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Automatic Alignment of Optical System Using Shape Memory Alloy (1997)

Sasaki, Minoru ; Arai, Yuji ; Hane, Kazuhiro

Springer

Optical review 4 (1997), S. 584-587

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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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