Abstract
A novel micro-focusing stage for optical pick-up head application was demonstrated. The presented micro-focusing stage for optical pick-up head is consisted of four parts: out-of-plane actuator, connecting joint, through hole, and focusing lens plate. To characterize the optical performance of this micro stage, the focusing test using a 650nm laser beam was performed. This stage demonstrates the possibility of using piston motion to tune the focal length and tilt motion to compensate deviation of disk.