4-axis optical head lens actuator for disc tilt compensation

Author

Wang, Xiaona ; Wu, Shizeng ; Gong, Mali ; Huang, Lei

Author_Institution

Inst. of Electr. Eng., Acad. Sinica, Beijing, China

Volume

48

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

34

Lastpage

40

Abstract

As the track density and disc rotational speed of digital versatile disc (DVD) increase rapidly, a lens actuator in the optical pickup head with better performance is required. In this paper, a four-axis magnetic suspension type lens actuator is developed for use at a high information bit rate and high density recording. Except for tracking and focusing, the actuator can compensate the tilt angle of the disc. The prototype of the actuator is fabricated, and the experimental results compared with the analysis results show that the new actuator can achieve small tilt angle and the tilt angle is linear with the current of the coils

Keywords

actuators; lenses; optical disc storage; video recording; 4-axis optical head lens actuator; DVD; digital versatile disc; disc tilt compensation; high density recording; information bit rate; magnetic suspension type lens actuator; optical pickup head; Bit rate; DVD; Hydraulic actuators; Lenses; Magnetic analysis; Magnetic heads; Magnetic levitation; Magnetic recording; Optical recording; Prototypes;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2002.1010089

Filename

1010089