Patents by Inventor Takayoshi Togino

Takayoshi Togino 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: 10330914
    Abstract: A stereoscopic imaging optical system assembly including a first optical system at least including, in order from an object side to an image plane side, a negative lens and an aperture, the first optical system being rotationally symmetric with respect to a first center axis, a second optical system that is rotationally symmetric with respect to a second center axis parallel with the first center axis, and that has the same construction as, and is located in parallel with, the first optical system, and a variable optical system located in such a way as to intersect the respective optical paths through the first optical system and the second optical system. The variable optical system effects a change of at least either one of focus and vergence.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 25, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Takayoshi Togino
  • Patent number: 10274717
    Abstract: An optical system 1 includes, in order from an object side to an image plane side, a front group Gf including a first front group Gf1 arranged centering a first front central axis Cf1 and a second front group Gf2 arranged centering a second front group central axis Cf2 as a rotation symmetry axis extending parallel to the first front group central axis Cf1; and a back group Gb arranged centering a single back group central axis Cb. A central principal ray of a first light beam L1 that has passed through the first front group Gf1 and a central principal ray of a second light beam L2 that has passed through the second front group Gf2 do not cross each other from when they exit from the back group Gb to when they reach the image plane.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: April 30, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Takayoshi Togino
  • Publication number: 20180042461
    Abstract: The optical system is characterized by a rotationally symmetric front group that is located on a single axis of rotational symmetry passing through the center of an image plane, a rotationally symmetric back group, and an aperture, wherein the front group includes two internal reflecting surfaces and two transmitting surfaces, a light beam incident from at least one object plane on the front group forms an optical path along which the light beam enters a first transmitting surface, is reflected off a first reflecting surface and then off a second reflecting surface, and exits out of a second transmitting surface, and the light beam passes through the back group and aperture and is imaged in a position of the image plane away from the axis of rotational symmetry without being intermediately imaged within a section including the axis of rotational symmetry.
    Type: Application
    Filed: October 25, 2017
    Publication date: February 15, 2018
    Applicant: OLYMPUS CORPORATION
    Inventor: Takayoshi TOGINO
  • Patent number: 9864185
    Abstract: Provided is a three-dimensional-endoscope optical system that is provided with two objective optical systems having optical axes, which are arranged with a spacing therebetween, and that satisfies the following conditions: 0.5 mm<OP<1.5 mm??(1); 3 mm<D<200 mm??(2); ?<10°??(3); and 110°<?<180°??(4), where OP is a spacing between the optical axes of optical members at the most distal ends of the objective optical systems, D is a depth of field, ? is an angle of convergence (inward angle) of the depth of field D when performing near-point observation, and ? is an angle of view of the objective optical systems.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: January 9, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Takayoshi Togino, Ikutoshi Fukushima, Yasushi Namii, Mitsujiro Konno
  • Publication number: 20160370571
    Abstract: A first central principal ray Lc1 of a first light beam L1 that has passed through a first front group Gf1 passes through a back first group Gb1, a first aperture center CS1, a first deflection group Gv1, and a back second group Gb2 at a position separated from a back group central axis Cb and reaches a image plane I, and a second central principal ray Lc2 of a second light beam L2 that has passed through a second front group Gf2 passes through the back first group Gb1, a second aperture center CS2, a second deflection group Gv2, and the back second group Gb2 at a position separated from the back group central axis Cb and reaches the image plane I.
    Type: Application
    Filed: August 29, 2016
    Publication date: December 22, 2016
    Applicant: OLYMPUS CORPORATION
    Inventor: Takayoshi TOGINO
  • Publication number: 20160320606
    Abstract: An optical system 1 includes, in order from an object side to an image plane side, a front group Gf including a first front group Gf1 arranged centering a first front central axis Cf1 and a second front group Gf2 arranged centering a second front group central axis Cf2 as a rotation symmetry axis extending parallel to the first front group central axis Cf1; and a back group Gb arranged centering a single back group central axis Cb. A central principal ray of a first light beam L1 that has passed through the first front group Gf1 and a central principal ray of a second light beam L2 that has passed through the second front group Gf2 do not cross each other from when they exit from the back group Gb to when they reach the image plane.
    Type: Application
    Filed: July 13, 2016
    Publication date: November 3, 2016
    Applicant: OLYMPUS CORPORATION
    Inventor: Takayoshi TOGINO
  • Publication number: 20160282602
    Abstract: The stereoscopic imaging optical system 1 includes, in order from an object side thereof to an image plane side thereof, a front group Gf including a first front group Gf1 with a center axis C1 thereof as center and a second front group Gf2 with a center axis C2 thereof arranged parallel with the center axis of the first front group as center, a front deflection group Gfd located on an image plane side of at least one of the first front group Gf1 and the second front group, and a rear group Gb that is located on the image plane side of the front group Gf and the front deflection group Gfd and has a single center axis.
    Type: Application
    Filed: June 5, 2016
    Publication date: September 29, 2016
    Inventor: Takayoshi TOGINO
  • Publication number: 20160070094
    Abstract: A stereoscopic imaging optical system assembly including a first optical system at least including, in order from an object side to an image plane side, a negative lens and an aperture, the first optical system being rotationally symmetric with respect to a first center axis, a second optical system that is rotationally symmetric with respect to a second center axis parallel with the first center axis, and that has the same construction as, and is located in parallel with, the first optical system, and a variable optical system located in such a way as to intersect the respective optical paths through the first optical system and the second optical system. The variable optical system effects a change of at least either one of focus and vergence.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 10, 2016
    Applicant: OLYMPUS CORPORATION
    Inventor: Takayoshi TOGINO
  • Publication number: 20140177043
    Abstract: Provided is a three-dimensional-endoscope optical system that is provided with two objective optical systems having optical axes, which are arranged with a spacing therebetween, and that satisfies the following conditions: 0.5 mm<OP<1.5 mm??(1); 3 mm<D<200 mm??(2); ?<10°??(3); and 110°<?<180°??(4), where OP is a spacing between the optical axes of optical members at the most distal ends of the objective optical systems, D is a depth of field, ? is an angle of convergence (inward angle) of the depth of field D when performing near-point observation, and ? is an angle of view of the objective optical systems.
    Type: Application
    Filed: February 26, 2014
    Publication date: June 26, 2014
    Applicants: Olympus Corporation, Olympus Medical Systems Corp.
    Inventors: Takayoshi Togino, Ikutoshi Fukushima, Yasushi Namii, Mitsujiro Konno
  • Patent number: 8351124
    Abstract: In the visual display device of the present invention, the first reflection plane 11 is so disposed as to face the eye point 4 in order of an optical path of reverse tracing that extends from the eye point 4 to the two-dimensional image displaying plane 3; the second reflection plane 21 is so disposed as to face the two-dimensional image displaying plane 3, and an optical axis connecting the first reflection plane 11 to the eye point 4 is so disposed as to cross an optical axis connecting the second reflection plane 21 to the two-dimensional image displaying plane 3; both the first and second reflection planes 11 and 21 have positive power; and diopter difference S of the position of a virtual image associated with diopter is substantially equal to that of the position of a virtual image associated with convergence.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: January 8, 2013
    Assignee: Olympus Corporation
    Inventor: Takayoshi Togino
  • Patent number: 8339719
    Abstract: The invention relates to an optical apparatus allowing images in multiple directions to be simultaneously taken with simple construction using a prism optical system yet with high definitions even at wide angles of view. Specifically, the invention provides an optical apparatus using a prism optical system which has three optical surfaces: a first surface having transmission, a second surface having internal reflection plus transmission and a third surface having reflection and is formed of a medium having a refractive index of 1.3 or greater and in which light enters the medium through the first surface, is totally reflected at the second surface, and then reflected at the third surface 13, and finally leaves the medium this time through the second surface.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: December 25, 2012
    Assignee: Olympus Corporation
    Inventor: Takayoshi Togino
  • Patent number: 8330846
    Abstract: An image pickup apparatus is provided with an imaging optical system (imaging lens), an image sensor for picking up a subject image formed by the imaging optical system, and a view division optical system (first mirror) which divides a view picked up by the image sensor into an environment imaging side view and an eyeball imaging side view.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: December 11, 2012
    Assignee: Olympus Corporation
    Inventors: Takashi Miyoshi, Akio Kosaka, Hidekazu Iwaki, Takayoshi Togino
  • Patent number: 8289631
    Abstract: The invention provides a superwide-angle imaging or projecting optical system provided that, albeit being a wide-angle optical system having an angle of view exceeding 180°, is of small size and reduced F-number and fast, and has improved f-? performance. The optical system consists only of transmitting surfaces, and has an angle of view of 180° or more. The optical system comprises a front group (Gf) comprising at least one meniscus lens (L1) having a negative focal length, an aperture (S), and a rear group (Gb) comprising at least two lenses having a positive focal length. At least one transmitting surface in the front group is made up of an extended rotation free-form surface.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: October 16, 2012
    Assignee: Olympus Corporation
    Inventor: Takayoshi Togino
  • Patent number: 8289630
    Abstract: An optical element that is made of a transparent medium L1 rotationally symmetric relative to the central axis 2 with a refractive index greater than 1, wherein the transparent medium L1 has a first transmissive surface 11, a first reflective surface 12, a second reflective surface 13 arranged at an opposite side to the image plane 5 relative to the first reflective surface 12 and a second transmissive surface 14 arranged at the image plane 5 side relative to the second reflective surface 13 and that the flux of light entering the transparent medium L1 goes into it by way of the first transmissive surface 11 so as to be reflected to the opposite side to the image plane 5 by the first reflective surface 12 and then to the image plane 5 side by the second reflective surface 13 to form an optical path before going out from the transparent medium L1 at the image plane 5 side by way of the second transmissive surface 14 in the order of forward ray tracing.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: October 16, 2012
    Assignee: Olympus Corporation
    Inventor: Takayoshi Togino
  • Patent number: 8254038
    Abstract: An optical element is made of a transparent medium that is rotationally symmetric relative to the central axis with a refractive index greater than 1. The transparent medium has a first transmissive surface at the outermost periphery relative to the central axis, a first reflective surface at the side of the central axis relative to the first transmissive surface, a second reflective surface at the side opposite to the image plane relative to the first reflective surface and a second transmissive surface at the side of the image plane relative to the second reflective surface. The flux of light enters and proceeds through the transparent medium via the first transmissive surface, the first reflective surface, the second reflective surface and the second transmissive surface to form an optical path. The optical path is formed only at a side relative to the central axis.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: August 28, 2012
    Assignee: Olympus Corporation
    Inventor: Takayoshi Togino
  • Patent number: 8194332
    Abstract: A Fresnel optical element has a plurality of slopes that refract or reflect light, and the variation of the slope angle between adjacent slopes is constant.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: June 5, 2012
    Assignee: Olympus Corporation
    Inventors: Takayoshi Togino, Hisashi Ode
  • Patent number: 8072693
    Abstract: An optical system is adapted to form an image having a full 360° angle of view on an image plane. The optical system includes a front unit having at least two reflecting surfaces, each rotationally symmetric about a center axis, and a rear unit that is rotationally symmetric about the center axis and has positive power. The first reflecting surface is located opposite to an entrance pupil, and the second reflecting surface is located on the same side as the first reflecting surface. The entrance pupil in a section including the center axis is located between the outer periphery of the first reflecting surface and the outer periphery of the second reflecting surface. A light beam coming from afar passes through the front unit and the rear unit in order, forming an image at a position of an image plane off the center axis.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: December 6, 2011
    Assignee: Olympus Corporation
    Inventors: Takayoshi Togino, Shin Nakamura
  • Publication number: 20110285973
    Abstract: The projection optical apparatus of the invention comprises a projection optical system 13 for projection of an image displayed on a two-dimensional image display device 13b; a cylindrical screen 11 which is decentered with respect to the projection optical system 13 and onto which an image projected from the projection optical system 13 is projected; and a correction optical system 12 including an optical device 12a that has different powers in the direction (Y-axis direction) of the center axis of rotation of the cylindrical screen 11 and in the direction (X-axis direction) orthogonal to a first plane 101 including a center chief ray C of a light beam traveling from the projection optical system 13 toward the cylindrical screen 11.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 24, 2011
    Applicant: OLYMPUS CORPORATION
    Inventor: Takayoshi TOGINO
  • Publication number: 20110188126
    Abstract: The visual display apparatus of the invention has an image display device, a projection optical system for projection of an image displayed on the image display device, an eyepiece optical system of positive reflecting power that uses an image coming from afar as an image projected from the projection optical system, and a cylindrical or conical diffusing surface located near an image projected from the projection optical system. The image projected from the projection optical system is located in such a way as to draw a circular arc at any position in the plane orthogonal to the optical axis of the projection optical system.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 4, 2011
    Applicant: OLYMPUS CORPORATION
    Inventor: Takayoshi TOGINO
  • Publication number: 20110157709
    Abstract: In the visual display device of the present invention, the first reflection plane 11 is so disposed as to face the eye point 4 in order of an optical path of reverse tracing that extends from the eye point 4 to the two-dimensional image displaying plane 3; the second reflection plane 21 is so disposed as to face the two-dimensional image displaying plane 3, and an optical axis connecting the first reflection plane 11 to the eye point 4 is so disposed as to cross an optical axis connecting the second reflection plane 21 to the two-dimensional image displaying plane 3; both the first and second reflection planes 11 and 21 have positive power; and diopter difference S of the position of a virtual image associated with diopter is substantially equal to that of the position of a virtual image associated with convergence.
    Type: Application
    Filed: September 24, 2010
    Publication date: June 30, 2011
    Inventor: Takayoshi Togino