Patents by Inventor Tomiichi Hasegawa

Tomiichi Hasegawa 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).

  • Anisotropy analyzing method and an anisotropy analyzing apparatus
    Patent number: 6710882
    Abstract: A light beam from a laser source is divided into two light beams at a half mirror, and the plane of polarization of one of the two divided light beams is rotated by 90 degrees at a half-wave plate so as to be orthogonal to that of the other of the two divided light beams. The two divided light beams are superimposed and introduced into a sample to be measured in anisotropy. After passing through the sample, the superimposed light beam is split at a polarized light beam splitter into the above two light beams, and the plane of polarization of the other of the two light beam is rotated by 90 degrees at a half-wave plate so as to correspond to that of the one of the two light beams. Then, the two light beams is superimposed again at a half mirror, and an interference pattern of the superimposed light beam is projected on a screen.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: March 23, 2004
    Assignee: Niigata University
    Inventor: Tomiichi Hasegawa
  • Anisotropy analyzing method and an anisotropy analyzing apparatus
    Publication number: 20020048024
    Abstract: A light beam from a laser source is divided into two light beams at a half mirror, and the plane of polarization of one of the two divided light beams is rotated by 90 degrees at a half-wave plate so as to be orthogonal to that of the other of the two divided light beams. The two divided light beams are superimposed and introduced into a sample to be measured in anisotropy. After passing through the sample, the superimposed light beam is split at a polarized light beam splitter into the above two light beams, and the plane of polarization of the other of the two light beam is rotated by 90 degrees at a half-wave plate so as to correspond to that of the one of the two light beams. Then, the two light beams is superimposed again at a half mirror, and an interference pattern of the superimposed light beam is projected on a screen.
    Type: Application
    Filed: July 12, 2001
    Publication date: April 25, 2002
    Inventor: Tomiichi Hasegawa