Next Article in Journal
Printed and Flexible Capacitive Pressure Sensor with Carbon Nanotubes based Composite Dielectric Layer
Previous Article in Journal
Thermally Developing Flow and Heat Transfer in Elliptical Minichannels with Constant Wall Temperature
Open AccessFeature PaperArticle

Lorentz Force Actuated Tunable-Focus Liquid Lens

1
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
2
Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
3
Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
4
Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
5
McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI 53706, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Micromachines 2019, 10(10), 714; https://doi.org/10.3390/mi10100714
Received: 8 October 2019 / Revised: 18 October 2019 / Accepted: 21 October 2019 / Published: 22 October 2019
Tunable-focus liquid lenses provide focal length tuning for optical systems, e.g., cameras, where physical movement of rigid lenses are not an option or not preferable. In this work we present a magnetically actuated liquid lens utilizing the Lorentz force to vary the focal length as the current through the system is varied. The resulting lens can operate as both a diverging and a converging lens depending on the direction of current applied and has a large range of focal lengths, from −305 mm to –111 mm and from 272 mm to 146 mm. We also characterized the aberrations of the lens during the actuation with a Shack–Hartmann wavefront sensor, and utilized the lens for imaging, during which we measured a resolution of 7.13 lp/mm. View Full-Text
Keywords: tunable lens; liquid lens; magnetic actuator; optofluidics tunable lens; liquid lens; magnetic actuator; optofluidics
Show Figures

Figure 1

MDPI and ACS Style

Van Grinsven, K.L.; Ousati Ashtiani, A.; Jiang, H. Lorentz Force Actuated Tunable-Focus Liquid Lens. Micromachines 2019, 10, 714.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop