Title :
MEMS-based miniature optical pickup
Author :
Chiu, Yi ; Chen, Cheng-Huan ; Chiou, Jin-Chern ; Fang, Weileun ; Shieh, Han-Ping D.
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsin Chu, Taiwan
Abstract :
The technology challenges for miniature optical pickups include high-numerical-aperture objective lens design, servo actuator functions and performance, and component assembly tolerance. In this paper, a microelectromechanical systems (MEMS)-based miniature optical pickup is proposed for DVD and blue disk systems. A high-order diffractive objective lens with a continuous surface relief is designed. Focus, tilt, and tracking servos are implanted with MEMS micro actuators. Preliminary design and test results are presented.
Keywords :
diffractive optical elements; digital versatile discs; lenses; micromechanical devices; pick-ups; servomotors; DVD; MEMS microactuators; MEMS-based miniature optical pickup; blue disk systems; component assembly tolerance; continuous surface relief; diffractive optical element; focus servo; high-numerical-aperture objective lens design; high-order diffractive objective lens; microelectromechanical systems; servo actuator functions; tilt servo; tracking servo; Actuators; Assembly; DVD; Lenses; Microelectromechanical systems; Micromechanical devices; Optical design; Optical devices; Optical diffraction; Servomechanisms; Diffractive optical element; microelectromechanical system (MEMS); micromirror; optical pickup;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.842077
