Patents by Inventor Asuka Tejima

Asuka Tejima 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 DEVICE, ORIGINAL PLATE, METHOD OF MANUFACTURING ORIGINAL PLATE, AND IMAGING APPARATUS
    Publication number: 20150276990
    Abstract: Disclosed is an optical device including a curved surface and a plurality of structures spirally provided on the curved surface at an interval of less than or equal to a wavelength of light for which reflection is to be reduced. Each of the plurality of structures includes one of a convex portion protruding in a light-axis direction and a concave portion recessed in the light-axis direction. The curved surface has a region, in which the plurality of structures are not provided, at a center thereof.
    Type: Application
    Filed: March 23, 2015
    Publication date: October 1, 2015
    Applicant: Sony Corporation
    Inventors: Makoto Sato, Taichi Takeuchi, Asuka Tejima