JPH0462565B2 - - Google Patents
Info
- Publication number
- JPH0462565B2 JPH0462565B2 JP60018933A JP1893385A JPH0462565B2 JP H0462565 B2 JPH0462565 B2 JP H0462565B2 JP 60018933 A JP60018933 A JP 60018933A JP 1893385 A JP1893385 A JP 1893385A JP H0462565 B2 JPH0462565 B2 JP H0462565B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light source
- optical
- objective lens
- objective
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 48
- 239000002131 composite material Substances 0.000 claims description 2
- 230000004075 alteration Effects 0.000 description 27
- 238000003384 imaging method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Lenses (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60018933A JPS61177410A (ja) | 1985-02-01 | 1985-02-01 | 光情報記録媒体の記録再生用対物レンズ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60018933A JPS61177410A (ja) | 1985-02-01 | 1985-02-01 | 光情報記録媒体の記録再生用対物レンズ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61177410A JPS61177410A (ja) | 1986-08-09 |
| JPH0462565B2 true JPH0462565B2 (cs) | 1992-10-06 |
Family
ID=11985436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60018933A Granted JPS61177410A (ja) | 1985-02-01 | 1985-02-01 | 光情報記録媒体の記録再生用対物レンズ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61177410A (cs) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07122691B2 (ja) * | 1986-06-30 | 1995-12-25 | 株式会社三協精機製作所 | 光デイスク用レンズ |
| JP2013130466A (ja) * | 2011-12-21 | 2013-07-04 | Hitachi Ltd | 電磁波可視化装置 |
-
1985
- 1985-02-01 JP JP60018933A patent/JPS61177410A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61177410A (ja) | 1986-08-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |