# US 2021/0240061 A1 · Optical module and projection apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240061 A1 - Document ID: US20210240061A1 - Status: Published application - Kind: A1 - Application number: 17/164,775 - Filed: 2021-02-01 - Published: 2021-08-05 - Earliest claimed: 2020-02-05 - Assignees: Coretronic Corporation - Applicants: Coretronic Corporation - Inventors: Wei-Hao Chen; Jing-Si Chen - Web page: https://patentgrep.com/patent/US20210240061A1 ## CPC - G02B 26/08: for controlling the direction of light (in light guides G02B6/35) - G03B 21/14: Details - G02B 7/005: {Motorised alignment} - G02B 27/0927: {Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat} - G03B 21/005: {Projectors using an electronic spatial light modulator but not peculiar thereto} - G03B 21/2066: {Reflectors in illumination beam (in projection beam G03B21/28)} - 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 The invention provides an optical module and a projection apparatus. The optical module includes a base, a first frame, an optical element, and at least one first driving assembly. The first frame is disposed in the base and includes a first body and a pair of first shaft portions, the first shaft portion extending outward from the first body, and the first body including a pair of first inner folded edges. The optical element is disposed between the pair of first inner folded edges. The first driving assembly and the optical element abut against two opposite sides of one of the first inner folded edges, respectively, and the first driving assembly is configured to drive the first body to swing relative to the base by taking the first shaft portion as a rotating shaft. ## Claims ### Claim 1 An optical module comprising: a base, a first frame, an optical element, and at least one first driving assembly, wherein the first frame is disposed in the base, and the first frame comprises a first body and a pair of first shaft portions, wherein the pair of first shaft portions extend outward from the first body, and the first body comprises a pair of first inner folded edges; the optical element is disposed between the pair of first inner folded edges; and the at least one first driving assembly and the optical element abut against two opposite sides of one of the pair of first inner folded edges, respectively, and the at least one first driving assembly is configured to drive the first body to swing relative to the base by taking the pair of first shaft portions as a rotating shaft. ### Claim 2 (depends on 1) The optical module according to claim 1, wherein the first body further comprises a pair of first outer folded edges, wherein the first inner folded edges are located on two opposite sides of the first body, the first outer folded edges are located on other two opposite sides of the first body, and the optical element abuts against the pair of first outer folded edges and the pair of first inner folded edges. ### Claim 3 (depends on 1) The optical module according to claim 1, wherein a side face of the first driving assembly faces the abutted first inner folded edge, and an area in which the side face of the first driving assembly overlaps with the first inner folded edge against which the first driving assembly abuts is greater than or equal to 50% of an area of the side face of the first driving assembly. ### Claim 4 (depends on 1) The optical module according to claim 1, wherein the pair of first shaft portions extend outward from a diagonal line of the first body. ### Claim 5 (depends on 1) The optical module according to claim 1, further comprising a second frame disposed between the first frame and the base, wherein the second frame comprises a second body and a pair of second shaft portions, wherein the pair of first shaft portions are connected to the second body, the pair of second shaft portions extend outward from two opposite sides of the second body and are connected to the base, and a direction in which the pair of first shaft portions extend is perpendicular to a direction in which the pair of second shaft portions extend. ### Claim 6 (depends on 5) The optical module according to claim 5, further comprising at least one second driving assembly, wherein the second body further comprises a pair of second inner folded edges, the at least one second driving assembly is disposed on one side, which is oriented toward the base, of one of the pair of second inner folded edges, and the at least one second driving assembly is configured to drive the second body to swing relative to the base by taking the pair of second shaft portions as a rotating shaft. ### Claim 7 (depends on 6) The optical module according to claim 6, further comprising a plurality of second outer folded edges, wherein a part of the at least one second driving assembly is sandwiched between two second outer folded edges of the plurality of second outer folded edges. ### Claim 8 (depends on 2) The optical module according to claim 2, wherein the first outer folded edge is a continuous and uninterrupted folded edge. ### Claim 9 (depends on 2) The optical module according to claim 2, wherein the first outer folded edge comprises a disconnected portion. ### Claim 10 A projection apparatus comprising an illumination system, a light valve, an optical module, and a projection lens, wherein the illumination system is configured to provide an illumination beam, the light valve is located on a transmission path of the illumination beam and is configured to convert the illumination beam into an image beam, the optical module is located on a transmission path of the image beam and is configured to increase a resolution of the image beam, and the optical module comprises a base, a first frame, an optical element, and at least one first driving assembly, wherein the first frame is disposed in the base, and the first frame comprises a first body and a pair of first shaft portions, wherein the pair of first shaft portions extend outward from the first body, and the first body comprises a pair of first inner folded edges, the optical element is disposed between the pair of first inner folded edges, and the at least one first driving assembly and the optical element abut against two opposite sides of one of the pair of first inner folded edges, respectively, and the at least one first driving assembly is configured to drive the first body to swing relative to the base by taking the pair of first shaft portions as a rotating shaft, and the projection lens is located on the transmission path of the image beam and is configured to project the image beam, wherein the optical module is disposed between the light valve and the projection lens. ### Claim 11 (depends on 10) The projection apparatus according to claim 10, wherein the first body further comprises a pair of first outer folded edges, wherein the first inner folded edges are located on two opposite sides of the first body, the first outer folded edges are located on other two opposite sides of the first body, and the optical element abuts against the pair of first outer folded edges and the pair of first inner folded edges. ### Claim 12 (depends on 10) The projection apparatus according to claim 10, wherein a side face of the first driving assembly faces the abutted first inner folded edge, and an area in which the side face of the first driving assembly overlaps with the first inner folded edge against which the first driving assembly abuts is greater than or equal to 50% of an area of the side face of the first driving assembly. ### Claim 13 (depends on 10) The projection apparatus according to claim 10, wherein the pair of first shaft portions extend outward from a diagonal line of the first body. ### Claim 14 (depends on 10) The projection apparatus according to claim 10, further comprising a second frame disposed between the first frame and the base, wherein the second frame comprises a second body and a pair of second shaft portions, wherein the pair of first shaft portions are connected to the second body, the pair of second shaft portions extend outward from two opposite sides of the second body and are connected to the base, and a direction in which the pair of first shaft portions extend is perpendicular to a direction in which the pair of second shaft portions extend. ### Claim 15 (depends on 14) The projection apparatus according to claim 14, further comprising at least one second driving assembly, wherein the second body further comprises a pair of second inner folded edges, the at least one second driving assembly is disposed on one side, which is oriented toward the base, of one of the pair of second inner folded edges, and the at least one second driving assembly is configured to drive the second body to swing relative to the base by taking the pair of second shaft portions as a rotating shaft. ### Claim 16 (depends on 15) The projection apparatus according to claim 15, further comprising a plurality of second outer folded edges, wherein a part of the at least one second driving assembly is sandwiched between two second outer folded edges of the plurality of second outer folded edges. ### Claim 17 (depends on 11) The projection apparatus according to claim 11, wherein the first outer folded edge is a continuous and uninterrupted folded edge. ### Claim 18 (depends on 11) The projection apparatus according to claim 11, wherein the first outer folded edge comprises a disconnected portion.