2012 Fiscal Year Final Research Report
Milliseconds-response optical lenses and high-speed optical devices using ultrasound
| Project/Area Number |
23760220
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Doshisha University (2012)
Tokyo Institute of Technology (2011) |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 可変焦点レンズ / 光学レンズ / 超音波 / ソフトアクチュエータ / 圧電材料 |
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| Research Abstract |
An ultrasonic variable optical focus lens which utilizes the refractive index difference of two immiscible liquids was developed. The profile of interface between the two liquids can change by radiation force of ultrasound so that the lens can act as a variable focus lens. The focal point could be controlled by the driving voltage, and the shortest response time of 6.7 ms could be achieved. The confocal image could be captured by sweeping the focal point in the light axis at 1 kHz. Three dimensional focal scanning could be also achieved by non-axisymmetric sound pressure field.
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