Patents by Inventor Shinsuke Ito

Shinsuke Ito 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: 7018048
    Abstract: An exhaust sirocco fan exhausts the air inside the projector outside. An inlet of the exhaust sirocco fan is disposed along the plane orthogonal to the optical path plane formed by the optical unit, i.e. along the thickness direction of the projector. In other words, the optical unit or the exhaust sirocco fan need not be disposed in the thickness direction of the projector in an overlapping manner. Therefore, by efficiently sucking the inside air, the exhaust efficiency can be enhanced and calmness can be ensured in the projector.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: March 28, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Toshio Matsumiya
  • Patent number: 6976760
    Abstract: The invention provides a projector that is capable of efficiently cooling an outer case along with a light source device. The projector includes an outer case that accommodates a light source device and a cooling passage that is formed in the vicinity of the light source device to cool the outer case. Therefore, the inside of the outer case and the vicinity of the light source device are cooled by the cooling passage so as to cool the outer case efficiently. Also, since the cooling passage is arranged in the vicinity of the light source device, the light source device can also efficiently be cooled. As a result, a temperature rise in the light source device can be restrained so as to cool the outer case more efficiently.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: December 20, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Publication number: 20050117122
    Abstract: An exhaust sirocco fan exhausts the air inside the projector outside. An inlet of the exhaust sirocco fan is disposed along the plane orthogonal to the optical path plane formed by the optical unit, i.e. along the thickness direction of the projector. In other words, the optical unit or the exhaust sirocco fan need not be disposed in the thickness direction of the projector in an overlapping manner. Therefore, by efficiently sucking the inside air, the exhaust efficiency can be enhanced and calmness can be ensured in the projector.
    Type: Application
    Filed: July 8, 2003
    Publication date: June 2, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shinsuke Ito, Toshio Matsumiya
  • Patent number: 6866389
    Abstract: An optical device (44) has a holding frame (446) that holds a liquid crystal panel (441) as an optical modulator and has an opening (446C) at a part corresponding to an image formation area of the liquid crystal panel (441), and a panel fixing plate (447) disposed between the holding frame (446) and a cross dichroic prism (444). The panel fixing plate (447) is made of a component having a thermal expansion coefficient lying midway between the thermal expansion coefficients of the holding frame (446) and the cross dichroic prism (444). The liquid crystal panel (441) is fixed on a side of the cross dichroic prism (444) through the holding frame (446) and the panel fixing plate (447). Accordingly, a thermal stress generated on the boundaries between the panel fixing plate (447), and the holding frame (446) and the cross dichroic prism (444) are reduced, thereby preventing the position shift of the liquid crystal panel (441).
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: March 15, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Publication number: 20040262282
    Abstract: A heater comprising: a rod-shaped ceramic heater including: a ceramic heater body extending in an axial direction and having a heating element at its leading end portion for generating heat when energized; and first and second energizing lead terminals extending from said heating element and exposed to an outer circumference of a trailing end side of said ceramic heater body; a cylindrical outer cylinder for holding said ceramic heater while protruding a leading end portion and a trailing end portion of said ceramic heater; and a core rod arranged on said trailing end side of said ceramic heater in an axial direction and connected electrically with said first lead terminal, wherein said heater further comprises: a ring member including: a ring leading end portion fixed by a tight fitting on an outer circumference of a trailing end side of said ceramic heater and connected electrically with said first lead terminal; and a ring trailing end portion protruding backward from a trailing end of said ceramic heater;
    Type: Application
    Filed: April 7, 2004
    Publication date: December 30, 2004
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Takaya Yoshikawa, Hiroyuki Suzuki, Shinsuke Ito, Shinya Murakoshi
  • Publication number: 20040239897
    Abstract: A light source device (411) has a lamp body (411A) including a light source lamp, a reflector (417) and an anti-explosion glass (418), and a lamp housing (411B) for accommodating the lamp body (411A). A plurality of projections (411B8) protruding along an optical axis of a light beam irradiated by the light source lamp are formed on the lamp housing (411B). Further, the reflector (417) has an approximately concave cross section and a positioning surface (417C) that touches the projections (411B8) of the lamp housing (411B) to locate the lamp body (411A) relative to the lamp housing (411B) is provided on a distal side of the concave section. The positioning surface (417C) is continuously flush.
    Type: Application
    Filed: January 20, 2004
    Publication date: December 2, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yasunori Ogawa, Shinsuke Ito
  • Publication number: 20040218151
    Abstract: An exhaust sirocco fan exhausts the air inside the projector outside. An inlet of the exhaust sirocco fan is disposed along the plane orthogonal to the optical path plane formed by the optical unit, i.e. along the thickness direction of the projector. In other words, the optical unit or the exhaust sirocco fan need not be disposed in the thickness direction of the projector in an overlapping manner. Therefore, by efficiently sucking the inside air, the exhaust efficiency can be enhanced and calmness can be ensured in the projector.
    Type: Application
    Filed: January 20, 2004
    Publication date: November 4, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shinsuke Ito, Toshio Matsumiya
  • Publication number: 20040165152
    Abstract: An optical device (44) has a holding frame (446) that holds a liquid crystal panel (441) as an optical modulator and has an opening (446C) at a part corresponding to an image formation area of the liquid crystal panel (441), and a panel fixing plate (447) disposed between the holding frame (446) and a cross dichroic prism (444). The panel fixing plate (447) is made of a component having a thermal expansion coefficient lying midway between the thermal expansion coefficients of the holding frame (446) and the cross dichroic prism (444). The liquid crystal panel (441) is fixed on a side of the cross dichroic prism (444) through the holding frame (446) and the panel fixing plate (447). Accordingly, a thermal stress generated on the boundaries between the panel fixing plate (447), and the holding frame (446) and the cross dichroic prism (444) are reduced, thereby preventing the position shift of the liquid crystal panel (441).
    Type: Application
    Filed: October 10, 2003
    Publication date: August 26, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Patent number: 6561650
    Abstract: The invention provides a polarization-converting unit capable of being sufficiently cooled even when polarization-converting elements and a lens array are unitized together. Polarization-converting elements and a second lens array are held by a holding frame and a flow-inlet-side opening is arranged under the holding frame, and a flow-outlet-side opening is arranged over the holding frame so as to form a polarization-converting unit. Therefore, cooling air can be allowed to vertically flow through a clearance between the polarization-converting elements and the second lens array, thereby sufficiently cooling the polarization-converting elements and the second lens array from the faces thereof opposing each other. Therefore, in particular, the thermal effect to phase-difference plates pasted to the opposing faces of the polarization-converting elements can be reduced, and thereby the phase-difference plates are prevented from being peeled off so as to maintain the sufficient image quality.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: May 13, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Patent number: 6558004
    Abstract: The invention provides a projector capable of cooling a light-source lamp efficiently and suppressing noises as well. In a first cooling system, the base side of a light-source lamp, which reaches a high temperature, is intensively cooled by a first sirocco fan. An axial-flow exhaust fan is provided close to the light-source lamp so that cooling air is allowed to quickly flow while cooling the light-source lamp. Therefore, even when the first sirocco fan, in which the air pressure of cooling air is liable to be reduced, is used, heat generated in the light-source lamp can be smoothly radiated, thereby efficiently cooling the light-source lamp. Since the first sirocco fan is remarkably quiet as compared to an axial-flow fan, noises are suppressed to a low level.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: May 6, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Patent number: 6540364
    Abstract: The invention provides a projector capable of reducing costs and promoting miniaturization while also being dust-proof. A second sirocco fan with an air-inlet opposing a projection lens is used, and an air-inlet of an outer case is formed on a side face thereof. Thereby, it is difficult for dust to be sucked therein compared with an air-inlet formed on the bottom or top face of the outer case, enabling the projector to be dust-proof without any filter. Since the filter is not required, the number of parts is reduced, thereby reducing costs. Furthermore, the second sirocco fan is placed by utilizing a space under the projection lens, which is liable to be a dead space, enabling the arrangement space to be efficiently used thereby promoting miniaturization of a projector.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: April 1, 2003
    Assignee: Seiko Epson Corporation
    Inventors: Takeshi Takizawa, Shinsuke Ito
  • Patent number: 6434336
    Abstract: A data-imprinting apparatus for preventing the imprinting of incorrect dates in a lens-equipped film unit that lacks a monitor display unit for the confirmation of the date display. The lens-equipped film unit 1 contains a built-in data module 27 that lacks an external display unit that allows the confirmation of the date display from the outside. The data module 27 contains a transmission-type liquid crystal display unit 45 that automatically updates and displays dates based upon a pre-stored calendar. In the liquid crystal display unit 45, external light enters from the light collection window 15 on the front cover 12, thus creating a beam of data light. The data light, acting in concert with the shutter release operation, is guided into a dark box. The image-forming optical system that is provided in the dark box forms an image of the data light on a part of the photographic film.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: August 13, 2002
    Assignees: Seiko Epson Corporation, Fuji Photo Film Co., Ltd.
    Inventors: Masaaki Handa, Shinsuke Ito, Hisashi Tasaka, Yukitsugu Hata
  • Publication number: 20020071061
    Abstract: The invention provides a projector that is capable of efficiently cooling an outer case along with a light source device. The projector includes an outer case that accommodates a light source device and a cooling passage that is formed in the vicinity of the light source device to cool the outer case. Therefore, the inside of the outer case and the vicinity of the light source device are cooled by the cooling passage so as to cool the outer case efficiently. Also, since the cooling passage is arranged in the vicinity of the light source device, the light source device can also efficiently be cooled. As a result, a temperature rise in the light source device can be restrained so as to cool the outer case more efficiently.
    Type: Application
    Filed: December 4, 2001
    Publication date: June 13, 2002
    Applicant: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Publication number: 20020027643
    Abstract: The invention provides a projector capable of reducing costs and promoting miniaturization while also being dust-proof. A second sirocco fan with an air-inlet opposing a projection lens is used, and an air-inlet of an outer case is formed on a side face thereof. Thereby, it is difficult for dust to be sucked therein compared with an air-inlet formed on the bottom or top face of the outer case, enabling the projector to be dust-proof without any filter. Since the filter is not required, the number of parts is reduced, thereby reducing costs. Furthermore, the second sirocco fan is placed by utilizing a space under the projection lens, which is liable to be a dead space, enabling the arrangement space to be efficiently used thereby promoting miniaturization of a projector.
    Type: Application
    Filed: June 12, 2001
    Publication date: March 7, 2002
    Applicant: SEIKO EPSON CORPORATION.
    Inventors: Takeshi Takizawa, Shinsuke Ito
  • Publication number: 20020018183
    Abstract: The invention provides a polarization-converting unit capable of being sufficiently cooled even when polarization-converting elements and a lens array are unitized together. Polarization-converting elements and a second lens array are held by a holding frame and a flow-inlet-side opening is arranged under the holding frame, and a flow-outlet-side opening is arranged over the holding frame so as to form a polarization-converting unit. Therefore, cooling air can be allowed to vertically flow through a clearance between the polarization-converting elements and the second lens array, thereby sufficiently cooling the polarization-converting elements and the second lens array from the faces thereof opposing each other. Therefore, in particular, the thermal effect to phase-difference plates pasted to the opposing faces of the polarization-converting elements can be reduced, and thereby the phase-difference plates are prevented from being peeled off so as to maintain the sufficient image quality.
    Type: Application
    Filed: July 6, 2001
    Publication date: February 14, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Publication number: 20020015138
    Abstract: The invention provides a projector capable of cooling a light-source lamp efficiently and suppressing noises as well. In a first cooling system, the base side of a light-source lamp, which reaches a high temperature, is intensively cooled by a first sirocco fan. An axial-flow exhaust fan is provided close to the light-source lamp so that cooling air is allowed to quickly flow while cooling the light-source lamp. Therefore, even when the first sirocco fan, in which the air pressure of cooling air is liable to be reduced, is used, heat generated in the light-source lamp can be smoothly radiated, thereby efficiently cooling the light-source lamp. Since the first sirocco fan is remarkably quiet as compared to an axial-flow fan, noises are suppressed to a low level.
    Type: Application
    Filed: July 6, 2001
    Publication date: February 7, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shinsuke Ito, Takeshi Takizawa
  • Patent number: 6324342
    Abstract: A data-projection device particularly suited for disposable cameras that offers high reliability without the need for a dedicated monitoring device affixed thereto. A dedicated battery is embedded in this data-projection device and an associated battery terminal extends over the entire surface of the data-projection device. One of the circuit board surfaces securing the electrical components of the data-projection device is covered with an anti-electrostatic copper foil pattern which is connected to the battery, thus providing a shield effect with the battery terminal and the copper foil pattern strobe. Further, preferably, the strobe unit and the data-projection device are separated from each other by at least 2 mm.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: November 27, 2001
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Masaaki Handa
  • Publication number: 20010004419
    Abstract: A data-imprinting apparatus for preventing the imprinting of incorrect dates in a lens-equipped film unit that lacks a monitor display unit for the confirmation of the date display. The lens-equipped film unit 1 contains a built-in data module 27 that lacks an external display unit that allows the confirmation of the date display from the outside. The data module 27 contains a transmission-type liquid crystal display unit 45 that automatically updates and displays dates based upon a pre-stored calendar. In the liquid crystal display unit 45, external light enters from the light collection window 15 on the front cover 12, thus creating a beam of data light. The data light, acting in concert with the shutter release operation, is guided into a dark box. The image-forming optical system that is provided in the dark box forms an image of the data light on a part of the photographic film.
    Type: Application
    Filed: February 8, 2001
    Publication date: June 21, 2001
    Inventors: Masaaki Handa, Shinsuke Ito, Hisashi Tasaka, Yukitsugu Hata
  • Patent number: 6195507
    Abstract: A data-projection device particularly suited for disposable cameras that offers high reliability without the need for a dedicated monitoring device affixed thereto. A dedicated battery is embedded in this data-projection device and an associated battery terminal extends over the entire surface of the data-projection device. One of the circuit board surfaces securing the electrical components of the data-projection device is covered with an anti-electrostatic copper foil pattern which is connected to the battery, thus providing a shield effect with the battery terminal and the copper foil pattern strobe. Further, preferably, the strobe unit and the data-projection device are separated from each other by at least 2 mm.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: February 27, 2001
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Masaaki Handa
  • Patent number: 6038407
    Abstract: A data recording device 10 for a camera 1 uses a collecting plate 11 formed of a light transmitting resin with a fluorescent substance dispersed therein as a collecting element for collecting external light. The collecting plate 11 includes a vertically elongated flat light receiving portion 21 and a flat light emitting portion 22 protruding at a right angle from the back side of the light receiving portion, the end portion of the light emitting portion 22 constituting a light emitting surface 22a. External light incident on a surface 21a of the light receiving portion 21 enters the light receiving portion and is absorbed by the fluorescent substance, which generates fluorescence. The fluorescence is propagated through the collecting plate as it is reflected by the interface between the ambient air and the collecting plate before it is applied to a liquid crystal panel 12 for data recording from the light emitting surface 22a of the light emitting portion 22.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: March 14, 2000
    Assignee: Seiko Epson Corporation
    Inventors: Shinsuke Ito, Hiroaki Shinha, Hitoshi Hasegawa