Three-point-supported 2-DOF large-area tilting mirror inspired by a playground facility

In this paper, we demonstrate a three-point-supported 2D optical scanner designed to enhance the field of view (FoV) and optical scanning angles, and facilitate the development of large mirrors (>10<i>c</i> <i>m</i>). By integrating fused deposition modeling (FDM) 3D printing with electromagnetic driving, we present a cost-effective, large-sized scanning mirror with two-dimensional scanning capabilities. The mirror has an area of 144<i>c</i> <i>m</i> ², enabling greater light capture for enhanced scanning performance. Under DC driving, the maximum optical scanning angles are 5.99° in the x direction and 12.61° in the y direction. For AC driving, the resonant scanning frequencies are 18.2 Hz for the x scan and 19 Hz for the y scan, with maximum scanning angles of 7.87° for the x scan and 7.19° for the y scan.