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Electrostatic micromirrors for subaperturing in an adaptive optics system |
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| Institution: | 1. Department of Automatic Test and Control, Harbin Institute of Technology, Harbin 150001, China;2. Laboratoire Conception Optimisation et Modélisation des Systèms, University de Lorraine, Metz 57070, France;3. Universit de Lorraine, CRAN, UMR 7039, 54516 Vanduvre-ls-Nancy cedex, France;4. CNRS, CRAN, UMR 7039, France;5. Laboratory of Laser Engineering and Technology, Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;6. Department of Physics, Harbin Institute of Technology, Harbin 150001, China;1. Technical University of Denmark, National Food Institute, Mørkhøj Bygade, 19, Building H, DK-2860 Søborg, Denmark;2. Technical University of Denmark, Informatics and Mathematical Modelling, Matematiktorvet, Building 303B, DK-2800 Kgs. Lyngby, Denmark |
| Abstract: | An electrostatic digital mirror device has been used to replace the lenslet array in a simple adaptive optics system. Clusters of binary pixels define the subapertures of the image plane and direct a small portion of the image onto a detector. The detector measures position shifts in the focused subaperture image caused by optical aberrations. Measurements on a digital mirror-based system and a similar lenslet-based system compare favorably to within a simple scaling factor. A subaperture system designed around a digital mirror device could aid in the development of a sequential subaperturing method that would replace the more complex schemes used in traditional adaptive optics. |
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