JPH0557649B2 - - Google Patents
Info
- Publication number
- JPH0557649B2 JPH0557649B2 JP8019187A JP8019187A JPH0557649B2 JP H0557649 B2 JPH0557649 B2 JP H0557649B2 JP 8019187 A JP8019187 A JP 8019187A JP 8019187 A JP8019187 A JP 8019187A JP H0557649 B2 JPH0557649 B2 JP H0557649B2
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- coil
- optical
- optical system
- coils
- 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.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 48
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 9
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8019187A JPS63247922A (ja) | 1987-04-01 | 1987-04-01 | 光ヘツド装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8019187A JPS63247922A (ja) | 1987-04-01 | 1987-04-01 | 光ヘツド装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63247922A JPS63247922A (ja) | 1988-10-14 |
| JPH0557649B2 true JPH0557649B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-08-24 |
Family
ID=13711486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8019187A Granted JPS63247922A (ja) | 1987-04-01 | 1987-04-01 | 光ヘツド装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63247922A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015111884A1 (en) | 2014-01-22 | 2015-07-30 | Lg Electronics Inc. | Camera module and method for auto focusing thereof |
-
1987
- 1987-04-01 JP JP8019187A patent/JPS63247922A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63247922A (ja) | 1988-10-14 |