JPS6466833A - Optical information recording and reproducing device - Google Patents
Optical information recording and reproducing deviceInfo
- Publication number
- JPS6466833A JPS6466833A JP22204687A JP22204687A JPS6466833A JP S6466833 A JPS6466833 A JP S6466833A JP 22204687 A JP22204687 A JP 22204687A JP 22204687 A JP22204687 A JP 22204687A JP S6466833 A JPS6466833 A JP S6466833A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- light
- central axis
- tracking actuator
- beam shift
- 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)
Abstract
PURPOSE:To ensure a stable control even if the displacement of a tracking actuator becomes large, by shifting the tracking actuator to move an objective lens and a light beam incident upon the objective lens in a perpendicular direction against a track. CONSTITUTION:A reflecting mirror 104 is installed so as to be capable of being driven in the perpendicular direction against the track by coils 112, 113 for beam shift and permanent magnets 114, 115 for beam shift, attached on it, and constitutes an actuator for beam shift. Simultaneously when objective lens 106 is driven by the tracking actuator, the light is shifted by driving this mechanism so as to make the central axis of the light coincident with the central axis of the objective lens. Thus, the central axis of the light coincides with the central axis of the objective lens, and consequently, the shading or the oblique incidence of the light is eliminated, and a device free from the problems of the deterioration of a recording characteristic, the fluctuation of a reproducing signal level, the offset of a control signal and so on can be constituted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22204687A JPS6466833A (en) | 1987-09-07 | 1987-09-07 | Optical information recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22204687A JPS6466833A (en) | 1987-09-07 | 1987-09-07 | Optical information recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6466833A true JPS6466833A (en) | 1989-03-13 |
Family
ID=16776246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22204687A Pending JPS6466833A (en) | 1987-09-07 | 1987-09-07 | Optical information recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6466833A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005088618A1 (en) * | 2004-03-03 | 2005-09-22 | Koninklijke Philips Electronics N.V. | Optical device for recording and reproducing |
WO2011118209A1 (en) * | 2010-03-25 | 2011-09-29 | パナソニック株式会社 | Optical pickup device and optical disc device |
-
1987
- 1987-09-07 JP JP22204687A patent/JPS6466833A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005088618A1 (en) * | 2004-03-03 | 2005-09-22 | Koninklijke Philips Electronics N.V. | Optical device for recording and reproducing |
WO2011118209A1 (en) * | 2010-03-25 | 2011-09-29 | パナソニック株式会社 | Optical pickup device and optical disc device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0107461B2 (en) | Optical signal reading device | |
MY114141A (en) | Objective lens driving device and optical pickup device employing the objective lens driving device. | |
MY115076A (en) | Disc recording and/or reproducing apparatus | |
EP0871163A3 (en) | Optical head with a diffractive lens | |
JPS57179954A (en) | Optical type disc player | |
JPS6466833A (en) | Optical information recording and reproducing device | |
JPS55125417A (en) | Photodetector | |
JPS57205834A (en) | Light focusing position controller | |
JPS56137538A (en) | Magneto-optical playback device | |
AU696966B2 (en) | Seek actuator for optical recording | |
JPH0728589Y2 (en) | Light pickup | |
JPS6430031A (en) | Objective lens driver | |
JPS6432434A (en) | Optical information recording and reproducing device | |
JPS6488931A (en) | Servo optical pick-up device | |
JPS6470935A (en) | Optical record reader | |
JPS5730132A (en) | Magnetooptical storage device | |
JPS57150145A (en) | Optical disc device with floating head | |
KR930009688B1 (en) | Optical head | |
JPS567245A (en) | Automatic focusing unit in optical information reproducing device | |
JPS6423428A (en) | Recording medium driver and focus tracking device in recording medium driver | |
KR970000410B1 (en) | Optical pick-up | |
JPS6236760A (en) | Recording and reproducing system | |
KR900002996B1 (en) | Recording or reproducing apparatus by optical means | |
JPS6462828A (en) | Optical head | |
JPS63117334A (en) | Optical information reproducing device |