Patents by Inventor Shuichi USUDA

Shuichi USUDA 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).

  • Multi-beam semiconductor laser device
    Patent number: 9231374
    Abstract: Provided is a multi-beam semiconductor laser device in which deterioration of element characteristics is suppressed even when a beam pitch is reduced. The multi-beam semiconductor laser device includes: a first semiconductor multilayer in which a plurality of semiconductor layers are laminated; a plurality of light emitting ridge portions that are formed on the first semiconductor multilayer; a support electrode portion formed in a region between a pair of neighboring light emitting ridge portions; and a front ridge portion formed on the front side of the support electrode portion. The support electrode portion is electrically connected to one of the pair of neighboring light emitting ridge portions. The support electrode portion is higher than the one light emitting ridge portion. An end of the front ridge portion on the front end surface side is higher than the one light emitting ridge portion at the front end surface.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: January 5, 2016
    Assignee: USHIO OPTO SEMICONDUCTORS, INC.
    Inventors: Yutaka Inoue, Hideki Hara, Shuichi Usuda
  • MULTI-BEAM SEMICONDUCTOR LASER DEVICE
    Publication number: 20150055670
    Abstract: Provided is a multi-beam semiconductor laser device in which deterioration of element characteristics is suppressed even when a beam pitch is reduced. The multi-beam semiconductor laser device includes: a first semiconductor multilayer in which a plurality of semiconductor layers are laminated; a plurality of light emitting ridge portions that are formed on the first semiconductor multilayer; a support electrode portion formed in a region between a pair of neighboring light emitting ridge portions; and a front ridge portion formed on the front side of the support electrode portion. The support electrode portion is electrically connected to one of the pair of neighboring light emitting ridge portions. The support electrode portion is higher than the one light emitting ridge portion. An end of the front ridge portion on the front end surface side is higher than the one light emitting ridge portion at the front end surface.
    Type: Application
    Filed: August 22, 2014
    Publication date: February 26, 2015
    Inventors: Yutaka INOUE, Hideki HARA, Shuichi USUDA