Novel concept for large deformable mirrors
(2006) In Optical Engineering 45(7).- Abstract
- Large, high-bandwidth deformable mirrors (DMs) with thousands of actuators for adaptive optics are of high interest for existing large telescopes and indispensable for construction of efficient future extremely large telescopes. Different actuation and sensing principles are possible. We propose a novel concept using commercially available voice coil actuators attached to the back of the mirror with suction cups and using LVDT sensors on the actuators for local stabilization. Also, a new low-cost sensor for easy measurement of DM displacement or velocity has been developed. It has a sensitivity better than 20 nm and a bandwidth wider than 20 to 1000 Hz. Finally, studies are in progress of global, hierarchical mirror form controllers based... (More)
- Large, high-bandwidth deformable mirrors (DMs) with thousands of actuators for adaptive optics are of high interest for existing large telescopes and indispensable for construction of efficient future extremely large telescopes. Different actuation and sensing principles are possible. We propose a novel concept using commercially available voice coil actuators attached to the back of the mirror with suction cups and using LVDT sensors on the actuators for local stabilization. Also, a new low-cost sensor for easy measurement of DM displacement or velocity has been developed. It has a sensitivity better than 20 nm and a bandwidth wider than 20 to 1000 Hz. Finally, studies are in progress of global, hierarchical mirror form controllers based on many parallel multiple-input, multiple-output regulators of low order. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/399379
- author
- Andersen, Torben LU ; Garpinger, Olof LU ; Owner-Petersen, Mette LU ; Bjoorn, Fredrik ; Svahn, Roger and Ardeberg, Arne LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- actuators, mirrors, adaptive optics, active optics, wavefront, telescopes, compensation
- in
- Optical Engineering
- volume
- 45
- issue
- 7
- publisher
- SPIE
- external identifiers
-
- wos:000239347200008
- scopus:33749405210
- ISSN
- 0091-3286
- DOI
- 10.1117/1.2227014
- language
- English
- LU publication?
- yes
- id
- 20bf48b6-96a7-43c1-a60b-134dded6cdfb (old id 399379)
- date added to LUP
- 2016-04-01 16:18:08
- date last changed
- 2024-04-11 21:20:03
@article{20bf48b6-96a7-43c1-a60b-134dded6cdfb,
abstract = {{Large, high-bandwidth deformable mirrors (DMs) with thousands of actuators for adaptive optics are of high interest for existing large telescopes and indispensable for construction of efficient future extremely large telescopes. Different actuation and sensing principles are possible. We propose a novel concept using commercially available voice coil actuators attached to the back of the mirror with suction cups and using LVDT sensors on the actuators for local stabilization. Also, a new low-cost sensor for easy measurement of DM displacement or velocity has been developed. It has a sensitivity better than 20 nm and a bandwidth wider than 20 to 1000 Hz. Finally, studies are in progress of global, hierarchical mirror form controllers based on many parallel multiple-input, multiple-output regulators of low order.}},
author = {{Andersen, Torben and Garpinger, Olof and Owner-Petersen, Mette and Bjoorn, Fredrik and Svahn, Roger and Ardeberg, Arne}},
issn = {{0091-3286}},
keywords = {{actuators; mirrors; adaptive optics; active optics; wavefront; telescopes; compensation}},
language = {{eng}},
number = {{7}},
publisher = {{SPIE}},
series = {{Optical Engineering}},
title = {{Novel concept for large deformable mirrors}},
url = {{http://dx.doi.org/10.1117/1.2227014}},
doi = {{10.1117/1.2227014}},
volume = {{45}},
year = {{2006}},
}