JPS6421770A - Optical head feeding device - Google Patents
Optical head feeding deviceInfo
- Publication number
- JPS6421770A JPS6421770A JP17581987A JP17581987A JPS6421770A JP S6421770 A JPS6421770 A JP S6421770A JP 17581987 A JP17581987 A JP 17581987A JP 17581987 A JP17581987 A JP 17581987A JP S6421770 A JPS6421770 A JP S6421770A
- Authority
- JP
- Japan
- Prior art keywords
- optical head
- electrostrictive element
- driving force
- generating
- electrostrictive
- 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
Links
Landscapes
- Moving Of Heads (AREA)
Abstract
PURPOSE:To dispense with a magnetic flux generating part, to simplify construction, and to miniaturize a device thereby by generating a driving force only by an electrostrictive element. CONSTITUTION:In order to move an optical head 1 extending over the recording area of a disk 30, a voltage is impressed to the electrostrictive element 29, and the length of the electrostrictive element 29 is changed by an electrostrictive effect, and a movable pin base 26 and a pin 25 are moved to the direction of an arrow mark A. Thus, because the driving force to move the optical head is obtained only from the electrostrictive element 29, the generating mechanism of the driving force can be extremely simplified, and the device can be made small, light and low-cost, and besides, a magnetic circuit in an objective lens drive part mounted on the optical head, and the magnetic flux never interfere.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17581987A JPS6421770A (en) | 1987-07-16 | 1987-07-16 | Optical head feeding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17581987A JPS6421770A (en) | 1987-07-16 | 1987-07-16 | Optical head feeding device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6421770A true JPS6421770A (en) | 1989-01-25 |
Family
ID=16002780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17581987A Pending JPS6421770A (en) | 1987-07-16 | 1987-07-16 | Optical head feeding device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6421770A (en) |
-
1987
- 1987-07-16 JP JP17581987A patent/JPS6421770A/en active Pending
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