Patents by Inventor Kazuhito Shimoda

Kazuhito Shimoda 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: 7019899
    Abstract: There is provided a screen, which, with a simple configuration, is capable of effectively utilizing light projected thereon and realizing an even luminance distribution on the screen. This screen has a diffusion layer whose diffusion characteristic expressed as a luminance distribution with respect to a scattering angle of incident light incident at an angle of 0° is varied such that the peak position of the luminance distribution is shifted towards a greater value of scattering angle in the direction of the central portion of the screen the greater the distance from the central portion of the screen is. The present invention also provides an optical film suitable for use in such a screen, and a manufacturing method therefor.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: March 28, 2006
    Assignee: Sony Corporation
    Inventors: Hideya Chubachi, Masayasu Kakinuma, Hiroshi Hayashi, Kazuhito Shimoda, Tomoharu Mukasa, Shina Kuriki
  • Patent number: 7016111
    Abstract: There is provided a screen, which, with a simple configuration, is capable of effectively utilizing light projected thereon and realizing an even luminance distribution on the screen. This screen has a diffusion layer whose diffusion characteristic expressed as a luminance distribution with respect to a scattering angle of incident light incident at an angle of 0° is varied such that the peak position of the luminance distribution is shifted towards a greater value of scattering angle in the direction of the central portion of the screen the greater the distance from the central portion of the screen is. The present invention also provides an optical film suitable for use in such a screen, and a manufacturing method therefor.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: March 21, 2006
    Assignee: Sony Corporation
    Inventors: Hideya Chubachi, Masayasu Kakinuma, Hiroshi Hayashi, Kazuhito Shimoda, Tomoharu Mukasa, Shina Kuriki
  • Publication number: 20060001959
    Abstract: An optical multilayer film and reflective screen are provided. An optical multilayer film includes an optical laminate A including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate A having a reflection characteristic in which the reflectance peak intensities in the red, green, and blue wavelength regions are substantially the same; and an optical laminate B including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate B having a reflection characteristic in which the bottom of the reflectance curve lies in the green wavelength region.
    Type: Application
    Filed: June 17, 2005
    Publication date: January 5, 2006
    Inventors: Masaharu Senoue, Kazuhiko Morisawa, Shinjiro Umeya, Kazuhito Shimoda, Shunichi Kajiya
  • Publication number: 20050280898
    Abstract: A reflective screen is provided. A reflective screen that displays an image by reflecting light from a light source includes a reflective sheet, a light-scattering sheet, and an adhesive layer bonding the reflective sheet to the light-scattering sheet. The adhesive layer contains a coloring material that absorbs light in a particular wavelength region.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 22, 2005
    Inventors: Yoshihiro Oshima, Masayasu Kakinuma, Hideya Chubachi, Hiroshi Hayashi, Kazuhito Shimoda, Shina Kirita
  • Publication number: 20050219691
    Abstract: There is provided a screen, which, with a simple configuration, is capable of effectively utilizing light projected thereon and realizing an even luminance distribution on the screen. This screen has a diffusion layer whose diffusion characteristic expressed as a luminance distribution with respect to a scattering angle of incident light incident at an angle of 0° is varied such that the peak position of the luminance distribution is shifted towards a greater value of scattering angle in the direction of the central portion of the screen the greater the distance from the central portion of the screen is. The present invention also provides an optical film suitable for use in such a screen, and a manufacturing method therefor.
    Type: Application
    Filed: May 23, 2005
    Publication date: October 6, 2005
    Inventors: Hideya Chubachi, Masayasu Kakinuma, Hiroshi Hayashi, Kazuhito Shimoda, Tomoharu Mukasa, Shina Kuriki
  • Publication number: 20050207007
    Abstract: A screen for displaying an image by projection light includes: a selectively reflective layer having reflection properties with respect to light in a specific wavelength region corresponding to the projection light, and having absorption properties with respect to light in a wavelength region other than the specific wavelength region. And the selectively reflective layer includes an optical multilayer film having a dielectric film and a light-absorbing thin film having transmission properties, and a reflective layer for reflecting light which has passed through the optical multilayer film.
    Type: Application
    Filed: March 17, 2005
    Publication date: September 22, 2005
    Inventors: Kazuhito Shimoda, Masayasu Kakinuma, Takashi Watanabe, Shunichi Kajiya
  • Publication number: 20050018285
    Abstract: A clear image unaffected by the brightness of the projection environment. The projection screen according to the present invention is a projection screen for projecting thereupon narrow-band tricolor wavelength band light to display an image, and comprises an optical thin film (3) which has high reflection properties regarding the narrow-band tricolor wavelength band light, and has high transmission properties regarding at least visible wavelength band light other than the wavelength band light, on a screen base (2). With the projection screen according to the present invention configured as above, the optical thin film (3) serves as a so-called band filter. That is to say, the optical thin film (3) particularly reflects narrow-band tricolor wavelength band light and transmits light of other wavelengths, thereby functioning as a narrow-band tricolor wavelength bandwidth filter acting to separate these.
    Type: Application
    Filed: March 14, 2003
    Publication date: January 27, 2005
    Inventors: Shigeo Kubota, Junichi Ohsako, Masayasu Kakinuma, Kazuhito Shimoda
  • Publication number: 20040240053
    Abstract: The invention provides a projection screen, wherein clear images can be obtained without being influenced by projection environments, the flexibility can be obtained, and its manufacturing cost can be reduced and its manufacturing method. An optical multilayer film is formed on a transparent substrate by alternately layering metal films and dielectric films by using spattering. This multilayer film has the high reflection characteristics in relation to three primary colors wavelength bands lights, and has the high absorption characteristics in relation to lights other than the three primary colors wavelength bands lights. Therefore, the white level and the black level of images can be raised. Further, in terms of the optical multilayer film, as the film thickness dependence of the reflectance change becomes smaller and the incidence angle dependence of reflectance change becomes smaller, a wide visual field angle can be obtained.
    Type: Application
    Filed: July 24, 2003
    Publication date: December 2, 2004
    Applicant: Sony Corporation
    Inventor: Kazuhito Shimoda
  • Patent number: 6822705
    Abstract: Provided are a reflective liquid crystal display and a light guide plate capable of eliminating a decline in virtual contrast properties of a display screen in a reflective liquid crystal display comprising a light guide plate with a prism unit so as to display an excellent image. An antireflective film (40) is formed on a planar surface of a light guide plate (50) which is disposed so as to face a viewing side of a liquid crystal display panel (10). The antireflective film (40) inhibits light reflection on the planar surface of the light guide plate (50). Moreover, an adhesive layer (51) is provided to improve the adhesion of the antireflective film (40) to the planar surface of the light guide plate (50).
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: November 23, 2004
    Assignee: Sony Corporation
    Inventors: Kazuhito Shimoda, Junichi Ohsako, Yoshinari Kawashima, Takashi Oku
  • Patent number: 6819045
    Abstract: A display device comprises a display pail having a flexible panel substrate serving as a display elements disposed lengthwise and breadthwise on a surface opposite to the display screen of the panel substrate; and driving circuit parts having flexible driving circuit substrates on which semiconductor elements made of flexile semiconductor materials are mounted. Accordingly, the completely flexible display device in which not only the display part, but also the driving circuit parts have flexibility can be provided.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: November 16, 2004
    Assignee: Sony Corporation
    Inventors: Hiroyuki Okita, Junichi Ohsako, Kazuhito Shimoda
  • Publication number: 20040196551
    Abstract: There is provided a screen, which, with a simple configuration, is capable of effectively utilizing light projected thereon and realizing an even luminance distribution on the screen. This screen has a diffusion layer whose diffusion characteristic expressed as a luminance distribution with respect to a scattering angle of incident light incident at an angle of 0° is varied such that the peak position of the luminance distribution is shifted towards a greater value of scattering angle in the direction of the central portion of the screen the greater the distance from the central portion of the screen is. The present invention also provides an optical film suitable for use in such a screen, and a manufacturing method therefor.
    Type: Application
    Filed: January 20, 2004
    Publication date: October 7, 2004
    Inventors: Hideya Chubachi, Masayasu Kakinuma, Hiroshi Hayashi, Kazuhito Shimoda, Tomoharu Mukasa, Shina Kuriki
  • Publication number: 20040150883
    Abstract: A projection screen and a method for manufacturing the same providing clear images regardless of the brightness of the environment where the projection screen is used.
    Type: Application
    Filed: March 29, 2004
    Publication date: August 5, 2004
    Inventors: Kazuhito Shimoda, Toshitaka Kawashima
  • Patent number: 6733821
    Abstract: A method for forming an optical component includes (i) depositing optical layers on a base, and (ii) controlling a thickness of a tuning layer by (a) depositing the tuning layer on the optical layers, (b) measuring a first optical characteristic, (c) measuring a second optical characteristic after continued deposition of the tuning layer, (d) determining whether the second optical characteristic has decreased compared to the first optical characteristic, (e) when the second optical characteristic has not decreased, continuing deposition of the tuning layer and returning to steps (ii)(b)-(e), when the second optical characteristic has decreased, terminating the depositing and removing a portion of the tuning layer formed during a period of time defined from when an increase/decrease of the second optical characteristic is stopped to when the second optical characteristic is changed to be decreased, and (f) adding a layer of a lower refractive index on the tuning layer.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: May 11, 2004
    Assignee: Sony Corporation
    Inventors: Kazuhito Shimoda, Junichi Ohsako
  • Publication number: 20030076465
    Abstract: Provided are a reflective liquid crystal display and a light guide plate capable of eliminating a decline in virtual contrast properties of a display screen in a reflective liquid crystal display comprising a light guide plate with a prism unit so as to display an excellent image. An antireflective film (40) is formed on a planar surface of a light guide plate (50) which is disposed so as to face a viewing side of a liquid crystal display panel (10). The antireflective film (40) inhibits light reflection on the planar surface of the light guide plate (50). Moreover, an adhesive layer (51) is provided to improve the adhesion of the antireflective film (40) to the planar surface of the light guide plate (50).
    Type: Application
    Filed: November 20, 2002
    Publication date: April 24, 2003
    Inventors: Kazuhito Shimoda, Junichi Ohsako, Yoshinari Kawshima, Takashi Oku
  • Publication number: 20020071082
    Abstract: A display device comprises a display part having a flexible panel substrate serving as a display screen and display elements disposed lengthwise and breadthwise on a surface opposite to the display screen of the panel substrate; and driving circuit parts having flexible driving circuit substrates on which semiconductor elements made of flexible semiconductor materials are mounted. Accordingly, the completely flexible display device in which not only the display part, but also the driving circuit parts have flexibility can be provided.
    Type: Application
    Filed: September 6, 2001
    Publication date: June 13, 2002
    Inventors: Hiroyuki Okita, Junichi Ohsako, Kazuhito Shimoda