Patents by Inventor Kazuo Shikama

Kazuo Shikama 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: 20250093743
    Abstract: An adjustable diaphragm is disclosed. At least one light-shielding blade is movably fixed through cooperation of a blade supporting ring and a blade driving ring, an electromagnetic driving assembly drives, by using Lorentz force between driving magnet and a driving coil, a driving rod to rotate relative to a base, and the driving rod is slidably connected to the blade driving ring, to drive the blade driving ring to rotate, thereby driving, by using the blade driving ring, the light-shielding blade to rotate to block or expose a lens of a camera module. In this way, a diaphragm part and the electromagnetic driving assembly are separated from the lens, a counterweight of the camera module can be optimized, and a burden on an autofocus mechanism is reduced. In the present disclosure, a camera module and an electronic device are further disclosed.
    Type: Application
    Filed: December 21, 2023
    Publication date: March 20, 2025
    Inventors: Takashi Iwasaki, Kazuo Shikama
  • Publication number: 20250093749
    Abstract: The embodiments of the present application relate to the technical field of camera devices, and disclose a camera module that uses the magnetic force between the driving coil group and the driven magnetic member group to achieve non-contact driving of the shading blade by the blade driving mechanism, so that the blade driving mechanism and the autofocus mechanism operate independently of each other without interference. Moreover, since the cylinder, the lens, the driving coil group, and the blade support member are all assembled along the optical axis, which avoids multi-directional protrusions of the camera module. The camera module provided according to the present application has a more concise structure and uses fewer components, which can reduce the assembly difficulty and manufacturing cost of the camera module. The present application also discloses an electronic device including a device body and a camera module arranged on the device body.
    Type: Application
    Filed: December 19, 2023
    Publication date: March 20, 2025
    Inventor: Kazuo Shikama
  • Publication number: 20250068035
    Abstract: Provided are a blade driving device, a camera device and a portable electronic device. The blade driving device includes a housing, a rotary body, a blade, at least one driving coil, a circuit board and at least one magnetic yoke. At least one rotating shaft extending into the accommodation space is disposed on the housing. The rotary body is a magnetic member with at least two magnetic poles. The blade includes one end fixedly connected to the rotary body and rotatable with the rotary body, and another end provided with a shielding portion and an opening portion. Compared with the related art, the present disclosure achieves compactness by omitting a number of mounted parts, realizing high efficient utilization of space and simplicity of structure and assembly, and enabling more efficient blade driving with a simpler structure.
    Type: Application
    Filed: December 21, 2023
    Publication date: February 27, 2025
    Inventor: Kazuo Shikama
  • Publication number: 20250067955
    Abstract: The camera device includes a base, a lens unit having an optical axis, a camera element unit, a first movable frame, a second movable frame, multiple first balls, multiple second balls, a first drive mechanism, and a second drive mechanism. The first movable frame is supported on the base by the multiple first balls. The first drive mechanism is configured to drive the first movable frame to rotate and/or move radially along the optical axis. The second movable frame is supported on the first movable frame by the multiple second balls, and the camera element unit is fixed to the second movable frame. The second drive mechanism is configured to drive the camera element unit to move along the optical axis and/or deflect along a direction perpendicular to the optical axis. The present application can achieve more efficient anti-shaking correction and autofocusing, and improve the quality of captured images.
    Type: Application
    Filed: December 29, 2023
    Publication date: February 27, 2025
    Inventors: Takashi Iwasaki, Kazuo Shikama
  • Publication number: 20250044664
    Abstract: The present invention relates to an imaging device and a camera. The imaging device includes an autofocus lens module with an optical axis, an imaging module, and an anti-vibration mechanism. The anti-vibration mechanism includes, from an image side to an object side in sequence: a base with a magnet disposed thereon; a drive frame rotatably disposed on the base, a rotation axis of the drive frame being perpendicular to the optical axis, a locking mechanism and a drive coil being disposed on opposite sides of the rotation axis; a movable frame with the imaging module fixedly disposed thereon, the movable frame driving the imaging module to move together relative to the optical axis to achieve anti-shake, and a cooperating mechanism corresponding to the locking mechanism being disposed on the movable frame. Such imaging device and camera can reduce assembly difficulty and avoid wear and indentation caused by drop impact.
    Type: Application
    Filed: December 29, 2023
    Publication date: February 6, 2025
    Inventors: Takashi Iwasaki, Kazuo Shikama
  • Publication number: 20250036007
    Abstract: The present disclosure relates to the field of optics and discloses a camera device. The camera device includes a driving mechanism and a lens module. The driving mechanism includes a base with a first magnetic yoke and a driving coil, and a first frame with a magnet and an inclined supporting surface. The lens module includes a lens holder, and the first frame supports the lens holder via the inclined supporting surface. When the driving coil is energized, the first frame is driven to rotate, and the first frame drives the lens holder to move in the direction of the optical axis or tilt with respect to the optical axis via the rotating inclined supporting surface. The camera device and the electronic apparatus require no leaf spring, thereby avoiding the problem of control performance degradation and weight distribution caused by the leaf spring.
    Type: Application
    Filed: December 14, 2023
    Publication date: January 30, 2025
    Inventors: Takashi Iwasaki, Kazuo Shikama
  • Publication number: 20250013003
    Abstract: The present invention relates to an imaging module. A first driving member and a second driving member cooperate to drive the lens support frame to focus; and the first driving member is also for cooperating with a third driving member to drive multiple light-shielding blades to gather or separate, via the blade driving frame and the blade driving ring That is, the drive member which drives the light-shielding blade to move and drives the lens module to focus is the first driving member, so that the number of components of the imaging module can be reduced, thereby reducing the volume and weight of the imaging module, and avoiding interference between the focusing structure. A camera and an electronic device are also provided.
    Type: Application
    Filed: November 24, 2023
    Publication date: January 9, 2025
    Inventor: Kazuo Shikama
  • Publication number: 20250013122
    Abstract: Embodiments of the disclosure relate to a camera module. The base is provided with a driving member, the driving member is used for driving a lens supporting frame to move and focus along an optical axis direction, and the driving member is further configured to drive the blade driving frame to rotate around the optical axis. That is to say, the driving member for driving the light-shielding blades and the driving member for driving the lens to focus are the same, so that the number of elements of the camera module can be reduced, thereby reducing the volume and weight of the camera module, and avoiding interference between the structure for focusing in the camera module and the power mechanism for driving the light-shielding blades. The embodiments of the disclosure further disclose a camera and an electronic device.
    Type: Application
    Filed: December 14, 2023
    Publication date: January 9, 2025
    Inventor: Kazuo Shikama
  • Patent number: 12126900
    Abstract: A camera device and a portable electronic device are provided. The camera device includes a camera lens and an anti-shake mechanism. The anti-shake mechanism includes a base, a supporting frame, a driving member, and a supporting member. The camera lens is fixed to the supporting frame. The driving member includes at least one coil and at least one magnetic steel. The driving member is configured to drive the supporting frame to move relative to the base in a direction perpendicular to the optical axis, and the supporting member is arranged between the supporting frame and the base to support movement of the supporting frame. The anti-shake mechanism further comprises at least one magnetic fluid body arranged on at least one of the base and the supporting frame.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: October 22, 2024
    Assignee: Changzhou AAC Raytech Optronics Co., Ltd.
    Inventors: Kazuo Shikama, Takashi Iwasaki
  • Publication number: 20240080558
    Abstract: A camera device and a portable electronic device are provided. The camera device includes a camera lens and an anti-shake mechanism. The anti-shake mechanism includes a base, a supporting frame, a driving member, and a supporting member. The camera lens is fixed to the supporting frame. The driving member includes at least one coil and at least one magnetic steel. The driving member is configured to drive the supporting frame to move relative to the base in a direction perpendicular to the optical axis, and the supporting member is arranged between the supporting frame and the base to support movement of the supporting frame. The anti-shake mechanism further comprises at least one magnetic fluid body arranged on at least one of the base and the supporting frame.
    Type: Application
    Filed: December 22, 2022
    Publication date: March 7, 2024
    Inventors: Kazuo Shikama, Takashi Iwasaki
  • Patent number: 11910091
    Abstract: Provided is a camera device, including: a camera lens having an optical axis; a lens driving mechanism configured to drive the camera lens to move along the optical axis; an image stabilization mechanism including a movable frame, and an image sensor chip and a first flexible substrate arranged at the movable frame. The image stabilization mechanism is movable in a plane of the image sensor chip, and the first flexible substrate is made of liquid crystal polymer. The use of the LCP substrate for the first flexible substrate can greatly reduce elasticity of existing flexible substrates due to polyimide, so it has frequency characteristics similar to other rigid bodies and system resonance is not easily generated during movement of the image stabilization mechanism. Therefore, more precise servo control of the movable frame can achieved, thereby enabling camera device to have higher-quality hand-shake correction control and image stabilization control.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: February 20, 2024
    Assignee: Changzhou AAC Raytech Optronics Co., Ltd.
    Inventor: Kazuo Shikama
  • Publication number: 20230403468
    Abstract: The present invention discloses an image pickup apparatus, a camera and a mobile electronic device. The image pickup apparatus comprises a housing; a movable component and a fixed component, the fixed component comprising a lens with an optical axis, and the movable component comprising a moving frame and a sensor component; a first connector movably connecting the movable component with the fixed component; a first driving component used for driving the movable component to move in a direction perpendicular to the optical axis; a second connector movably connecting the moving frame with the sensor component; and a second driving component used for driving the sensor component to move in the direction of the optical axis. The image pickup apparatus coincides with the development direction of “miniaturization”, and facilitates optical axis alignment during assembly, thus improving the image pickup quality of the image pickup apparatus.
    Type: Application
    Filed: June 2, 2023
    Publication date: December 14, 2023
    Inventors: Kazuo Shikama, Takashi Iwasaki
  • Publication number: 20230400751
    Abstract: A shooting apparatus, a camera, and an electronic device, related to a field of optical technologies, are provided. According to the shooting apparatus, in order to fix the lens assembly, the focusing magnets and the fixing magnetic yokes are used to replace a leaf spring. Then, by energizing the focusing coils, the lens assembly realizes autofocus under the action of the forces of attraction between the focusing magnets and the focusing coils. Therefore, the shooting apparatus can realize focusing and fix the lens assembly without using the leaf spring. This prevents the autofocus mechanism from malfunction caused by easy damage of the leaf spring, and reduces the size and weight of the shooting apparatus, thereby improving the performance of the autofocus mechanism.
    Type: Application
    Filed: June 6, 2023
    Publication date: December 14, 2023
    Inventor: Kazuo Shikama
  • Patent number: 11838633
    Abstract: Provided is a camera device, including: a case having a receiving cavity; a focus adjustment mechanism installed to a camera lens having an optical axis; and an image stabilization mechanism, the image stabilization mechanism and the focus adjustment mechanism being arranged along a direction of the optical axis. The focus adjustment mechanism includes a focus adjustment magnet and a first base. The image stabilization mechanism includes a second base and a flexible substrate fixed to the second base, the flexible substrate is configured with and electrically connected to a first coil, the first coil corresponds to and is spaced from the focus adjustment magnet in a direction perpendicular to the direction of the optical axis, and the first coil interacts with the focus adjustment magnet when being energized, to drive the flexible substrate to move in a plane orthogonal to the direction of the optical axis.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: December 5, 2023
    Assignee: AAC Optics (Nanning) Co., Ltd.
    Inventors: Takashi Iwasaki, Kazuo Shikama
  • Patent number: 11828956
    Abstract: Provided is a camera device, including a housing having an accommodating cavity; a lens placed in the accommodating cavity; and an anti-shake mechanism placed in the accommodating cavity and including a first movable part, a first fixing part, a first coil, a first magnet, a filter, and a photosensitive sensor. The first coil, the filter and the photosensitive sensor are fixed to the first movable part. The first magnet is fixed to the first fixing part, and the first magnet and the first coil are spaced apart from each other to drive the first movable part to reciprocate inn a plane orthogonal to an optical axis direction. Compared with the related art, low-height and miniaturization of the camera device can be achieved, the components are simplified and the size is reduced, the occupied space of the components is reduced and the quality of the camera image is improved.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: November 28, 2023
    Assignee: AAC Optics (Suzhou) Co., Ltd.
    Inventor: Kazuo Shikama
  • Patent number: 11808949
    Abstract: The present invention provides a lens driving device, a camera and an electronic apparatus with a small size and an excellent effect in hand vibration correction. The lens driving device includes a case having an accommodation space, in which a lens module is provided. The lens module includes a lens, a lens holder receiving the lens, a support frame for freely rotating the lens holder in a direction orthogonal to an optical axis direction, support members, an electromagnetic driving device, and a base for fixing a circuit board; the electromagnetic driving device is arranged on the lens holder and the base for fixing the circuit board, and is provided adjacent to a level of a center of gravity of the lens module; and the lens module have different movement axes in a plane and is rotatable freely relative to the base for fixing the circuit board.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: November 7, 2023
    Assignee: Changzhou Raytech Optronics Co., Ltd.
    Inventors: Ching-Chung Chiu, Kazuo Shikama
  • Patent number: 11804320
    Abstract: Provided is a camera device including a housing having accommodation cavity; an optical imaging part placed in the accommodation cavity and including lens having optical axis and drive mechanism; and an anti-shake mechanism placed in the accommodation cavity and including first movable part, first fixed part, first coil, first magnet, filter and photosensitive sensor. The drive mechanism includes second magnet to drive the lens. The first magnet, the first coil and the second magnet are successively arranged at intervals along optical axis direction, and the first coil is simultaneously under action of the first and second magnets to drive the first movable part. Compared with the related art, the first coil can utilize the magnetic fluxes of the first and second magnets at the same time, so that the first movable part fixed with the first coil can receive larger driving force, thereby improving efficiency of shake correction.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: October 31, 2023
    Assignee: AAC Optics (Suzhou) Co., Ltd.
    Inventor: Kazuo Shikama
  • Patent number: 11796832
    Abstract: Provided is an anti-vibration device, including a housing, a base fixed to the housing, and an anti-vibration mechanism accommodated in the housing. The anti-vibration mechanism includes a lens, a rolling member, a movable frame, an image sensor, and an electric actuator. The electric actuator includes a coil and a magnet, and the magnet and the coil are arranged opposite to each other to actuate the movable frame to drive the image sensor to move along the first direction and the second direction orthogonal to the optical axis. The anti-vibration mechanism adopts two coils arranged at intervals along the first direction two coils arranged at intervals along the second direction, so that the electric actuator drives the image sensor to rotate in the plane of the first direction and the second direction, which helps to improve the shooting effect.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: October 24, 2023
    Assignee: Changzhou AAC Raytech Optronics Co., Ltd.
    Inventor: Kazuo Shikama
  • Publication number: 20230319409
    Abstract: Provided is a camera device, including: a case having a receiving cavity; a focus adjustment mechanism installed to a camera lens having an optical axis; and an image stabilization mechanism, the image stabilization mechanism and the focus adjustment mechanism being arranged along a direction of the optical axis. The focus adjustment mechanism includes a focus adjustment magnet and a first base. The image stabilization mechanism includes a second base and a flexible substrate fixed to the second base, the flexible substrate is configured with and electrically connected to a first coil, the first coil corresponds to and is spaced from the focus adjustment magnet in a direction perpendicular to the direction of the optical axis, and the first coil interacts with the focus adjustment magnet when being energized, to drive the flexible substrate to move in a plane orthogonal to the direction of the optical axis.
    Type: Application
    Filed: May 10, 2022
    Publication date: October 5, 2023
    Inventors: Takashi Iwasaki, Kazuo Shikama
  • Publication number: 20230314757
    Abstract: Provided is a lens drive including: a housing; a focus adjustment mechanism including a lens assembly having an optical axis and a fixing member fixed to the housing, the lens assembly is movably connected to the fixing member, and the lens assembly includes at least one lens piece movable along an optical axis; an anti-shake mechanism including a bottom plate fixed on the housing and an image sensor module movable relative to the bottom plate in a direction perpendicular to the optical axis; and a shock absorbing gel provided between the fixing member and the image sensor module. The shock absorbing gel can absorb the interaction force between the anti-shake mechanism and the focus adjustment mechanism when the lens drive is impacted by the external environment, thereby reducing the possibility of damage to the components in the lens drive.
    Type: Application
    Filed: April 22, 2022
    Publication date: October 5, 2023
    Inventor: Kazuo Shikama