TY - JOUR
T1 - Biomimetic variable-focus lens system controlled by winding-type SMA actuator
AU - Choi, Jong Moon
AU - Son, Hyung Min
AU - Lee, Yun Jung
PY - 2009/5/11
Y1 - 2009/5/11
N2 - Inspired by the biomechanics of the human eye, which includes a crystalline lens, ciliary muscles, and zonular fibers, the proposed variable- focus lens system consists of a PDMS lens, winding-type SMA actuator, and load arms. The PDMS lens is encircled and stretched by the load arms joined to an outer ring that is rotated by the winding-type SMA actuator, thereby changing the focal length of the lens. In contrast to other single tunable-focus lenses, the proposed system uses a gel-type PDMS lens, which is insensitive to gravity and external vibration, and can be made into a biconvex or aspheric shape. The design of the proposed system is described in detail, and experimental results demonstrate the validity of the proposed system.
AB - Inspired by the biomechanics of the human eye, which includes a crystalline lens, ciliary muscles, and zonular fibers, the proposed variable- focus lens system consists of a PDMS lens, winding-type SMA actuator, and load arms. The PDMS lens is encircled and stretched by the load arms joined to an outer ring that is rotated by the winding-type SMA actuator, thereby changing the focal length of the lens. In contrast to other single tunable-focus lenses, the proposed system uses a gel-type PDMS lens, which is insensitive to gravity and external vibration, and can be made into a biconvex or aspheric shape. The design of the proposed system is described in detail, and experimental results demonstrate the validity of the proposed system.
UR - http://www.scopus.com/inward/record.url?scp=66449083526&partnerID=8YFLogxK
U2 - 10.1364/OE.17.008152
DO - 10.1364/OE.17.008152
M3 - Article
C2 - 19434147
AN - SCOPUS:66449083526
SN - 1094-4087
VL - 17
SP - 8152
EP - 8164
JO - Optics Express
JF - Optics Express
IS - 10
ER -