Patents by Inventor Daisuke Uchikawa
Daisuke Uchikawa 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).
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Patent number: 9262994Abstract: An information terminal includes: a display section that displays an image; a light source that emits light; an optical signal generator that uses the light emitted from the light source to generate an optical signal with which an optical scanner scans an object; a drive signal generator that generates a drive signal for driving the optical scanner; and a switcher that switches the state of the information terminal between a first state in which the display section displays an image, the optical signal generator does not generate the optical signal, and the drive signal generator does not generate the drive signal and a second state in which the optical signal generator generates the optical signal, the drive signal generator generates the drive signal, and the display section displays no image.Type: GrantFiled: August 12, 2013Date of Patent: February 16, 2016Assignee: Seiko Epson CorporationInventors: Yasushi Mizoguchi, Shuichi Wakabayashi, Daisuke Uchikawa
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Publication number: 20140049569Abstract: An information terminal includes: a display section that displays an image; a light source that emits light; an optical signal generator that uses the light emitted from the light source to generate an optical signal with which an optical scanner scans an object; a drive signal generator that generates a drive signal for driving the optical scanner; and a switcher that switches the state of the information terminal between a first state in which the display section displays an image, the optical signal generator does not generate the optical signal, and the drive signal generator does not generate the drive signal and a second state in which the optical signal generator generates the optical signal, the drive signal generator generates the drive signal, and the display section displays no image.Type: ApplicationFiled: August 12, 2013Publication date: February 20, 2014Applicant: Seiko Epson CorporationInventors: Yasushi Mizoguchi, Shuichi Wakabayashi, Daisuke Uchikawa
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Patent number: 8599459Abstract: An image display apparatus that displays an image by scanning of coherent light includes: a light source portion that emits the coherent light; a scanning portion that scans the coherent light; a concave reflection portion having a concave surface from which the coherent light is reflected; and an incident position changing unit that changes an incident position of the coherent light onto the concave surface in a curvature direction of the concave surface.Type: GrantFiled: October 29, 2011Date of Patent: December 3, 2013Assignee: Seiko Epson CorporationInventor: Daisuke Uchikawa
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Patent number: 8208188Abstract: An image display apparatus that displays an image by scanning of coherent light includes: a light source portion that emits the coherent light; a scanning portion that scans the coherent light; a concave reflection portion having a concave surface from which the coherent light is reflected; and an incident position changing unit that changes an incident position of the coherent light onto the concave surface in a curvature direction of the concave surface.Type: GrantFiled: March 18, 2009Date of Patent: June 26, 2012Assignee: Seiko Epson CorporationInventor: Daisuke Uchikawa
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Patent number: 8197071Abstract: A light source device includes: a light source section adapted to emit a light beam; a first optical element provided with a first entrance surface to which the light beam emitted from the light source section is input, and adapted to transmit the light beam; and a second optical element provided with a second entrance surface to which the light beam transmitted through the first optical element is input, and adapted to transmit the light beam, wherein the first entrance surface is tilted towards a direction rotated around a primary axis with respect to a principal ray of the light beam input to the first entrance surface, and the second entrance surface is tilted towards a direction rotated around a secondary axis substantially perpendicular to the primary axis with respect to the principal ray of the light beam input to the second entrance surface.Type: GrantFiled: June 18, 2009Date of Patent: June 12, 2012Assignee: Seiko Epson CorporationInventor: Daisuke Uchikawa
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Patent number: 8192029Abstract: An image display device includes: a laser light source having a plurality of emitting sections arrayed in a predetermined direction; and a light modulation device that includes an illumination region extending in a longitudinal direction and a lateral direction, and that modulates the laser lights emitted from the laser light source in accordance with an image signal. In the image display device, the predetermined direction in which the emitting sections are arrayed coincides with the longitudinal direction of the illumination region of the light modulation device.Type: GrantFiled: August 27, 2007Date of Patent: June 5, 2012Assignee: Seiko Epson CorporationInventors: Takashi Takeda, Daisuke Uchikawa
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Patent number: 8157387Abstract: A projector that includes a laser beam source that outputs a laser beam that is modulated based on an image signal and a screen on which the light beam is projected. The projector also includes a scanning unit that scans the laser beam within a predetermined surface and a scan monitoring unit that monitors scanning of the scanning unit and outputs a result of the monitoring. The projector further includes a beam light supply stopping unit that controls the laser beam source so as to stop output of the laser beam based on the result of monitoring output by the scan monitoring unit.Type: GrantFiled: June 4, 2008Date of Patent: April 17, 2012Assignee: Seiko Epson CorporationInventors: Masatoshi Yonekubo, Daisuke Uchikawa, Shunji Kamijima, Takashi Takeda
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Publication number: 20120039347Abstract: An image display apparatus that displays an image by scanning of coherent light includes: a light source portion that emits the coherent light; a scanning portion that scans the coherent light; a concave reflection portion having a concave surface from which the coherent light is reflected; and an incident position changing unit that changes an incident position of the coherent light onto the concave surface in a curvature direction of the concave surface.Type: ApplicationFiled: October 29, 2011Publication date: February 16, 2012Applicant: Seiko Epson CorporationInventor: Daisuke UCHIKAWA
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Patent number: 8040332Abstract: A light scan device which forces a beam light depending on an image signal to scan, including: a light source part for supplying the beam light; and a scanning part for forcing the beam light from the light source part to scan an illumination-target region in a first direction and a second direction substantially orthogonal to the first direction, wherein the scanning part is driven so that a frequency with which the beam light is forced to scan in the first direction is higher than a frequency with which the beam light is forced to scan in the second direction, and a spot formed on the illumination-target region by the beam light has a form with a shorter size in the first direction than in the second direction.Type: GrantFiled: August 9, 2006Date of Patent: October 18, 2011Assignee: Seiko Epson CorporationInventors: Tetsuro Yamazaki, Takashi Takeda, Daisuke Uchikawa, Yasunaga Miyazawa
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Publication number: 20110186143Abstract: A fluid transporter which presses a tube made of elastic material by using a pressing member to close at least one position of the tube, and shifts the closed position to transport fluid within the tube, includes: a main body case on which a driving unit for driving the pressing member to shift the closed position is provided; and an attachment case which is so constructed as to be attachable to and detachable from the main body case and has a flow path through which the fluid to be transported passes, wherein the portion of the flow path pressed by the pressing member is formed by the tube, and the remaining portion of the flow path is formed integrally with the attachment case.Type: ApplicationFiled: January 27, 2011Publication date: August 4, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Hajime MIYAZAKI, Daisuke UCHIKAWA
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Patent number: 7948667Abstract: An optical scanning element includes: a movable member which has a reflection surface for reflecting light and rotatable around a rotation axis; and a transmitting member which has a first surface on the side opposite to the side facing the movable member and a second surface on the side facing the movable member, and transmits light entering the first surface and light entering the second surface from the reflection surface. The first surface is not parallel with the reflection surface when the movable member is in a neutral condition.Type: GrantFiled: August 26, 2008Date of Patent: May 24, 2011Assignee: Seiko Epson CorporationInventor: Daisuke Uchikawa
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Publication number: 20100265559Abstract: An electro-optic element includes an electro-optic crystal having a birefringent property, and in which a refractive index distribution is generated in accordance with an intensity of an electric field caused inside, a pair of intensity modulating electrodes for applying a voltage for varying the birefringent property of the electro-optic crystal, a pair of scanning electrodes for applying a voltage for varying the refractive index distribution of the electro-optic crystal, and a polarization selection member provided at least on a side of a laser beam emission end face out of a laser beam entrance end face and the laser beam emission end face of the electro-optic crystal, and for selectively transmitting a part with a specific vibration direction out of a light beam emitted from the electro-optic crystal.Type: ApplicationFiled: June 28, 2010Publication date: October 21, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Daisuke UCHIKAWA, Shigeo NOJIMA
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Patent number: 7817325Abstract: An electro-optic element includes an electro-optic crystal having a birefringent property, and in which a refractive index distribution is generated in accordance with an intensity of an electric field caused inside, a pair of intensity modulating electrodes for applying a voltage for varying the birefringent property of the electro-optic crystal, a pair of scanning electrodes for applying a voltage for varying the refractive index distribution of the electro-optic crystal, and a polarization selection member provided at least on a side of a laser beam emission end face out of a laser beam entrance end face and the laser beam emission end face of the electro-optic crystal, and for selectively transmitting a part with a specific vibration direction out of a light beam emitted from the electro-optic crystal.Type: GrantFiled: June 28, 2010Date of Patent: October 19, 2010Assignee: Seiko Epson CorporationInventors: Daisuke Uchikawa, Shigeo Nojima
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Patent number: 7777931Abstract: An electro-optic element includes an electro-optic crystal having a birefringent property, and in which a refractive index distribution is generated in accordance with an intensity of an electric field caused inside, a pair of intensity modulating electrodes for applying a voltage for varying the birefringent property of the electro-optic crystal, a pair of scanning electrodes for applying a voltage for varying the refractive index distribution of the electro-optic crystal, and a polarization selection member provided at least on a side of a laser beam emission end face out of a laser beam entrance end face and the laser beam emission end face of the electro-optic crystal, and for selectively transmitting a part with a specific vibration direction out of a light beam emitted from the electro-optic crystal.Type: GrantFiled: February 25, 2008Date of Patent: August 17, 2010Assignee: Seiko Epson CorporationInventors: Daisuke Uchikawa, Shigeo Nojima
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Publication number: 20090323027Abstract: A light source device includes: a light source section adapted to emit a light beam; a first optical element provided with a first entrance surface to which the light beam emitted from the light source section is input, and adapted to transmit the light beam; and a second optical element provided with a second entrance surface to which the light beam transmitted through the first optical element is input, and adapted to transmit the light beam, wherein the first entrance surface is tilted towards a direction rotated around a primary axis with respect to a principal ray of the light beam input to the first entrance surface, and the second entrance surface is tilted towards a direction rotated around a secondary axis substantially perpendicular to the primary axis with respect to the principal ray of the light beam input to the second entrance surface.Type: ApplicationFiled: June 18, 2009Publication date: December 31, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Daisuke UCHIKAWA
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Publication number: 20090244669Abstract: An image display apparatus that displays an image by scanning of coherent light includes: a light source portion that emits the coherent light; a scanning portion that scans the coherent light; a concave reflection portion having a concave surface from which the coherent light is reflected; and an incident position changing unit that changes an incident position of the coherent light onto the concave surface in a curvature direction of the concave surface.Type: ApplicationFiled: March 18, 2009Publication date: October 1, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Daisuke UCHIKAWA
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Publication number: 20090122545Abstract: A light source device whose emitted light is collimated using a collimating system includes a light source unit, and an opening member disposed on the optical path of light emitted from the light source unit to allow a part of the light emitted from the light source unit to pass through the opening member through an opening and block light other than the light entering the opening.Type: ApplicationFiled: November 6, 2008Publication date: May 14, 2009Applicant: Seiko Epson CorporationInventor: Daisuke UCHIKAWA
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Publication number: 20090073526Abstract: An optical scanning element includes: a movable member which has a reflection surface for reflecting light and rotatable around a rotation axis; and a transmitting member which has a first surface on the side opposite to the side facing the movable member and a second surface on the side facing the movable member, and transmits light entering the first surface and light entering the second surface from the reflection surface. The first surface is not parallel with the reflection surface when the movable member is in a neutral condition.Type: ApplicationFiled: August 26, 2008Publication date: March 19, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Daisuke UCHIKAWA
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Publication number: 20090033884Abstract: A projector that includes a laser beam source that outputs a laser beam that is modulated based on an image signal and a screen on which the light beam is projected. The projector also includes a scanning unit that scans the laser beam within a predetermined surface and a scan monitoring unit that monitors scanning of the scanning unit and outputs a result of the monitoring. The projector further includes a beam light supply stopping unit that controls the laser beam source so as to stop output of the laser beam based on the result of monitoring output by the scan monitoring unit.Type: ApplicationFiled: June 4, 2008Publication date: February 5, 2009Applicant: Seiko Epson CorporationInventors: Masatoshi Yonekubo, Daisuke Uchikawa, Shunji Kamijima, Takashi Takeda
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Patent number: 7471446Abstract: A scan-type optical apparatus includes a light source device that emits a laser beam, an electro-optic element that conducts scan of the laser beam emitted from the light source device by varying refractive index distribution in accordance with the level of voltage to be applied, and a light blocking member disposed on an optical path of the laser beam emitted from the electro-optic element when no voltage is applied to the electro-optic element.Type: GrantFiled: July 9, 2007Date of Patent: December 30, 2008Assignee: Seiko Epson CorporationInventors: Daisuke Uchikawa, Shigeo Nojima