TUNABLE SOLID-BODY ELASTOMERIC DIFFRACTIVE LENS

摘要

We present a mechanically tunable diffractive lens. The lens is fabricated by using standard photolithography in combination with a molding technique, and is made of the highly transparent silicone elastomer polydimethyl-siloxane (PDMS). The focal length is tuned by radial mechanical expansion. By using a precisely machined mechanical actuator for tuning the lens, we achieved a tunability in focal length of 20%, while the optical quality is maintained for the full tuning range.