Patents by Inventor Jun Kawanami
Jun Kawanami 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: 11895388Abstract: A shutter unit includes a base plate having an opening, a first blade member movable between a closed state and a retracted state, a first driving member biased by a first biasing member, a second driving member biased by a second biasing member, a first charging member configured to cause the first driving member to move in the second direction against a biasing force, a second charging member configured to cause the second driving member to move in the first direction against a biasing force, and a motor configured to supply a driving force to the first and second charging members. In a case where the first charging member causes the first driving member to move, the motor rotates in a direction opposite to a rotation direction in a case where the second charging member causes the second driving member to move.Type: GrantFiled: July 12, 2022Date of Patent: February 6, 2024Assignee: Canon Kabushiki KaishaInventors: Keisuke Adachi, Yuji Ueda, Jun Kawanami, Yoshiyuki Matsumoto
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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: 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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Publication number: 20230016129Abstract: A shutter unit includes a base plate having an opening, a first blade member movable between a closed state and a retracted state, a first driving member biased by a first biasing member, a second driving member biased by a second biasing member, a first charging member configured to cause the first driving member to move in the second direction against a biasing force, a second charging member configured to cause the second driving member to move in the first direction against a biasing force, and a motor configured to supply a driving force to the first and second charging members. In a case where the first charging member causes the first driving member to move, the motor rotates in a direction opposite to a rotation direction in a case where the second charging member causes the second driving member to move.Type: ApplicationFiled: July 12, 2022Publication date: January 19, 2023Inventors: Keisuke Adachi, Yuji Ueda, Jun Kawanami, Yoshiyuki Matsumoto
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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: 8834043Abstract: A shutter apparatus includes a shutter base plate having an aperture, a blade group configured to open and close the aperture, a blade driving member configured to drive the blade group, a charge lever configured to rotate the blade driving member, a first roller which is attached to a first axis portion extending from the blade driving member and abuts against the charge lever, a cam member configured to rotate the charge lever, and a second roller which is attached to a second axis portion extending from the charge lever and is configured to trace a cam portion formed on the cam member. The cam member has a flange protruding from the cam portion to periphery of the cam member. And the cam member is arranged so that the second roller is overlapped with the flange in an extending direction of the second axis portion.Type: GrantFiled: June 19, 2013Date of Patent: September 16, 2014Assignees: Canon Kabushiki Kaisha, Canon Denshi Kabushiki KaishaInventors: Yuuki Niwamae, Jun Kawanami, Koichi Shimada, Yoshihiro Sekiya
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Publication number: 20130343744Abstract: A shutter apparatus includes a shutter base plate having an aperture, a blade group configured to open and close the aperture, a blade driving member configured to drive the blade group, a charge lever configured to rotate the blade driving member, a first roller which is attached to a first axis portion extending from the blade driving member and abuts against the charge lever, a cam member configured to rotate the charge lever, and a second roller which is attached to a second axis portion extending from the charge lever and is configured to trace a cam portion formed on the cam member. The cam member has a flange protruding from the cam portion to periphery of the cam member. And the cam member is arranged so that the second roller is overlapped with the flange in an extending direction of the second axis portion.Type: ApplicationFiled: June 19, 2013Publication date: December 26, 2013Inventors: Yuuki Niwamae, Jun Kawanami, Koichi Shimada, Yoshihiro Sekiya
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Patent number: 8165464Abstract: An image pickup apparatus with an AF sensor unit fixed thereto promptly with high precision by a parallax adjustment method. The image pickup apparatus with the AF sensor has a stationary cylinder. The stationary cylinder constitutes an image pickup lens barrel with a first axis and a second axis that are perpendicular to an optical axis of the lens barrel and are perpendicular to each other. An AF sensor holder is configured to hold said AF sensor. An AF sensor holder-mounting unit is mounted on the stationary cylinder through a first axis rotation-adjusting mechanism rotatably with respect to the first axis, and configured to support said AF sensor holder through a second axis rotation-adjusting mechanism rotatably with respect to the second axis. The first axis rotation-adjusting mechanism and the second axis rotation-adjusting mechanism are directed in the same direction at operation sides thereof, respectively.Type: GrantFiled: December 17, 2010Date of Patent: April 24, 2012Assignee: Canon Kabushiki KaishaInventor: Jun Kawanami
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Publication number: 20110150444Abstract: An image pickup apparatus with an AF sensor unit fixed thereto promptly with high precision by a parallax adjustment method. The image pickup apparatus with the AF sensor has a stationary cylinder. The stationary cylinder constitutes an image pickup lens barrel with a first axis and a second axis that are perpendicular to an optical axis of the lens barrel and are perpendicular to each other. An AF sensor holder is configured to hold said AF sensor. An AF sensor holder-mounting unit is mounted on the stationary cylinder through a first axis rotation-adjusting mechanism rotatably with respect to the first axis, and configured to support said AF sensor holder through a second axis rotation-adjusting mechanism rotatably with respect to the second axis. The first axis rotation-adjusting mechanism and the second axis rotation-adjusting mechanism are directed in the same direction at operation sides thereof, respectively.Type: ApplicationFiled: December 17, 2010Publication date: June 23, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Jun Kawanami