JPS53142203A - Focus servoodevice for optical information reader - Google Patents
Focus servoodevice for optical information readerInfo
- Publication number
- JPS53142203A JPS53142203A JP5742977A JP5742977A JPS53142203A JP S53142203 A JPS53142203 A JP S53142203A JP 5742977 A JP5742977 A JP 5742977A JP 5742977 A JP5742977 A JP 5742977A JP S53142203 A JPS53142203 A JP S53142203A
- Authority
- JP
- Japan
- Prior art keywords
- servoodevice
- focus
- optical information
- information reader
- reader
- 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
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5742977A JPS53142203A (en) | 1977-05-18 | 1977-05-18 | Focus servoodevice for optical information reader |
CA302,834A CA1131361A (en) | 1977-05-11 | 1978-05-08 | Focus servo device for use in optical read-out device of information |
US05/904,117 US4290132A (en) | 1977-05-11 | 1978-05-08 | Focus servo device for use in an optical information read-out device |
GB18388/78A GB1601275A (en) | 1977-05-11 | 1978-05-09 | Focus servo apparatus for use in an optical information reading system |
DE2820482A DE2820482C2 (en) | 1977-05-11 | 1978-05-10 | Device for focusing an optical readout system |
NLAANVRAGE7805016,A NL177259B (en) | 1977-05-11 | 1978-05-10 | AUTOMATIC DEVICE FOR USE IN AN OPTICAL INFORMATION READING SYSTEM. |
FR7814069A FR2390749A1 (en) | 1977-05-11 | 1978-05-11 | FOCUSING APPARATUS OF AN INFORMATION READING ASSEMBLY |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5742977A JPS53142203A (en) | 1977-05-18 | 1977-05-18 | Focus servoodevice for optical information reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS53142203A true JPS53142203A (en) | 1978-12-11 |
Family
ID=13055403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5742977A Pending JPS53142203A (en) | 1977-05-11 | 1977-05-18 | Focus servoodevice for optical information reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53142203A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5814236U (en) * | 1981-07-21 | 1983-01-28 | 赤井電機株式会社 | optical pickup device |
-
1977
- 1977-05-18 JP JP5742977A patent/JPS53142203A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5814236U (en) * | 1981-07-21 | 1983-01-28 | 赤井電機株式会社 | optical pickup device |
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