JPS6218831U - - Google Patents
Info
- Publication number
- JPS6218831U JPS6218831U JP11001985U JP11001985U JPS6218831U JP S6218831 U JPS6218831 U JP S6218831U JP 11001985 U JP11001985 U JP 11001985U JP 11001985 U JP11001985 U JP 11001985U JP S6218831 U JPS6218831 U JP S6218831U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- groove
- light source
- pitch
- measuring device
- 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 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Manufacturing Optical Record Carriers (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11001985U JPS6218831U (tr) | 1985-07-18 | 1985-07-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11001985U JPS6218831U (tr) | 1985-07-18 | 1985-07-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6218831U true JPS6218831U (tr) | 1987-02-04 |
Family
ID=30988650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11001985U Pending JPS6218831U (tr) | 1985-07-18 | 1985-07-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6218831U (tr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02247840A (ja) * | 1989-03-20 | 1990-10-03 | Nec Corp | 光ディスク基板 |
JPH03198225A (ja) * | 1989-12-26 | 1991-08-29 | Sanyo Electric Co Ltd | 光学式再生装置 |
-
1985
- 1985-07-18 JP JP11001985U patent/JPS6218831U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02247840A (ja) * | 1989-03-20 | 1990-10-03 | Nec Corp | 光ディスク基板 |
JPH03198225A (ja) * | 1989-12-26 | 1991-08-29 | Sanyo Electric Co Ltd | 光学式再生装置 |