Patents by Inventor Takeshi Utagawa
Takeshi Utagawa 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: 8879007Abstract: A projector includes: a display device which modulates illumination light; a projection lens which projects modulation light produced by the display device; and a holding device which has a holder member supporting the display device, a frame member supporting the projection lens and functions as a base capable of supporting the holder member, and an expanding and contracting member disposed between the frame member and the display device, wherein a temperature coefficient for the expansion and contraction of the expanding and contracting member in the direction of the optical axis of the projection lens corresponds to a temperature coefficient for the increase and decrease of the focal distance of the projection lens.Type: GrantFiled: July 22, 2013Date of Patent: November 4, 2014Assignee: Seiko Epson CorporationInventors: Daisuke Hayashi, Kunihisa Nakamura, Takeshi Utagawa
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Publication number: 20130300951Abstract: A projector includes: a display device which modulates illumination light; a projection lens which projects modulation light produced by the display device; and a holding device which has a holder member supporting the display device, a frame member supporting the projection lens and functions as a base capable of supporting the holder member, and an expanding and contracting member disposed between the frame member and the display device, wherein a temperature coefficient for the expansion and contraction of the expanding and contracting member in the direction of the optical axis of the projection lens corresponds to a temperature coefficient for the increase and decrease of the focal distance of the projection lens.Type: ApplicationFiled: July 22, 2013Publication date: November 14, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Daisuke HAYASHI, Kunihisa NAKAMURA, Takeshi UTAGAWA
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Patent number: 8537288Abstract: A projector includes: a display device which modulates illumination light; a projection lens which projects modulation light produced by the display device; and a holding device which has a holder member supporting the display device, a frame member supporting the projection lens and functions as a base capable of supporting the holder member, and an expanding and contracting member disposed between the frame member and the display device, wherein a temperature coefficient for the expansion and contraction of the expanding and contracting member in the direction of the optical axis of the projection lens corresponds to a temperature coefficient for the increase and decrease of the focal distance of the projection lens.Type: GrantFiled: April 19, 2010Date of Patent: September 17, 2013Assignee: Seiko Epson CorporationInventors: Daisuke Hayashi, Kunihisa Nakamura, Takeshi Utagawa
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Patent number: 7922332Abstract: A compensation element adjustment mechanism used with a light modulation device and a polarization plate includes: an optical compensation element disposed between the light modulation device and a polarization plate; a frame for supporting the optical compensation element, and having a pair of shaft members disposed at positions opposed to each other on a periphery of the optical compensation element; a support holder to be fixed with respect to the light modulation device, and for rotatably supporting the pair of shaft members; and a fixing section for restricting a displacement of the frame to the support holder by an elastic contact.Type: GrantFiled: August 6, 2008Date of Patent: April 12, 2011Assignee: Seiko Epson CorporationInventor: Takeshi Utagawa
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Publication number: 20100265419Abstract: A projector includes: a display device which modulates illumination light; a projection lens which projects modulation light produced by the display device; and a holding device which has a holder member supporting the display device, a frame member supporting the projection lens and functions as a base capable of supporting the holder member, and an expanding and contracting member disposed between the frame member and the display device, wherein a temperature coefficient for the expansion and contraction of the expanding and contracting member in the direction of the optical axis of the projection lens corresponds to a temperature coefficient for the increase and decrease of the focal distance of the projection lens.Type: ApplicationFiled: April 19, 2010Publication date: October 21, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Daisuke HAYASHI, Kunihisa Nakamura, Takeshi Utagawa
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Patent number: 7631973Abstract: A projector includes an image projection device, an exterior chassis accommodating the substantially L-shaped image projection device, and a ventilation device configured to block leakage light and to insulate sound of the projector and to discharge air inside the exterior chassis to the outside through an air outlet formed on an end face located in a direction of projection. The image projection device includes a light source device, an optical modulation device, and a projection optical device. The ventilation device includes an axial fan with a suction port and a discharge port. An air outlet duct bends air discharged from the discharge port at an angle of substantially ninety degrees by a vertical wall substantially perpendicular to the discharging direction of air from the discharge port of the axial fan towards a side receding from the projection optical device to lead to the air outlet of the exterior chassis.Type: GrantFiled: August 8, 2006Date of Patent: December 15, 2009Assignee: Seiko Epson CorporationInventors: Toshio Matsumiya, Takeshi Utagawa
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Publication number: 20090040464Abstract: A compensation element adjustment mechanism used with a light modulation device and a polarization plate includes: an optical compensation element disposed between the light modulation device and a polarization plate; a frame for supporting the optical compensation element, and having a pair of shaft members disposed at positions opposed to each other on a periphery of the optical compensation element; a support holder to be fixed with respect to the light modulation device, and for rotatably supporting the pair of shaft members; and a fixing section for restricting a displacement of the frame to the support holder by an elastic contact.Type: ApplicationFiled: August 6, 2008Publication date: February 12, 2009Applicant: Seiko Epson CorporationInventor: Takeshi Utagawa
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Publication number: 20070046900Abstract: A projector includes an image projection device including a light source device, a optical modulation device that modulates a light beam emitted from the light source device in accordance with image information, and an projection optical device that projects enlarged projection of the light beam modulated by the optical modulation device disposed in a substantially L-shape sequentially from one end to the other end, an exterior chassis accommodating the image projection device, and provided with an air outlet for discharging inside air to the outside formed on an end face of the projection optical device, the end face being located in a direction of projection, and a ventilation device that discharges air inside the exterior chassis to the outside and includes an axial fan provided with a suction port for sucking air and a discharge port for discharging the sucked air, and disposed in an area inside the exterior chassis and surrounded by the substantially L-shape of the image projection device and adjacent toType: ApplicationFiled: August 8, 2006Publication date: March 1, 2007Applicant: Seiko Epson CorporationInventors: Toshio Matsumiya, Takeshi Utagawa
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Patent number: D558252Type: GrantFiled: November 9, 2005Date of Patent: December 25, 2007Assignee: Seiko Epson CorporationInventors: Toshio Matsumiya, Takeshi Utagawa, Osamu Fujimaki