# US 12,113,420 B2 · OIS motor and ball-based four-axis tilt OIS structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,420 B2 - Document ID: US12113420B2 - Status: Granted - Kind: B2 - Application number: 17/615,834 - Filed: 2020-07-24 - Published: 2022-10-13 - Granted: 2024-10-08 - Earliest claimed: 2019-12-25 - Assignees: New Shicoh Motor Co., Ltd. - Applicants: New Shicoh Motor Co., Ltd - Inventors: Ji Zhou; Yingchi Cho - Web page: https://patentgrep.com/patent/US12113420B2 ## CPC - H02K 41/0354: {Lorentz force motors, e.g. voice coil motors} - G02B 27/646: {compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68)} - G03B 5/00: Adjustment of optical system relative to image or object surface other than for focusing - G03B 5/06: Swinging lens about normal to the optical axis - G03B 17/02: Bodies - G03B 2205/0007: Movement of one or more optical elements for control of motion blur - G03B 2205/0023: by tilting or inclining one or more optical elements with respect to the optical axis - G03B 2205/0069: using electromagnetic actuators, e.g. voice coils - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract An OIS motor and a ball-based four-axis Tilt OIS (optical image stabilization) structure. The ball-based four-axis Tilt OIS structure includes a housing and a lens holder disposed in an inner cavity of the housing, a plurality of magnets is evenly distributed on the inner wall of the housing, a plurality of coils corresponding to the magnets is evenly distributed on side walls of the lens holder, the coils on the same side wall of the lens holder are wound in the same direction, the coils on the two opposite side walls of the lens holder are wound in reverse directions, and a movable mechanism is disposed between the housing and the lens holder. ## Claims ### Claim 1 A ball-based four-axis Tilt OIS (optical image stabilization) structure, comprising a housing and a lens holder disposed in an inner cavity of the housing, wherein a plurality of magnets is evenly distributed on the inner wall of the housing, a plurality of coils corresponding to the magnets is evenly distributed on side walls of the lens holder, the coils on the same side wall of the lens holder are wound in the same direction, the coils on the two opposite side walls of the lens holder are wound in reverse directions, and a movable mechanism is disposed between the housing and the lens holder to facilitate the movement of the lens holder; the movable mechanism comprises a first bracket disposed on the inner wall of the housing, a second bracket disposed on the side walls of the lens holder, a middle bracket disposed between the first bracket and the second bracket, at least two first balls disposed between the first bracket and the middle bracket to facilitate the translation or flip of the middle bracket, and at least two second balls disposed between the second bracket and the middle bracket, and the arrangement direction of the first balls is perpendicular to that of the second balls, wherein a plate spring is fixedly disposed between the second bracket and the housing, and a fixed position of the plate spring on housing is lower than that on the second bracket, so that the plate spring applies a downward tensile force to the second bracket and provides an elastic force for restoring to an initial position during movement. ### Claim 2 (depends on 1) The ball-based four-axis Tilt OIS structure according to claim 1, wherein two coils are disposed on each side wall of the lens holder, and the two coils on the same side wall of the lens holder are arranged horizontally and symmetrically with respect to the center of the lens holder. ### Claim 3 (depends on 2) The ball-based four-axis Tilt OIS structure according to claim 2, wherein there are eight magnets disposed on the upper and lower sides of the first bracket, and each coil faces two corresponding magnets disposed on the upper and lower sides of the first bracket. ### Claim 4 (depends on 1) The ball-based four-axis Tilt OIS structure according to claim 1, wherein the first bracket, the second bracket and the middle bracket are all provided with accommodating grooves for the movement of the corresponding first balls or second balls. ### Claim 5 (depends on 4) The ball-based four-axis Tilt OIS structure according to claim 4, wherein the lengths of the accommodating grooves are perpendicular to the corresponding side walls of the lens holder, and the cross section of the accommodating grooves is arc-shaped. ### Claim 6 A movable mechanism of a lens holder in an OIS motor, comprising a first bracket disposed on the inner wall of the housing, a second bracket disposed on the side walls of the lens holder, a middle bracket disposed between the first bracket and the second bracket, at least two first balls disposed between the first bracket and the middle bracket to facilitate the translation or flip of the middle bracket, and at least two second balls disposed between the second bracket and the middle bracket, wherein the arrangement direction of the first balls is perpendicular to that of the second balls, wherein a plate spring is fixedly disposed between the second bracket and the housing, and a fixed position of the plate spring on housing is lower than that on the second bracket, so that the plate spring applies a downward tensile force to the second bracket and provides an elastic force for restoring to an initial position during movement. ### Claim 7 (depends on 1) An OIS motor, comprising the ball-based four-axis Tilt OIS structure according to claim 1. ### Claim 8 (depends on 7) A camera device, comprising the OIS motor according to claim 7. ### Claim 9 (depends on 8) An electronic equipment, comprising the camera device according to claim 8.