# US 2025/0385993 A1 · Single component convergence mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0385993 A1 - Document ID: US20250385993A1 - Status: Published application - Kind: A1 - Application number: 19/236,468 - Filed: 2025-06-12 - Published: 2025-12-18 - Earliest claimed: 2024-06-17 - Assignees: Christie Digital Systems USA, Inc. - Applicants: Christie Digital Systems USA, Inc. - Inventors: Dustin TESCHKE; Jaksa MARIC; Mihai CIORANIC - Web page: https://patentgrep.com/patent/US20250385993A1 ## CPC - H04N 9/317: {Convergence or focusing systems (electronic adjustment of convergence H04N9/3185; convergence or focusing arrangements for cathode ray tubes H04N9/28; means for automatic focusing of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/53)} - G02B 26/0833: {the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD (G02B26/0825 takes precedence; micromechanical devices in general B81B)} - G03B 21/008: {using micromirror devices} - G03B 21/142: {Adjusting of projection optics} - H04N 9/3141: {Constructional details thereof (details not peculiar to the presence of an electronic spatial light modulator G03B21/14)} - H04N 9/3185: {Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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 A single component convergence mechanism for a light modulator of a projector is provided. The single component convergence mechanism includes: a plate; a light-modulator-mounting position at the plate; a pair of slot spring mechanisms in the plate, the pair of slot spring mechanisms on opposite sides of the light-modulator-mounting position; and a pair of connecting slots in the plate joining the pair of slot spring mechanisms. A region formed by the pair of slot spring mechanisms and the pair of connecting slots is laterally displaceable within the plate via force applied to on a spring mechanism of the pair of slot spring mechanisms, the light-modulator-mounting position located at the region. The pair of slot spring mechanisms are connected to the region to a remainder of the plate. ## Claims ### Claim 1 A device comprising: a plate; a light-modulator-mounting position at the plate; a pair of slot spring mechanisms in the plate, the pair of slot spring mechanisms on opposite sides of the light-modulator-mounting position; a pair of connecting slots in the plate joining the pair of slot spring mechanisms; and a region formed by the pair of slot spring mechanisms and the pair of connecting slots that is laterally displaceable within the plate via force applied to a spring mechanism of the pair of slot spring mechanisms, the light-modulator-mounting position located at the region, the pair of slot spring mechanisms connected to the region to a remainder of the plate. ### Claim 2 (depends on 1) The device of claim 1, wherein respective parallel portions of the pair of connecting slots are about parallel to a movement direction of the region. ### Claim 3 (depends on 2) The device of claim 2, wherein connecting portions of the pair of connecting slots connect respective parallel portions to the pair of slot spring mechanisms. ### Claim 4 (depends on 1) The device of claim 1, wherein the pair of slot spring mechanisms respectively comprise: an outer slot; and an inner slot, wherein outer slots of the pair of slot spring mechanisms are joined via a first connecting slot of the pair of connecting slots, and inner slots of the pair of slot spring mechanisms are joined via a second connecting slot of the pair of connecting slots. ### Claim 5 (depends on 4) The device of claim 4, wherein the pair of slot spring mechanisms are connected, to the region at first respective ends, and the pair of slot spring mechanisms are connected to the remainder of the plate at second respective ends opposite the first respective ends. ### Claim 6 (depends on 1) The device of claim 1, wherein the pair of slot spring mechanisms respectively comprise an outer slot and an inner slot, wherein a distance between the outer slot and the inner slot is greater at respective center portions than at respective end portions. ### Claim 7 (depends on 6) The device of claim 6, wherein each of the outer slot and the inner slot comprises respective joining portions joining the respective center portions to the respective center portions. ### Claim 8 (depends on 1) The device of claim 1, further comprising: a first slot group comprising the pair of slot spring mechanisms and the pair of connecting slots; and a second slot group nested inside the first slot group, the second slot group rotated by 90° relative to the first slot group, the second slot group comprising: a second pair of slot spring mechanisms on respective opposite sides of the light-modulator-mounting position; and a second pair of connecting slots in the plate joining the second pair of slot spring mechanisms, the second pair of slot spring mechanisms connected, at respective second inner sides, to the region, and connected, at second respective outer sides, to a respective remainder of the plate, wherein the region is within both the first slot group and the second slot group, wherein the region is laterally displaceable within the plate in a first direction via force applied to the spring mechanism of the pair of slot spring mechanisms, and the region is laterally displaceable within the plate in a second direction perpendicular to the first direction, via respective force applied to a respective spring mechanism of the second pair of slot spring mechanisms. ### Claim 9 (depends on 1) The device of claim 1, wherein the pair of slot spring mechanisms are biased to a rest position. ### Claim 10 (depends on 1) The device of claim 1, further comprising an adjustment mechanism configured to move, or apply force to, one slot spring mechanism, of the pair of slot spring mechanisms, to laterally displace the region within the plate in a movement direction. ### Claim 11 (depends on 10) The device of claim 10, wherein the adjustment mechanism comprises a threaded adjustment screw, wherein an end of the threaded adjustment screw is mated to the region, adjacent the one slot spring mechanism, of the pair of slot spring mechanisms, via one or more pins, such that the one slot spring mechanism, of the pair of slot spring mechanisms is movable via push or pull movement via the end of the threaded adjustment screw. ### Claim 12 (depends on 1) The device of claim 1, further comprising: a rotatable area comprising one or more slots nested inside the pair of slot spring mechanisms and the pair of slot spring mechanisms, the region comprising the rotatable area, and the light-modulator-mounting position being inside the rotatable area; and a threaded adjustment screw, wherein an end of the threaded adjustment screw is positioned off-center from the rotatable area, the end of the threaded adjustment screw configured to rotate the rotatable area when the threaded adjustment screw is turned. ### Claim 13 (depends on 12) The device of claim 12, wherein the end of the threaded adjustment screw is mated to the rotatable area via one or more pins, such that the rotatable area is rotatable via push or pull movement via the end of the threaded adjustment screw. ### Claim 14 (depends on 1) The device of claim 1, wherein the plate comprises regions of reduced cross-sectional area located at locations joining the slot spring mechanisms and the pair of connecting slots.