JPH0246916U - - Google Patents
Info
- Publication number
- JPH0246916U JPH0246916U JP12424288U JP12424288U JPH0246916U JP H0246916 U JPH0246916 U JP H0246916U JP 12424288 U JP12424288 U JP 12424288U JP 12424288 U JP12424288 U JP 12424288U JP H0246916 U JPH0246916 U JP H0246916U
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving
- focus error
- receiving element
- light receiving
- 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
- 238000001514 detection method Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988124242U JPH0728578Y2 (ja) | 1988-09-22 | 1988-09-22 | 光学ヘッド |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988124242U JPH0728578Y2 (ja) | 1988-09-22 | 1988-09-22 | 光学ヘッド |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0246916U true JPH0246916U (en]) | 1990-03-30 |
| JPH0728578Y2 JPH0728578Y2 (ja) | 1995-06-28 |
Family
ID=31373805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988124242U Expired - Lifetime JPH0728578Y2 (ja) | 1988-09-22 | 1988-09-22 | 光学ヘッド |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0728578Y2 (en]) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61258339A (ja) * | 1985-05-13 | 1986-11-15 | Matsushita Electric Ind Co Ltd | 光学的記録再生装置 |
-
1988
- 1988-09-22 JP JP1988124242U patent/JPH0728578Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61258339A (ja) * | 1985-05-13 | 1986-11-15 | Matsushita Electric Ind Co Ltd | 光学的記録再生装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0728578Y2 (ja) | 1995-06-28 |
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