Patents by Inventor Junichi Mizuma

Junichi Mizuma 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).

  • OPTICAL ELEMENT, PRODUCTION METHOD THEREOF, AND PROJECTION IMAGE DISPLAY DEVICE
    Publication number: 20210165151
    Abstract: An optical element including a substrate that is transparent to light at a using wavelength band, an antireflection layer, a matching layer, and a birefringent layer formed of an oblique angle vapor deposition film, wherein an optical loss in the optical element at the using wavelength band is 1.0% or less, and the optical loss is calculated using the following formulae from intensity of transmitted light and intensity of reflected light measured by S-polarized light at an incident angle of 5° in the optical element, Transmittance=intensity of transmitted light/intensity of incident light (%) Reflectance=intensity of reflected light/intensity of incident light (%) Optical loss (%)=100%?transmittance (%)?reflectance (%).
    Type: Application
    Filed: November 27, 2020
    Publication date: June 3, 2021
    Applicant: DEXERIALS CORPORATION
    Inventors: Junichi SUGAWARA, Masatoshi SASAKI, Hironori OSHIMA, Junichi MIZUMA
  • Micro-lens array substrate and method for manufacturing thereof
    Patent number: 7978413
    Abstract: A micro-lens substrate having a precise micro-lens array suitable for higher resolution, the micro-lens array substrate of high quality without having a distortion, and a method for manufacturing thereof are provided. In the micro-lens array substrate of the present invention, a micro-lens array formed of a plurality of consecutive concave lens-shaped micro-lenses is directly formed in a surface of a quartz substrate or glass substrate, and the micro-lens array is formed by a transfer method based on dry-etching. In the micro-lens array substrate of the present invention, a taper portion is formed toward the surface of the substrate in a peripheral portion of the micro-lens array in the quartz substrate or glass substrate.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: July 12, 2011
    Assignee: Sony Corporation
    Inventors: Moriaki Abe, Hiroyuki Minami, Kenichi Satoh, Kazuhiro Shinoda, Junichi Mizuma
  • Micro-lens array substrate and production method therefor
    Patent number: 7715104
    Abstract: In the micro-lens array substrate of the present invention, a micro-lens array formed of a plurality of consecutive concave lens-shaped micro-lenses is directly formed in a surface of a quartz substrate or glass substrate, and the micro-lens array is formed by a transfer method based on dry-etching. In the micro-lens array substrate of the present invention, a taper portion is formed toward the surface of the substrate in a peripheral portion of the micro-lens array in the quartz substrate or glass substrate.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: May 11, 2010
    Assignee: Sony Corporation
    Inventors: Moriaki Abe, Hiroyuki Minami, Kenichi Satoh, Kazuhiro Shinoda, Junichi Mizuma
  • MICRO-LENS ARRAY SUBSTRATE AND METHOD FOR MANUFACTURING THEREOF
    Publication number: 20090212011
    Abstract: A micro-lens substrate having a precise micro-lens array suitable for higher resolution, the micro-lens array substrate of high quality without having a distortion, and a method for manufacturing thereof are provided. In the micro-lens array substrate of the present invention, a micro-lens array formed of a plurality of consecutive concave lens-shaped micro-lenses is directly formed in a surface of a quartz substrate or glass substrate, and the micro-lens array is formed by a transfer method based on dry-etching. In the micro-lens array substrate of the present invention, a taper portion is formed toward the surface of the substrate in a peripheral portion of the micro-lens array in the quartz substrate or glass substrate.
    Type: Application
    Filed: April 30, 2009
    Publication date: August 27, 2009
    Applicant: Sony Corporation
    Inventors: Moriaki ABE, Hiroyuki MINAMI, Kenichi SATOH, Kazuhiro SHINODA, Junichi MIZUMA
  • Microlens array substrate and production method therefor
    Publication number: 20060215269
    Abstract: A micro-lens substrate having a precise micro-lens array suitable for higher resolution, the micro-lens array substrate of high quality without having a distortion, and a method for manufacturing thereof are provided. In the micro-lens array substrate of the present invention, a micro-lens array formed of a plurality of consecutive concave lens-shaped micro-lenses is directly formed in a surface of a quartz substrate or glass substrate, and the micro-lens array is formed by a transfer method based on dry-etching. In the micro-lens array substrate of the present invention, a taper portion is formed toward the surface of the substrate in a peripheral portion of the micro-lens array in the quartz substrate or glass substrate.
    Type: Application
    Filed: March 25, 2005
    Publication date: September 28, 2006
    Applicant: Sony Corporation
    Inventors: Moriaki Abe, Hiroyuki Minami, Kenichi Satoh, Kazuhiro Shinoda, Junichi Mizuma