Variable aperture stop based on the design of a single chamber silicone membrane lens with integrated actuation

摘要

In this Letter we report on the fabrication and testing of an extremely thin variable aperture stop based on the design of a single chamber adaptive membrane lens with integrated actuation. The aperture consists of a ring-shaped piezoelectric bending actuator with an elastic silicone membrane in the center. The formed cavity is filled with a nontransparent fluid and sealed with a glass platelet. In a voltage range up to 80V, an opening of the aperture of 4.55mm in diameter is obtained. The transmission in comparison to a standard mechanical aperture stop is maximum 6percent lower.