Kiveste, Harti ; Haus, Henry ; Gatti, Davide ; Schlaak, Helmut F. ; Aabloo, Alvo ; Kiefer, Rudolf (2014)
Autofocus Fluid Lens Device with Implementation of Dielectric Electroactive Polymer Actuators.
ACTUATOR14, 14th International Conference on New Actuators and 8th International Exhibition on Smart Actuators and Drive Systems. Bremen, Germany (23.Jun.-25.Jun. 2014)
Conference or Workshop Item
Abstract
We produced an autofocus liquid lens based on meniscus changes of an oil/water interface caused by fieldinduced deformation of a dielectric elastomer stack actuator (DESA). The new DESA design integrated in the liquid lens is based on a circular actuator with a round hole in the middle (diameter: 4 mm) where the oil/water interface is located. Due to the surface tension between the two immiscible liquids (oil/water) a meniscus forms in proximity of the hole of the actuator membrane that can operate as a lens. The goal of this research was to apply and investigate encapsulated dielectric elastomer actuators (DEA) in liquid environments for producing a prototype autofocus lens. When the DEA membrane is applied a high voltage, the hole dimension changes by contraction of the DEA membrane, together with the curvature of the meniscus formed between oil and water. Consequently, the focus plane of a laser beam passing through the liquid lens changes. Configurations with DESA actuator or single-layered membranes are tested. Depending on the DEA membrane thicknesses (45 to 100 μm), the maximum applied voltage varied from 1150 to 2250 V.
| Item Type: | Conference or Workshop Item |
|---|---|
| Erschienen: | 2014 |
| Creators: | Kiveste, Harti ; Haus, Henry ; Gatti, Davide ; Schlaak, Helmut F. ; Aabloo, Alvo ; Kiefer, Rudolf |
| Type of entry: | Bibliographie |
| Title: | Autofocus Fluid Lens Device with Implementation of Dielectric Electroactive Polymer Actuators |
| Language: | English |
| Date: | 23 June 2014 |
| Event Title: | ACTUATOR14, 14th International Conference on New Actuators and 8th International Exhibition on Smart Actuators and Drive Systems |
| Event Location: | Bremen, Germany |
| Event Dates: | 23.Jun.-25.Jun. 2014 |
| Abstract: | We produced an autofocus liquid lens based on meniscus changes of an oil/water interface caused by fieldinduced deformation of a dielectric elastomer stack actuator (DESA). The new DESA design integrated in the liquid lens is based on a circular actuator with a round hole in the middle (diameter: 4 mm) where the oil/water interface is located. Due to the surface tension between the two immiscible liquids (oil/water) a meniscus forms in proximity of the hole of the actuator membrane that can operate as a lens. The goal of this research was to apply and investigate encapsulated dielectric elastomer actuators (DEA) in liquid environments for producing a prototype autofocus lens. When the DEA membrane is applied a high voltage, the hole dimension changes by contraction of the DEA membrane, together with the curvature of the meniscus formed between oil and water. Consequently, the focus plane of a laser beam passing through the liquid lens changes. Configurations with DESA actuator or single-layered membranes are tested. Depending on the DEA membrane thicknesses (45 to 100 μm), the maximum applied voltage varied from 1150 to 2250 V. |
| Uncontrolled Keywords: | liquid lens, dielectric elastomer transducers |
| Divisions: | 18 Department of Electrical Engineering and Information Technology > Microtechnology and Electromechanical Systems 18 Department of Electrical Engineering and Information Technology > Institute for Electromechanical Design (dissolved 18.12.2018) 18 Department of Electrical Engineering and Information Technology |
| Date Deposited: | 17 Feb 2015 08:08 |
| Last Modified: | 17 Feb 2015 08:08 |
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