Title :
Focusing mirror with tunable eccentricity
Author :
Sturmer, Michael ; Wapler, Matthias C. ; Brunne, J. ; Wallrabe, U.
Author_Institution :
IMTEK, Univ. of Freiburg, Freiburg, Germany
Abstract :
We present a new kind of varifocal mirror with independently adjustable curvatures in the major directions. For actuation we use two stacked piezo bending actuators with crossed in-plane polarization. This mirror can be used for example as an off-axis focusing device with tunable focal length and compensation for a variable angle of incidence or for coma correction. We demonstrate the prototype of such a mirror and characterize the mechanical deflection, as well as the focusing capabilities.
Keywords :
actuators; compensation; light polarisation; mirrors; optical focusing; optical tuning; coma correction; compensation; crossed in-plane polarization; independently adjustable curvatures; mechanical deflection; optical focusing; stacked piezo bending actuators; tunable eccentricity; tunable focal length; varifocal mirror; Actuators; Adaptive optics; Electrodes; Focusing; Mirrors; Piezoelectric polarization; Piezoelectric transducers;
Conference_Titel :
Optical MEMS and Nanophotonics (OMN), 2013 International Conference on
Conference_Location :
Kanazawa
Print_ISBN :
978-1-4799-1512-5
DOI :
10.1109/OMN.2013.6659108
