JPS6235149Y2 - - Google Patents
Info
- Publication number
- JPS6235149Y2 JPS6235149Y2 JP1980168759U JP16875980U JPS6235149Y2 JP S6235149 Y2 JPS6235149 Y2 JP S6235149Y2 JP 1980168759 U JP1980168759 U JP 1980168759U JP 16875980 U JP16875980 U JP 16875980U JP S6235149 Y2 JPS6235149 Y2 JP S6235149Y2
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- focus servo
- amplifier
- lens driving
- servo device
- 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
Links
- 230000003287 optical effect Effects 0.000 claims 1
- 230000005669 field effect Effects 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980168759U JPS6235149Y2 (xx) | 1980-11-27 | 1980-11-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980168759U JPS6235149Y2 (xx) | 1980-11-27 | 1980-11-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5791141U JPS5791141U (xx) | 1982-06-04 |
JPS6235149Y2 true JPS6235149Y2 (xx) | 1987-09-07 |
Family
ID=29527320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1980168759U Expired JPS6235149Y2 (xx) | 1980-11-27 | 1980-11-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6235149Y2 (xx) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58128031A (ja) * | 1982-01-24 | 1983-07-30 | Sony Corp | デイスク再生装置 |
JPS5977638A (ja) * | 1982-10-26 | 1984-05-04 | Nippon Gakki Seizo Kk | 光学式デイスク再生装置におけるフオ−カスサ−ボ制御装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53110805A (en) * | 1977-03-09 | 1978-09-27 | Matsushita Electric Ind Co Ltd | Optical information recording/reproducing device |
-
1980
- 1980-11-27 JP JP1980168759U patent/JPS6235149Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53110805A (en) * | 1977-03-09 | 1978-09-27 | Matsushita Electric Ind Co Ltd | Optical information recording/reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPS5791141U (xx) | 1982-06-04 |
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