Optimization of the Lens Holder and Yoke for a Near-Field Optical Pickup Actuator to Enhance Frequency Response

Author

Peng, Ming-Tsan ; Huang, Hai-Jo ; Wu, Chun-te ; Lee, Kwen-Jin ; Yang, Lei-Ming ; Chang, Chi-Shen ; Ke, Chau-Yuan ; Wang, Shyh-Jier ; Jeng, Tzuan-Ren ; Ju, Jau-Jiu

Author_Institution

Ind. Technol. Res. Inst., Hsinchu

Volume

43

Issue

2

fYear

2007

Firstpage

793

Lastpage

795

Abstract

A four-wire voice-coil actuator is designed and optimized for use in a near-field optical drive. The first objective was to design a lens holder which could accommodate a large-size lens module while possessing a strong mechanical structure. The second objective was to optimize the yoke so that the magnetic field would be uniform within the stroke range of the voice coils. These improvements eventually helped to improve the bandwidth of the frequency response of the actuator

Keywords

coils; disc drives; electromagnetic actuators; frequency response; magnetic lenses; optical disc storage; optimisation; enhance frequency response; four-wire voice-coil actuator; lens holder; magnetic field; near-field optical drive; near-field optical pickup actuator; Actuators; Coils; DVD; Design optimization; Frequency response; Lenses; Magnetic fields; Optical design; Optimization methods; Tracking; Actuator; near-field; optical drive;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.888415

Filename

4069058