Patents by Inventor Hidemitsu Takeuchi

Hidemitsu Takeuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7942561
    Abstract: A rod- or plate-shaped light guide includes a first end that receives illuminating light incident thereon, a bottom surface having a reflecting portion thereon for reflecting the light, an emitting face which emits the reflected light, and a protruding portion protruding longitudinally and continuously from the light guide at a second end thereof. The protruding portion has a reduced peripheral dimension compared to a peripheral dimension of an adjacent portion of the light guide, and a reflective body is provided on the protruding portion and covers a longitudinal end face of the protruding portion extending perpendicular to the emitting face. When viewed along an axial direction of the light guide, the reflective body does not jut out from an end face of the light guide even when the body wraps on to a side surface of the protruding portion or expansion occurs.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: May 17, 2011
    Assignee: Nippon Sheet Glass Compny, Limited
    Inventors: Takeshi Ishimaru, Takashi Kishimoto, Hidemitsu Takeuchi, Tomihisa Saito, Hideki Azuma, Takahiro Hashimoto
  • Patent number: 7812304
    Abstract: A rod-shaped light guide which does not cause unevenness in color at the portion near an incident face is produced by injection-molding transparent resin such as acryl and its surfaces include a light-emitting surface, a bottom face, left and right sides and end faces. One end face opposes a light emitting unit, and light scattering patterns for scattering light incident from the end face are formed on the bottom face. The light scattering patterns are different in shape between a portion near the end face as the incident face and a portion away from the end face.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: October 12, 2010
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Makoto Ikeda, Hiroyuki Nemoto, Takashi Kishimoto, Takeshi Ishimaru, Hirohiko Iwase, Hidemitsu Takeuchi, Tomihisa Saito
  • Patent number: 7722223
    Abstract: A structure of a line lighting device permits a rod-like light guide to be attached to a case without rubbing against the case. An end portion of the rod-like light guide provided with a pin is inserted into an opening in a case main body and pushed down, thus making the pin engage with a recess in the case main body. At this time, a distal end of the rod-like light guide is inserted, to some extent, into an opening in a light emitting unit fixing portion. Subsequently, the rod-like light guide is pushed down and pivoted around the pin so as to be completely contained within the case main body. In this state, the distal end of the rod-like light guide is fitted into the opening and the end face of the rod-like light guide is flush with the outer side face of the light emitting unit fixing portion.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: May 25, 2010
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Tomihisa Saito, Hidemitsu Takeuchi, Takeshi Ishimaru
  • Publication number: 20090294630
    Abstract: An image sensor and a manufacturing method thereof are provided, so that the warp or the distortion is not caused even if there is the thermal expansion difference or the thermal contraction difference in the longitudinal direction between the linear illuminating device and the frame. The image sensor comprises a linear illuminating device for illuminating an original; a light-receiving element array for receiving reflected light from the original; a lens array for focusing the original on the light-receiving element array; a frame for containing the linear illuminating device, the lens array, and the light-receiving element array; and a resilient retaining portion for pressing the linear illuminating device, which is mounted in the frame, into the frame.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 3, 2009
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Tomihisa Saito, Takashi Kishimoto, Hidemitsu Takeuchi, Takeshi Ishimaru, Masahide Wakisaka
  • Publication number: 20090218525
    Abstract: A rod-shaped light guide which does not cause unevenness in color at the portion near an incident face is produced by injection-molding transparent resin such as acryl and its surfaces include a light-emitting surface, a bottom face, left and right sides and end faces. One end face opposes a light emitting unit, and light scattering patterns for scattering light incident from the end face are formed on the bottom face. The light scattering patterns are different in shape between a portion near the end face as the incident face and a portion away from the end face.
    Type: Application
    Filed: April 28, 2006
    Publication date: September 3, 2009
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Makoto Ikeda, Hiroyuki Nemoto, Takashi Kishimoto, Takeshi Ishimaru, Hirohiko Iwase, Hidemitsu Takeuchi, Tomihisa Saito
  • Patent number: 7555194
    Abstract: An improved illumination device shortens a redundant area of insufficient light intensity close to a longitudinal end thereof. The device includes a casing, a bar-shaped light guide housed in the casing to cause a light-emitting surface thereof to be exposed, a light-emitting unit secured to an end section of the casing, wherein light from the light-emitting unit is introduced into the bar-shaped light guide through the end face thereof and is totally reflected within the bar-shaped light guide to be emitted through the light-emitting surface, and a shielding section provided to cover an end section of the bar-shaped light guide including the redundant area at the end section of the casing close to the light-emitting unit.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: June 30, 2009
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Makoto Ikeda, Hiroyuki Nemoto, Takashi Kishimoto, Takeshi Ishimaru, Hirohiko Iwase, Hidemitsu Takeuchi, Tomihisa Saito
  • Publication number: 20090073715
    Abstract: A light emitting unit comprises a light emitting element, a light emitting element substrate for mounting the light emitting element, and a light emitting element substrate frame member provided with a window for exposing the light emitting element, wherein the inside of the window is sealed with a first resin and a second resin, the ratio of the second resin relative to the first resin becomes smaller toward the outside of the window from the inside thereof. The first resin is a transparent resin, and the second resin is a colored resin with a high color value or a resin including a light reflective material and/or a light scattering material. Since a sectional border line between the first resin and the second resin is a curved line, the light reflected from the bottom section of the window among the light emitted from the light emitting element can also be efficiently emitted to the outside.
    Type: Application
    Filed: April 3, 2006
    Publication date: March 19, 2009
    Inventors: Tomihisa Saito, Hiroyuki Nemoto, Hidemitsu Takeuchi, Takashi Kishimoto, Naofumi Sumitani
  • Publication number: 20090034296
    Abstract: A light emitting unit comprises a light emitting element, a light emitting element substrate for mounting the light emitting element, a light emitting element substrate frame member provided with a window for exposing the light emitting element, and an electrode for supplying electricity to the light emitting element, wherein the light emitting element substrate is a metal and the light emitting element is mounted directly on the light emitting element substrate. The light emitting unit is also characterized in that the light emitting element substrate is a metal, a metal oxide film is provided on the light emitting element substrate, and the light emitting element is mounted on the electrode formed on the metal oxide film.
    Type: Application
    Filed: April 3, 2006
    Publication date: February 5, 2009
    Applicants: Nippon Sheet Glass Co., Limited, Nichia Corporation
    Inventors: Tomihisa Saito, Hiroyuki Nemoto, Hidemitsu Takeuchi, Takashi Kishimoto, Naofumi Sumitani
  • Publication number: 20090003000
    Abstract: A structure of a line lighting device permits a rod-like light guide to be attached to a case without rubbing against the case. An end portion of the rod-like light guide provided with a pin is inserted into an opening in a case main body and pushed down, thus making the pin engage with a recess in the case main body. At this time, a distal end of the rod-like light guide is inserted, to some extent, into an opening in a light emitting unit fixing portion. Subsequently, the rod-like light guide is pushed down and pivoted around the pin so as to be completely contained within the case main body. In this state, the distal end of the rod-like light guide is fitted into the opening and the end face of the rod-like light guide is flush with the outer side face of the light emitting unit fixing portion.
    Type: Application
    Filed: December 22, 2006
    Publication date: January 1, 2009
    Inventors: Tomihisa Saito, Hidemitsu Takeuchi, Takeshi Ishimaru
  • Publication number: 20090003016
    Abstract: To provide a rod-like light guide and a line lighting device including the rod-like light guide, both of which are easy to include in an image reading device, a contact-type image sensor and an image reading device. For instance, a protruding portion having a flat or curved surface is formed by grinding an end face of a rod-like light guide in a longitudinal direction while leaving at least 80% of the surface area of the end face, and a reflective surface is formed by bonding a heat transfer film to the protruding portion. Thus, even if a portion of the protrusion portion melts when performing thermal processing on the heat transfer film, the portion will not jut out beyond a cross-sectional area of the rod-like light guide, and the rod-like light guide can be easily contained in a case.
    Type: Application
    Filed: December 27, 2006
    Publication date: January 1, 2009
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Takeshi Ishimaru, Takashi Kishimoto, Hidemitsu Takeuchi, Tomihisa Saito, Hideki Azuma, Takahiro Hashimoto
  • Patent number: 7284891
    Abstract: A line-illuminating device which is resistant to shrinkage problems caused by repetition of heating and cooling includes a white casing made of polycarbonate or the like, a light guide made of an acrylic resin or the like and accommodated in the casing such that the light-emitting surface thereof is exposed, and light-emitting elements (for example, light-emitting diodes) as a light source provided on both ends of the casing so as to abut against the end surfaces of the light guide without a gap. The casing is divided into two portions in the longitudinal direction, and a gap is formed between the two divided portions. With this gap, even if the light guide shrinks due to repetition of heating and cooling, the divided portions can effectively shrink together with the light guide via the gap, and the abutting state between the end surface of the light guide and the light-emitting element can be maintained.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: October 23, 2007
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Tomihisa Saito, Takashi Kishimoto, Hidemitsu Takeuchi, Yukihiro Kato
  • Patent number: 7088905
    Abstract: The present invention provides a light guide, a line-illuminating device, and an image-scanning device that provide excellent uniformity in the amount of light produced. A light-reflecting portion comprised of spherical concave surfaces becomes a reflecting surface having spherical convex surfaces when it is seen from the inside of the light guide. Even when the incident angle of light from the light source unit is slightly offset, the reflection angle in spherical convex surfaces significantly changes, and light is reflected uniformly toward the upper surface serving as a light-emitting surface. In particular, when the fine spherical concave portions of the light-reflecting portion have a small depth, the incident light from the end surface is reflected toward the upper surface, serving as a light-emitting surface, and both side surfaces without reflecting back to the light-emitting unit side, so that uniform reflection can be achieved.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: August 8, 2006
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiroyuki Nemoto, Hirohiko Iwase, Hidemitsu Takeuchi, Takashi Kishimoto
  • Publication number: 20060165370
    Abstract: The present invention provides a light guide, a line-illuminating device, and an image-scanning device that provide excellent uniformity in the amount of light produced. A light-reflecting portion comprised of spherical concave surfaces becomes a reflecting surface having spherical convex surfaces when it is seen from the inside of the light guide. Even when the incident angle of light from the light source unit is slightly offset, the reflection angle in spherical convex surfaces significantly changes, and light is reflected uniformly toward the upper surface serving as a light-emitting surface. In particular, when the fine spherical concave portions of the light-reflecting portion have a small depth, the incident light from the end surface is reflected toward the upper surface, serving as a light-emitting surface, and both side surfaces without reflecting back to the light-emitting unit side, so that uniform reflection can be achieved.
    Type: Application
    Filed: February 15, 2006
    Publication date: July 27, 2006
    Applicant: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiroyuki Nemoto, Hirohiko Iwase, Hidemitsu Takeuchi, Takashi Kishimoto
  • Publication number: 20060152942
    Abstract: A line-illuminating device which is resistant to shrinkage problems caused by repetition of heating and cooling includes a white casing made of polycarbonate or the like, a light guide made of an acrylic resin or the like and accommodated in the casing such that the light-emitting surface thereof is exposed, and light-emitting elements (for example, light-emitting diodes) as a light source provided on both ends of the casing so as to abut against the end surfaces of the light guide without a gap. The casing is divided into two portions in the longitudinal direction, and a gap is formed between the two divided portions. With this gap, even if the light guide shrinks due to repetition of heating and cooling, the divided portions can effectively shrink together with the light guide via the gap, and the abutting state between the end surface of the light guide and the light-emitting element can be maintained.
    Type: Application
    Filed: October 9, 2003
    Publication date: July 13, 2006
    Inventors: Tomihisa Saito, Takashi Kishimoto, Hidemitsu Takeuchi, Yukihiro Kato
  • Patent number: 7076148
    Abstract: A light guide, a line-illuminating device, and an image-scanning device are provided which are excellent in uniformity of the light amount. A light-reflecting portion comprised of tubular concave surfaces becomes a reflecting surface having tubular convex surfaces when seen from the inside of the light guide. With such structure, even when the incident angle of light from a light source unit slightly displaces, the reflection angle in the tubular convex surfaces significantly changes. In an irregular surface having a triangular shape, as in a conventional example, the incident angle becomes almost uniform in the area far from the light source unit, and thereby the reflection angle also becomes uniform. Consequently, it is difficult to achieve uniform reflection in the main-scanning direction. However, with the tubular concave surfaces, light is reflected uniformly toward the upper surface as a light-emitting surface.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: July 11, 2006
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiroyuki Nemoto, Hirohiko Iwase, Hidemitsu Takeuchi, Takashi Kishimoto
  • Publication number: 20060120098
    Abstract: An illumination device includes a casing, a bar-shaped light guide housed in the casing to expose a light-emitting surface thereof, a light-emitting unit secured to an end section of the casing, wherein light from the light-emitting unit is introduced within the light guide through an end face thereof and then totally reflected within the light guide to be emitted through the light-emitting surface, a shielding section which covers an end section of the light guide at the end section of the casing close to the light-emitting unit and is provided on the light-emitting surface side of the light guide, a notch is formed at an end of the light guide on the light-emitting surface side close to the light-emitting unit, and light from the light-emitting unit is reflected on a rear surface of the shielding section through a gap between the notch and the light-emitting unit to be introduced into the light guide.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 8, 2006
    Applicant: Nippon Sheet Glass Co., Ltd.
    Inventors: Makoto Ikeda, Hiroyuki Nemoto, Takashi Kishimoto, Takeshi Ishimaru, Hirohiko Iwase, Hidemitsu Takeuchi, Tomihisa Saito
  • Publication number: 20050265684
    Abstract: A light guide, a line-illuminating device, and an image-scanning device are provided which are excellent in uniformity of the light amount. A light-reflecting portion comprised of tubular concave surfaces becomes a reflecting surface having tubular convex surfaces when seen from the inside of the light guide. With such structure, even when the incident angle of light from a light source unit slightly displaces, the reflection angle in the tubular convex surfaces significantly changes. In an irregular surface having a triangular shape, as in a conventional example, the incident angle becomes almost uniform in the area far from the light source unit, and thereby the reflection angle also becomes uniform. Consequently, it is difficult to achieve uniform reflection in the main-scanning direction. However, with the tubular concave surfaces, light is reflected uniformly toward the upper surface as a light-emitting surface.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 1, 2005
    Applicant: Nippon Sheet Glass Co., Ltd.
    Inventors: Hiroyuki Nemoto, Hirohiko Iwase, Hidemitsu Takeuchi, Takashi Kishimoto
  • Patent number: 4929316
    Abstract: A method of manufacturing an organic semi-conductor solid electrolytic capacitor wherein a conductive polymer thin film layer of a heterocyclic compound, i.e., pyrrole, thiophene or furan, is formed as a solid electrolyte on the surface of a metal substrate having a dielectric oxide film formed thereon by electrolytic oxidation polymerization carried out in an electrolytic solution which contains pyrrole, thiophene or furan as a heterocyclic compound and an aliphatic or aromatic sulfonic acid or a salt thereof as a supporting electrolyte in an organic solvent, for example, acetonitrile, acetone or propylene carbonate.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: May 29, 1990
    Assignee: Niksuko Corporation
    Inventors: Yoshihiro Harakawa, Seiya Takahashi, Koji Izawa, Hidemitsu Takeuchi, Keizo Ikari
  • Patent number: 4805074
    Abstract: A solid electrolytic capacitor has a capacitor element including a metal plate, such as a plate of aluminum, tantalum, niobium or titanium, capable of having a dielectric oxidation layer formed thereon, a resist layer of a desired shape formed on a predetermined portion of the metal plate, a dielectric oxidation layer formed on a surface of the metal plate at one portion thereof defined by the resist layer, a polymer layer of a heterocyclic compound such as pyrrole, furan or thiophene formed on the dielectric oxidation layer, a conductive layer formed on the polymer layer, a first terminal attached to another portion of the metal plate defined by the resist layer, and a second terminal attached to the conductive layer. In an embodiment, a plurality of the metal plates are stacked to obtain a capacitor element having a multi-layered structure.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: February 14, 1989
    Assignee: Nitsuko Corporation
    Inventors: Yoshihiro Harakawa, Koji Izawa, Hidemitsu Takeuchi, Shinji Nakamura, Sadamu Toita
  • Patent number: 4785380
    Abstract: A solid electrolytic capacitor, and a method of manufacturing the same, includes a capacitor element which comprises a metal plate capable of having a dielectric oxidation layer formed thereon, a dielectric oxidation layer formed on a surface of the metal plate, a polymer layer of a heterocyclic compound formed on the dielectric oxidation layer, a conductive layer formed on the polymer layer, wherein the polymer layer near a defect interface of the dielectric oxidation layer is converted into an insulator, and terminals provided on respective ones of the metal plate and conductive layer.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: November 15, 1988
    Assignee: Nitsuko Corporation
    Inventors: Yoshihiro Harakawa, Koji Izawa, Hidemitsu Takeuchi, Shinji Nakamura, Sadamu Toita