JPS536001A - Focus location detector for optical recording medium - Google Patents
Focus location detector for optical recording mediumInfo
- Publication number
- JPS536001A JPS536001A JP7981976A JP7981976A JPS536001A JP S536001 A JPS536001 A JP S536001A JP 7981976 A JP7981976 A JP 7981976A JP 7981976 A JP7981976 A JP 7981976A JP S536001 A JPS536001 A JP S536001A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- optical recording
- location detector
- focus location
- focus
- 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
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To detect with high precision the location of the focal plane of a data record disk, by enlarging the movement of the light beams on a photodetector element surface.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7981976A JPS536001A (en) | 1976-07-07 | 1976-07-07 | Focus location detector for optical recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7981976A JPS536001A (en) | 1976-07-07 | 1976-07-07 | Focus location detector for optical recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS536001A true JPS536001A (en) | 1978-01-20 |
Family
ID=13700802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7981976A Pending JPS536001A (en) | 1976-07-07 | 1976-07-07 | Focus location detector for optical recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS536001A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01151428U (en) * | 1988-04-06 | 1989-10-19 |
-
1976
- 1976-07-07 JP JP7981976A patent/JPS536001A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01151428U (en) * | 1988-04-06 | 1989-10-19 |
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