Micromachines | 卷:8 |
Magnetic Fluid Deformable Mirror with a Two-Layer Layout of Actuators † | |
Zhu Zhang1  Junqiu Wu1  Zhizheng Wu1  Xianghui Kong1  Tao Wang1  Mei Liu1  | |
[1] Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200072, China; | |
关键词: magnetic fluid; deformable mirror; electromagnetic coil; two-layer; adaptive optics; | |
DOI : 10.3390/mi8030072 | |
来源: DOAJ |
【 摘 要 】
In this paper, a new type of magnetic fluid deformable mirror (MFDM) with a two-layer layout of actuators is proposed to improve the correction performance for full-order aberrations with a high spatial resolution. The shape of the magnetic fluid surface is controlled by the combined magnetic field generated by the Maxwell coil and the two-layer array of miniature coils. The upper-layer actuators which have a small size and high density are used to compensate for small-amplitude high-order aberrations and the lower-layer actuators which have a big size and low density are used to correct large-amplitude low-order aberrations. The analytical model of this deformable mirror is established and the aberration correction performance is verified by the experimental results. As a new kind of wavefront corrector, the MFDM has major advantages such as large stroke, low cost, and easy scalability and fabrication.
【 授权许可】
Unknown