# US 2021/0240003 A1 · Optical assembly with shake correction function > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240003 A1 - Document ID: US20210240003A1 - Status: Published application - Kind: A1 - Application number: 17/161,722 - Filed: 2021-01-29 - Published: 2021-08-05 - Earliest claimed: 2020-01-30 - Assignees: Nidec Corporation - Applicants: Nidec Corporation - Inventors: Kazuhiro SAZAI; Tomohiro EGAWA; Takayuki IWASE; Genki TANAKA; Tsutomu ARAI; Shinji MINAMISAWA; Takeshi SUE - Web page: https://patentgrep.com/patent/US20210240003A1 ## 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 5/06: Swinging lens about normal to the optical axis - G03B 30/00: Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles - 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 - 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 optical assembly includes a movable body that includes an optical module, a frame body radially outward of the movable body, and support portions that swingably support the movable body with respect to the frame body. Each of the support portions includes a guide portion between the movable body and the frame body to support the movable body, and a preload portion that pushes the guide portion toward the movable body. A radially inner end portion of the preload portion is connected to a radially outer end portion of the guide portion. A radially outer end portion of the preload portion is supported by the frame body. One of the movable body and the guide portion includes a first convex surface, and the other includes a first concave surface in contact with the first convex surface. ## Claims ### Claim 1 An optical assembly with a shake correction function to correct a shake of an optical module, the optical assembly comprising: a movable body that includes the optical module; a frame body radially outward of the movable body in a radial direction with respect to an optical axis of the optical module; and a plurality of support portions that swingably support the movable body with respect to the frame body; wherein each of the plurality of support portions includes a guide portion and a preload portion; the guide portion is between the movable body and the frame body to support the movable body; a radially inner end portion of the preload portion is connected to a radially outer end portion of the guide portion; a radially outer end portion of the preload portion is supported by the frame body; one of the movable body and the guide portion includes a first convex surface protruding from the one of the movable body and the guide portion toward another of the movable body and the guide portion; the another of the movable body and the guide portion includes a first concave surface in contact with the first convex surface; the first convex surface and the first concave surface have a spherical shape; and the preload portion pushes the guide portion toward the movable body. ### Claim 2 (depends on 1) The optical assembly according to claim 1, wherein a radius of curvature of the first convex surface is equal to or less than a radius of curvature of the first concave surface. ### Claim 3 (depends on 1) The optical assembly according to claim 1, wherein a total number of support portions is three or more. ### Claim 4 (depends on 1) The optical assembly according to claim 1, wherein the preload portion includes an elastic body; a radially inner end portion of the elastic body is connected to the guide portion; and a radially outer end portion of the elastic body is supported by the frame body. ### Claim 5 (depends on 1) The optical assembly according to claim 1, wherein one of the frame body and the preload portion includes a second convex surface protruding from the one of the frame body and the preload portion toward another of the frame body and the preload portion; and the another of the frame body and the preload portion includes a second concave surface that is recessed from the one of the frame body and the preload portion toward the other of the frame body and the preload portion and is in contact with the second convex surface. ### Claim 6 (depends on 5) The optical assembly according to claim 5, wherein the second convex surface and the second concave surface are both curved surfaces; and a radius of curvature of the second convex surface is equal to or less than a radius of curvature of the second concave surface. ### Claim 7 (depends on 1) The optical assembly according to claim 1, wherein a plurality of the support portions include a pair of the support portions opposing each other with the movable body interposed therebetween. ### Claim 8 (depends on 1) The optical assembly according to claim 1, wherein a plurality of the support portions are positioned at equal intervals in a circumferential direction centered on the optical axis of the optical module. ### Claim 9 (depends on 1) The optical assembly according to claim 1, wherein the preload portion pushes the guide portion toward a swing center of the movable body. ### Claim 10 (depends on 1) The optical assembly according to claim 1, wherein the plurality of the support portions includes: a first support portion in which the preload portion pushes the guide portion in a first direction toward one side in an optical axis direction of a swing center of the movable body; and a second support portion in which the preload portion pushes the guide portion in a second direction toward the other side in the optical axis direction of the swing center of the movable body. ### Claim 11 (depends on 1) The optical assembly according to claim 1, wherein one of the frame body and the movable body includes a rotation curbing portion; and the rotation curbing portion is movable into contact with another of the frame body and the movable body when the movable body rotates in a circumferential direction centered on an optical axis of the optical module in a stationary state of the movable body.