Patents by Inventor Shigeo Enomoto

Shigeo Enomoto 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).

  • Publication number: 20050052570
    Abstract: An imaging device comprises a photographing optical system fixed to a stationary portion, an imaging-device board, a movable frame enclosing the photographing optical system, a pair of first support plates, and a pair of second support plates. The first support plates are disposed parallel to each other with respect to the optical axis of the photographing optical system. Rear-end and front-end portions of the first support plates are fixed to the stationary portion and the movable frame. The pair of second support plates are disposed parallel to each other with respect to the optical axis, and perpendicular to the pair of first support plates. Front-end and rear-end portions of the second support plates are connected to the movable frame and the imaging-device board. The first and second support plates are inclined so that the imaging-device board can be displaced, relative to the stationary portion.
    Type: Application
    Filed: August 20, 2004
    Publication date: March 10, 2005
    Applicant: PENTAX Corporation
    Inventor: Shigeo Enomoto
  • Publication number: 20040036781
    Abstract: A digital camera comprises a solid state imaging device provided with an optical low-pass filter. A photographing optical system forms an object image on a light receiving surface of a CCD through the optical low-pass filter. An electronic-charge accumulation-time control program is stored in a ROM of a system control circuit to determine optimum exposure parameters according to which a photography is performed. The electronic-charge accumulation-time control program has a program diagram showing a relationship between an electronic-charge accumulation-time and an aperture value and/or an ISO speed.
    Type: Application
    Filed: August 21, 2003
    Publication date: February 26, 2004
    Applicant: PENTAX Corporation
    Inventor: Shigeo Enomoto
  • Publication number: 20030190163
    Abstract: An observation optical device with a photographing function comprises a photographing optical system, a telescopic optical system, and a solid-state imaging device disposed on the optical axis of the photographing optical system. The photographing optical system forms an image. The telescopic optical system can function as a viewfinder optical system for the photographing optical system. The solid-state imaging device photoelectrically converts the image into an image signal, and outputs the image signal in the progressive-scan method.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 9, 2003
    Applicant: PENTAX Corporation
    Inventors: Ken Hirunuma, Shigeo Enomoto, Atsumi Kaneko
  • Patent number: 6606457
    Abstract: A first rotating board is supported on a fixed member, being rotatable around a first pivot shaft. A second rotating board is supported on the first rotating board, being rotatable around a second pivot shaft. The first and second rotating boards are respectively rotated by first and second driving mechanisms. A lens holding member, which holds a correction lens, is fixed at an opening portion of the second rotating board. The lens holding member pierces through opening portions of the fixed member and the first rotating board. The first and second driving mechanisms are controlled such that a focused image tremble can be canceled by a combination of the displacement of the correction lens due to the rotation of the first rotating board and the displacement of the correction lens due to the rotation of the second rotating board.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: August 12, 2003
    Assignee: Pentax Corporation
    Inventor: Shigeo Enomoto
  • Patent number: 6603927
    Abstract: A correction lens is supported in a generally cylindrical supporting member such that its optical axis is coaxial with the central axis of the supporting member. A flange is formed on an outer surface of the supporting member. A first opening is formed in a first rotating board, and a second opening is formed in a second rotating board. First and second cylindrical portions at both end sides of the supporting member respectively penetrate through the first and second openings. The flange is positioned between the first and second rotating boards. When the first rotating board is rotated, the first cylindrical portion is supported by the upper and lower sides of the first opening and is led by the second opening. When the second rotating board is rotated, the second cylindrical portion is supported by left and right sides of the second opening and is led by the first opening.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: August 5, 2003
    Assignee: Pentax Corporation
    Inventor: Shigeo Enomoto
  • Patent number: 6567615
    Abstract: When an exposure of a film is started, the A/D conversion of angular speed signals output from the X-axis direction and Y-axis direction sensors and the storing of these digitalized angular speed signals to a memory are repeated at predetermined intervals. After the exposure time has elapsed, the A/D conversion and the storing are stopped, and the film is wound by one frame. Angular data are calculated by integrating the digitalized angular speed signals, and a tremble amount is calculated based on the angular data and a focal length of a photographing optical system. The tremble amount is compared with a permissible amount. If the tremble amount exceeds the permissible amount, the exposure is repeated. The photographing is repeated until the tremble amount becomes less than or equal to the permissible amount.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: May 20, 2003
    Assignee: Pentax Corporation
    Inventor: Shigeo Enomoto
  • Publication number: 20030063209
    Abstract: In an optical viewer instrument with a photographing function, a telescopic lens system is used for observing an object, and a digital camera is used for photographing an object. The digital camera includes a CCD image sensor and a photographing lens system associated with each other such that the object is formed as a photographic image on the sensor through the photographing lens system. An automatically-operable focussing mechanism is associated with the photographing lens system such that the object is brought into focus through the telescopic lens system, and such that the object is brought into focus through the photographing lens system. Optical various parameters are selected such that predetermined conditions are fulfilled, whereby the focussing of the photographing lens system can be suitably and properly performed in an automatic focussing manner.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 3, 2003
    Applicant: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Shigeo Enomoto, Shuji Yoneyama
  • Publication number: 20030044175
    Abstract: A correction lens is supported in a generally cylindrical supporting member such that its optical axis is coaxial with the central axis of the supporting member. A flange is formed on an outer surface of the supporting member. A first opening is formed in a first rotating board, and a second opening is formed in a second rotating board. First and second cylindrical portions at both end sides of the supporting member respectively penetrate through the first and second openings. The flange is positioned between the first and second rotating boards. When the first rotating board is rotated, the first cylindrical portion is supported by the upper and lower sides of the first opening and is led by the second opening. When the second rotating board is rotated, the second cylindrical portion is supported by left and right sides of the second opening and is led by the first opening.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 6, 2003
    Applicant: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shigeo Enomoto
  • Publication number: 20030007794
    Abstract: A first rotating board is supported on a fixed member, being rotatable around a first pivot shaft. A second rotating board is supported on the first rotating board, being rotatable around a second pivot shaft. The first and second rotating boards are respectively rotated by first and second driving mechanisms. A lens holding member, which holds a correction lens, is fixed at an opening portion of the second rotating board. The lens holding member pierces through opening portions of the fixed member and the first rotating board. The first and second driving mechanisms are controlled such that a focused image tremble can be canceled by a combination of the displacement of the correction lens due to the rotation of the first rotating board and the displacement of the correction lens due to the rotation of the second rotating board.
    Type: Application
    Filed: June 18, 2002
    Publication date: January 9, 2003
    Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    Inventor: Shigeo Enomoto
  • Publication number: 20020127011
    Abstract: When an exposure of a film is started, the A/D conversion of angular speed signals output from the X-axis direction and Y-axis direction sensors and the storing of these digitalized angular speed signals to a memory are repeated at predetermined intervals. After the exposure time has elapsed, the A/D conversion and the storing are stopped, and the film is wound by one frame. Angular data are calculated by integrating the digitalized angular speed signals, and a tremble amount is calculated based on the angular data and a focal length of a photographing optical system. The tremble amount is compared with a permissible amount. If the tremble amount exceeds the permissible amount, the exposure is repeated. The photographing is repeated until the tremble amount becomes less than or equal to the permissible amount.
    Type: Application
    Filed: March 7, 2002
    Publication date: September 12, 2002
    Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    Inventor: Shigeo Enomoto
  • Patent number: 6226124
    Abstract: An angular positional data of binoculars in a lateral irection is calculated by integrating output of a gyro sensor. A positional data of correction lenses in the lateral direction is calculated by multiplying a driving step number of a rotor of a stepping motor which drives the correction lenses in the lateral direction, by a driving amount of the lens holding frame, which holds the correction lens, according to a one step rotation of the stepping motor. A difference between the angular positional data and the positional data of the correction lenses is calculated. If the difference is within a range from a positive threshold value to a negative threshold value, an electric power supply to a driving circuit of the stepping motor is stopped. With respect to a lengthwise direction, a similar operation to that of the lateral direction is performed.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: May 1, 2001
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Shigeo Enomoto, Shinji Tsukamoto
  • Patent number: 6127667
    Abstract: An angular speed of an optical axis of an optical device is detected by a gyro sensor, and inputted to a first A/D converting input terminal of a CPU. A position data of a correction optical system is sensed by a PSD, and inputted to a second A/D converting input terminal of the CPU. The inputted data both of the first and the second A/D converting input terminals is converted to a digital signal. The digital signal of the angular speed is stored in an integration register. The digital signal of the position data is stored in a correction optical system position register. When a trembling speed of a focused image changes from a speed higher than a maximum driving speed of the correction optical system to a speed lower than the maximum speed, the data stored in the correction optical system position register is copied to the integration register.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: October 3, 2000
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shigeo Enomoto
  • Patent number: 6128442
    Abstract: A trembling compensation and control apparatus detects an angular displacement of an optical axis of a focusing optical system and drives and controls an compensation optical system so as to compensate for trembling of a camera. The angular displacement of the optical axis of the focusing optical system is detected by an angular velocity sensor. A low-cut filter is provided that processes and calculates an angular displacement velocity signal output from the angular velocity sensor. The low-cut filter cuts a low frequency component from the angular displacement velocity signal and outputs a valid angular displacement velocity signal. The valid angular displacement velocity signal is converted by an integration portion into an angular displacement signal. A level detector is further disposed for detecting the valid angular displacement velocity signal.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: October 3, 2000
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shigeo Enomoto
  • Patent number: 6078436
    Abstract: A pair of correction lenses is unitarily held by a holding plate in binoculars. The direction and the amount of the movement of the focused image occurring due to hand tremble while utilizing hand-held binoculars, are detected. The holding plate is driven in the vertical and horizontal directions, so that the direction and the magnitude of the movement of the focused image are canceled by the correction lenses.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: June 20, 2000
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Ken Hirunuma, Shinji Tsukamoto, Shigeo Enomoto
  • Patent number: 6064532
    Abstract: Binoculars are provided with correction lenses which correct a trembling of a focused image. The correction lenses are driven by stepping motors. The difference between an angular position data of optical axes of the binoculars and a driving amount of the correction lenses driven by the stepping motors is calculated. If the difference exceeds a positive threshold value, the stepping motor is rotated clockwise, and if the difference is below a negative threshold value, the stepping motor is rotated counterclockwise in order to cancel the difference. When the difference is between the positive threshold value and the negative threshold value, the stepping motor is not rotated. The threshold value is determined to be a quarter of the driving amount of the correction lenses, which corresponds to one rotational step of the stepping motor.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: May 16, 2000
    Assignee: Asahi Kogaku Kabushiki Kaisha
    Inventor: Shigeo Enomoto
  • Patent number: 5995762
    Abstract: At least one lens is held by a lens holding plate. The lens holding plate is driven along two axes, crossing at right angles, which are perpendicular to an optical axis of the lens, by direct-drive-type actuators. The direct-drive-type actuators are respectively disposed in recessed portions which are formed in the lens holding plate, such that movable portions of the direct-drive-type actuators are in slidable contact with internal surfaces of the recessed portions.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: November 30, 1999
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Shigeo Enomoto, Shinji Tsukamoto, Ken Hirunuma
  • Patent number: 5655157
    Abstract: A blur correcting apparatus of a camera having a photographing optical system. A blur correcting optical system is coaxially provided in an optical axis of a photographing optical system and is supported in a manner such that the blur correcting optical system is movable in a plane normal to the optical axis. The blur correcting optical system is moved in a controlled manner with respect to the photographing optical system. The movement start time and the movement finish time of the moving of the blur correcting optical system are alterable.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: August 5, 1997
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shigeo Enomoto
  • Patent number: 5583597
    Abstract: A blur correcting apparatus for a camera which includes a shake detecting mechanism and a blur correcting optical element which is movable in a plane normal to the optical axis of the camera. Also included are a mechanism for filtering the output of the shake detecting mechanism, a mechanism for moving the blur correcting optical element based upon the output of the filtering mechanism, and a mechanism for switching the frequency range to be filtered from the output of the shake detecting mechanism by the filtering mechanism before and after activation of the shutter release switch of the camera.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: December 10, 1996
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shigeo Enomoto
  • Patent number: 5541693
    Abstract: A blur correcting apparatus of a camera having a photographing lens system, in which a blur correcting optical element is provided on an optical axis of the photographing lens system. The blur correcting optical element is movable in a direction normal to the optical axis. A camera shake detecting sensor detects an angular acceleration applied to the camera. A blur correcting optical element mover moves the blur correcting optical element so that an object image formed on a focal plane by the photographing optical system will not move with respect to the focal plane, in accordance with an output of the camera shake detecting sensor. The blur correcting optical element mover moves the blur correcting optical element in a first step and a second step, the first step being executed after a shutter release switch is pressed and before the shutter is actuated, and the second step being executed while the shutter is actuated.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: July 30, 1996
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shigeo Enomoto
  • Patent number: 5305040
    Abstract: A blur correcting lens driving apparatus of a camera in which a blur correcting lens is moved in a direction to eliminate a displacement, due to a camera shake, of an object image on a film plane, including a first rotary disk rotatably mounted to a stationary member of the camera to rotate about a first shaft parallel with an optical axis of the camera, a second rotary disk rotatably mounted to the first rotary disk to rotate about a second shaft parallel with the optical axis, a first motor provided on the stationary member of the camera to drive the first rotary disk about the first shaft, and a second motor provided on the first rotary disk to drive the second rotary disk about the second shaft.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: April 19, 1994
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shigeo Enomoto