JPS542704A - Optical information reproducer - Google Patents
Optical information reproducerInfo
- Publication number
- JPS542704A JPS542704A JP6823477A JP6823477A JPS542704A JP S542704 A JPS542704 A JP S542704A JP 6823477 A JP6823477 A JP 6823477A JP 6823477 A JP6823477 A JP 6823477A JP S542704 A JPS542704 A JP S542704A
- Authority
- JP
- Japan
- Prior art keywords
- optical information
- information reproducer
- detecting
- reproducer
- simplify
- 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
Abstract
PURPOSE: To simplify reproducing optical system by performing detecting of information and detecting of focal position errors of a condensing lens by a one luminous flux in an optical video disc.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6823477A JPS542704A (en) | 1977-06-08 | 1977-06-08 | Optical information reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6823477A JPS542704A (en) | 1977-06-08 | 1977-06-08 | Optical information reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS542704A true JPS542704A (en) | 1979-01-10 |
Family
ID=13367886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6823477A Pending JPS542704A (en) | 1977-06-08 | 1977-06-08 | Optical information reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS542704A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS594030A (en) * | 1982-06-16 | 1984-01-10 | ゼネラル・シグナル・コ−ポレ−シヨン | Method and device for slicing semiconductor ingot |
US4579454A (en) * | 1983-03-14 | 1986-04-01 | Rca Corporation | Optical profilometer for steep surface contours with significant surface tilt |
JPH0278025A (en) * | 1988-09-14 | 1990-03-19 | Copal Co Ltd | Optical pickup device |
US5083869A (en) * | 1988-07-27 | 1992-01-28 | Hitachi, Ltd. | Photocoustic signal detecting device |
-
1977
- 1977-06-08 JP JP6823477A patent/JPS542704A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS594030A (en) * | 1982-06-16 | 1984-01-10 | ゼネラル・シグナル・コ−ポレ−シヨン | Method and device for slicing semiconductor ingot |
US4579454A (en) * | 1983-03-14 | 1986-04-01 | Rca Corporation | Optical profilometer for steep surface contours with significant surface tilt |
US5083869A (en) * | 1988-07-27 | 1992-01-28 | Hitachi, Ltd. | Photocoustic signal detecting device |
JPH0278025A (en) * | 1988-09-14 | 1990-03-19 | Copal Co Ltd | Optical pickup device |
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