December 2007
Volume 7, Issue 15
Free
OSA Fall Vision Meeting Abstract  |   December 2007
Simulation and experimental demonstration of a linearized adaptive optics control loop
Author Affiliations
  • Kaccie Li
    School of Optometry, University of California, CA, USA
  • Sandipan Mishra
    Mechanical Engineering, University of California, CA, USA
  • Austin Roorda
    School of Optometry, University of California, CA, USA
Journal of Vision December 2007, Vol.7, 79. doi:10.1167/7.15.79
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to Subscribers Only
      Sign In or Create an Account ×
    • Get Citation

      Kaccie Li, Sandipan Mishra, Austin Roorda; Simulation and experimental demonstration of a linearized adaptive optics control loop. Journal of Vision 2007;7(15):79. doi: 10.1167/7.15.79.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose: To construct an MEMS-based AO system for testing wavefront reconstruction and control algorithms specific for the human eye and to develop an accurate computer simulation of the system. Methods: Seven static aberration profiles were produced and measured on the real and simulated DMs. The DM used has 141 actuators of which 19 are non-functional. The same characteristics were assigned to the simulated DM (Vogel and Yang, JOSA A 2006). DM responses were linearized by operating the controller (an integrator with anti-windup) in units proportional to voltage-squared. Comparisons were made between the proposed controller and the standard integral controller of most AO systems. Results: Deflection curves for the simulated DM correlate well to those provided by the manufacturer: r2 = 0.996, 0.990 and 0.968 for a single actuator, a single edge actuator and a 3 by 3 block of actuators. A 15 to 40 percent improvement in the root-mean-squared (rms) of the compensated wavefront error was observed for 5 of the 7 eyes. Sub-0.1 um rms was achieved for all eyes that were initially below 0.8 um rms. Conclusions: The simulated and actual DMs showed similar behavior throughout the study. The proposed controller performed better than the standard integrator.

Li, K. Y. Sandipan, M. Roorda, A. (2007). Simulation and experimental demonstration of a linearized adaptive optics control loop [Abstract]. Journal of Vision, 7(15):79, 79a, http://journalofvision.org/7/15/79/, doi:10.1167/7.15.79. [CrossRef]
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×