OBJECTIVE LENS DRIVE, OPTICAL PICKUP AND INFORMATION RECORDING AND REPRODUCING APPARATUS

PROBLEM TO BE SOLVED: To improve the drive sensitivity of an objective lens by effectively utilizing a magnetic field generated by drive magnets. SOLUTION: A set of drive magnets 19 sufficiently large for the width of an objective lens holding member 16 for holding the objective lens 17 are fixed to...

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Bibliographische Detailangaben
Hauptverfasser:	YANG HYUN-SEOK, LEE DONG-JU, SONG MYEONG-GYU, PARK NOOL, AKANUMA GOICHI
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve the drive sensitivity of an objective lens by effectively utilizing a magnetic field generated by drive magnets. SOLUTION: A set of drive magnets 19 sufficiently large for the width of an objective lens holding member 16 for holding the objective lens 17 are fixed to one side and the other side of the objective lens holding member 16 so that both ends are projected. Then, drive coils 22A, 22B, 23A and 23B are disposed to both of the facing surface side facing each other of the drive magnets 19 fixed to the objective lens holding member 16 and the surface side opposite to the facing surface, and the magnetic field generated by the drive magnets 19 is effectively utilized. Thus, the objective lens holding member 16 can be driven with high sensitivity. COPYRIGHT: (C)2008,JPO&INPIT