Patents by Inventor Makoto Oikawa

Makoto Oikawa 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: 20240075665
    Abstract: A molded resin product includes a plurality of protrusions formed in a predetermined region. A histogram indicating a height distribution of the plurality of protrusions has two peaks having a boundary height as a boundary therebetween. In a case where protrusions having height equal to or smaller than the height Hx are first protrusions and protrusions having height larger than the boundary height are second protrusions among the plurality of protrusions, an arithmetic mean curvature of the first protrusions is smaller than an arithmetic mean curvature of the second protrusions.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 7, 2024
    Inventors: Toshimitsu Nagoya, Kei Oikawa, Makoto Kojima, Takahiro Suzuki, Mao Mukaida
  • Patent number: 11740478
    Abstract: A display unit and a lens included in a display device constitute a plurality of display optical systems that display a video for each of a user's left eye and right eye. The display device includes a diopter change instruction unit and a diopter change driving unit that can change a diopter related to the plurality of display optical systems, and an object position calculation unit that calculates an object position of a display object in a video. The diopter change instruction unit gives a driving instruction to the diopter change driving unit on the basis of information acquired from a user information recording unit and an operation mode recording unit that record information on usage conditions of the display device.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: August 29, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kyouhei Suzuki, Ryo Yamasaki, Makoto Oikawa, Shunsuke Ninomiya
  • Publication number: 20230247270
    Abstract: A driving apparatus includes a fixed unit, a first movable unit held rotatably about a first axis relative to the fixed unit, a second movable unit held rotatably about a second axis different from the first axis relative to the first movable unit, a bearing configured to support the first movable unit rotatably about the first axis relative to the fixed unit, a first wiring having one end connected to the fixed unit and another end connected to the first movable unit, and a second wiring having one end connected to the fixed unit and another end connected to one of the first movable unit and the second movable unit. The first wiring includes a wound portion wound around the first axis and provided outside the bearing in a radial direction of the bearing. The second wiring is inserted inside the bearing.
    Type: Application
    Filed: January 23, 2023
    Publication date: August 3, 2023
    Inventors: Shunsuke NINOMIYA, Ryo YAMASAKI, Makoto OIKAWA, Kyouhei SUZUKI
  • Patent number: 11681119
    Abstract: An optical driving apparatus includes a holder configured to hold an optical element and including a first contact portion and a second contact portion that are spaced from each other in an optical axis direction, a guide member configured to contact the first contact portion and the second contact portion and to guide the holder in the optical axis direction, and a biasing member configured to generate a biasing force serving as a magnetic force configured to bias the holder so that the first contact portion and the second contact portion are pressed against the guide member. The biasing member is disposed between the first contact portion and the second contact portion in the optical axis direction.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: June 20, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Makoto Oikawa
  • Publication number: 20230068868
    Abstract: A display unit and a lens included in a display device constitute a plurality of display optical systems that display a video for each of a user's left eye and right eye. The display device includes a diopter change instruction unit and a diopter change driving unit that can change a diopter related to the plurality of display optical systems, and an object position calculation unit that calculates an object position of a display object in a video. The diopter change instruction unit gives a driving instruction to the diopter change driving unit on the basis of information acquired from a user information recording unit and an operation mode recording unit that record information on usage conditions of the display device.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 2, 2023
    Inventors: Kyouhei Suzuki, Ryo Yamasaki, Makoto Oikawa, Shunsuke Ninomiya
  • Publication number: 20230066962
    Abstract: A display device includes a pair of display units each including displays 1R and 1L and ocular optical systems 2R and 2L. A first driving unit can change an optical positional relationship between the displays 1R and 1L and the ocular optical systems 2R and 2L. A second driving unit can change an interval between the pair of display units. An interpupillary distance adjustment unit adjusts the interval between the display units by the second driving unit in accordance with a detection result obtained by the interpupillary distance detector. After interpupillary distance adjustment is performed, a diopter adjustment unit performs diopter adjustment related to the display unit by the first driving unit.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 2, 2023
    Inventors: Makoto Oikawa, Ryo Yamasaki, Kyouhei Suzuki, Shunsuke Ninomiya
  • Patent number: 11442242
    Abstract: Provided is a vibration wave motor including: a vibrator; a friction member; a pressurizing mechanism; a first holding mechanism; and a second holding mechanism, wherein the vibrator and the friction member are configured to perform relative movement with respect to each other, wherein the first holding mechanism includes a first holding portion and a second holding portion which is longer than the first holding portion in a direction of the relative movement, wherein the friction member is arranged between the first holding portion and the second holding portion, wherein the first holding portion includes a first restriction portion, wherein the second holding portion includes a second restriction portion, and wherein the first restriction portion and the second restriction portion are brought into abutment against the second holding mechanism to restrict movement in directions other than the direction of the relative movement of the vibrator and the first holding mechanism.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: September 13, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryo Abe, Makoto Oikawa, Yasufumi Yamamoto
  • Patent number: 11437934
    Abstract: Provided is a vibration wave motor including: a vibrator; a friction member configured to be brought into frictional contact with the vibrator; a first holding member holding the vibrator; a second holding member holding the first holding member; and a third holding member holding the second holding member, wherein the vibrator and the friction member move relative to each other, and wherein one side of the second holding member is configured to connect to the first holding member or the third holding member at a position where the second holding member overlaps the rectangular shape portion in a direction of the relative movement, and another side of the second holding member is configured to connect to the first holding member or the third holding member at a position where the second holding member overlaps the rectangular shape portion in a direction perpendicular to the direction of the relative movement.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: September 6, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Yamamoto, Makoto Oikawa, Ryo Abe
  • Patent number: 11381177
    Abstract: Provided is a vibration wave motor, including: a vibrator including a piezoelectric element and a vibrating plate; a friction member, which includes a friction-contact surface to be brought into contact with the vibrator, and is configured to perform relative movement with respect to the vibrator by vibration generated by the vibrator; and a guide mechanism, which includes a first guide member, a second guide member, and a rolling member arranged between the first guide member and the second guide member, and is configured to guide the relative movement, wherein the first guide member includes a groove portion formed of a first surface and a second surface to be brought into contact with the rolling member, and wherein the first surface is longer than the second surface in a direction of the relative movement.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: July 5, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenta Takai, Ryo Yamasaki, Makoto Oikawa, Kazuharu Osawa, Shunsuke Ninomiya, Ryo Abe
  • Patent number: 11283370
    Abstract: Provided is a vibration wave motor, including: a vibrator; a friction member, which is in friction contact with the vibrator; a pressurizing unit, which is configured to pressurize the vibrator against the friction member; and a guiding unit, which is configured to guide relative movement between the vibrator and the friction member, wherein the relative movement between the vibrator and the friction member is caused by vibration generated by the vibrator, and wherein the guiding unit holds the friction member and has fixing portions, and the fixing portions are formed in the guiding unit in vicinities of both ends of the guiding unit sandwiching the friction member.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 22, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Yamasaki, Makoto Oikawa, Kazuharu Osawa, Shunsuke Ninomiya, Ryo Abe, Kenta Takai
  • Patent number: 11245343
    Abstract: A vibration wave motor includes a vibrator, a friction member having a sliding surface, a guide member, a flexible substrate, and a fixing member configured to fix the friction member, the guide member, and the flexible substrate. The vibrator and the friction member move relative to each other in a predetermined direction. The fixing member includes a substrate-fixing portion configured to fix the flexible substrate, which includes a joint portion, an extending portion extending along the predetermined direction, a bent portion configured to reverse and turn back the extending portion, and a fixed portion to be fixed to the substrate-fixing portion. The flexible substrate is fixed on a surface of the substrate-fixing portion provided in a direction opposite to a direction in which the vibrator is brought into pressure-contact with the friction member.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: February 8, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Oikawa, Ryo Yamasaki, Kazuharu Osawa, Shunsuke Ninomiya, Ryo Abe, Kenta Takai
  • Patent number: 11190112
    Abstract: A vibration wave motor includes a first holding member; a second holding member; a first regulating region; and a second regulating region, wherein a position of a first contact region of the first holding member, which comes into contact with the first regulating region, is different from a position of a second contact region of the second holding member, which comes into contact with the second regulating region, and wherein a position of the first regulating region is different from a position of the second regulating region in the relative movement direction so that, in the relative movement direction, a difference between a distance from the first contact region to the first regulating region and a distance from the second contact region to the second regulating region is shorter than a difference between the position of the first contact region and the position of the second contact region.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: November 30, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunsuke Ninomiya, Ryo Yamasaki, Makoto Oikawa, Kazuharu Osawa, Ryo Abe, Kenta Takai
  • Patent number: 11128239
    Abstract: Provided is a vibration wave motor including: a vibrator; a friction member that comes into frictional contact with the vibrator; a press member that pressurizes the vibrator and the friction member into frictional contact with each other; a first guide member and a second guide member that guide the vibrator and the friction member so as to allow relative movement of the vibrator and the friction member; a hold member that holds the friction member and the first guide member; and a fixing member. The friction member and the first guide member are fixed to the hold member with the fixing member.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: September 21, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Abe, Ryo Yamasaki, Makoto Oikawa, Kazuharu Osawa, Shunsuke Ninomiya, Kenta Takai
  • Publication number: 20210255419
    Abstract: An optical driving apparatus includes a holder configured to hold an optical element and including a first contact portion and a second contact portion that are spaced from each other in an optical axis direction, a guide member configured to contact the first contact portion and the second contact portion and to guide the holder in the optical axis direction, and a biasing member configured to generate a biasing force serving as a magnetic force configured to bias the holder so that the first contact portion and the second contact portion are pressed against the guide member. The biasing member is disposed between the first contact portion and the second contact portion in the optical axis direction.
    Type: Application
    Filed: February 17, 2021
    Publication date: August 19, 2021
    Inventor: Makoto Oikawa
  • Publication number: 20210257937
    Abstract: A vibration type motor includes a vibration plate configured to vibrate by a piezoelectric element, a friction member including a contact surface for the vibration plate, and configured to move relative to the vibration plate as the vibration plate vibrates, and an adhesive member provided on the contact surface of the friction member. The vibration plate includes a protrusion that protrudes toward a side opposite to the piezoelectric element. The protrusion includes a sidewall portion, at least one contact portion that contacts the contact surface, and a flat portion provided between the contact portion and the sidewall portion. The adhesive member has an opening that avoids a moving range of the contact portion. The opening in the adhesive member is located outside the sidewall portion.
    Type: Application
    Filed: February 17, 2021
    Publication date: August 19, 2021
    Inventor: Makoto Oikawa
  • Patent number: 10972019
    Abstract: An ultrasonic motor includes a vibrator configured to generate a vibration, a relatively movable member configured to be movable by the vibrator, wherein the relatively movable member is movable relatively according to the vibration of the vibrator, a holding unit configured to hold the vibrator, wherein the holding unit includes a first holding member configured to hold the vibrator and a second holding member; and a damping member provided between the vibrator and the second holding member and configured to reduce a vibration transmitted to the second holding member, a pressure unit configured to press the vibrator against the relatively movable member, wherein the second holding member is configured to press the vibrator against the relatively movable member, and wherein the first holding member is made of a material having a higher damping capability against the vibrator than a material of the second holding member.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 6, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Yamasaki, Makoto Oikawa
  • Patent number: 10757349
    Abstract: According to the present invention, an imaging device and a reproducing device that allow for high quality reproduction of images generated by using two image signals having different lengths of accumulation periods output form a single imaging element are provided. A solid state imaging device of the invention includes a pixel array including a pixel having first and second photoelectric conversion units; a scanning unit that drives the pixel such that an accumulation period of an intermediate time of the first photoelectric conversion unit matches an intermediate time of an accumulation period of the second photoelectric conversion unit; a readout unit that reads out a first image signal from the first photoelectric conversion unit and reads out a second image signal from the second photoelectric conversion unit; and a generating unit that generates images by using the first and second image signals whose accumulation periods have the matched intermediate time.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: August 25, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Fumihiro Kajimura, Yasuo Suda, Koichi Washisu, Akihiko Nagano, Ryo Yamasaki, Masafumi Kimura, Makoto Oikawa, Go Naito
  • Patent number: 10748338
    Abstract: An index extraction unit detects indices from a sensed image sensed by a sensing unit which senses an image of a physical space on which a plurality of indices is laid out. A convergence arithmetic unit calculates position and orientation information of the sensing unit based on the detected indices. A CG rendering unit generates a virtual space image based on the position and orientation information. A sensed image clipping unit extracts, as a display image, an image in a display target region from the sensed image. An image composition unit generates a composite image by compositing the extracted display image and the generated virtual space image. A display unit displays the composite image.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 18, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Oikawa, Takuya Tsujimoto
  • Publication number: 20200136528
    Abstract: Provided is a vibration wave motor including: a vibrator; a friction member configured to be brought into frictional contact with the vibrator; a first holding member holding the vibrator; a second holding member holding the first holding member; and a third holding member holding the second holding member, wherein the vibrator and the friction member move relative to each other, and wherein one side of the second holding member is configured to connect to the first holding member or the third holding member at a position where the second holding member overlaps the rectangular shape portion in a direction of the relative movement, and another side of the second holding member is configured to connect to the first holding member or the third holding member at a position where the second holding member overlaps the rectangular shape portion in a direction perpendicular to the direction of the relative movement.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 30, 2020
    Inventors: Yasufumi Yamamoto, Makoto Oikawa, Ryo Abe
  • Publication number: 20200110244
    Abstract: Provided is a vibration wave motor including: a vibrator; a friction member; a pressurizing mechanism; a first holding mechanism; and a second holding mechanism, wherein the vibrator and the friction member are configured to perform relative movement with respect to each other, wherein the first holding mechanism includes a first holding portion and a second holding portion which is longer than the first holding portion in a direction of the relative movement, wherein the friction member is arranged between the first holding portion and the second holding portion, wherein the first holding portion includes a first restriction portion, wherein the second holding portion includes a second restriction portion, and wherein the first restriction portion and the second restriction portion are brought into abutment against the second holding mechanism to restrict movement in directions other than the direction of the relative movement of the vibrator and the first holding mechanism.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 9, 2020
    Inventors: Ryo Abe, Makoto Oikawa, Yasufumi Yamamoto