# US 2018/0321504 A1 · Optical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0321504 A1 - Document ID: US20180321504A1 - Status: Published application - Kind: A1 - Application number: 15/968,493 - Filed: 2018-05-01 - Published: 2018-11-08 - Earliest claimed: 2017-05-05 - Assignees: TDK Taiwan Corp. - Applicants: TDK Taiwan Corp. - Inventors: Chao-Chang HU; Shu-Shan CHEN; Chen-Hsien FAN; Liang-Ting HO - Web page: https://patentgrep.com/patent/US20180321504A1 ## 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)} - G02B 7/09: adapted for automatic focusing or varying magnification - G02B 26/0816: {by means of one or more reflecting elements} - G03B 2205/0023: by tilting or inclining one or more optical elements with respect to the optical axis - G03B 2205/0046: Movement of one or more optical elements for zooming - G03B 2205/0084: using other types of actuators - H02K 41/0356: {moving along a straight path} - 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}) ## Abstract An optical device includes a main base, a rotation mechanism, a carrying base, and an optical element. The rotation mechanism is connected to the main base. The carrying base is connected to the rotation mechanism. The optical element is disposed on the carrying base, and configured to change the transmission direction of an incident light. By changing the length of a bias wire of the rotation mechanism, the carrying base is rotated relative to the main base about a rotation axis. ## Claims ### Claim 1 An optical device, comprising: a main base; a rotation mechanism connected to the main base; a carrying base connected to the rotation mechanism; and an optical element disposed on the carrying base, and configured to change a transmission direction of incident light; wherein the carrying base is rotated relative to the main base about a first rotation axis by changing a length of a bias wire of the rotation mechanism. ### Claim 2 (depends on 1) The optical device as claimed in claim 1, wherein the bias wire includes a first conductive end and a second conductive end, wherein a power source provides voltage to the bias wire via the first conductive end and the second conductive end, so as to change the length of the bias wire. ### Claim 3 (depends on 1) The optical device as claimed in claim 1, wherein the carrying base is pivoted on the main base, and the bias wire has a first conductive end connected to the main base, and a second conductive end connected to the carrying base. ### Claim 4 (depends on 1) The optical device as claimed in claim 1, wherein the main base further comprises a first connection portion, and the carrying base further comprises a second connection portion, wherein the bias wire is connected to the first connection portion and the second connection portion. ### Claim 5 (depends on 4) The optical device as claimed in claim 4, further comprising a second bias wire connected to the main base and the carrying base; and a connection wire disposed on the carrying base, and connected to the bias wire and the second bias wire. ### Claim 6 (depends on 1) The optical device as claimed in claim 1, wherein the rotation mechanism further comprises an elastic element connected to the main base and the carrying base, and the bias wire surrounds the elastic element. ### Claim 7 (depends on 6) The optical device as claimed in claim 6, wherein the elastic element comprises: an elastic body disposed on the carrying base; an elastic arm connected to the elastic body; and a movable portion disposed on the elastic arm; wherein the bias wire is in contact with the movable portion, and when the length of the bias wire is shorter, the bias wire moves the movable portion so as to rotate the elastic body. ### Claim 8 (depends on 7) The optical device as claimed in claim 7, wherein the main base further includes a fixed portion, and a far end of the elastic arm is connected to the fixed portion. ### Claim 9 (depends on 7) The optical device as claimed in claim 7, wherein the main base comprises a limitation portion, and the bias wire is in slidable contact with the limitation portion. ### Claim 10 (depends on 1) The optical device as claimed in claim 1, further comprising an elastic sheet disposed on the main base and the carrying base, and configured to provide an elastic force between the main base and the carrying base. ### Claim 11 (depends on 10) The optical device as claimed in claim 10, wherein the elastic sheet further comprises a shaft portion extending along the first rotation axis. ### Claim 12 (depends on 1) The optical device as claimed in claim 1, wherein the rotation mechanism further comprises a third bias wire, wherein the carrying base is rotated relative to the main base about a first rotation direction by changing a length of the first bias wire, and the carrying base is rotated relative to the main base in a second rotation direction by changing a length of the third bias wire. ### Claim 13 (depends on 1) The optical device as claimed in claim 1, further comprising a second rotation mechanism connected to the main base and the carrying base, wherein the carrying base is rotated relative to the main base about a second rotation axis by changing a length of a fourth bias wire of the second rotation mechanism. ### Claim 14 (depends on 1) The optical device as claimed in claim 1, further comprising an outer main base movably disposed on the main base; and a third rotation mechanism connected to the outer main base and the main base. ### Claim 15 (depends on 1) The optical device as claimed in claim 1, wherein an extension direction of the bias wire is perpendicular to the first rotation axis. ### Claim 16 (depends on 1) The optical device as claimed in claim 1, wherein the bias wire is located on an imaginary plane, and the imaginary plane is not parallel to the first rotation axis. ### Claim 17 (depends on 1) The optical device as claimed in claim 1, wherein the bias wire and the carrying base are arranged in an extension direction of the first rotation axis. ### Claim 18 (depends on 1) The optical device as claimed in claim 1, wherein the incident light passing through the optical element is transmitted along a light axis, and the first rotation axis is not parallel to the light axis. ### Claim 19 (depends on 1) The optical device as claimed in claim 1, further comprising a lens adjacent to the optical element, wherein the lens and the optical element are arranged in a direction that is not parallel to the first rotation axis. ### Claim 20 (depends on 19) The optical device as claimed in claim 19, further comprising a drive assembly that is adjacent to the optical element, and configured to move the lens.