Patents by Inventor Shigehisa Hagura

Shigehisa Hagura 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: 7152978
    Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: December 26, 2006
    Assignee: Hitachi, Ltd., and Hitachi Video and Information Systems, Inc.
    Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
  • Publication number: 20050083490
    Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
    Type: Application
    Filed: October 26, 2004
    Publication date: April 21, 2005
    Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
  • Patent number: 6824273
    Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: November 30, 2004
    Assignees: Hitachi, Ltd., Hitachi Video Information System, Inc.
    Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
  • Patent number: 6783245
    Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: August 31, 2004
    Assignees: Hitachi Ltd., Hitachi Video and Information System, Inc.
    Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
  • Publication number: 20030206276
    Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
    Type: Application
    Filed: April 25, 2003
    Publication date: November 6, 2003
    Applicants: Hitachi, Ltd., Hitachi Video and Information System, Inc.
    Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, MIkiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
  • Patent number: 6290360
    Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: September 18, 2001
    Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.
    Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
  • Publication number: 20010008439
    Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
    Type: Application
    Filed: February 26, 2001
    Publication date: July 19, 2001
    Applicant: Hitachi, Ltd.
    Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
  • Patent number: D677703
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 12, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Kazuhiko Hiraoka, Shigehisa Hagura, Tomoyuki Miyata, Toshiaki Nishida, Kazunori Komatsu, Hiroki Tanaka, Hiroyuki Isobe, Masao Nakamura
  • Patent number: D678354
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 19, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Kazuhiko Hiraoka, Shigehisa Hagura, Tomoyuki Miyata, Toshiaki Nishida, Kazunori Komatsu, Hiroki Tanaka, Hiroyuki Isobe, Masao Nakamura
  • Patent number: D678359
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 19, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Kazuhiko Hiraoka, Tomoyuki Miyata, Tomonori Mamada, Makoto Matsushita
  • Patent number: D678917
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 26, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Hiroki Tanaka, Tooru Harada
  • Patent number: D678918
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 26, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Kazuhiko Hiraoka, Masao Nakamura, Hiroyuki Isobe, Hiroshi Kumagai
  • Patent number: D681902
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: May 7, 2013
    Assignee: TCM Corporation
    Inventors: Kazuhiko Hiraoka, Shigehisa Hagura, Toshihiko Terashima, Munehito Adachi, Koji Shiizaki, Masahiro Takatsuji, Jun Fujita, Junichi Murakami, Yoshinori Mochida
  • Patent number: D681066
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: April 30, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Akira Saito, Kazuhiko Hiraoka, Shigehisa Hagura, Tomoyuki Miyata, Shogo Kimura, Tomoyuki Tanaka
  • Patent number: D681689
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: May 7, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Akira Saito, Kazuhiko Hiraoka, Shigehisa Hagura, Tomoyuki Miyata, Teruo Irino, Katsuhiro Sasaki, Kohei Urase, Tomoyuki Tanaka
  • Patent number: D684598
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 18, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Akira Saito, Teruo Irino, Makoto Motozu, Seiichi Kihara, Tomoyuki Tanaka
  • Patent number: D684600
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 18, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Akira Saito, Kazuhiko Hiraoka, Shigehisa Hagura, Tomoyuki Miyata, Teruo Irino, Katsuhiro Sasaki, Kohei Urase, Tomoyuki Tanaka
  • Patent number: D684603
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 18, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Kazuhiko Hiraoka, Tomoyuki Miyata, Akira Saito, Makoto Motozu, Seiichi Kihara, Yuuki Umizaki
  • Patent number: D684604
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 18, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Akira Saito, Kazuhiko Hiraoka, Shigehisa Hagura, Tomoyuki Miyata, Junya Kawamoto, Katsuhiro Sasaki, Osamu Kokuryo, Yasuhiro Miyahara
  • Patent number: D684607
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 18, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Tomoyuki Miyata, Tomoyuki Tanaka, Naoki Takeoka