Patents by Inventor Masatoshi Togashi

Masatoshi Togashi 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 lens and method of manufacturing the same
    Patent number: 7499220
    Abstract: In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: March 3, 2009
    Assignee: Alps Electric Co., Ltd.
    Inventors: Masatoshi Togashi, Hisashi Murata
  • Optical lens and method of manufacturing the same
    Patent number: 7327522
    Abstract: In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: February 5, 2008
    Assignee: Alps Electric Co., Ltd.
    Inventors: Masatoshi Togashi, Hisashi Murata
  • Optical lens and method of manufacturing the same
    Publication number: 20060250931
    Abstract: In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.
    Type: Application
    Filed: July 3, 2006
    Publication date: November 9, 2006
    Inventors: Masatoshi Togashi, Hisashi Murata
  • Optical lens and method of manufacturing the same
    Publication number: 20060018028
    Abstract: In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 26, 2006
    Inventors: Masatoshi Togashi, Hisashi Murata
  • Resin-molded optical element and method for manufacturing the same
    Patent number: 6437928
    Abstract: In an optical element having an optical axis and formed by resin-molding using molds, the position of the optical axis at a lens surface is set at the position of a pinpoint gate serving as an inlet for resin, and a doughnut-shaped light-shielding zone for blocking light is provided in such a manner as to surround a cut portion of the resin at the pinpoint gate.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: August 20, 2002
    Assignee: Alps Electric Co., Ltd.
    Inventor: Masatoshi Togashi
  • Resin-molded optical element and method for manufacturing the same
    Publication number: 20010008468
    Abstract: In an optical element having an optical axis and formed by resin-molding using molds, the position of the optical axis at a lens surface is set at the position of a pinpoint gate serving as an inlet for resin, and a doughnut-shaped light-shielding zone for blocking light is provided in such a manner as to surround a cut portion of the resin at the pinpoint gate.
    Type: Application
    Filed: January 8, 2001
    Publication date: July 19, 2001
    Applicant: Alps Electric Co., Ltd.
    Inventor: Masatoshi Togashi