JPS648519A - Objective lens driver - Google Patents
Objective lens driverInfo
- Publication number
- JPS648519A JPS648519A JP16446687A JP16446687A JPS648519A JP S648519 A JPS648519 A JP S648519A JP 16446687 A JP16446687 A JP 16446687A JP 16446687 A JP16446687 A JP 16446687A JP S648519 A JPS648519 A JP S648519A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- same direction
- magnetic flux
- objective lens
- lens driver
- 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
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To obtain an objective lens driver having a high drive sensitivity and low coil resistance by interlinking an external magnetic flux with plural parts of a flat coil so as to generate a torque in the same direction. CONSTITUTION:In considering one flat coil 8A (8B), the flat coil 22 becomes a magnetic circuit 20 being an open magnetic circuit 7A (7B) at two parts of regions 21A, 21B to interlink with the magnetic flux generated by the circuit 20 to cause torques f1, f2 in the same direction. Thus, the coil is interlinked with the magnetic flux at plural position of the flat coil to generate the torque in the same direction thereby improving the drive sensitivity. Moreover, the coil part receiving magnetism from the magnetic circuit is increased and the coil is utilized effectively, then the resistance of coil is decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16446687A JPS648519A (en) | 1987-06-30 | 1987-06-30 | Objective lens driver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16446687A JPS648519A (en) | 1987-06-30 | 1987-06-30 | Objective lens driver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648519A true JPS648519A (en) | 1989-01-12 |
Family
ID=15793714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16446687A Pending JPS648519A (en) | 1987-06-30 | 1987-06-30 | Objective lens driver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648519A (en) |
-
1987
- 1987-06-30 JP JP16446687A patent/JPS648519A/en active Pending
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