Patents by Inventor Nozomu Kowatari

Nozomu Kowatari 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 magnification adjustment system and projection exposure device
    Patent number: 6831730
    Abstract: An optical magnification adjustment system being capable of minutely correcting magnification. A first lens 1 of plano-convex is installed on the side of an object surface 5, and a second lens 2 of concave-plano is installed on the side of a formed image surface 7. By controlling the center space d between the first lens and the second lens, the image is enlarged or reduced. The radii of curvature R2 and R3 of the convex surface of the first lens and the concave surface of the second lens are respectively set according to the following equations. R2=(1−n1)/&phgr;2 R3=(n2−1)/&phgr;3 where, &phgr;2 and &phgr;3 represent optical power, and n1 and n2 represent refraction indexes, respectively.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: December 14, 2004
    Assignee: Adtec Engineering Co., Ltd.
    Inventors: Noriyoshi Matsumoto, Nozomu Kowatari, Youichi Hirabayashi
  • Optical magnification adjustment system and projection exposure device
    Publication number: 20040160587
    Abstract: An optical magnification adjustment system being capable of minutely correcting magnification. A first lens 1 of plano-convex is installed on the side of an object surface 5, and a second lens 2 of concave-plano is installed on the side of a formed image surface 7. By controlling the center space d between the first lens and the second lens, the image is enlarged or reduced. The radii of curvature R2 and R3 of the convex surface of the first lens and the concave surface of the second lens are respectively set according to the following equations.
    Type: Application
    Filed: February 10, 2004
    Publication date: August 19, 2004
    Inventors: Noriyoshi Matsumoto, Nozomu Kowatari, Youichi Hirabayashi
  • Optical magnification adjustment system and projection exposure device
    Patent number: 6738195
    Abstract: An optical magnification adjustment system being capable of minutely correcting magnification. A first lens 1 of plano-convex is installed on the side of an object surface 5, and a second lens 2 of concave-plano is installed on the side of a formed image surface 7. By controlling the center space d between the first lens and the second lens, the image is enlarged or reduced. The radii of curvature R2 and R3 of the convex surface of the first lens and the concave surface of the second lens are respectively set according to the following equations. R2=(1−n1)/&phgr;2 R3=(n2−1)/&phgr;3 where, &phgr;2 and &phgr;3 represent optical power, and n1 and n2 represent refraction indexes, respectively.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: May 18, 2004
    Assignee: Adtec Engineering Co., Ltd.
    Inventors: Noriyoshi Matsumoto, Nozomu Kowatari, Youichi Hirabayashi
  • Optical magnification adjustment system and projection exposure device
    Publication number: 20030095342
    Abstract: An optical magnification adjustment system being capable of minutely correcting magnification. A first lens 1 of plano-convex is installed on the side of an object surface 5, and a second lens 2 of concave-plano is installed on the side of a formed image surface 7. By controlling the center space d between the first lens and the second lens, the image is enlarged or reduced. The radii of curvature R2 and R3 of the convex surface of the first lens and the concave surface of the second lens are respectively set according to the following equations.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 22, 2003
    Inventors: Noriyoshi Matsumoto, Nozomu Kowatari, Youichi Hirabayashi