Title :
Tunable solid-body elastomeric diffractive lens
Author :
Sun, Y. ; Thiele, S. ; Liebetraut, P. ; Mönch, W. ; Zappe, H.
Author_Institution :
Dept. of Microsyst. Eng.-IMTEK, Univ. of Freiburg, Freiburg, Germany
Abstract :
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.
Keywords :
elastomers; lenses; optical tuning; photolithography; machined mechanical actuator; molding technique; photolithography; radial mechanical expansion; transparent silicone elastomer polydimethyl-siloxane; tunable solid-body elastomeric diffractive lens; Cameras; Fabrication; Laser beams; Lenses; Optical diffraction; Optical imaging; Strain; Diffractive lens; Diffractive optical element; Fresnel zone plate; Molding; Tunable lens;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969749
