JPS642015A - Oscillating mirror device - Google Patents

Oscillating mirror device

Info

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
Application number
JP15821987A
Other languages
Japanese (ja)
Other versions
JPH012015A (en
Inventor
Hajime Yamamoto
Shinichi Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62-158219A priority Critical patent/JPH012015A/en
Priority claimed from JP62-158219A external-priority patent/JPH012015A/en
Publication of JPS642015A publication Critical patent/JPS642015A/en
Publication of JPH012015A publication Critical patent/JPH012015A/en
Pending legal-status Critical Current

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
JP62-158219A 1987-06-25 Vibrating mirror device Pending JPH012015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-158219A JPH012015A (en) 1987-06-25 Vibrating mirror device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-158219A JPH012015A (en) 1987-06-25 Vibrating mirror device

Publications (2)

Publication Number Publication Date
JPS642015A true JPS642015A (en) 1989-01-06
JPH012015A JPH012015A (en) 1989-01-06

Family

ID=

Cited By (20)

* Cited by examiner, † Cited by third party
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

Cited By (21)

* Cited by examiner, † Cited by third party
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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