Wavefront compensation algorithm for an adaptive optics system using an electrostatic driven deformable mirror

摘要

We fabricated a membrane deformable mirror (DM) for ophthalmologic adaptive optics and developed a novel algorithm to determine voltage of 85 electrodes of DM to compensate an arbitrary mirror shape. Voltage "templates" were created for each Zernike modes. Aberration was better cancelled using the superposition of the template in this study than the ones we reported earlier. We examined order dependence of the template superposition method and demonstrated that the compensation was improved as higher order Zernike modes were included in templates. We also applied the new algorithm to the aberration compensation directly, that is, without templates and compared the two methods. While the template superposition method provided faster modulation of DM, the direct application of the new algorithm resulted in more precise compensation. The combination of the two methods is effective in the compensation of the wavefront aberration of eyes.