All-liquid dual-lens optofluidic zoom system

An all-liquid optical zoom system based on two independently controllable liquid lenses positioned inside a single sealed cylindrical housing is demonstrated. This system yielded a zoom ratio of 1.5 for an object distance of 200 mm, an image distance 37 mm, and a corresponding resolution of better than 5 line pairs/mm. With a diameter of 5 mm, a packaged system length of 9.88 mm, and a power consumption of 3.5 mW, the system represents a new generation of ultra-miniaturized optofluidic systems with high functionality, excellent imaging properties, and highly flexible tunability, all with no mechanically moving parts.