JPS642015A - Oscillating mirror device - Google Patents
Oscillating mirror deviceInfo
- Publication number
- JPS642015A JPS642015A JP15821987A JP15821987A JPS642015A JP S642015 A JPS642015 A JP S642015A JP 15821987 A JP15821987 A JP 15821987A JP 15821987 A JP15821987 A JP 15821987A JP S642015 A JPS642015 A JP S642015A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- induced electromotive
- electromotive force
- mutually induced
- generated
- 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
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To lessen the deterioration in the gain in the high-frequency range of a moving body part and to execute stable tracking control by using the mutually induced electromotive force of a 3rd coil to decrease the mutually induced electromotive force of a 2nd coil and feeding the same negatively to the 1st coil.
CONSTITUTION: A reflecting means 1 and the coil 8 turn and the induced electromotive force proportional to the interlinkage speed with a magnetic gap is generated at both ends thereof and the mutually induced electromotive force is generated with a change in the current of the coil 6 if the current is impressed to the coil 6. The mutually induced electromotive force increases with an increase in the frequency. The mutually induced electromotive force similar to the mutually induced electromotive force of the coil 8 is generated in the coil 10 as well. A difference between the mutually induced electromotive forces generated between the coils 8 and 10 is obtd. and is fed back negatively to the coil 6. As a result, the stable tracking control is executed.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15821987A JPS642015A (en) | 1987-06-25 | 1987-06-25 | Oscillating mirror device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15821987A JPS642015A (en) | 1987-06-25 | 1987-06-25 | Oscillating mirror device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH012015A JPH012015A (en) | 1989-01-06 |
JPS642015A true JPS642015A (en) | 1989-01-06 |
Family
ID=15666885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15821987A Pending JPS642015A (en) | 1987-06-25 | 1987-06-25 | Oscillating mirror device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS642015A (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04243029A (en) * | 1991-01-16 | 1992-08-31 | Canon Inc | Turning mirror device for tracking |
US6108118A (en) * | 1998-07-09 | 2000-08-22 | Olympus Optical Co., Ltd. | Optical deflector |
US6278682B1 (en) | 1997-11-08 | 2001-08-21 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical system for optical disc drive |
US6285484B1 (en) * | 1997-06-27 | 2001-09-04 | Asahi Kogaku Kogyo Kabushiki Kaisha | Rotation detecting system for galvano mirror |
US6292447B1 (en) | 1997-10-24 | 2001-09-18 | Asahi Kogaku Kogyo Kabushiki Kaisha | Head for optical disc drive |
US6324141B2 (en) | 1997-10-24 | 2001-11-27 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical system for optical disc drive |
US6333910B1 (en) | 1997-10-31 | 2001-12-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical system for optical disc drive |
US6341106B1 (en) | 1997-11-05 | 2002-01-22 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical disc drive |
US6344917B1 (en) | 1997-10-17 | 2002-02-05 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
US6376953B1 (en) | 1997-06-27 | 2002-04-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
US6404715B1 (en) | 1997-10-06 | 2002-06-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Detecting system for detecting rotation angle of deflection mirror |
US6404485B1 (en) | 1997-10-24 | 2002-06-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Rotation amount detecting system of deflection mirror for optical disc drive |
US6407975B1 (en) | 1998-03-16 | 2002-06-18 | Asahi Kogaku Kogyo Kabushiki Kaisha Of Tokyo | Optical disk drive |
US6411588B1 (en) | 1997-09-12 | 2002-06-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data recording/reproducing device |
US6421156B1 (en) | 1997-10-17 | 2002-07-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
US6424068B2 (en) | 1997-06-27 | 2002-07-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
EP1191678A3 (en) * | 2000-09-26 | 2003-01-15 | Olympus Optical Co., Ltd. | Apparatus and method for driving actuator |
US6529465B2 (en) | 1997-06-26 | 2003-03-04 | Pentax Corporation | Optical system for optical disk drive |
EP1289115A1 (en) * | 2001-08-29 | 2003-03-05 | Olympus Optical Co., Ltd. | Drive apparatus and drive method for electromagnetic drive actuator |
US6650604B1 (en) | 1997-12-27 | 2003-11-18 | Pentax Corporation | Optical head of disk drive |
-
1987
- 1987-06-25 JP JP15821987A patent/JPS642015A/en active Pending
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04243029A (en) * | 1991-01-16 | 1992-08-31 | Canon Inc | Turning mirror device for tracking |
US6529465B2 (en) | 1997-06-26 | 2003-03-04 | Pentax Corporation | Optical system for optical disk drive |
US6376953B1 (en) | 1997-06-27 | 2002-04-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
US6424068B2 (en) | 1997-06-27 | 2002-07-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
US6285484B1 (en) * | 1997-06-27 | 2001-09-04 | Asahi Kogaku Kogyo Kabushiki Kaisha | Rotation detecting system for galvano mirror |
US6327066B2 (en) | 1997-06-27 | 2001-12-04 | Asahi Kogaku Kogyo Kabushiki Kaisha | Rotation detecting system for galvano mirror |
US6411588B1 (en) | 1997-09-12 | 2002-06-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data recording/reproducing device |
US6404715B1 (en) | 1997-10-06 | 2002-06-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Detecting system for detecting rotation angle of deflection mirror |
US6421156B1 (en) | 1997-10-17 | 2002-07-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
US6344917B1 (en) | 1997-10-17 | 2002-02-05 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
US6404485B1 (en) | 1997-10-24 | 2002-06-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Rotation amount detecting system of deflection mirror for optical disc drive |
US6324141B2 (en) | 1997-10-24 | 2001-11-27 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical system for optical disc drive |
US6292447B1 (en) | 1997-10-24 | 2001-09-18 | Asahi Kogaku Kogyo Kabushiki Kaisha | Head for optical disc drive |
US6333910B1 (en) | 1997-10-31 | 2001-12-25 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical system for optical disc drive |
US6341106B1 (en) | 1997-11-05 | 2002-01-22 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical disc drive |
US6278682B1 (en) | 1997-11-08 | 2001-08-21 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical system for optical disc drive |
US6650604B1 (en) | 1997-12-27 | 2003-11-18 | Pentax Corporation | Optical head of disk drive |
US6407975B1 (en) | 1998-03-16 | 2002-06-18 | Asahi Kogaku Kogyo Kabushiki Kaisha Of Tokyo | Optical disk drive |
US6108118A (en) * | 1998-07-09 | 2000-08-22 | Olympus Optical Co., Ltd. | Optical deflector |
EP1191678A3 (en) * | 2000-09-26 | 2003-01-15 | Olympus Optical Co., Ltd. | Apparatus and method for driving actuator |
EP1289115A1 (en) * | 2001-08-29 | 2003-03-05 | Olympus Optical Co., Ltd. | Drive apparatus and drive method for electromagnetic drive actuator |
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