Patents by Inventor Eiji Ototsuki

Eiji Ototsuki 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).

  • BEAM-SHAPING LENS, BEAM-SHAPING ELEMENT, LIGHT SOURCE DEVICE FOR AN ENDOSCOPE, AND ENDOSCOPE
    Publication number: 20250098943
    Abstract: A beam-shaping lens includes a first surface including a smooth-shaped concave surface; and a second surface including a convex surface substantially similar in shape to the concave surface. The beam-shaping lens converts a first light beam that is parallel light incident on the first surface and having a light intensity distribution that continuously increases from an outer periphery toward a center, into a second light beam that has a flatter light intensity distribution than that of the first light beam.
    Type: Application
    Filed: October 5, 2022
    Publication date: March 27, 2025
    Applicants: Sumita Optical Glass, Inc., NIREC Corporation
    Inventors: Jun OTAKE, Hiroki WATANABE, Eiji OTOTSUKI, Yuichi TAKENAGA
  • Helmet-mounted light
    Patent number: D753857
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: April 12, 2016
    Assignee: SUMITA OPTICAL GLASS, INC.
    Inventors: Eiji Ototsuki, Daisuke Sekido
  • Helmet-mounted light
    Patent number: D753858
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: April 12, 2016
    Assignee: SUMITA OPTICAL GLASS, INC.
    Inventor: Eiji Ototsuki
  • Helmet-mounted light
    Patent number: D753859
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: April 12, 2016
    Assignee: SUMITA OPTICAL GLASS, INC.
    Inventors: Eiji Ototsuki, Daisuke Sekido