Summary
We describe existing concepts for CMOS3-based Hartmann-Shack wavefront sensors and propose the next step for a further miniaturization of adaptive optics by integrating the modal wavefront reconstruction on chip. In conventional Hartmann-Shack wavefront sensing a CCD4 camera is placed on the focal plane of a microlens array. The spot pattern in the focal plane is captured, analyzed by image processing and the wavefront is often decomposed into orthogonal modes, usually expressed in coe.cients of Zernike polynomials. The single-chip modal wavefront reconstructor would include all these processing steps in a single chip. We propose to use already existing CMOS-based wavefront sensor concepts and add a hardware arti.cial neural network for modal wavefront reconstruction.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
D.W. de Lima Monteiro, G. Vdovin, P.M. Sarro: High-speed wavefront sensor compatible with standard CMOS technology. To be published in Sensors and Actuators A (2004)
D. Droste, J. Bille: An ASIC for Hartmann-Shack wavefront detection. IEEE J. Sol. State Circ. 37 (2002)
T. Nirmaier, G. Pudasaini, J. Bille: Very fast wavefront measurements at the human eye with a custom CMOS-based Hartmann-Shack sensor. Opt. Express 11, 2704 (2003), http: //www.opticsexpress.org/abstract.cfm?URI=OPEX-11-21-2704
D.W. de Lima Monteiro, T. Nirmaier: CMOS technology in Hartmann-Shack wavefront sensing. In: U. Wittrock (ed.): Proceedings of the 4th International Workshop on Adaptive Optics for Industry and Medicine, October 19–24, 2003, Münster, Germany (Springer, Berlin Heidelberg 2005)
M. LLoyd-Hart, P. Wizinowich, B. McLeod, D. Wittman, D. Colucci, R. Dekany, D. McCarthy, J. Angel, D. Sandler: First results of an on-lineadaptive optics system with atmospheric wavefront sensing by an artificial neural network. Astrophys. J. 390, L41 (1992)
G. Vdovin: Model of an adaptive optical system controlled by a neural network. Opt. Eng. 34(11), 3249 (1995)
R. Brockie, M. Wells, P. Gallan, G. Aitken: Predictors in the servo-loop of an AO system. Adaptive Optical System Technologies, Kona, Hawaii 1998. SPIE 3353
D.G. Sandler, T.K. Barret, D.A. Palmer, R.Q. Fugate, W.J. Wild: Use of a neural network to control an adaptive optics system for an astronomical telescope. Nature 351, 300
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Nirmaier, T., Pudasaini, G., Diez, C.A., Bille, J., de Lima Monteiro, D. (2005). Single-Chip Neural Network Modal Wavefront Reconstruction for Hartmann-Shack Wavefront Sensors. In: Wittrock, U. (eds) Adaptive Optics for Industry and Medicine. Springer Proceedings in Physics, vol 102. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-28867-8_17
Download citation
DOI: https://doi.org/10.1007/3-540-28867-8_17
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-23978-9
Online ISBN: 978-3-540-28867-1
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)