming an aperture stop for each micro-lens on the surface of each resin lens plate, applying an adhesive on end portions of each resin lens plate, spreading out the adhesive into the space between the resin lens plates being placed on top of one another, aligning an optical axis of each micro-lens on the resin lens plates, inserting heat-melting resin pins into the pin-insert holes of the resin lens plate, and melting at least one end of each resin pin to secure the resin lens plates together.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: October 12, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiroyuki Nemoto, Yoshiyuki Uemura
  • Substrate for reflection type liquid crystal display element
    Patent number: 6803973
    Abstract: A substrate for reflection type liquid crystal display elements is provided, which has a multilayer dielectric film (reflective mirror) which can have fewer layers than according to the conventional art and can thus be formed in a shorter time, and which can stably obtain an optical characteristic of a desired flatness across the visible region, and moreover can prevent the occurrence of coloring due to reflection. The reflective mirror is formed on top of a transparent substrate, and is comprised of a predetermined number of high-refractive-index first transparent films and low-refractive-index second transparent films laminated alternately on the transparent substrate. Either or both of the first transparent films and the second transparent films are arranged such that the film thickness thereof increases progressively or decreases progressively with distance from the transparent substrate.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: October 12, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Etsuo Ogino, Masahiro Ikadai
  • Optical write-in head, image forming apparatus using the same, and method for inspecting the apparatus
    Publication number: 20040196355
    Abstract: An optical write-in head for obtaining a clear image even in printing at a relatively high recording density without generating strip-like irregularities in most cases. The optical write-in head applies light carrying image information to a photosensitive substance. The optical write-in head includes an array light source having a plurality of dot light sources each of which selectively emits the light corresponding to the image information, and a lens array facing the array light source. The lens array has a plurality of lens elements which corresponds to the plurality of dot light sources respectively. An angular aperture &thgr; of each of the lens elements is set in a range of about 14° to 18°.
    Type: Application
    Filed: April 19, 2004
    Publication date: October 7, 2004
    Applicant: Nippon Sheet Glass Co., Ltd.
    Inventors: Tomitaka Takagi, Koichiro Iki
  • Microchemical system, and photothermal conversion spectroscopic analysis method
    Publication number: 20040196466
    Abstract: A microchemical system according to which measurement can be carried out with high sensitivity. The microchemical system 1 has a two-wavelength multiplexing device in which gradient index rod lenses 501 and 502 are connected together at an end face of each thereof and a dielectric multi-layer film filter 503 is formed between these end faces. Exciting light and detecting light is multiplexed by the two-wavelength multiplexing device, and then the exciting light and the detecting light are guided to an optical fiber unit 10 through an optical fiber 101 with a single mode. The optical fiber unit 10 has built therein a gradient index rod lens 102 at a leading end thereof, and the exciting light and the detecting light are irradiated onto a sample from the gradient index rod lens 102.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 7, 2004
    Applicant: NIPPON SHEET GLASS CO., LTD.
    Inventors: Jun Yamaguchi, Akihiko Hattori
  • Method for cutting mother rod lens
    Patent number: 6796145
    Abstract: A method that accurately cuts mother rod lenses and increases production yield. The method includes arranging the mother rod lenses such that the optical axes of the mother rod lenses are parallel to one another, forming a lens block having perpendicular first and second side surfaces to integrally hold the predetermined mother rod lenses, arranging the lens block at a predetermined position, emitting laser beams respectively toward the first and second side surfaces, receiving reflection lights of the laser beams with first and second screens, respectively, adjusting the perpendicularity of the side surfaces relative to a cutting surface of the cutter such that the reflection lights of the side surfaces hit base positions on the first and second screen, and cutting the lens block and the mother rod lenses with the cutter to produce a plurality of rod lenses.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: September 28, 2004
    Assignee: Nippon Sheet Glass Co., LTD
    Inventor: Hiroshi Koshi
  • Optical fiber collimator and optical fiber collimator array
    Patent number: 6795613
    Abstract: An optical fiber collimator which facilitates optical adjustment. The optical fiber collimator includes a gradient index rod lens, and an optical fiber optically connected to the rod lens. An anti-reflection film is formed on one end face of the rod lens. The anti-reflection film has a refractive index which continuously changes from a value substantially equal to that of a center refractive index of the rod lens to a value substantially equal to that of the refractive index of the optical fiber along a film thickness direction of the anti-reflection film. A refractive index matching medium having a refractive index substantially equal to that of the optical fiber bonds the anti-reflection film to the end face of the optical fiber.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: September 21, 2004
    Assignee: Nippon Sheet Glass Co., Lt.
    Inventors: Hiroyuki Tanaka, Takashi Fukuzawa, Toshiaki Anzaki, Kenji Mori
  • Method of manufacturing glass panel and glasspanel manufactured by the method
    Patent number: 6793990
    Abstract: A glass panel (P) including a pair of glass sheets (1A), (1B) disposed in a spaced relationship with each other with forming a gap (V) therebetween, characterized in that peripheral edges of the glass sheets (1A), (1B) are bonded directly by a single metal material (3) for sealing the gap (V) hermetically.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: September 21, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Koichi Sakaguchi, Shinjiro Domi, Shigeki Nakagaki, Katsuaki Suganuma
  • Separator for valve regulated lead acid battery and valve regulated lead acid battery
    Publication number: 20040180265
    Abstract: A separator for a valve regulated lead acid battery is composed mainly of fine glass fibers 1 and also contains inorganic powder 3, beaten natural pulp 2, and heat-weldable organic fibers 4. The heat-weldable organic fibers 4 have a fineness of 1.5 d (deniers) or less and a fiber length of 1 mm or more, and the amount of the heat-weldable organic fibers is from 3% to 15% by weight. The separator is excellent in resistance against a short circuit between a positive electrode plate and a negative electrode plate of the battery such as an electrochemical short circuit, for example a short circuit due to lead penetration, and a mechanical short circuit. The separator is also excellent in folding endurance, in durability against repetition of folding, and in tearing strength, and allows easy formation of envelope-like separator, thus preventing active materials from being coming off at the sides thereof.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 16, 2004
    Applicant: NIPPON SHEET GLASS CO., LTD.
    Inventors: Shoji Sugiyama, Atsushi Asada, Shuhei Nagakubo
  • Fiber-treating agent, glass fiber and rubber product both made with the fiber treating agent
    Patent number: 6790901
    Abstract: A glass fiber containing a fiber processing agent for increasing the surface strength of a rubber product, such as a rubber belt or a tire, and a rubber product containing the glass fiber. The fiber processing agent is comprised of a dispersion solution having a 2-component dispersoid including a rubber latex and an epoxy resin. By using the 2-component dispersoid solution comprised of the epoxy resin, which has excellent strength and also has excellent heat resistance and water resistance, and the rubber latex, which is flexible, a glass fiber and a rubber product can be obtained having greatly increased durability, without bringing about a drop in quality, even under a poor environment.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: September 14, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventor: Satoru Kawaguchi
  • Heat insulating and shielding glass panel
    Patent number: 6790494
    Abstract: A heat insulating/heat shielding glass panel is produced by forming a functional film on a sheet of plate glass, which film is high in solar radiation reflectance, small in solar radiation absorptivity, and has emissivity of 0.20 or less, superposing another sheet of plate glass on the side of the functional film, and adhesively sealing the two sheets of plate glass, under the condition that a gap layer is provided between the two sheets of plate glass. Accordingly, there is obtained a glass panel which has a sufficient heat insulating performance and a sufficient heat shielding performance, and in which no warping is generated even when suffering the solar radiation.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: September 14, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Osamu Asano, Terufusa Kunisada, Tetsuo Minaai
  • Light absorbing pattern film coated article production method and light absorbing pattern film coated articles
    Patent number: 6790583
    Abstract: A method of producing a light absorbing pattern film coated article with a transmitted light spectrum distribution corresponding to the pattern of a photomask, wherein a light absorbing film coating solution, containing a silicon oxide raw material, a titanium oxide raw material, which contains titanium oxide microparticles, and a gold microparticle raw material, is coated onto the surface of a substrate, the photomask is positioned on top of said coated film, ultraviolet light is irradiated onto said coated film, and said coated film is thereafter heated. By the abovementioned method of producing, this invention can provide light absorbing film coated articles with various transmitted light spectra distribution while keeping the visible light reflectivity low.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: September 14, 2004
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventor: Mitsuhiro Kawazu