Ultra-Fast and Compact Varifocal Lens

We present the, to our knowledge, so far fastest deformable lens, with a response time of 100 to 200 μs and a clear aperture of 7.6 mm at 9 mm outer diameter (84%). This is achieved using transparent compliant elastomer structures with an index-matched optical fluid and an actuator covering just 11% of the diameter that we bond in a two-stage gluing process using a gas phase curing agent.