JPH02128220U - - Google Patents
Info
- Publication number
- JPH02128220U JPH02128220U JP3570489U JP3570489U JPH02128220U JP H02128220 U JPH02128220 U JP H02128220U JP 3570489 U JP3570489 U JP 3570489U JP 3570489 U JP3570489 U JP 3570489U JP H02128220 U JPH02128220 U JP H02128220U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- apodized filter
- signal
- recording medium
- apodized
- 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 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Head (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3570489U JPH02128220U (un) | 1989-03-28 | 1989-03-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3570489U JPH02128220U (un) | 1989-03-28 | 1989-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02128220U true JPH02128220U (un) | 1990-10-23 |
Family
ID=31541288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3570489U Pending JPH02128220U (un) | 1989-03-28 | 1989-03-28 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02128220U (un) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6257135A (ja) * | 1985-09-05 | 1987-03-12 | Pioneer Electronic Corp | 光学式情報記録再生装置におけるピツクアツプ装置 |
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1989
- 1989-03-28 JP JP3570489U patent/JPH02128220U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6257135A (ja) * | 1985-09-05 | 1987-03-12 | Pioneer Electronic Corp | 光学式情報記録再生装置におけるピツクアツプ装置 |