High-Speed Focus Scanning by an Acoustic Variable-Focus Liquid Lens

被引：16
作者：
Koyama, Daisuke [1 ]
Isago, Ryoichi [1 ]
Nakamura, Kentaro [1 ]
机构：
[1] Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2011年 / 50卷 / 07期
基金：
日本科学技术振兴机构;
关键词：
RADIATION PRESSURE; PARTIAL CONTACT; FREE-VIBRATIONS; SUPPORT; FORCE; DROP;
D O I：
10.1143/JJAP.50.07HE26
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The high-speed scanning of a focal point by a variable-focus liquid lens is discussed. We have investigated a high-speed variable-focus liquid lens using acoustic radiation force. It consists of a cylindrical aluminum cell with a diameter of 6 mm and a thickness of 3 mm filled with water, silicone oil, and an ultrasound transducer. The oil-water interface can be deformed and the focal point can be changed by controlling input voltage. By exciting with an amplitude modulation (AM) signal, the vibration on the oil-water interface synchronized with the modulation wave was generated. The vibration displacement amplitude decreased with an inverse proportion of f(0.66) over 100 Hz, which is close to the resonance frequency of the lens. The path of the laser beam transmitted through the lens was calculated by ray-tracing simulations. The lens could scan at focal lengths of from 7.0 to 14.5 mm at 1 kHz in the axial direction. (C) 2011 The Japan Society of Applied Physics
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页数：5
相关论文
共 23 条
[1]   Variable focal lens controlled by an external voltage: An application of electrowetting [J].
Berge, B ;
Peseux, J .
EUROPEAN PHYSICAL JOURNAL E, 2000, 3 (02) :159-163
[2]   ACOUSTIC RADIATION PRESSURE PRODUCED BY A BEAM OF SOUND [J].
CHU, BT ;
APFEL, RE .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1982, 72 (06) :1673-1687
[3]   Adaptive liquid microlenses activated by stimuli-responsive hydrogels [J].
Dong, Liang ;
Agarwal, Abhishek K. ;
Beebe, David J. ;
Jiang, Hongrui .
NATURE, 2006, 442 (7102) :551-554
[4]  
Goldberg ZA., 1971, ACOUSTIC RAD PRESSUR
[5]   Emulsion Generating Microchannel Device Oscillated by 2.25MHz Ultrasonic Vibrator [J].
Harada, Takuya ;
Kanda, Takefumi ;
Suzumori, Koichi ;
Ono, Tsutomu ;
Iwabuchi, Sotaro ;
Ito, Kazuyuki ;
Ogawara, Ken-ichi ;
Higaki, Kazutaka .
JAPANESE JOURNAL OF APPLIED PHYSICS, 2010, 49 (07)
[6]   The acoustic radiation pressure in liquids. [J].
Hertz, G. ;
Mende, H. .
ZEITSCHRIFT FUR PHYSIK, 1939, 114 (5-6) :354-367
[7]   OPTICAL COHERENCE TOMOGRAPHY [J].
HUANG, D ;
SWANSON, EA ;
LIN, CP ;
SCHUMAN, JS ;
STINSON, WG ;
CHANG, W ;
HEE, MR ;
FLOTTE, T ;
GREGORY, K ;
PULIAFITO, CA ;
FUJIMOTO, JG .
SCIENCE, 1991, 254 (5035) :1178-1181
[8]   Liquid Lens Using Acoustic Radiation Force [J].
Koyama, Daisuke ;
Isago, Ryoichi ;
Nakamura, Kentaro .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2011, 58 (03) :596-602
[9]   Compact, high-speed variable-focus liquid lens using acoustic radiation force [J].
Koyama, Daisuke ;
Isago, Ryoichi ;
Nakamura, Kentaro .
OPTICS EXPRESS, 2010, 18 (24) :25158-25169
[10]   Noncontact Self-Running Ultrasonically Levitated Two-Dimensional Stage Using Flexural Standing Waves [J].
Koyama, Daisuke ;
Nakamura, Kentaro .
JAPANESE JOURNAL OF APPLIED PHYSICS, 2009, 48 (07)
123