Patents Assigned to DOCOMO Incorporated
  • Optics of wearable display devices
    Patent number: 10539798
    Abstract: A see-through image display system with high resolution up to 4K, wide field of view (FOV) beyond 60 degrees and small form factor is proposed. The optics for the display incorporates optical elements including hologram, DOE, lens and mirror with free form surfaces. This display system is suitable for a wearable display.
    Type: Grant
    Filed: July 15, 2017
    Date of Patent: January 21, 2020
    Assignees: DOCOMO Incorporated
    Inventors: Fusao Ishii, Yuji Aburakawa, Kazuhiko Takahashi, Keiichi Murakami, Mikiko Nakanishi
  • Manufacturing method of diffractive optical elements
    Patent number: 10520808
    Abstract: Manufacturing methods are disclosed to produce DOE, HOE and Fresnel optical elements. These methods enable low cost manufacturing with high precision. The methods include lithography, roll-to-roll imprint and UV-casting.
    Type: Grant
    Filed: November 11, 2017
    Date of Patent: December 31, 2019
    Assignees: DOCOMO Incorporated
    Inventors: Fusao Ishii, Nakanishi Mikiko, Takahashi Kazuhiko, Abrakawa Yuji, Keiichi Murakami