Variable-focus lens with 1-kHz bandwidth
Variable-focus lens with 1-kHz bandwidth
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DOI：
10.1364/opex.12.002138
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发表时间：
2004-05-17
期刊：
影响因子：
3.8
通讯作者：
Ishikawa, M
中科院分区：
文献类型：
--
作者：
Oku, H;Hashimoto, K;Ishikawa, M
本文提出了一种带宽为1 kHz的变焦透镜。该透镜利用压电叠层致动器产生的液体压力快速变换其形状。该机构还包括一个内置的运动放大器，具有高带宽，以补偿压电堆致动器的短工作范围。原型已经开发，以验证拟议的设计。通过测量频率响应来确认透镜的1 kHz带宽。折射率范围为-1/167 ~ 1/129 mm（-1），最大分辨率为12.3周/mm。(C)2004年美国光学学会。
This paper proposes a variable-focus lens with 1-kHz bandwidth. The lens transforms its shape rapidly using the liquid pressure generated by a piezo stack actuator. This mechanism also includes a built-in motion amplifier with high bandwidth to compensate for the short working range of the piezo stack actuator. Prototypes have been developed to validate the proposed design. A 1-kHz bandwidth of the lenses was confirmed by measuring the frequency responses. Refractive power ranging from -1/167 to 1/129 mm(-1) and a maximum resolution of 12.3 cycles/mm were attained. (C) 2004 Optical Society of America.