JPH01140631U - - Google Patents
Info
- Publication number
- JPH01140631U JPH01140631U JP3784788U JP3784788U JPH01140631U JP H01140631 U JPH01140631 U JP H01140631U JP 3784788 U JP3784788 U JP 3784788U JP 3784788 U JP3784788 U JP 3784788U JP H01140631 U JPH01140631 U JP H01140631U
- Authority
- JP
- Japan
- Prior art keywords
- diffraction grating
- hologram diffraction
- substrates
- grating substrates
- base material
- 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.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 2
Landscapes
- Optical Head (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988037847U JPH0743778Y2 (ja) | 1988-03-23 | 1988-03-23 | 光磁気ピツクアツプ |
| US07/294,466 US5115423A (en) | 1988-01-07 | 1989-01-06 | Optomagnetic recording/reproducing apparatus |
| US07/833,012 US5278817A (en) | 1988-01-07 | 1992-02-10 | Optical pick-up for use with an opto-magnetic signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988037847U JPH0743778Y2 (ja) | 1988-03-23 | 1988-03-23 | 光磁気ピツクアツプ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01140631U true JPH01140631U (no) | 1989-09-26 |
| JPH0743778Y2 JPH0743778Y2 (ja) | 1995-10-09 |
Family
ID=31264421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988037847U Expired - Lifetime JPH0743778Y2 (ja) | 1988-01-07 | 1988-03-23 | 光磁気ピツクアツプ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743778Y2 (no) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62219340A (ja) * | 1986-03-20 | 1987-09-26 | Fujitsu Ltd | 光ピツクアツプ |
-
1988
- 1988-03-23 JP JP1988037847U patent/JPH0743778Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62219340A (ja) * | 1986-03-20 | 1987-09-26 | Fujitsu Ltd | 光ピツクアツプ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0743778Y2 (ja) | 1995-10-09 |