JPH01154513U - - Google Patents
Info
- Publication number
- JPH01154513U JPH01154513U JP4918988U JP4918988U JPH01154513U JP H01154513 U JPH01154513 U JP H01154513U JP 4918988 U JP4918988 U JP 4918988U JP 4918988 U JP4918988 U JP 4918988U JP H01154513 U JPH01154513 U JP H01154513U
- Authority
- JP
- Japan
- Prior art keywords
- wavelength
- pregroove
- optical disk
- pits
- optical
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4918988U JPH01154513U (fr) | 1988-04-12 | 1988-04-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4918988U JPH01154513U (fr) | 1988-04-12 | 1988-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01154513U true JPH01154513U (fr) | 1989-10-24 |
Family
ID=31275305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4918988U Pending JPH01154513U (fr) | 1988-04-12 | 1988-04-12 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01154513U (fr) |
-
1988
- 1988-04-12 JP JP4918988U patent/JPH01154513U/ja active Pending
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