Patents by Inventor Arata Kasamatsu
Arata Kasamatsu 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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Publication number: 20220360200Abstract: A camera module includes a lens, a first magnet and a second magnet mounted on a mobile body including the lens, a coil portion arranged near the first magnet and configured to move the first magnet in a first direction, and the magnetic sensor arranged near the second magnet and configured to detect the position of the second magnet in the first direction as a detection direction.Type: ApplicationFiled: July 19, 2022Publication date: November 10, 2022Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Takahiro I, Arata KASAMATSU
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Patent number: 11431269Abstract: A camera module includes a lens, a first magnet and a second magnet mounted on a mobile body including the lens, a coil portion arranged near the first magnet and configured to move the first magnet in a first direction, and the magnetic sensor arranged near the second magnet and configured to detect the position of the second magnet in the first direction as a detection direction.Type: GrantFiled: November 13, 2019Date of Patent: August 30, 2022Assignee: Asahi Kasei Microdevices CorporationInventors: Takahiro I, Arata Kasamatsu
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Patent number: 10674070Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.Type: GrantFiled: October 25, 2018Date of Patent: June 2, 2020Assignee: Asahi Kasei Microdevices CorporationInventors: Arata Kasamatsu, Kazuomi Isogai
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Publication number: 20200153366Abstract: A camera module includes a lens, a first magnet and a second magnet mounted on a mobile body including the lens, a coil portion arranged near the first magnet and configured to move the first magnet in a first direction, and the magnetic sensor arranged near the second magnet and configured to detect the position of the second magnet in the first direction as a detection direction.Type: ApplicationFiled: November 13, 2019Publication date: May 14, 2020Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Takahiro I, Arata KASAMATSU
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Patent number: 10613342Abstract: The present invention relates to an image stabilizer and a camera module. The image stabilizer for a lens that moves, with respect to an imaging element, in an auto-focus direction and a camera shake direction, includes a first position sensor, a distance signal calculation unit, a target position signal calculation circuit and a drive signal generation unit. A first detection position signal that indicates a position of the lens that moves in the camera shake direction, a second detection position signal that indicates a position of the lens that moves in the auto-focus direction, and an angular velocity signal that indicate an angular velocity when the lens is inclined from the optical axis direction to output a drive signal. A drive unit moves the lens in the camera shake direction depending on the drive signal.Type: GrantFiled: December 5, 2014Date of Patent: April 7, 2020Assignee: Asahi Kasei Microdevices CorporationInventor: Arata Kasamatsu
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Publication number: 20190068871Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.Type: ApplicationFiled: October 25, 2018Publication date: February 28, 2019Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Arata KASAMATSU, Kazuomi ISOGAI
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Patent number: 10154189Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.Type: GrantFiled: November 28, 2014Date of Patent: December 11, 2018Assignee: Asahi Kasei Microdevices CorporationInventors: Arata Kasamatsu, Kazuomi Isogai
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Publication number: 20160327806Abstract: The present invention relates to an image stabilizer and a camera module. The image stabilizer for a lens that moves, with respect to an imaging element, in an auto-focus direction and a camera shake direction, includes a first position sensor, a distance signal calculation unit, a target position signal calculation circuit and a drive signal generation unit. A first detection position signal that indicates a position of the lens that moves in the camera shake direction, a second detection position signal that indicates a position of the lens that moves in the auto-focus direction, and an angular velocity signal that indicate an angular velocity when the lens is inclined from the optical axis direction to output a drive signal. A drive unit moves the lens in the camera shake direction depending on the drive signal.Type: ApplicationFiled: December 5, 2014Publication date: November 10, 2016Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventor: Arata KASAMATSU
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Patent number: 9467603Abstract: A position detection apparatus includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.Type: GrantFiled: March 30, 2015Date of Patent: October 11, 2016Assignee: Asahi Kasei Microdevices CorporationInventor: Arata Kasamatsu
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Publication number: 20160295099Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.Type: ApplicationFiled: November 28, 2014Publication date: October 6, 2016Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Arata KASAMATSU, Kazuomi ISOGAI
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Patent number: 9438776Abstract: A position detection apparatus includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.Type: GrantFiled: March 30, 2015Date of Patent: September 6, 2016Assignee: Asahi Kasei Microdevices CorporationInventor: Arata Kasamatsu
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Patent number: 9407799Abstract: There is provided a position detection apparatus that includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.Type: GrantFiled: May 31, 2013Date of Patent: August 2, 2016Assignee: Asahi Kasei Microdevices CorporationInventor: Arata Kasamatsu
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Publication number: 20150229842Abstract: A position detection apparatus includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.Type: ApplicationFiled: March 30, 2015Publication date: August 13, 2015Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventor: Arata KASAMATSU
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Publication number: 20150015729Abstract: There is provided a position detection apparatus that includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.Type: ApplicationFiled: May 31, 2013Publication date: January 15, 2015Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventor: Arata Kasamatsu