JPS61174026U - - Google Patents
Info
- Publication number
- JPS61174026U JPS61174026U JP5632785U JP5632785U JPS61174026U JP S61174026 U JPS61174026 U JP S61174026U JP 5632785 U JP5632785 U JP 5632785U JP 5632785 U JP5632785 U JP 5632785U JP S61174026 U JPS61174026 U JP S61174026U
- Authority
- JP
- Japan
- Prior art keywords
- numerical aperture
- condensing lens
- detector
- small
- recording disk
- 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 6
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Head (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5632785U JPS61174026U (US06168655-20010102-C00055.png) | 1985-04-16 | 1985-04-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5632785U JPS61174026U (US06168655-20010102-C00055.png) | 1985-04-16 | 1985-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61174026U true JPS61174026U (US06168655-20010102-C00055.png) | 1986-10-29 |
Family
ID=30579818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5632785U Pending JPS61174026U (US06168655-20010102-C00055.png) | 1985-04-16 | 1985-04-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61174026U (US06168655-20010102-C00055.png) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996024130A1 (fr) * | 1995-01-31 | 1996-08-08 | Sony Corporation | Dispositif de reproduction d'informations sur un support d'enregistrement optique |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5369006A (en) * | 1976-11-30 | 1978-06-20 | Sony Corp | Reproducer of disc form signal recording media |
-
1985
- 1985-04-16 JP JP5632785U patent/JPS61174026U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5369006A (en) * | 1976-11-30 | 1978-06-20 | Sony Corp | Reproducer of disc form signal recording media |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996024130A1 (fr) * | 1995-01-31 | 1996-08-08 | Sony Corporation | Dispositif de reproduction d'informations sur un support d'enregistrement optique |
US6034936A (en) * | 1995-01-31 | 2000-03-07 | Sony Corporation | Optical recording medium reproducing apparatus for reproducing low density and high density recording media |