Long Stroke Wavefront Correctors for Retinal Imaging

该提案描述了一个计划，以证明一种设备的可行性，该设备将实现常规的高分辨率、高对比度视网膜成像——一种用于眼科自适应光学系统的长行程微机械变形镜。主要目标将是开发适合用作可变形镜平台的长行程mems致动器阵列，该平台将允许至少90%的人通过放大瞳孔进行衍射受限的视网膜成像。成功的长行程驱动器原型将用于第二阶段的MEMS-DM开发。第二个目标是生产一种紧凑、可调的波前校正模块，该模块结合了mems -DM、控制电子器件、扩展DM有效波前行程的新型光学倍频器，以及允许系统跨平台功能的软件驱动程序。

This proposal describes a plan to demonstrate feasibility of a device that will enable routine high-resolution, high-contrast retinal imaging - a long-stroke micromachined deformable mirror for use in ophthalmic adaptive optics systems. A principal goal will be to develop long stroke MEMS-actuator arrays suitable for use as a platform for deformable mirrors that will permit diffraction-limited retinal imaging through dilated pupils in at least 90% of the human population. Successful long-stroke actuator prototypes will be used to develop a MEMS-DM in Phase II. A second goal will be to produce a compact, adjustable wavefront correction module that combines MEMS-DMs, control electronics, a novel optical doubler that extends the DM's effective wavefront stroke, and software drivers allowing cross-platform functionality to the system. This module will provide a portable platform for insertion of MEMS-DMs into ophthalmic AO systems, and will facilitate modular insertion of the DM in retinal imaging platforms. Higher resolution retinal imaging systems will permit earlier diagnosis and treatment of retinal diseases, including diabetic retinopathy and age-related macular degeneration.