JPH01177419U - - Google Patents
Info
- Publication number
- JPH01177419U JPH01177419U JP7224688U JP7224688U JPH01177419U JP H01177419 U JPH01177419 U JP H01177419U JP 7224688 U JP7224688 U JP 7224688U JP 7224688 U JP7224688 U JP 7224688U JP H01177419 U JPH01177419 U JP H01177419U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- objective lens
- optical head
- disk
- heating element
- 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
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7224688U JPH01177419U (cs) | 1988-05-31 | 1988-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7224688U JPH01177419U (cs) | 1988-05-31 | 1988-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01177419U true JPH01177419U (cs) | 1989-12-19 |
Family
ID=31297417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7224688U Pending JPH01177419U (cs) | 1988-05-31 | 1988-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01177419U (cs) |
-
1988
- 1988-05-31 JP JP7224688U patent/JPH01177419U/ja active Pending
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