Patents by Inventor Hideo Kanda

Hideo Kanda 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).

  • Patent number: 9625681
    Abstract: An imaging lens consists of five lenses consisting of, in order from the object side, a biconvex first lens, a biconcave second lens, a positive third lens having a meniscus shape with the convex surface toward the image side, a positive fourth lens having a meniscus shape with the convex surface toward the image side, and a negative fifth lens having a concave surface toward the image side, and having at least one inflection point on the image-side surface thereof, wherein condition expression (1), 0<f/f3<0.6, relating to the focal length f of the entire system and the focal length f3 of the third lens, and condition expression (2), 0.12<D7/f<0.3, relating to the focal length f of the entire system and the distance D7 between the third lens and the fourth lens along the optical axis are satisfied.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: April 18, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Noboru Koizumi, Hideo Kanda, Michio Cho
  • Patent number: 9612426
    Abstract: An imaging lens consists of a front group having positive refractive power as a whole and a rear group in this order from an object side. The front group consists of three positive lenses, a negative lens with its concave surface facing an image side, a positive lens with its convex surface facing the object side, a negative lens with its concave surface facing the image side, a stop, a negative lens with its concave surface facing the object side and plural positive lenses in this order from the object side. The rear group has positive refractive power and consists of a positive lens and a negative lens in this order from the object side.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: April 4, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Hideo Kanda, Tomoyuki Baba, Takashi Suzuki, Michio Cho
  • Patent number: 9529177
    Abstract: An imaging lens is essentially constituted by five lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens of a biconcave shape; a third lens having a positive refractive power and is of a meniscus shape with a concave surface toward the object side; a fourth lens having a negative refractive power and a concave surface toward the object side; and a fifth lens having a negative refractive power and a concave surface toward the image side, provided in this order from the object side. The imaging lens satisfies predetermined conditional formulae.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: December 27, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Hideo Kanda
  • Patent number: 9329363
    Abstract: An imaging lens is substantially constituted by five lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens having a biconcave shape; a third lens having a positive refractive power and is of a meniscus shape having a concave surface toward the object side; a fourth lens having a concave surface toward the object side; and a fifth lens having a negative refractive power and is of a meniscus shape having a convex surface toward the object side, provided in this order from the object side. The imaging lens satisfies a predetermined conditional formula.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 3, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Hideo Kanda, Motoari Ota
  • Patent number: 9279962
    Abstract: An imaging lens is substantially constituted by five lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens having a negative refractive power and a concave surface toward the image side; a third lens having a negative refractive power and a concave surface toward the object side; a fourth lens having a positive refractive power and is of a meniscus shape with a concave surface toward the object side; and a fifth lens having a negative refractive power and is of a meniscus shape having a convex surface toward the image side, provided in this order from the object side. The imaging lens satisfies a predetermined conditional formula.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 8, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Hideo Kanda, Motoari Ota
  • Patent number: 9279957
    Abstract: An imaging lens substantially consists of, in order from an object side, five lenses of a first lens that has a positive refractive power and has a meniscus shape which is convex toward the object side, a second lens that has a negative refractive power, a third lens that has a negative refractive power, a fourth lens that has a positive refractive power, and a fifth lens that has a negative refractive power and has an aspheric shape of which an image side surface has an extreme point. Further, the imaging lens satisfies a predetermined conditional expression.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: March 8, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Hideo Kanda, Takayuki Noda, Noboru Koizumi, Tatsuyuki Ogino, Michio Cho, Kazumi Koike
  • Patent number: 9256053
    Abstract: An imaging lens substantially consists of, in order from an object side, five lenses of a first lens that has a biconvex shape, a second lens that has a negative refractive power, a third lens that has a negative refractive power and has a meniscus shape which is concave toward the object side, a fourth lens that has a positive refractive power, and a fifth lens that has a negative refractive power and has an aspheric shape which is concave toward an image side and of which an image side surface has an extreme point. Further, the imaging lens satisfies predetermined conditional expressions.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: February 9, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Hideo Kanda, Kazumi Koike
  • Publication number: 20160011406
    Abstract: An imaging lens consists of five lenses consisting of, in order from the object side, a biconvex first lens, a biconcave second lens, a positive third lens having a meniscus shape with the convex surface toward the image side, a positive fourth lens having a meniscus shape with the convex surface toward the image side, and a negative fifth lens having a concave surface toward the image side, and having at least one inflection point on the image-side surface thereof, wherein condition expression (1), 0<f/f3<0.6, relating to the focal length f of the entire system and the focal length f3 of the third lens, and condition expression (2), 0.12<D7/f<0.3, relating to the focal length f of the entire system and the distance D7 between the third lens and the fourth lens along the optical axis are satisfied.
    Type: Application
    Filed: September 24, 2015
    Publication date: January 14, 2016
    Inventors: NOBORU KOIZUMI, HIDEO KANDA, MICHIO CHO
  • Publication number: 20150226939
    Abstract: An imaging lens is essentially constituted by five lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens of a biconcave shape; a third lens having a positive refractive power and is of a meniscus shape with a concave surface toward the object side; a fourth lens having a negative refractive power and a concave surface toward the object side; and a fifth lens having a negative refractive power and a concave surface toward the image side, provided in this order from the object side. The imaging lens satisfies predetermined conditional formulae.
    Type: Application
    Filed: February 4, 2015
    Publication date: August 13, 2015
    Inventor: Hideo KANDA
  • Publication number: 20150177495
    Abstract: An imaging lens is substantially constituted by five lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens having a negative refractive power and a concave surface toward the image side; a third lens having a negative refractive power and a concave surface toward the object side; a fourth lens having a positive refractive power and is of a meniscus shape with a concave surface toward the object side; and a fifth lens having a negative refractive power and is of a meniscus shape having a convex surface toward the image side, provided in this order from the object side. The imaging lens satisfies a predetermined conditional formula.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 25, 2015
    Inventors: Hideo KANDA, Motoari OTA
  • Publication number: 20150177492
    Abstract: An imaging lens is substantially constituted by five lenses, including: a first lens having a positive refractive power and a convex surface toward the object side; a second lens having a biconcave shape; a third lens having a positive refractive power and is of a meniscus shape having a concave surface toward the object side; a fourth lens having a concave surface toward the object side; and a fifth lens having a negative refractive power and is of a meniscus shape having a convex surface toward the object side, provided in this order from the object side. The imaging lens satisfies a predetermined conditional formula.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 25, 2015
    Inventors: Hideo KANDA, Motoari OTA
  • Publication number: 20150160443
    Abstract: An imaging lens consists of a front group having positive refractive power as a whole and a rear group in this order from an object side. The front group consists of three positive lenses, a negative lens with its concave surface facing an image side, a positive lens with its convex surface facing the object side, a negative lens with its concave surface facing the image side, a stop, a negative lens with its concave surface facing the object side and plural positive lenses in this order from the object side. The rear group has positive refractive power and consists of a positive lens and a negative lens in this order from the object side.
    Type: Application
    Filed: February 18, 2015
    Publication date: June 11, 2015
    Inventors: Hideo KANDA, Tomoyuki BABA, Takashi SUZUKI, Michio CHO
  • Publication number: 20140293448
    Abstract: An imaging lens substantially consists of, in order from an object side, five lenses of a first lens that has a biconvex shape, a second lens that has a negative refractive power, a third lens that has a negative refractive power and has a meniscus shape which is concave toward the object side, a fourth lens that has a positive refractive power, and a fifth lens that has a negative refractive power and has an aspheric shape which is concave toward an image side and of which an image side surface has an extreme point. Further, the imaging lens satisfies predetermined conditional expressions.
    Type: Application
    Filed: March 19, 2014
    Publication date: October 2, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Hideo KANDA, Kazumi KOIKE
  • Publication number: 20140293452
    Abstract: An imaging lens substantially consists of, in order from an object side, five lenses of a first lens that has a positive refractive power and has a meniscus shape which is convex toward the object side, a second lens that has a negative refractive power, a third lens that has a negative refractive power, a fourth lens that has a positive refractive power, and a fifth lens that has a negative refractive power and has an aspheric shape of which an image side surface has an extreme point. Further, the imaging lens satisfies a predetermined conditional expression.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: HIDEO KANDA, TAKAYUKI NODA, NOBORU KOIZUMI, TATSUYUKI OGINO, MICHIO CHO, KAZUMI KOIKE
  • Publication number: 20110304856
    Abstract: A microinterferometer applies low coherent measurement light, which travels along an optical axis in a converging manner, to a front surface of a flange. A part of the measurement light is reflected inside an interferometric optical system, and becomes reference light. Apart of the measurement light passed through the interferometric optical system is reflected from the front surface of the flange, and is incident again upon the interferometric optical system. By combining the reflected light with the reference light, interference light is obtained. While a sample rotating stage rotates a sample lens through 360 degrees, a first imaging camera having one-dimensional image sensor captures 3600 images of the interference light, i.e., the image of the interference light is captured every time the sample lens is rotated by 0.1 degrees. Based on the images of interference fringes, the shape of the front surface of the flange is analyzed.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 15, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Zongtao GE, Masaaki TOMIMIZU, Hideo KANDA, Hiroyuki IWAZAKI, Noboru KOIZUMI, Takayuki SAITO, Seiji MOCHITATE, Takeshi OGASAWARA, Takashi NAKAJIMA
  • Publication number: 20110304855
    Abstract: Through a first diffraction grating, two conical fluxes different in wavefront propagation angle relative to its optical axis are applied to a first surface. Through a second diffraction grating, two conical fluxes different in wavefront propagation angle relative to its optical axis are applied to a second surface. Two sets of interference fringes formed by the fluxes reflected from the first surface and a reference beam are analyzed to obtain surface misalignment and angular misalignment of the first surface relative to the optical axis. Similarly, two sets of interference fringes formed by the fluxes reflected from the second surface and the reference beam are analyzed to obtain surface misalignment and angular misalignment of the second surface relative to the optical axis. Surface misalignment and angular misalignment of a sample lens are obtained from the measurement results of the first and second surfaces.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 15, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Nobuaki UEKI, Hideo KANDA
  • Patent number: 8059278
    Abstract: The relative position of a test surface is sequentially changed from a reference position where a surface central axis is aligned with a measurement optical axis such that the measurement optical axis is sequentially moved to a plurality of annular regions obtained by dividing the test surface in a diametric direction. The test surface is rotated on a rotation axis whenever the relative position is changed. Measurement light composed of a plane wave is radiated to the rotating test surface, and a one-dimensional image sensor captures interference fringes at each of a plurality of rotational positions. The shape information of each annular region is calculated on the basis of the captured interference fringes at each rotational position, and the shape information is connected to calculate the shape information of the entire measurement region.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: November 15, 2011
    Assignee: Fujinon Corporation
    Inventors: Zongtao Ge, Hideo Kanda, Takayuki Saito, Noboru Koizumi
  • Patent number: 7982882
    Abstract: The relative position of a test surface is sequentially changed from a reference position where a surface central axis is aligned with a measurement optical axis such that the measurement optical axis is sequentially moved to a plurality of annular regions obtained by dividing the test surface in a diametric direction. The test surface is rotated on a rotation axis whenever the relative position is changed. Measurement light that travels while being converged by a Mirau objective interference optical system is radiated to the rotating test surface, and a one-dimensional image sensor captures interference fringes at each of a plurality of rotational positions. The shape information of each annular region is calculated on the basis of the captured interference fringes at each rotational position, and the shape information is connected to calculate the shape information of the entire measurement region.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: July 19, 2011
    Assignee: Fujinon Corporation
    Inventors: Zongtao Ge, Hideo Kanda, Takayuki Saito, Noboru Koizumi
  • Publication number: 20100231923
    Abstract: A process of measuring a shape while changing the relative posture of an microscopic interferometer to a sample lens which is rotated about a rotation axis is divided into a process of measuring a top surface in a state where the sample lens is supported from a back surface and a process of measuring a back surface in a state where the sample lens is supported from the top surface. By combining first shape information of a flange side surface acquired by the process of measuring the top surface and second shape information of the flange side surface acquired by the process of measuring the back surface, the relative positional relation between the sample top surface and the sample back surface is calculated.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 16, 2010
    Inventors: Zongtao GE, Masaaki Tomimizu, Hideo Kanda, Takayuki Saito, Noboru Koizumi, Seiji Mochitate, Shigeyuki Takano, Hiroyuki Iwazaki
  • Publication number: 20100097619
    Abstract: The relative position of a test surface is sequentially changed from a reference position where a surface central axis is aligned with a measurement optical axis such that the measurement optical axis is sequentially moved to a plurality of annular regions obtained by dividing the test surface in a diametric direction. The test surface is rotated on a rotation axis whenever the relative position is changed. Measurement light that travels while being converged by a Mirau objective interference optical system is radiated to the rotating test surface, and a one-dimensional image sensor captures interference fringes at each of a plurality of rotational positions. The shape information of each annular region is calculated on the basis of the captured interference fringes at each rotational position, and the shape information is connected to calculate the shape information of the entire measurement region.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 22, 2010
    Inventors: Zongtao GE, Hideo KANDA, Takayuki SAITO, Noboru KOIZUMI