设计了一种基于电润湿驱动的反射镜式光导航器件。该器件由一个透明的长方体腔体、橡胶环和反射镜组成。同时对腔体内两侧导电液体施加电压时,两侧导电液体向中间涌动,中间液体高度发生变化,反射镜发生倾斜,从而改变入射光束的偏折方向,实现了光束导航功能。实验表明,光束导航角度范围可达0°~9°,响应时间约为90 ms,该器件在空间光通信和雷达探测等领域具有潜在的应用价值。

We develop a reflective-mirror-based optical tracking device actuated by the electrowetting effect. It comprises a transparent rectangular cavity, rubber ring, and mirror. When a voltage is applied to the conductive liquid on both sides of the cavity, the conductive liquid on both sides’ surges in the middle. Consequently, the height of the intermediate liquid varies and the mirror forms a tilt angle, thereby changing the deflection direction of the incident light beam, and thus realizing optical tracking. Experimental results that the beam navigation angle can reach 0°-9° with a fast response time (approximately 90 ms). The proposed device has potential applications in space optical communication and radar detection.