Patents by Inventor Masashi Tatsukawa

Masashi Tatsukawa 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).

  • Publication number: 20230143394
    Abstract: An insulation paste for a current collector for a lithium-ion secondary battery contains an inorganic filler (A), a binder (B), a dispersion resin (C), and a solvent (D), wherein the insulation paste has a viscosity (shear rate of 1 s?1) of 2000 mPa·s or more, and has a TI value of greater than 1, and the TI value is a ratio of the viscosity at a shear rate of 1 s?1 to the viscosity at a shear rate of 1000 s?1.
    Type: Application
    Filed: March 17, 2021
    Publication date: May 11, 2023
    Applicant: KANSAI PAINT CO., LTD.
    Inventors: Hiroe HOMMA, Masashi TATSUKAWA, Yoshiyuki YUKAWA
  • Patent number: 11067244
    Abstract: A vehicle headlamp includes: a first light source configured to form at least a high-beam light distribution pattern; and a second light source including a laser diode and configured to form an additional light distribution pattern that irradiates a distance equal to or farther than that of the high-beam light distribution pattern. An optical axis of the second light source is configured to be inclined by a predetermined angle in the left-right direction from an optical axis of the first light source, at least during a period while light is irradiated.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: July 20, 2021
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Masashi Tatsukawa
  • Publication number: 20210131637
    Abstract: A vehicle headlamp includes: a first light source configured to form at least a high-beam light distribution pattern; and a second light source including a laser diode and configured to form an additional light distribution pattern that irradiates a distance equal to or farther than that of the high-beam light distribution pattern. An optical axis of the second light source is configured to be inclined by a predetermined angle in the left-right direction from an optical axis of the first light source, at least during a period while light is irradiated.
    Type: Application
    Filed: October 20, 2020
    Publication date: May 6, 2021
    Inventor: Masashi TATSUKAWA
  • Patent number: 10302268
    Abstract: A vehicular headlamp includes: a light source emitting light; a projection lens through which the light emitted from the light source is transmitted; and a reflective plate positioned between the light source and the projection lens so as to reflect a portion of the light emitted from the light source toward the projection lens. An emission direction of at least a portion of the light reflected by the reflective plate from the projection lens is different from an emission direction of light emitted from the projection lens and forming a light distribution pattern.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 28, 2019
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Masashi Tatsukawa
  • Patent number: 10113702
    Abstract: A lighting apparatus configured to be mounted on a vehicle has a housing that defines and forms at least a part of a lamp chamber. and a lamp unit disposed in the lamp chamber. The lamp unit has a light source, a heat sink to which the light source is fixed, a projection lens through which at least a part of light emitted from the light source passes, a first screw that extends through the heat sink and has a first manipulation portion, and a second screw that extends through the heat sink and has a second manipulation portion. A reference position of an optical axis of the projection lens is adjusted in a first direction by manipulating the first manipulation portion. The reference position of the optical axis is adjusted in a second direction intersecting the first direction by manipulating the second manipulation portion.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: October 30, 2018
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki Shibata, Takashi Inoue, Masashi Tatsukawa
  • Publication number: 20180149332
    Abstract: A vehicular headlamp includes: a light source emitting light; a projection lens through which the light emitted from the light source is transmitted; and a reflective plate positioned between the light source and the projection lens so as to reflect a portion of the light emitted from the light source toward the projection lens. An emission direction of at least a portion of the light reflected by the reflective plate from the projection lens is different from an emission direction of light emitted from the projection lens and forming a light distribution pattern.
    Type: Application
    Filed: November 17, 2017
    Publication date: May 31, 2018
    Inventor: Masashi TATSUKAWA
  • Patent number: 9979154
    Abstract: Provided is a semiconductor laser device having enhanced heat dissipation properties. A semiconductor laser device 10 comprises a stem 11, a cap 12 that is attached to an upper surface of the stem 11, a semiconductor laser element 13, and a power-feeding member 14 that is at least partially buried in the stem 11. The power-feeding member 14 comprises an element-side terminal 32 that is electrically connected to the semiconductor laser element 13, and an external terminal 33. The external terminal 33 of the power-feeding member 14 is exposed on a side surface or the upper surface of the stem 11, and an attaching surface 11b that is attached to a mounting object is provided in a lower surface of the stem 11.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: May 22, 2018
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuichi Shibata, Mitsuyuki Mochizuki, Masashi Tatsukawa
  • Patent number: 9772082
    Abstract: A vehicular lamp includes a projection lens, a light source disposed to the rear of the projection lens, and an additional lens. First light from the light source is irradiated to the front through the projection lens to form a predetermined light distribution pattern. The projection lens has an elongated external shape when the lamp is seen from the front. The additional lens is disposed on a circumference of the projection lens and configured to control second light from the light source to forwardly pass through the additional lens.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: September 26, 2017
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Masashi Tatsukawa
  • Publication number: 20170244217
    Abstract: Provided is a semiconductor laser device having enhanced heat dissipation properties. A semiconductor laser device 10 comprises a stem 11, a cap 12 that is attached to an upper surface of the stem 11, a semiconductor laser element 13, and a power-feeding member 14 that is at least partially buried in the stem 11. The power-feeding member 14 comprises an element-side terminal 32 that is electrically connected to the semiconductor laser element 13, and an external terminal 33. The external terminal 33 of the power-feeding member 14 is exposed on a side surface or the upper surface of the stem 11, and an attaching surface 11b that is attached to a mounting object is provided in a lower surface of the stem 11.
    Type: Application
    Filed: October 8, 2015
    Publication date: August 24, 2017
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuichi SHIBATA, Mitsuyuki MOCHIZUKI, Masashi TATSUKAWA
  • Patent number: 9481291
    Abstract: A vehicle lamp includes a light source, a projection lens through which at least a portion of light emitted from the light source passes, and an adjustment mechanism configured to adjust a reference position of an optical axis of the projection lens. The adjustment mechanism includes a first member having a movement axis, a second member holding the first member, a first screw arranged to adjust the reference position in a first direction, and a second screw arranged to adjust the reference position in a second direction intersecting the first direction. The first member is arranged such that the movement axis is positioned on a plane perpendicular to the optical axis and including a focal point of the projection lens. An action by a rotation of the first screw and an action by a rotation of the second screw are applied to one of the first and second members.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: November 1, 2016
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki Shibata, Masashi Tatsukawa
  • Publication number: 20150138822
    Abstract: A first lamp unit includes a first light-emitting device, a reflector substantially having a form of an ellipse having a focal point located at the first light-emitting device or the neighborhood thereof, and a first partial lens located in front of the reflector. A second lamp unit adjacent to the first lamp unit includes a second light-emitting device, and a second partial lens located in front of the second light-emitting device and joined to the first partial lens. The first partial lens has a form produced by cutting the side toward the second partial lens with a substantially vertical plane, and the second partial lens has a form produced by extending the plane of section of the first partial lens along a predetermined line.
    Type: Application
    Filed: December 4, 2014
    Publication date: May 21, 2015
    Inventor: Masashi TATSUKAWA
  • Patent number: 8960978
    Abstract: A vehicular headlamp (100) including a first lamp unit (10) provided with a first LED (11) and a first translucent member (13) internally reflecting light from the first LED (11) twice and then emitting the reflected light, a second lamp unit (20) provided with a second LED (21) and a second translucent member (23) internally reflecting light from the second LED (21) twice and then emitting the reflected light, and a third lamp unit (30) provided with a third LED (31) and a third translucent member (33) internally reflecting light from the third LED (31) twice and then emitting the reflected light. The first translucent member (13), the second translucent member (23), and the third translucent member (33) are coupled together at their ends in the vehicle width direction.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: February 24, 2015
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Naoki Uchida, Masashi Tatsukawa
  • Publication number: 20150023040
    Abstract: A vehicular lamp includes a projection lens, a light source disposed to the rear of the projection lens, and an additional lens. First light from the light source is irradiated to the front through the projection lens to form a predetermined light distribution pattern. The projection lens has an elongated external shape when the lamp is seen from the front. The additional lens is disposed on a circumference of the projection lens and configured to control second light from the light source to forwardly pass through the additional lens.
    Type: Application
    Filed: July 16, 2014
    Publication date: January 22, 2015
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventor: Masashi TATSUKAWA
  • Patent number: 8888344
    Abstract: A vehicle lamp unit comprising a cylindrical lens arranged on an optical axis extending in a front-back direction of the vehicle lamp unit, a semiconductor light-emitting element arranged on the optical axis behind a rear focal line of the cylindrical lens, and a reflector, which comprises a right concave curved surface located in a right side region of the reflector, and a left concave curved surface is located in a left side region of the reflector, wherein each of the right and left concave curved surfaces comprises an inner reflecting surface near the optical axis, wherein the light reflected by the inner reflecting surface of the right concave curved surface is directed to the left side region across the optical axis, and the light reflected by the inner reflecting surface of the left concave curved surface is directed to the right side region across the optical axis.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: November 18, 2014
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Masashi Tatsukawa
  • Publication number: 20140321132
    Abstract: A vehicle lamp includes a light source, a projection lens through which at least a portion of light emitted from the light source passes, and an adjustment mechanism configured to adjust a reference position of an optical axis of the projection lens. The adjustment mechanism includes a first member having a movement axis, a second member holding the first member, a first screw arranged to adjust the reference position in a first direction, and a second screw arranged to adjust the reference position in a second direction intersecting the first direction. The first member is arranged such that the movement axis is positioned on a plane perpendicular to the optical axis and including a focal point of the projection lens. An action by a rotation of the first screw and an action by a rotation of the second screw are applied to one of the first and second members.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki Shibata, Masashi Tatsukawa
  • Publication number: 20140153274
    Abstract: At least a part of light emitted from a light source fixed to a heat sink 11 passes through a projection lens 14. A first screw 81 having a first manipulation portion 81a and a second screw 91 having a second manipulation portion 91a extend through the heat sink 11. A reference position of an optical axis Ax is adjusted in a first direction by manipulating the first manipulation portion 81a. The reference position of the optical axis Ax is adjusted in a second direction intersecting the first direction by manipulating the second manipulation portion 91a. Of the heat sink 11, at least a portion in which the first manipulation portion 81a and the second manipulation portion 91a are disposed, is disposed outside the housing 2.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 5, 2014
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki Shibata, Takashi Inoue, Masashi Tatsukawa
  • Patent number: 8632228
    Abstract: A vehicle headlamp includes: a lamp outer casing; a lamp unit; a stationary frame; a movable frame that is supported by the stationary frame to be rotatable about a first rotating shaft extending in a lateral direction or a second rotating shaft extending in a vertical direction; a lens unit disposed in the lamp outer casing and supported by the movable frame; a first aiming operation shaft that adjusts an optical axis, and a second aiming operation shaft that adjusts the optical axis. A focal point of the light reflected by a reflector is coincident with a center of the first or second rotating shaft. The lens unit is rotated about the first or second rotating shaft such that a distance between the focal point and the projection lens is constant. The heat sink is positioned on the outside of the lamp outer casing.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: January 21, 2014
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Hiroki Shibata, Masashi Tatsukawa, Hiroshi Otaka
  • Publication number: 20130322105
    Abstract: A vehicular headlamp (100) including a first lamp unit (10) provided with a first LED (11) and a first translucent member (13) internally reflecting light from the first LED (11) twice and then emitting the reflected light, a second lamp unit (20) provided with a second LED (21) and a second translucent member (23) internally reflecting light from the second LED (21) twice and then emitting the reflected light, and a third lamp unit (30) provided with a third LED (31) and a third translucent member (33) internally reflecting light from the third LED (31) twice and then emitting the reflected light. The first translucent member (13), the second translucent member (23), and the third translucent member (33) are coupled together at their ends in the vehicle width direction.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventors: Naoki Uchida, Masashi Tatsukawa
  • Patent number: 8585265
    Abstract: A vehicle headlamp includes: a lamp outer casing; a lamp unit including: a light source unit having a light source that emits light, a reflector and a heat sink; a stationary frame; a movable frame that is supported by the stationary frame to be rotatable about a rotating shaft; a lens unit supported by the movable frame and having a projection lens; a first aiming operation shaft that adjusts an optical axis in the lateral direction; and a second aiming operation shaft that adjusts the optical axis in the vertical direction. A focal point of the light reflected by the reflector is coincident with a center of the rotating shaft. The lens unit is moved relative to the stationary frame such that a distance between the focal point and the projection lens is constant. The heat sink is positioned on the outside of the lamp outer casing.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: November 19, 2013
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Hiroki Shibata, Masashi Tatsukawa, Hitoshi Takeda, Kazutami Oishi
  • Publication number: 20120201039
    Abstract: A vehicle headlamp includes: a lamp outer casing; a lamp unit; a stationary frame; a movable frame that is supported by the stationary frame to be rotatable about a first rotating shaft extending in a lateral direction or a second rotating shaft extending in a vertical direction; a lens unit disposed in the lamp outer casing and supported by the movable frame; a first aiming operation shaft that adjusts an optical axis, and a second aiming operation shaft that adjusts the optical axis. A focal point of the light reflected by a reflector is coincident with a center of the first or second rotating shaft. The lens unit is rotated about the first or second rotating shaft such that a distance between the focal point and the projection lens is constant. The heat sink is positioned on the outside of the lamp outer casing.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 9, 2012
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroki SHIBATA, Masashi TATSUKAWA, Hiroshi OTAKA