Patents by Inventor Kunitaka Furuichi
Kunitaka Furuichi 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: 10859895Abstract: A projector apparatus that can effectively reduce bending of a base plate supporting a lens shifting unit thereon and facilitates replacement of unit parts in the event of a failure is provided. The projector apparatus includes: a base plate attached inside a projector body; a lens supporting unit attached to the base plate and supporting a projection lens so as to be movable relative to the base plate; guiding mechanisms for guiding the lens supporting unit so as to be freely movable in a horizontal direction and a normal direction relative to the base plate; and fixing devices which fix the base plate to the projector body. The fixing devices include a plurality of first fixing devices provided at a peripheral edge of the base plate, and second fixing devices provided on an inner side of the plurality of first fixing devices.Type: GrantFiled: November 2, 2017Date of Patent: December 8, 2020Assignees: THK CO., LTD., NEC DISPLAY SOLUTIONS, LTD.Inventors: Marie Shimamura, Jun Hirota, Hajime Fukushima, Kunitaka Furuichi
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Publication number: 20190353991Abstract: A projector apparatus that can effectively reduce bending of a base plate supporting a lens shifting unit thereon and facilitates replacement of unit parts in the event of a failure is provided. The projector apparatus includes: a base plate attached inside a projector body; a lens supporting unit attached to the base plate and supporting a projection lens so as to be movable relative to the base plate; guiding mechanisms for guiding the lens supporting unit so as to be freely movable in a horizontal direction and a normal direction relative to the base plate; and fixing devices which fix the base plate to the projector body. The fixing devices include a plurality of first fixing devices provided at a peripheral edge of the base plate, and second fixing devices provided on an inner side of the plurality of first fixing devices.Type: ApplicationFiled: November 2, 2017Publication date: November 21, 2019Applicants: THK CO., LTD., NEC DISPLAY SOLUTIONS, LTD.Inventors: Marie Shimamura, Jun Hirota, Hajime Fukushima, Kunitaka Furuichi
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Patent number: 8845111Abstract: The lens shifting device includes: first plate through which video light passes; second plate connected to first plate via elastic member and having projection lens attached to a position into which the video light that passed through first plate enters; slider disposed to project from second plate and housed in first plate to be movable in a predetermined direction; and guide shaft attached to first plate in the state of being engaged with slider and rotated to move the second plate. Elastic member is disposed between first plate and second plate to connect first plate and second plate in the state of generating an elastic contraction force.Type: GrantFiled: March 2, 2010Date of Patent: September 30, 2014Assignee: NEC Display Solutions, Ltd.Inventors: Kunitaka Furuichi, Takayuki Okada
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Publication number: 20120293778Abstract: Provided is a lens shifting device that has a simple structure and a small number of components, is compact and lightweight, and has high positional accuracy and slidability. The lens shifting device includes: first plate (12) through which video light passes; second plate (13) connected to first plate (12) via elastic member (23) and having projection lens (6) attached to a position into which the video light that passed through first plate (12) enters; slider (27) disposed to project from second plate (13) and housed in first plate (12) to be movable in a predetermined direction; and guide shaft (14) attached to first plate (12) in the state of being engaged with slider (27) and rotated to move the second plate. Elastic member (23) is disposed between first plate (12) and second plate (13) to connect first plate (12) and second plate (13) in the state of generating an elastic contraction force.Type: ApplicationFiled: March 2, 2010Publication date: November 22, 2012Inventors: Kunitaka Furuichi, Takayuki Okada
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Publication number: 20120092630Abstract: A projection type display device that displays an image with projected light onto a target to he projected, including a first sensor (12) that detects reflected light of the projected light; a second sensor (13) that detects an infrared ray in a predetermined range in an optical path direction of the projected light; and a light amount deciding section (23) that decides an amount of the projected light based on the amount of reflected light detected by the first sensor (12) and an amount of change of the infrared ray detected by the second sensor (13).Type: ApplicationFiled: July 31, 2009Publication date: April 19, 2012Inventors: Kunitaka Furuichi, Takayuki Okada
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Patent number: 7341357Abstract: A projection display apparatus includes an image forming element, and an imaging optical system made up of a plurality of reflectors for projecting an image formed by the image forming element to provide an enlarged version of the image, wherein at least one of the reflectors which make up the imaging optical system is movable for adjusting the focus, and the movable reflector is movable along a straight line non-parallel with the normal line of the image forming element.Type: GrantFiled: November 8, 2006Date of Patent: March 11, 2008Assignee: NEC Viewtechnology, Ltd.Inventors: Kunitaka Furuichi, Masateru Matsubara
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Publication number: 20070206302Abstract: A projection display apparatus comprises an image forming element, and an imaging optical system made up of a plurality of reflectors for projecting an image formed by the image forming element to provide an enlarged version of the image, wherein at least one of the reflectors which make up the imaging optical system is movable for adjusting the focus, and the movable reflector is movable along a straight line non-parallel with the normal line of the image forming element.Type: ApplicationFiled: November 8, 2006Publication date: September 6, 2007Applicant: NEC VIEWTECHNOLOGY, LTD.Inventors: Kunitaka Furuichi, Masateru Matsubara
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Patent number: 7201484Abstract: A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.Type: GrantFiled: June 20, 2006Date of Patent: April 10, 2007Assignee: NEC Viewtechnology Ltd.Inventors: Hiroyuki Kobayashi, Kunitaka Furuichi
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Publication number: 20060232751Abstract: A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.Type: ApplicationFiled: June 20, 2006Publication date: October 19, 2006Applicant: NEC VIEWTECHNOLOGY, LTD.Inventors: Hiroyuki Kobayashi, Kunitaka Furuichi
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Patent number: 7108381Abstract: There is provided a projector apparatus having an image forming optical system including a plate fixed to a housing, and a plurality of reflecting mirrors attached to the plate through respective holding members. The material of the reflecting mirrors, and the materials of the plate and the holding members have approximately equal coefficients of linear expansion. Sliding means is provided at a contact point between the housing and the plate for releasing an excessive force generated at the contact point.Type: GrantFiled: January 31, 2006Date of Patent: September 19, 2006Assignee: NEC Viewtechnology, Ltd.Inventor: Kunitaka Furuichi
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Patent number: 7093943Abstract: A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.Type: GrantFiled: July 19, 2005Date of Patent: August 22, 2006Assignee: NEC Viewtechnology, Ltd.Inventors: Hiroyuki Kobayashi, Kunitaka Furuichi
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Publication number: 20060126035Abstract: There is provided a projector apparatus having an image forming optical system including a plate fixed to a housing, and a plurality of reflecting mirrors attached to the plate through respective holding members. The material of the reflecting mirrors, and the materials of the plate and the holding members have approximately equal coefficients of linear expansion. Sliding means is provided at a contact point between the housing and the plate for releasing an excessive force generated at the contact point.Type: ApplicationFiled: January 31, 2006Publication date: June 15, 2006Applicant: NEC VIEWTECHNOLOGY, LTD.Inventor: Kunitaka Furuichi
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Patent number: 7029131Abstract: There is provided a projector apparatus having an image forming optical system including a plate fixed to a housing, and a plurality of reflecting mirrors attached to the plate through respective holding members. The material of the reflecting mirrors, and the materials of the plate and the holding members have approximately equal coefficients of linear expansion. Sliding means is provided at a contact point between the housing and the plate for releasing an excessive force generated at the contact point.Type: GrantFiled: February 18, 2004Date of Patent: April 18, 2006Assignee: NEC Viewtechnology, Ltd.Inventor: Kunitaka Furuichi
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Publication number: 20050264769Abstract: A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.Type: ApplicationFiled: July 19, 2005Publication date: December 1, 2005Applicant: NEC VIEWTECHNOLOGY, LTD.Inventors: Hiroyuki Kobayashi, Kunitaka Furuichi
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Patent number: 6929370Abstract: A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.Type: GrantFiled: February 13, 2004Date of Patent: August 16, 2005Assignee: NEC Viewtechnology, Ltd.Inventors: Hiroyuki Kobayashi, Kunitaka Furuichi
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Patent number: 6877862Abstract: A reflecting mirror 4d has a rotation axis 7 which is inserted into a bearing 8 of a case 1. Accordingly, the reflecting mirror 4d is capable of rotating with respect to the case 1 and only the reflecting mirror 4d is capable of adjusting the set up angle ? made with the case 1. When the set up angle is changed, the reflecting angle of the projected ray on the reflecting mirror 4d is also changed. Therefore, the launching angle of the projected ray 5 with respect to the case 1 can be adjusted.Type: GrantFiled: March 19, 2003Date of Patent: April 12, 2005Assignee: NEC Viewtechnology, Ltd.Inventors: Hiroaki Fukunaga, Kunitaka Furuichi
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Publication number: 20040179172Abstract: A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.Type: ApplicationFiled: February 13, 2004Publication date: September 16, 2004Applicant: NEC VIEWTECHNOLOHY, LTDInventors: Hiroyuki Kobayashi, Kunitaka Furuichi
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Publication number: 20040169828Abstract: There is provided a projector apparatus having an image forming optical system including a plate fixed to a housing, and a plurality of reflecting mirrors attached to the plate through respective holding members. The material of the reflecting mirrors, and the materials of the plate and the holding members have approximately equal coefficients of linear expansion. Sliding means is provided at a contact point between the housing and the plate for releasing an excessive force generated at the contact point.Type: ApplicationFiled: February 18, 2004Publication date: September 2, 2004Applicant: NEC VIEWTECHNOLOGY, LTD.Inventor: Kunitaka Furuichi
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Publication number: 20030179349Abstract: A reflecting mirror 4d has a rotation axis 7 which is inserted into a bearing 8 of a case 1. Accordingly, the reflecting mirror 4d is capable of rotating with respect to the case 1 and only the reflecting mirror 4d is capable of adjusting the set up angle &agr; made with the case 1. When the set up angle is changed, the reflecting angle of the projected ray on the reflecting mirror 4d is also changed. Therefore, the launching angle of the projected ray 5 with respect to the case 1 can be adjusted.Type: ApplicationFiled: March 19, 2003Publication date: September 25, 2003Applicant: NEC VIEWTECHNOLOGY, Ltd.Inventors: Hiroaki Fukunaga, Kunitaka Furuichi
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Patent number: 6527397Abstract: All of optical elements constituting a projecting optical system 10 are reflection mirrors 1 to 4. The reflection mirrors 1 to 4 are arranged in a plate-shaped support member 6 with a relative positional relation between the reflection mirrors being fixed. A position of the whole projecting optical system 10 with respect to an image-forming component 5 is adjust by moving the support member 6.Type: GrantFiled: August 2, 2001Date of Patent: March 4, 2003Assignee: NEC Viewtechnology, Ltd.Inventors: Kunitaka Furuichi, Jun Ogawa