JPS5237404A - Optical recorder/player - Google Patents
Optical recorder/playerInfo
- Publication number
- JPS5237404A JPS5237404A JP50114120A JP11412075A JPS5237404A JP S5237404 A JPS5237404 A JP S5237404A JP 50114120 A JP50114120 A JP 50114120A JP 11412075 A JP11412075 A JP 11412075A JP S5237404 A JPS5237404 A JP S5237404A
- Authority
- JP
- Japan
- Prior art keywords
- player
- optical recorder
- erasing
- recording
- different
- 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
Abstract
PURPOSE: To surely perform recording and erasing by providing a lens switching device having two projecting lenses with different focal distances for the purpose that the size of a beam spot formed on a record material is different with the cases of recording and erasing.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50114120A JPS5817978B2 (en) | 1975-09-19 | 1975-09-19 | Kogaku Tekikiki Rokusai Seisouchi |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50114120A JPS5817978B2 (en) | 1975-09-19 | 1975-09-19 | Kogaku Tekikiki Rokusai Seisouchi |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5237404A true JPS5237404A (en) | 1977-03-23 |
JPS5817978B2 JPS5817978B2 (en) | 1983-04-11 |
Family
ID=14629628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50114120A Expired JPS5817978B2 (en) | 1975-09-19 | 1975-09-19 | Kogaku Tekikiki Rokusai Seisouchi |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5817978B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0712122A2 (en) * | 1994-11-10 | 1996-05-15 | Olympus Optical Co., Ltd. | Information recording and/or reproducing apparatus |
-
1975
- 1975-09-19 JP JP50114120A patent/JPS5817978B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0712122A2 (en) * | 1994-11-10 | 1996-05-15 | Olympus Optical Co., Ltd. | Information recording and/or reproducing apparatus |
EP0712122A3 (en) * | 1994-11-10 | 1997-03-05 | Olympus Optical Co | Information recording and/or reproducing apparatus |
EP0829864A2 (en) * | 1994-11-10 | 1998-03-18 | Olympus Optical Co., Ltd. | Information recording and/or reproducing apparatus |
EP0829864A3 (en) * | 1994-11-10 | 1999-03-24 | Olympus Optical Co., Ltd. | Information recording and/or reproducing apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5817978B2 (en) | 1983-04-11 |
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