Variable-focus lens with 1-kHz bandwidth

摘要: This paper proposes a variable-focus lens with 1-kHz bandwidth. The transforms its shape rapidly using the liquid pressure generated by piezo stack actuator. mechanism also includes built-in motion amplifier high bandwidth to compensate for short working range of Prototypes have been developed validate proposed design. A lenses was confirmed measuring frequency responses. Refractive power ranging from -1/167 1/129 mm(-1) and maximum resolution 12.3 cycles/mm were attained.