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AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsHo-Cheol Lee, Yong-Han Yoon, Ho-Seop Jeong
Estimating the term…
An optical pickup actuator performing the triaxial driving operation includes an objective lens through which a laser beam is focused on an optical disk, a blade mounted with tracking coils and focusing coils and a plurality of tilting magnets, a yoke plate having inside and outside yokes mounted with tracking and focusing magnets and also having a tilting yoke being spaced-apart from the inside and outside yokes, a plurality of suspension wires disposed on both sides of the blade to be electrically coupled to the tracking coils and focusing coils, a wire holder having a plurality of coupling elements through which each portion of the suspension wires passes, a yoke receptacle disposed between the coupling elements of the yoke plate to receive the tilting yoke, and a printed circuit board mounted on the holder to be electrically coupled to the suspension wires, and a tilting coil mounted on the wire holder and disposed in the yoke receptacle to generate an electromagnetic force.
An optical pickup actuator performing a triaxial driving operation, comprising:
An optical pickup actuator performing a triaxial driving operation, comprising:
An optical pickup actuator performing a triaxial driving operation, comprising:
An optical pickup actuator performing a triaxial driving operation, comprising:
An optical pickup actuator performing a triaxial driving operation, comprising:
Dependencies are inferred from the claim text.
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Electromechanical actuators for lens positioning: details of the moving parts
Electromechanical actuators for lens positioning: details of sprung supports
Electromechanical actuators for lens positioning: details of stationary parts
Specially adapted for discs, e.g. for compensation of eccentricity or wobble: to compensate for tilt, skew, warp or inclination of the disc, i.e.…
Term end not estimated
This application claims the benefit of Korean Application No. 2002-19610, filed Apr. 11, 2002, in the Korean Industrial Property Office, the disclosure of which is incorporated herein by reference.
1. Filed of the Invention
The present invention relates to a triaxial driving apparatus in an optical pickup actuator performing a triaxial driving operation, and more particularly, to an optical pickup actuator having an objective lens, through which a laser beam is impinged on and reflected from a disk, and a triaxial driving apparatus simultaneously performing focusing, tacking, and tilting operations without interfering with each other to precisely move the objective lens with respect to the disk.
These and other objects and advantages of the present invention will become apparent and more readily appreciated from the following description of the preferred embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a perspective view of a conventional moving magnet type optical driving actuator;
FIG. 2 is a perspective view of a conventional moving coil type optical pickup actuator;
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.
Referring now to FIGS. 5 through 10, FIG. 5 is a perspective view of an optical pickup actuator performing a triaxial driving operation according to an embodiment of the present invention, FIG. 6 is an exploded view of the optical pickup actuator of FIG. 5, FIG. 7 is a plan view showing a tilting operation during a tracking operation performed by the optical pickup actuator, and FIG. 8 is a partial perspective view explaining the tilting operation and a current generated between the tilting magnet and the tilting coil according to the optical pickup actuator of FIG. 5.
The optical pickup actuator performing the triaxial driving operation according includes an objective lens 11 through which a laser beam is focused on an optical disk, a blade 10 mounted with tracking coils 12 and focusing coils 13 at corresponding front and side portions thereof and with a plurality of tilting magnets 15 at a rear side portion thereof, a yoke plate 20 having inside and outside yokes 22 mounted with tracking and focusing magnets 21 and also having a tilting yoke 23 formed at a position being spaced-apart from the inside and outside yokes 22 in a direction of forming the inside and outside yokes 22 on the blade 10, a plurality of suspension wires 30 disposed on longitudinal opposite sides of the blade 20 to be electrically coupled to the tracking coils 12 and focusing coils 12, a wire holder 40 having a plurality of coupling elements 41 through which each portion of the suspension wires 30 passes, a yoke receptacle 42 disposed between the coupling elements 41 at a front portion of the yoke plate 20 to receive the tilting yoke 23, and a printed circuit board (PCB) 43 mounted on a rear side of the wire holder 40 to be electrically coupled to the suspension wires 30, and a tilting coil 50 disposed around the tilting yoke 23 and around a circumference of the yoke receptacle 42 to generate an electromagnetic force to the tilting magnet 15.