JPH02101321U - - Google Patents
Info
- Publication number
- JPH02101321U JPH02101321U JP612989U JP612989U JPH02101321U JP H02101321 U JPH02101321 U JP H02101321U JP 612989 U JP612989 U JP 612989U JP 612989 U JP612989 U JP 612989U JP H02101321 U JPH02101321 U JP H02101321U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- disk
- light
- objective lens
- optical head
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims 2
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989006129U JPH0713057Y2 (ja) | 1989-01-23 | 1989-01-23 | 光ヘッドの姿勢検出装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989006129U JPH0713057Y2 (ja) | 1989-01-23 | 1989-01-23 | 光ヘッドの姿勢検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02101321U true JPH02101321U (sv) | 1990-08-13 |
JPH0713057Y2 JPH0713057Y2 (ja) | 1995-03-29 |
Family
ID=31210100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989006129U Expired - Lifetime JPH0713057Y2 (ja) | 1989-01-23 | 1989-01-23 | 光ヘッドの姿勢検出装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0713057Y2 (sv) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5262403A (en) * | 1975-11-19 | 1977-05-23 | Fuji Telecasting Co Ltd | Photoelectric reproducer |
JPS59198538A (ja) * | 1983-04-25 | 1984-11-10 | Sony Corp | 光学式デイスクのピツクアツプ装置 |
-
1989
- 1989-01-23 JP JP1989006129U patent/JPH0713057Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5262403A (en) * | 1975-11-19 | 1977-05-23 | Fuji Telecasting Co Ltd | Photoelectric reproducer |
JPS59198538A (ja) * | 1983-04-25 | 1984-11-10 | Sony Corp | 光学式デイスクのピツクアツプ装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH0713057Y2 (ja) | 1995-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |