JPS6449132A - Optical information recording and reproducing device - Google Patents
Optical information recording and reproducing deviceInfo
- Publication number
- JPS6449132A JPS6449132A JP62204979A JP20497987A JPS6449132A JP S6449132 A JPS6449132 A JP S6449132A JP 62204979 A JP62204979 A JP 62204979A JP 20497987 A JP20497987 A JP 20497987A JP S6449132 A JPS6449132 A JP S6449132A
- Authority
- JP
- Japan
- Prior art keywords
- actuator
- bobbin
- movable part
- objective lens
- information recording
- 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)
- Optical Head (AREA)
Abstract
PURPOSE:To detect the position of an objective lens without exerting bad influence upon actuator operation characteristics by means of a simple constitution by fitting a light reflecting means to a movable part of an actuator and fitting photodetecting sensors to its non-movable part. CONSTITUTION:A mirror part 4 is fitted on a bobbin 1 to be the movable part of the actuator and two-divided optical sensors 6a, 6b for detecting reflected light from the mirror part 4 are arranged on the non-movable part of the actuator. An optical beam 5 from a light source is reflected by the mirror part 4, the reflected light is detected by the optical sensors 6a, 6b to obtain the rotating position of the bobbin 1, i.e. the tracking direction of the objective lens 3, from an amplifier 7. Since no influence is exerted upon the weight of the bobbin 1 and an optical sensor lead line or the like from the bobbin 1 can be omitted, the position of the objective lens can be detected by the simple constitution without exerting bad influence upon the operating characteristics of the actuator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204979A JPS6449132A (en) | 1987-08-20 | 1987-08-20 | Optical information recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62204979A JPS6449132A (en) | 1987-08-20 | 1987-08-20 | Optical information recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6449132A true JPS6449132A (en) | 1989-02-23 |
Family
ID=16499460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62204979A Pending JPS6449132A (en) | 1987-08-20 | 1987-08-20 | Optical information recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6449132A (en) |
-
1987
- 1987-08-20 JP JP62204979A patent/JPS6449132A/en active Pending
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