JPS527253A - Reader - Google Patents
ReaderInfo
- Publication number
- JPS527253A JPS527253A JP50083320A JP8332075A JPS527253A JP S527253 A JPS527253 A JP S527253A JP 50083320 A JP50083320 A JP 50083320A JP 8332075 A JP8332075 A JP 8332075A JP S527253 A JPS527253 A JP S527253A
- Authority
- JP
- Japan
- Prior art keywords
- reader
- rhat
- tracks
- focus
- reflection
- 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
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: In case signals recorded on tracks of the circular disc are read optically, the angle of reflection and the position of a movable mirror are changed so rhat the substantial center of incident light may pass through the focus on the image side of a focusing lens.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50083320A JPS586211B2 (en) | 1975-07-07 | 1975-07-07 | Yomitori Sochi |
DE2630381A DE2630381C2 (en) | 1975-07-07 | 1976-07-06 | Optical reader |
US05/703,021 US4198657A (en) | 1975-07-07 | 1976-07-06 | Optical disk reader with means for correcting errors due to eccentricity and time axis variations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50083320A JPS586211B2 (en) | 1975-07-07 | 1975-07-07 | Yomitori Sochi |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS527253A true JPS527253A (en) | 1977-01-20 |
JPS586211B2 JPS586211B2 (en) | 1983-02-03 |
Family
ID=13799123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50083320A Expired JPS586211B2 (en) | 1975-07-07 | 1975-07-07 | Yomitori Sochi |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS586211B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05119277A (en) * | 1991-02-04 | 1993-05-18 | Heidelberg Eng Opt Messsyst Gmbh | Image focusing device for object body |
-
1975
- 1975-07-07 JP JP50083320A patent/JPS586211B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05119277A (en) * | 1991-02-04 | 1993-05-18 | Heidelberg Eng Opt Messsyst Gmbh | Image focusing device for object body |
JP2525305B2 (en) * | 1991-02-04 | 1996-08-21 | ハイデルベルク・エンジニアリング・オプテイシエ・メスジステム・ゲーエムベーハー | Target object imaging device |
Also Published As
Publication number | Publication date |
---|---|
JPS586211B2 (en) | 1983-02-03 |
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