JPS648518A - Actuator for optical head - Google Patents

Actuator for optical head

Info

Publication number
JPS648518A
JPS648518A JP16416287A JP16416287A JPS648518A JP S648518 A JPS648518 A JP S648518A JP 16416287 A JP16416287 A JP 16416287A JP 16416287 A JP16416287 A JP 16416287A JP S648518 A JPS648518 A JP S648518A
Authority
JP
Japan
Prior art keywords
magnet
cylinder
coil
face
high speed
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
JP16416287A
Other languages
Japanese (ja)
Inventor
Hiroshi Ito
Tatsuya Shimoda
Mitsuhiro Horikawa
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 JP16416287A priority Critical patent/JPS648518A/en
Publication of JPS648518A publication Critical patent/JPS648518A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To improve the high speed response by making a guide cylinder light so as to reduce the weight of the moving part thereby increasing number of effective turns of a coil. CONSTITUTION:A guide cylinder 9 is provided with a magnet, so-called a radial anisotropic magnet 6 with a magnetization vector in a direction perpendicularly to the face of cylinder. Then yokes 7, 8 are formed to clip the cylinder face from the inner and outer sides of the cylinder and a tracking servo coil 4 and a focusing servo coil 5 are mounted to the face of the outer yoke 8 opposed to the magnet 6. Moreover, a thin extruded magnet is used for the radial anisotropic magnet 6. The weight of the moving part is reduced to decrease the inductance of the coil in this way thereby applying high speed response.
JP16416287A 1987-07-01 1987-07-01 Actuator for optical head Pending JPS648518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16416287A JPS648518A (en) 1987-07-01 1987-07-01 Actuator for optical head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16416287A JPS648518A (en) 1987-07-01 1987-07-01 Actuator for optical head

Publications (1)

Publication Number Publication Date
JPS648518A true JPS648518A (en) 1989-01-12

Family

ID=15787906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16416287A Pending JPS648518A (en) 1987-07-01 1987-07-01 Actuator for optical head

Country Status (1)

Country Link
JP (1) JPS648518A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01158629A (en) * 1987-07-27 1989-06-21 Seiko Epson Corp Actuator
JPH01294234A (en) * 1987-08-27 1989-11-28 Seiko Epson Corp Actuator
US5442490A (en) * 1992-01-27 1995-08-15 Sharp Kabushiki Kaisha Objective lens driving apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01158629A (en) * 1987-07-27 1989-06-21 Seiko Epson Corp Actuator
JPH01294234A (en) * 1987-08-27 1989-11-28 Seiko Epson Corp Actuator
US5442490A (en) * 1992-01-27 1995-08-15 Sharp Kabushiki Kaisha Objective lens driving apparatus

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