Hartmann-shack method is widely used in adaptive optics system for wavefront sensing. A data processing system is used in the sensor for computing wavefront gradient, wavefront reconstruction and control. To get a wide control bandwidth, the system speed should be high enough and the time delay should be as short as possible. In this paper, a multiprocessor system for a 37-element Hartmann-Shack Wavefront Sensor (H-S WFS) is presented. The main computation is completed by 4 processing modules in parallel, and the data acquisition, processing and communication are conducted in pipeline. The system can process video signal at 380 frames/sec and the time delay is less than 1/8 of frame period.

Date Published: 25 August 1993
PDF: 8 pages
Proc. SPIE 1920, Active and Adaptive Optical Components and Systems II, (25 August 1993); doi: 10.1117/12.152667

Published in SPIE Proceedings Vol. 1920:
Active and Adaptive Optical Components and Systems II
Mark A. Ealey, Editor(s)