JPS63247923A - Voice coil actuator - Google Patents

Voice coil actuator

Info

Publication number
JPS63247923A
JPS63247923A JP8164087A JP8164087A JPS63247923A JP S63247923 A JPS63247923 A JP S63247923A JP 8164087 A JP8164087 A JP 8164087A JP 8164087 A JP8164087 A JP 8164087A JP S63247923 A JPS63247923 A JP S63247923A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
pole
motion
voice coil
coil
coil actuator
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
JP8164087A
Inventor
Toshiyuki Ishibashi
Tatsuya Shimoda
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

Links

Abstract

PURPOSE: To realize complicated motion leaving a device in a simplified and miniaturized shape, by making use of a cylindrical magnet on which multipolar magnetization is applied.
CONSTITUTION: By applying the multipolar (four poles) magnetization on a cylindrical radial magnet, a coil 5 and a voice coil actuator can be obtained. And a focusing coil 1 wound on a circumference forms motion in a vertical direction (focusing direction) with an N-pole having larger pole width, and a rectangular tracking coil 2 forms the motion in a circumferential direction with the N-pole neighboring to an S-pole having narrow pole width. In other words, it is possible to realize two kinds of motion only with one cylindrical magnet. In such a way, an inexpensive voice coil actuator with a resulting high performance and miniaturization can be obtained.
COPYRIGHT: (C)1988,JPO&Japio
JP8164087A 1987-04-02 1987-04-02 Voice coil actuator Pending JPS63247923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8164087A JPS63247923A (en) 1987-04-02 1987-04-02 Voice coil actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8164087A JPS63247923A (en) 1987-04-02 1987-04-02 Voice coil actuator

Publications (1)

Publication Number Publication Date
JPS63247923A true true JPS63247923A (en) 1988-10-14

Family

ID=13751938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8164087A Pending JPS63247923A (en) 1987-04-02 1987-04-02 Voice coil actuator

Country Status (1)

Country Link
JP (1) JPS63247923A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003586A1 (en) * 1991-08-05 1993-02-18 Aura Systems, Inc. Voice coil actuator
US5321762A (en) * 1991-08-05 1994-06-14 Aura Systems, Inc. Voice coil actuator
JPH06325384A (en) * 1993-05-18 1994-11-25 Nec Corp Actuator for optical head
US6639495B2 (en) * 2001-03-12 2003-10-28 Fmc Technologies, Inc. Electromagnetic actuator for intrinsically safe devices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953071A (en) * 1983-07-28 1984-03-27 Matsushita Electric Ind Co Ltd Frequency generator for brushless dc motor
JPS6244664A (en) * 1985-08-22 1987-02-26 Toshiba Corp Rotary detector
JPS63104226A (en) * 1986-10-21 1988-05-09 Mitsubishi Electric Corp Convergent optical element drive and control device in optical pickup optical system
JPS63209032A (en) * 1987-02-24 1988-08-30 Mitsubishi Electric Corp Objective lens driver
JPS63209033A (en) * 1987-02-24 1988-08-30 Mitsubishi Electric Corp Objective lens driver

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953071A (en) * 1983-07-28 1984-03-27 Matsushita Electric Ind Co Ltd Frequency generator for brushless dc motor
JPS6244664A (en) * 1985-08-22 1987-02-26 Toshiba Corp Rotary detector
JPS63104226A (en) * 1986-10-21 1988-05-09 Mitsubishi Electric Corp Convergent optical element drive and control device in optical pickup optical system
JPS63209032A (en) * 1987-02-24 1988-08-30 Mitsubishi Electric Corp Objective lens driver
JPS63209033A (en) * 1987-02-24 1988-08-30 Mitsubishi Electric Corp Objective lens driver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003586A1 (en) * 1991-08-05 1993-02-18 Aura Systems, Inc. Voice coil actuator
US5321762A (en) * 1991-08-05 1994-06-14 Aura Systems, Inc. Voice coil actuator
JPH06325384A (en) * 1993-05-18 1994-11-25 Nec Corp Actuator for optical head
US6639495B2 (en) * 2001-03-12 2003-10-28 Fmc Technologies, Inc. Electromagnetic actuator for intrinsically safe devices

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