| Issue |
2010
|
|
|---|---|---|
| Article Number | 06005 | |
| Number of page(s) | 4 | |
| Section | Deformable mirrors | |
| DOI | https://doi.org/10.1051/ao4elt/201006005 | |
| Published online | 24 February 2010 | |
Electromagnetic DM technology meets future AO demands
1
TNO Science and Industry, Stieltjesweg 1, P.O.Box 155, 2600 AD Delft, The Netherlands
2
Technische Universiteit Eindhoven, Den Dolech 2, 5600 MB Eindhoven, The Netherlands
a e-mail: r.hamelinck@tno.nl
New deformable mirror technology is developed by the Technische Universiteit Eindhoven, Delft University of Technology and TNO Science and Industry. Several prototype adaptive deformable mirrors are realized mirrors, up to 427 actuators and ∅150mm diameter, with characteristics suitable for future AO systems. The prototypes consist of a 100µm thick, continuous facesheet on which low voltage, electromagnetic, push-pull actuators impose out-of-plane displacements. The variable reluctance actuators with ±10µm stroke and nanometer resolution are located in a standard actuator module. Each module with 61 actuators connects to a single PCB with dedicated, 16 bit, PWM based, drivers. A LVDS multi-drop cable connects up to 32 actuator modules. With the actuator module, accompanying PCB and multi-drop system the deformable mirror technology is made modular in its mechanics and electronics. An Ethernet-LVDS bridge enables any commercial PC to control the mirror using the UDP standard. Latest results of the deformable mirror technology development are presented.
© Owned by the authors, published by EDP Sciences, 2010