Variable-focus lens with 1-kHz bandwidth

被引：87

作者：

Oku, H

Hashimoto, K

Ishikawa, M

机构：

[1] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

[2] Tohoku Univ, Grad Sch Informat Sci, Dept Syst Informat Sci, Aoba Ku, Sendai, Miyagi 9808579, Japan

[3] Univ Tokyo, Grad Sch Informat Sci & Technol, Dept Informat Phys & Comp, Bunkyo Ku, Tokyo 1138656, Japan

来源：

OPTICS EXPRESS | 2004年 / 12卷 / 10期

关键词：

Actuators - Bandwidth - Elasticity - Frequency response - Optical devices - Optimization - Scanning;

D O I：

10.1364/OPEX.12.002138

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：2138 / 2149

页数：12

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