Patents by Inventor Rentaro Imai
Rentaro Imai 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).
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Patent number: 11877067Abstract: A shutter apparatus includes a front blade unit and a rear blade unit configured to open and close an opening for exposure control, a front drive member and a rear drive member configured to drive the front blade unit and the rear blade unit between an open position and a closed position of the opening, respectively, a front cam gear and a rear cam gear configured to charge the front drive member and the rear drive member, respectively, a front driving source and a rear driving source connected to and configured to rotate the front cam gear and the rear cam gear, respectively, and a controller configured to control the front driving source and the rear driving source based on an imaging condition so as to change driving times of the front blade unit and the rear blade unit.Type: GrantFiled: December 5, 2022Date of Patent: January 16, 2024Assignee: Canon Kabushiki KaishaInventors: Rentaro Imai, Jun Kawanami, Keisuke Adachi
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Publication number: 20230382401Abstract: An information processing apparatus is provided that executes instructions to acquire surrounding information or external information about a moving object, determine a riding state of a user with respect to the moving object based on the acquired information, determine, based on the user's riding state with respect to the moving object, information to be notified to the user from among the acquired information, and notify the determined information to the user.Type: ApplicationFiled: May 18, 2023Publication date: November 30, 2023Inventor: RENTARO IMAI
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Publication number: 20230114340Abstract: A camera that picks up an image behind a vehicle in order to display an image behind the vehicle on an electronic rear-view mirror and a monitor installed on the vehicle is provided with an optical system configured to have a high resolution region that has a high image-forming magnification and a peripheral region that is formed around the high resolution region and has a lower image-forming magnification than the high resolution region and to form an optical image on an image sensor; and an image pickup means configured to output an image based on an optical image formed on the image sensor, wherein the camera is arranged on the vehicle such that a ground surface that is behind and near the vehicle and the position 80 cm high from the ground surface is included within a second field range in which an image is formed on the image sensor via the second region of the optical system.Type: ApplicationFiled: October 6, 2022Publication date: April 13, 2023Inventor: Rentaro Imai
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Publication number: 20230095400Abstract: A shutter apparatus includes a front blade unit and a rear blade unit configured to open and close an opening for exposure control, a front drive member and a rear drive member configured to drive the front blade unit and the rear blade unit between an open position and a closed position of the opening, respectively, a front cam gear and a rear cam gear configured to charge the front drive member and the rear drive member, respectively, a front driving source and a rear driving source connected to and configured to rotate the front cam gear and the rear cam gear, respectively, and a controller configured to control the front driving source and the rear driving source based on an imaging condition so as to change driving times of the front blade unit and the rear blade unit.Type: ApplicationFiled: December 5, 2022Publication date: March 30, 2023Inventors: Rentaro Imai, Jun Kawanami, Keisuke Adachi
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Patent number: 11528425Abstract: A shutter apparatus includes a front blade unit and a rear blade unit configured to open and close an opening for exposure control, a front drive member and a rear drive member configured to drive the front blade unit and the rear blade unit between an open position and a closed position of the opening, respectively, a front cam gear and a rear cam gear configured to charge the front drive member and the rear drive member, respectively, a front driving source and a rear driving source connected to and configured to rotate the front cam gear and the rear cam gear, respectively, and a controller configured to control the front driving source and the rear driving source based on an imaging condition so as to change driving times of the front blade unit and the rear blade unit.Type: GrantFiled: March 22, 2021Date of Patent: December 13, 2022Assignee: Canon Kabushiki KaishaInventors: Rentaro Imai, Jun Kawanami, Keisuke Adachi
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Publication number: 20210306544Abstract: A shutter apparatus includes a front blade unit and a rear blade unit configured to open and close an opening for exposure control, a front drive member and a rear drive member configured to drive the front blade unit and the rear blade unit between an open position and a closed position of the opening, respectively, a front cam gear and a rear cam gear configured to charge the front drive member and the rear drive member, respectively, a front driving source and a rear driving source connected to and configured to rotate the front cam gear and the rear cam gear, respectively, and a controller configured to control the front driving source and the rear driving source based on an imaging condition so as to change driving times of the front blade unit and the rear blade unit.Type: ApplicationFiled: March 22, 2021Publication date: September 30, 2021Inventors: Rentaro Imai, Jun Kawanami, Keisuke Adachi
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Patent number: 10708513Abstract: A shutter apparatus includes a blade unit configured to open and close an opening used for exposure, a blade moving member configured to move the blade unit between an open position and a closed position of the opening, an urging member configured to urge at least one of the blade unit and the blade moving member in a direction from the closed position to the open position of the opening; and a blade cam member configured to contact the blade moving member as the blade unit moves from the closed position to the open position of the opening.Type: GrantFiled: December 3, 2018Date of Patent: July 7, 2020Assignee: CANON KABUSHIKI KAISHAInventor: Rentaro Imai
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Publication number: 20190199903Abstract: A shutter apparatus includes a blade unit configured to open and close an opening used for exposure, a blade moving member configured to move the blade unit between an open position and a closed position of the opening, an urging member configured to urge at least one of the blade unit and the blade moving member in a direction from the closed position to the open position of the opening; and a blade cam member configured to contact the blade moving member as the blade unit moves from the closed position to the open position of the opening.Type: ApplicationFiled: December 3, 2018Publication date: June 27, 2019Inventor: Rentaro Imai
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Patent number: 9733548Abstract: The focal-plane shutter includes a blade drive member, an acceleration member providing a driving force to the drive member, and a lock member reducing bounce of the drive member after blade movement completion and being movable between a first position where a stopper portion thereof enters a movable area of a contact portion of the drive member and a second position where the stopper portion is located outside the movable area. During the blade movement, the contact portion pushes the lock member to move it from the first to second position. Before the blade movement completion, the contact portion is away from the lock member and thereby the lock member is moved from the second to first position by a biasing force. After the completion, the acceleration member pushes the lock member to move it from the first to second position.Type: GrantFiled: April 7, 2016Date of Patent: August 15, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Rentaro Imai, Toru Kawashima
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Publication number: 20160299407Abstract: The focal-plane shutter includes a blade drive member, an acceleration member providing a driving force to the drive member, and a lock member reducing bounce of the drive member after blade movement completion and being movable between a first position where a stopper portion thereof enters a movable area of a contact portion of the drive member and a second position where the stopper portion is located outside the movable area. During the blade movement, the contact portion pushes the lock member to move it from the first to second position. Before the blade movement completion, the contact portion is away from the lock member and thereby the lock member is moved from the second to first position by a biasing force. After the completion, the acceleration member pushes the lock member to move it from the first to second position.Type: ApplicationFiled: April 7, 2016Publication date: October 13, 2016Inventors: Rentaro Imai, Toru Kawashima
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Patent number: 8596893Abstract: When a blade drive spring has been overcharged when a second cam gear has caused a drive lever to move to a position beyond a position of attraction of an armature by a yoke, a blade lever does not contact the drive lever even if the blade lever has been driven in a direction of opening an aperture by a first blade and a second blade with an urging force of a blade return spring. When the second cam gear has moved to the attraction position form the overcharged position, the blade lever contacts the drive lever before the yoke starts attracting the armature by the attractive force.Type: GrantFiled: November 22, 2011Date of Patent: December 3, 2013Assignee: Canon Kabushiki KaishaInventors: Tetsuya Nishio, Rentaro Imai
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Publication number: 20120128345Abstract: When a blade drive spring has been overcharged when a second cam gear has caused a drive lever to move to a position beyond a position of attraction of an armature by a yoke, a blade lever does not contact the drive lever even if the blade lever has been driven in a direction of opening an aperture by a first blade and a second blade with an urging force of a blade return spring. When the second cam gear has moved to the attraction position form the overcharged position, the blade lever contacts the drive lever before the yoke starts attracting the armature by the attractive force.Type: ApplicationFiled: November 22, 2011Publication date: May 24, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuya Nishio, Rentaro Imai