JPS6172718U - - Google Patents
Info
- Publication number
- JPS6172718U JPS6172718U JP15478584U JP15478584U JPS6172718U JP S6172718 U JPS6172718 U JP S6172718U JP 15478584 U JP15478584 U JP 15478584U JP 15478584 U JP15478584 U JP 15478584U JP S6172718 U JPS6172718 U JP S6172718U
- Authority
- JP
- Japan
- Prior art keywords
- light
- recording medium
- focus control
- refractive index
- lens
- 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 7
- 201000009310 astigmatism Diseases 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15478584U JPS6172718U (enExample) | 1984-10-12 | 1984-10-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15478584U JPS6172718U (enExample) | 1984-10-12 | 1984-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6172718U true JPS6172718U (enExample) | 1986-05-17 |
Family
ID=30712778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15478584U Pending JPS6172718U (enExample) | 1984-10-12 | 1984-10-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6172718U (enExample) |
-
1984
- 1984-10-12 JP JP15478584U patent/JPS6172718U/ja active Pending
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