ISSN:
1349-9432
Keywords:
shape memory alloy
;
Ni-Ti
;
two way shape memory effect
;
alignment
;
pinhole
;
photodetector
;
feedback control
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Properties of the shape memory alloy of 29 μm thick Ni-Ti foil are investigated as an actuator to align optical elements. Since the intrinsic properties of the Ni-Ti foil are not satisfactory in reproducibility and hysteresis, a simple feedback control is used. A pinhole integrated with a surrounding position sensor is proposed to realize a confocal optical system having an automatic alignment function. Large displacement (mm) and precision at the level of the optical wavelength are found to be possible.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s10043-997-0584-1
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