JPS5231622A - Optical information reader - Google Patents
Optical information readerInfo
- Publication number
- JPS5231622A JPS5231622A JP51070308A JP7030876A JPS5231622A JP S5231622 A JPS5231622 A JP S5231622A JP 51070308 A JP51070308 A JP 51070308A JP 7030876 A JP7030876 A JP 7030876A JP S5231622 A JPS5231622 A JP S5231622A
- Authority
- JP
- Japan
- Prior art keywords
- optical information
- information reader
- light beam
- minimization
- optical
- 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
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: Minimization of the optical information reader by controlling the focus according to the variations of the light beam width vertical to the junction direction of the differential photoelectric element to receive the light beam irradiated on the information disc along the optical axis of the converging lens.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51070308A JPS5231622A (en) | 1976-06-15 | 1976-06-15 | Optical information reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51070308A JPS5231622A (en) | 1976-06-15 | 1976-06-15 | Optical information reader |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3356375A Division JPS51122344A (en) | 1975-03-20 | 1975-03-20 | Beam control unit of optical information read-out equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5231622A true JPS5231622A (en) | 1977-03-10 |
JPS564970B2 JPS564970B2 (en) | 1981-02-02 |
Family
ID=13427694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51070308A Granted JPS5231622A (en) | 1976-06-15 | 1976-06-15 | Optical information reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5231622A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5444166A (en) * | 1977-09-13 | 1979-04-07 | Showa Seisakushiyo Kk | Hydraulic baffer |
JPS5462461A (en) * | 1977-10-27 | 1979-05-19 | Showa Seisakushiyo Kk | Oil pressure shock absorber |
JPS5586941A (en) * | 1978-12-26 | 1980-07-01 | Showa Mfg Co Ltd | Hydraulic buffer |
JPS5632153U (en) * | 1979-08-20 | 1981-03-28 | ||
JPS5850630A (en) * | 1981-09-18 | 1983-03-25 | Katayama Yoshitaka | Signal detector in optical information reader |
-
1976
- 1976-06-15 JP JP51070308A patent/JPS5231622A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5444166A (en) * | 1977-09-13 | 1979-04-07 | Showa Seisakushiyo Kk | Hydraulic baffer |
JPS5541381B2 (en) * | 1977-09-13 | 1980-10-23 | ||
JPS5462461A (en) * | 1977-10-27 | 1979-05-19 | Showa Seisakushiyo Kk | Oil pressure shock absorber |
JPS5720501B2 (en) * | 1977-10-27 | 1982-04-28 | ||
JPS5586941A (en) * | 1978-12-26 | 1980-07-01 | Showa Mfg Co Ltd | Hydraulic buffer |
JPS5632153U (en) * | 1979-08-20 | 1981-03-28 | ||
JPS5850630A (en) * | 1981-09-18 | 1983-03-25 | Katayama Yoshitaka | Signal detector in optical information reader |
Also Published As
Publication number | Publication date |
---|---|
JPS564970B2 (en) | 1981-02-02 |
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