JPS6432432A - Objective lens driving device - Google Patents

Objective lens driving device

Info

Publication number
JPS6432432A
JPS6432432A JP18838187A JP18838187A JPS6432432A JP S6432432 A JPS6432432 A JP S6432432A JP 18838187 A JP18838187 A JP 18838187A JP 18838187 A JP18838187 A JP 18838187A JP S6432432 A JPS6432432 A JP S6432432A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic circuit
circuits
circuit
follow
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
JP18838187A
Other languages
Japanese (ja)
Inventor
Yutaka Mazaki
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP18838187A priority Critical patent/JPS6432432A/en
Publication of JPS6432432A publication Critical patent/JPS6432432A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To speed up a follow-up characteristic and to simplify an assembly process by constituting the magnetic circuits of first and second magnetic circuits which are arranged in series in the direction parallel to the first direction, form independently a closed magnetic circuit each other, and also, with which each magnetic gap is communicated. CONSTITUTION:A magnetic circuit is constituted of a first 110 and a second 130 magnetic circuits which are arranged in series to the direction parallel to the first direction, that is, the longitudinal direction of a guide shaft 200a and 200b, form independently a closed magnetic circuit each other, and also, with which each magnetic gap 114, 124, 134 and 144 is communicated. Accordingly, a movable body 100 is influenced by one magnetic field generated from the first or the second magnetic circuit 130, in accordance with a fact that it exists in any position in the magnetic gaps 114, 124, 134 and 144 constituted extending between the first magnetic circuit 110 and the second magnetic circuit 130, and moves in accordance with force determined by a relation of this magnetic field and a current allowed to flow to a coil of the movable part 100. In such a way, the follow-up characteristic of the high speed and the simplification of the assembly process can be realized.
JP18838187A 1987-07-28 1987-07-28 Objective lens driving device Pending JPS6432432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18838187A JPS6432432A (en) 1987-07-28 1987-07-28 Objective lens driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18838187A JPS6432432A (en) 1987-07-28 1987-07-28 Objective lens driving device

Publications (1)

Publication Number Publication Date
JPS6432432A true JPS6432432A (en) 1989-02-02

Family

ID=16222627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18838187A Pending JPS6432432A (en) 1987-07-28 1987-07-28 Objective lens driving device

Country Status (1)

Country Link
JP (1) JPS6432432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0323523A (en) * 1989-06-21 1991-01-31 Sony Corp Optical head device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0323523A (en) * 1989-06-21 1991-01-31 Sony Corp Optical head device

Similar Documents

Publication Publication Date Title
IE802461L (en) Linear magnetic motor
DE3786117D1 (en) SPRAYING CATODE ACCORDING TO THE MAGNETRON PRINCIPLE.
ATE203321T1 (en) INDUCTIVE POSITIONER
SE8006233L (en) ELECTRIC MACHINE WITH VARIABLE RELUCTION
ATE85456T1 (en) CURRENT-LIMITING SWITCHING ELEMENT.
JPS6432432A (en) Objective lens driving device
ES8501181A1 (en) Alternator
JPS5716563A (en) Electromagnetic actuator
SU792511A1 (en) Linear electric motor
BR8505539A (en) LOW-POWER COIN GUIDANCE APPLIANCE
JPS5751040A (en) Damping device for movable body performing rectilinear motion
GB2104734A (en) Diphased stepping motor
JPS55132422A (en) Double type electromagnetic clutch
SU509907A1 (en) Sorting method of magnetic contacts
SU871251A1 (en) Relay
SU811345A1 (en) Three-position change-over switch based on magnetically-operated contacts
SU436105A1 (en) RING MECHANISM
SU728179A1 (en) Off-on electromagnetic drive
SU851472A1 (en) Method of driving linear electric motor inductor
JPS5260477A (en) Hammer driving device
SU582467A1 (en) Pressure sensor
EP0463590A3 (en) Actuator for adjusting two self-holding positions
JPS5239471A (en) Magnet type ignition device
JPS5583530A (en) Electrical discharge machining device
FR2346845A1 (en) Regulating circuit for electromagnetic relay - includes oscilloscope used for visualising relay characteristic