Patents by Inventor Etsuji Gohdo

Etsuji Gohdo 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).

  • Laser theodolite
    Patent number: 5905592
    Abstract: A laser theodolite is provided which comprises a telescope (6), a focusing lens (10) and a reticle (12) provided in the telescope, a polarization beam splitter (13') provided on an optical axis (O) between the focusing lens and the reticle for reflecting a laser beam (S1) in a direction of collimation, and a laser-beam light source portion (16) for emitting the laser light toward the polarization beam splitter (13'). The laser-beam light source portion (16) and the reticle (12) are conjugate with respect to the polarization beam splitter (13').
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: May 18, 1999
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Etsuji Gohdo, Takashi Maezawa, Michiyo Saito