JPS6453357A - Lens actuator - Google Patents

Lens actuator

Info

Publication number
JPS6453357A
JPS6453357A JP21109287A JP21109287A JPS6453357A JP S6453357 A JPS6453357 A JP S6453357A JP 21109287 A JP21109287 A JP 21109287A JP 21109287 A JP21109287 A JP 21109287A JP S6453357 A JPS6453357 A JP S6453357A
Authority
JP
Japan
Prior art keywords
objective lens
magnetic flux
holding cylinder
thin cylindrical
lens holding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP21109287A
Other languages
Japanese (ja)
Inventor
Hiroshi Ito
Mitsuhiro Horikawa
Tsugio Ide
Michio Yanagisawa
Tatsuya Shimoda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP21109287A priority Critical patent/JPS6453357A/en
Publication of JPS6453357A publication Critical patent/JPS6453357A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To make feed to a movable part unnecessary, to respond to a fast operation, and to obtain a lens actuator with high reliability, by using a thin cylindrical magnet as an objective lens holding cylinder, and using a permanent magnet as the movable part. CONSTITUTION:An objective lens 3 is connected with rigidity on the objective lens holding cylinder 6 consisting of a thin cylindrical permanent magnet magnetized in a radial direction. The objective lens holding cylinder 6 performs rotational motion centering the rotation of a supporting shaft 2 by the mutual function of magnetic flux generated from a coil 4 for adjusting tracking provided in the inner local plane of a yoke part 8 and the magnetic flux generated from the thin cylindrical magnet 6. Also, the magnetic flux generated from a coil 5 for adjusting focusing provided on the inner local plane of a second yoke part 10 traverses the second yoke part 10 and a first yoke part 9. The objective lens holding cylinder 6 moves in a direction parallel with the supporting shaft 2 by the mutual function of the magnetic flux and the one generated from the thin cylindrical magnet 6. In such a way, it is possible to obtain the lens actuator without necessitating the feed to the movable part, with high reliability, and capable of performing the fast operation.
JP21109287A 1987-08-25 1987-08-25 Lens actuator Pending JPS6453357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21109287A JPS6453357A (en) 1987-08-25 1987-08-25 Lens actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21109287A JPS6453357A (en) 1987-08-25 1987-08-25 Lens actuator

Publications (1)

Publication Number Publication Date
JPS6453357A true JPS6453357A (en) 1989-03-01

Family

ID=16600280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21109287A Pending JPS6453357A (en) 1987-08-25 1987-08-25 Lens actuator

Country Status (1)

Country Link
JP (1) JPS6453357A (en)

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