Patents by Inventor Naoyuki Ogura
Naoyuki Ogura 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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Publication number: 20230118416Abstract: An information display device that displays image information as a virtual image on a projection surface, the device including: an opening portion at a part of the housing, image light generating means for generating image light, image light processing means for performing a predetermined optical process on the image light, and image projecting means for projecting the image light such that a viewer can recognize the image information as the virtual image in front of the projection surface, and an optical element in which a reflective polarizing plate is fixed to a substrate having a transmissive property with an adhesive agent or with a pressure-sensitive adhesive agent is provided in a part of an optical path inside the housing, as means for selectively reflecting a P-polarized light component of light in a visible light region, and a moisture-proof film is provided on a surface of the reflective polarizing plate.Type: ApplicationFiled: March 24, 2021Publication date: April 20, 2023Applicant: MAXELL, LTD.Inventors: Koji HIRATA, Masahiko YATSU, Toshinori SUGIYAMA, Tomoki YAMAMOTO, Toshimasa NAGAI, Chohei ONO, Hiroyuki KAJIKAWA, Naoyuki OGURA
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Patent number: 9429832Abstract: A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.Type: GrantFiled: January 30, 2014Date of Patent: August 30, 2016Assignee: HITACHI MAXELL, LTD.Inventors: Koji Hirata, Masahiko Yatsu, Naoyuki Ogura
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Publication number: 20140146294Abstract: A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.Type: ApplicationFiled: January 30, 2014Publication date: May 29, 2014Applicant: HITACHI CONSUMER ELECTRONICS CO., LTD.Inventors: Koji HIRATA, Masahiko YATSU, Naoyuki OGURA
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Patent number: 8690349Abstract: A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.Type: GrantFiled: April 10, 2013Date of Patent: April 8, 2014Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Koji Hirata, Masahiko Yatsu, Naoyuki Ogura
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Patent number: 8690345Abstract: There is provided a projection image display apparatus which is excellent in quality of a display screen image even if a projection lens using a plastic lens having an asymmetrical shape with respect to an optical axis is used. The apparatus includes a projection lens which obliquely projects video light on a screen, an integrator which aligns a polarization direction of light from a light source, and an image display element (P, PL) which modulates light having the aligned polarization direction by an image signal. The projection lens includes multiple plastic lenses, and each of the multiple plastic lenses is arrayed, respectively, by shifting a gate direction to each other by 180 degrees. When the projection lens includes n sheets (n is a natural number) of plastic lenses, each of the multiple plastic lenses may be arrayed, respectively, by shifting a gate direction to each other by (360/n) degrees.Type: GrantFiled: October 3, 2011Date of Patent: April 8, 2014Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Koji Hirata, Masahiko Yatsu, Naoyuki Ogura, Hidehiro Ikeda
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Patent number: 8585216Abstract: An object of the invention is to reduce the size and weight of a video projector by shortening the length of the arm of a mirror rotator and reducing the size of a mirror. A video projector comprises a plurality of projection lenses through which image light rays from a liquid crystal panel are extracted in a magnified manner; a reflective mirror for reflecting the extracted image light rays onto a screen; and a mirror rotator for rotating the reflective mirror so that the extracted image light rays can be reflected in particular directions. Among the projection lenses, some of the projection lenses located farther away from the liquid crystal penal are partially cut such that areas through which the image light rays do not pass are cut off to create a lens cut-off space. The mirror rotator is placed in the lens cut-off space.Type: GrantFiled: June 3, 2010Date of Patent: November 19, 2013Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Chohei Ono, Naoyuki Ogura, Koji Hirata, Masahiko Yatsu, Masayuki Fukui, Megumi Kurachi
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Publication number: 20130229633Abstract: A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.Type: ApplicationFiled: April 10, 2013Publication date: September 5, 2013Applicant: HITACHI CONSUMER ELECTRONICS CO., LTD.Inventors: Koji HIRATA, Masahiko YATSU, Naoyuki OGURA
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Patent number: 8425049Abstract: A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.Type: GrantFiled: December 14, 2009Date of Patent: April 23, 2013Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Koji Hirata, Masahiko Yatsu, Naoyuki Ogura
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Patent number: 8169708Abstract: A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.Type: GrantFiled: May 3, 2011Date of Patent: May 1, 2012Assignee: Hitachi, Ltd.Inventors: Hiroki Yoshikawa, Takanori Hisada, Tetsu Ohishi, Koji Hirata, Naoyuki Ogura
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Publication number: 20120081676Abstract: There is provided a projection image display apparatus which is excellent in quality of a display screen image even if a projection lens using a plastic lens having an asymmetrical shape with respect to an optical axis is used. The apparatus includes a projection lens which obliquely projects video light on a screen, an integrator which aligns a polarization direction of light from a light source, and an image display element (P, PL) which modulates light having the aligned polarization direction by an image signal. The projection lens includes multiple plastic lenses, and each of the multiple plastic lenses is arrayed, respectively, by shifting a gate direction to each other by 180 degrees. When the projection lens includes n sheets (n is a natural number) of plastic lenses, each of the multiple plastic lenses may be arrayed, respectively, by shifting a gate direction to each other by (360/n) degrees.Type: ApplicationFiled: October 3, 2011Publication date: April 5, 2012Inventors: Koji HIRATA, Masahiko Yatsu, Naoyuki Ogura, Hidehiro Ikeda
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Patent number: 8082360Abstract: An associative memory 4 for primary searching operation of an associative memory 23 supplies a valid state to a primary match line 13 corresponding to storage data coincident with search data 10 taking mask information into account, and supplies a value obtained from a result of a logical sum operation (an OR operation), with a valid state for the storage data as true, of all said coincident storage data to a counting means 25 as intermediate data 15. The counting means 25 supplies a result of an operation to the intermediate data 15 for counting the number of bits in an invalid state for the storage data to an associative memory 3 for secondary searching operations as secondary search data 19. Among secondary storage data obtained by carrying out said operation to said storage data, the associative memory 3 for secondary searching operation supplies a result of carrying out the searching operation of the secondary search data 19 to a secondary match line 21.Type: GrantFiled: July 15, 2010Date of Patent: December 20, 2011Assignee: Terminus Technology LimitedInventor: Naoyuki Ogura
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Publication number: 20110205499Abstract: A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.Type: ApplicationFiled: May 3, 2011Publication date: August 25, 2011Applicant: Hitachi, Ltd.Inventors: Hiroki YOSHIKAWA, Takanori HISADA, Tetsu OHISHI, Koji HIRATA, Naoyuki OGURA
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Patent number: 7961400Abstract: A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.Type: GrantFiled: August 5, 2009Date of Patent: June 14, 2011Assignee: Hitachi, Ltd.Inventors: Hiroki Yoshikawa, Takanori Hisada, Tetsu Ohishi, Koji Hirata, Naoyuki Ogura
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Publication number: 20110075115Abstract: An object of the invention is to reduce the size and weight of a video projector by shortening the length of the arm of a mirror rotator and reducing the size of a mirror. A video projector comprises a plurality of projection lenses through which image light rays from a liquid crystal panel are extracted in a magnified manner; a reflective mirror for reflecting the extracted image light rays onto a screen; and a mirror rotator for rotating the reflective mirror so that the extracted image light rays can be reflected in particular directions. Among the projection lenses, some of the projection lenses located farther away from the liquid crystal penal are partially cut such that areas through which the image light rays do not pass are cut off to create a lens cut-off space. The mirror rotator is placed in the lens cut-off space.Type: ApplicationFiled: June 3, 2010Publication date: March 31, 2011Applicant: Hitachi Consumer Electronics Co., Ltd.Inventors: Chohei Ono, Naoyuki Ogura, Koji Hirata, Masahiko Yatsu, Masayuki Fukui, Megumi Kurachi
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Publication number: 20110066755Abstract: An associative memory 4 for primary searching operation of an associative memory 23 supplies a valid state to a primary match line 13 corresponding to storage data coincident with search data 10 taking mask information into account, and supplies a value obtained from a result of a logical sum operation (an OR operation), with a valid state for the storage data as true, of all said coincident storage data to a counting means 25 as intermediate data 15. The counting means 25 supplies a result of an operation to the intermediate data 15 for counting the number of bits in an invalid state for the storage data to an associative memory 3 for secondary searching operations as secondary search data 19. Among secondary storage data obtained by carrying out said operation to said storage data, the associative memory 3 for secondary searching operation supplies a result of carrying out the searching operation of the secondary search data 19 to a secondary match line 21.Type: ApplicationFiled: July 15, 2010Publication date: March 17, 2011Inventor: Naoyuki Ogura
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Patent number: 7761599Abstract: An associative memory 4 for primary searching operation of an associative memory 23 supplies a valid state to a primary match line 13 corresponding to storage data coincident with search data 10 taking mask information into account, and supplies a value obtained from a result of a logical sum operation (an OR operation), with a valid state for the storage data as true, of all said coincident storage data to a counting means 25 as intermediate data 15. The counting means 25 supplies a result of an operation to the intermediate data 15 for counting the number of bits in an invalid state for the storage data to an associative memory 3 for secondary searching operations as secondary search data 19. Among secondary storage data obtained by carrying out said operation to said storage data, the associative memory 3 for secondary searching operation supplies a result of carrying out the searching operation of the secondary search data 19 to a secondary match line 21.Type: GrantFiled: October 17, 2007Date of Patent: July 20, 2010Assignee: Terminus Technology LimitedInventor: Naoyuki Ogura
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Publication number: 20100171937Abstract: A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen.Type: ApplicationFiled: December 14, 2009Publication date: July 8, 2010Inventors: Koji HIRATA, Masahiko Yatsu, Naoyuki Ogura
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Patent number: D639076Type: GrantFiled: December 2, 2010Date of Patent: June 7, 2011Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Masayuki Fukui, Masahiko Yatsu, Naoyuki Ogura, Koji Hirata, Masanori Tsumura
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Patent number: D645068Type: GrantFiled: December 2, 2010Date of Patent: September 13, 2011Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Masayuki Fukui, Masahiko Yatsu, Naoyuki Ogura, Koji Hirata, Masanori Tsumura
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Patent number: D647931Type: GrantFiled: December 2, 2010Date of Patent: November 1, 2011Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Masayuki Fukui, Masahiko Yatsu, Naoyuki Ogura, Koji Hirata, Masanori Tsumura