# US 10,502,973 B2 · Shake correction device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,973 B2 - Document ID: US10502973B2 - Status: Granted - Kind: B2 - Application number: 15/363,845 - Filed: 2016-11-29 - Published: 2017-03-16 - Granted: 2019-12-10 - Earliest claimed: 2015-07-17 - Assignees: Olympus Corporation - Applicants: Olympus Corporation - Inventors: Yosuke Inoue - Web page: https://patentgrep.com/patent/US10502973B2 ## CPC - 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 - H02K 41/02: Linear motors; Sectional motors - H02K 41/0354: {Lorentz force motors, e.g. voice coil motors} - H04N 23/50: Constructional details - H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils - H04N 23/60: Control of cameras or camera modules - H04N 23/663: for controlling interchangeable camera parts based on electronic image sensor signals - H04N 23/6812: {based on additional sensors, e.g. acceleration sensors} - H04N 23/687: {by shifting the lens or sensor position} - G03B 2205/0015: by displacing one or more optical elements normal to the optical axis - G03B 2205/0038: by displacing the image plane with respect to the optical axis - G03B 2205/0069: using electromagnetic actuators, e.g. voice coils - H02K 2201/18: Machines moving with multiple degrees of freedom - 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) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A shake correction device includes a fixed member and movable member. The fixed member has one of three drive coils and three magnets. The movable member has other of the drive coils and the magnets. Three detectors are arranged on the fixed member or the movable member. A movement amount calculator calculates movement amounts and movement directions of operating points in the drive coils. A drive controller moves the movable member to apply to the drive coils based on outputs from the movement amount calculator. The drive coils are arranged such that imaginary lines passing through the operating points in the respective drive coils and parallel to long sides of the respective drive coils cross one another. Each of the detectors is arranged at a position with respect to the corresponding drive coil, where detection direction differs from a direction of a force acting on the operating point. ## Claims ### Claim 1 A shake correction device comprising: a fixed member on which one of three drive coils and three drive magnets are arranged; a movable member on which one of an optical element and an image sensor, and the other one of the three drive coils and the three drive magnets are arranged, the movable member being movable with respect to the fixed member, and the three drive magnets facing the three drive coils; three detection magnets arranged on the fixed member or the movable member on which the three drive magnets are arranged; three detectors arranged on the fixed member or the movable member on which the three drive coils are arranged, wherein the three detectors face the three detection magnets and detect a change in magnetic flux generated according to a change in distance to the three detection magnets; a movement amount calculator which calculates movement amounts and movement directions of operating points in the three drive coils based on outputs from the three detectors; and a drive controller which moves the movable member by controlling currents to apply to the three drive coils based on outputs from the movement amount calculator, wherein the three detectors and the three detection magnets form pairs, respectively, each pair being arranged between respective neighboring ones of the three drive coils, and wherein the movement amount calculator uses outputs from two or three of the three detectors to calculate the movement amounts and the movement directions of the operating points in the respective three drive coils. ### Claim 2 (depends on 1) The shake correction device according to claim 1, wherein the three drive coils are arranged such that their respective operating points locate on a same circumference. ### Claim 3 (depends on 2) The shake correction device according to claim 2, wherein the three drive coils are arranged such that three imaginary lines, which pass through the operating points in the respective three drive coils and are parallel to long sides of the respective three drive coils, cross one another. ### Claim 4 (depends on 1) The shake correction device according to claim 1, wherein the three detectors are each arranged in a region surrounded by a first imaginary circle passing through front ends of the respective three drive coils, and a second imaginary circle passing through rear ends of the respective three drive coils. ### Claim 5 (depends on 4) The shake correction device according to claim 4, wherein the three detectors are arranged to form an equilateral triangle. ### Claim 6 (depends on 1) The shake correction device according to claim 1, wherein the three detectors are each arranged on imaginary vertical lines passing through the operating points in the respective three drive coils and vertical to long sides of the respective three drive coils.