WO1984004991A1 - Apparatus for adjusting optical axis of optical pickup - Google Patents

Apparatus for adjusting optical axis of optical pickup Download PDF

Info

Publication number
WO1984004991A1
WO1984004991A1 PCT/JP1984/000276 JP8400276W WO8404991A1 WO 1984004991 A1 WO1984004991 A1 WO 1984004991A1 JP 8400276 W JP8400276 W JP 8400276W WO 8404991 A1 WO8404991 A1 WO 8404991A1
Authority
WO
WIPO (PCT)
Prior art keywords
objective lens
optical
driving device
optical axis
spherical surface
Prior art date
Application number
PCT/JP1984/000276
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Masashi Ito
Toshiki Matsuno
Hiroyuki Nakamura
Hiroshi Yasuda
Original Assignee
Matsushita Electric Ind 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 Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of WO1984004991A1 publication Critical patent/WO1984004991A1/ja

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers

Definitions

  • the present invention relates to an optical axis adjusting device for an optical bicub used in a reproducing apparatus of a type that optically reads information by projecting an optical spot onto a disk-shaped recording medium.
  • Fig. 1 shows a conventional optical pickup.
  • 1 is the objective lens
  • 2 is the objective lens 1
  • this objective lens 1 is used for tracking and focusing.
  • objective lenses driving device for ⁇ to, 3 optical pro click the objective lenses driving device 2 is mounted
  • 4 a ,. 4 b, 4 C, 4 d is the objective lenses operated device 2 and the optical Bro Tsu
  • a coil panel 5a, 5b, 5c, 5d inserted between the holes 3 for elastically holding the objective lens driving device 1 is provided at the bottom of the objective lens driving device 2.
  • Screw holes 6a, 6b, 6 ⁇ , 6d are screwed into screw holes 5a, 5b, 5c, 5d, and are used to compress coil panels 4, 4b, Ac, 4d. is there.
  • Fig. 2 shows the adjustment method of the conventional optical axis adjustment device for optical pickup.
  • T a and 7 b are the center of the objective lens
  • 8 a and 8 b are the respective optical axes
  • 9 a and 9 b are the respective optical slots.
  • an object of the present invention is to solve the conventional problems as described above and to provide an optical pick-up optical axis adjusting device that can easily and quickly adjust the tilt of an objective lens. I do.
  • the holding member of the objective lens is inclined with respect to one point inside the objective lens, in particular, a spherical surface having a center at the center of the principal plane of the lens effect of the objective lens, and the spherical surface and the spherical surface are inclined. Or because a sphere and an arc or three or more points on the same sphere slip? , Objective lens
  • OMPI This is to adjust the inclination of the noise.
  • the position of the optical slot does not change, readjustment is not required.
  • two screw holes for tilt adjustment are arranged at 90 degrees to the center of the spherical surface, and if the position of the coil panel is devised, the spherical surface will be smooth and the adjustment range will be fine. Wide, efficient and quick tilt adjustment.
  • the spherical surface is fitted into the spherical surface, the height and position of the objective lens driving device are fixed.], And assembling jigs are required at the time of assembly, so that the time for assembly and adjustment can be greatly reduced. There o
  • FIG. 1 is an exploded perspective view of a conventional optical axis adjusting device for an optical big-bub
  • FIG. 2 is a side view for explaining the operation thereof
  • FIG. 1 is an exploded perspective view of a conventional optical axis adjusting device for an optical big-bub
  • FIG. 2 is a side view for explaining the operation thereof
  • FIG. 1 is an exploded perspective view of a conventional optical axis adjusting device for an optical big-bub
  • FIG. 2 is a side view for explaining the operation thereof
  • FIG. 1 is an exploded perspective view of a conventional optical axis adjusting device for an optical big-bub
  • FIG. 4 is a side view for explaining the operation.
  • FIG. 3 shows an optical axis adjusting device for an optical big-bub according to an embodiment of the present invention. It shows.
  • reference numeral 1 denotes an objective lens
  • 2 denotes an objective lens that holds the objective lens 1
  • o a convex spherical surface formed or fixed to the bottom of the base of the objective lens drive device 2.
  • the spherical surface 1 O is constituted by a part of a hemispherical surface.
  • 3 is an optical block to which the objective lens driving device 2 is mounted, 1 1
  • This spherical surface 1 1 is also composed of a part of a hemispherical surface.
  • 4 a, 4 b, 12 a, 12 b are coilpanes, 5 a, 5 b, 5 c, 5 d are screw holes, of which screw holes 5 a, 5 b have an angle with the sphere center.
  • O 6a, 6b, 6c, 6d are screws o
  • the convex spherical surface 1 ⁇ ⁇ provided on the objective lens 2 is fitted into the concave spherical surface 11 of the optical block 3, and the objective lens driving device 2 changes the spherical surface 1 O, 1 1
  • the optical block 3 is attached so that it can rotate freely at the center of the lens.
  • the coil panels 12a and 12b are compressed by the screws 6c and 6d screwed into the screw holes 5c and 5d, and the objective lens drive 2 is moved toward the optical block 3 with a constant force.
  • the 0 coil panels 4a and 4b that are being pulled push up the objective lens driving device 2 so that the spherical surface 1O and the spherical surface 11 move smoothly without digging, and the tilt adjustment range is increased.
  • Screws 6a and 6b are screws for adjusting the tilt of the objective lens! ), The inclination of the objective lens 1 integrated with the objective lens driving device 2 is adjusted by turning these two screws.
  • the spherical 1 0 as shown in FIG. 4, 1 1 in the main plane of the lenses effect of the objective lenses 1, than centered at 7, objective lenses in all directions Even if 1 is tilted, the position of the optical spot ⁇ ⁇ does not change, and the distance between the objective lens and the disc changes as in the conventional example! ), The position of the optical slot has shifted. As a result, the tilt of the objective lens can be quickly adjusted to zero.
  • the objective lens 1 can be tilted in any direction simply by turning the two screws 6a and 6b sequentially, so that the operation is very simple. Also to receive a convex spherical surface 1 O concave spherical surface 1 1, this alone objective lenses
  • Position and height of drive unit 2 are determined. O Therefore, a jig for determining the position and height is required in assembly. In actual practice, it is only necessary to change the shape of the bottom of the base of the objective lens driving device 2 and the shape of the top of the optical block 3, and a spherical surface can be formed at the same time during molding. It's really good. io In this embodiment, the spherical surface and the spherical surface are all used. However, a cylindrical convex portion is formed at the bottom of the objective lens driving device- 2 , and this convex portion is formed at the upper portion of the optical block 3.
  • a circular concave portion may be provided in the upper part of the optical block 3 and the convex spherical surface provided in the bottom portion of the objective lens moving device may be fitted into this concave portion. 5 Good. That is, the spherical surface only needs to be at one of the bottom of the objective lens driving device and the upper portion of the optical block.
  • one spherical surface may be composed of three or more points.
  • two screws 6 c and 6 d on the non-adjustment side and two coil panels 0 12 a and 12 b are provided.
  • one screw is provided near the center of the screws 6 c and 6 d. It is also possible to simply provide a telephone and a telephone.
  • the objective lens is composed of a combination of a plurality of lenses, the same effect can be obtained if the center of the spherical surface is located at the center of the principal plane of the lens effect.
  • the optical axis of the objective lens is adjusted using a spherical surface. Therefore, the tilt of the objective lens can be easily and quickly adjusted, and the height of the objective lens can be adjusted when the tilt is adjusted.
  • the height and position of the optical robot do not change, so there is no need to readjust the height and position as before. Furthermore, since the concave and convex spherical surfaces receive other members, the height and position of the objective lens movement device are determined, so that a special mounting jig for determining the height and position is not required.
  • the tilt can be adjusted smoothly over a wide range by devising the position of the coil panel.

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
PCT/JP1984/000276 1983-06-03 1984-05-29 Apparatus for adjusting optical axis of optical pickup WO1984004991A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9972183A JPS59223953A (ja) 1983-06-03 1983-06-03 光ピツクアツプ

Publications (1)

Publication Number Publication Date
WO1984004991A1 true WO1984004991A1 (en) 1984-12-20

Family

ID=14254934

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1984/000276 WO1984004991A1 (en) 1983-06-03 1984-05-29 Apparatus for adjusting optical axis of optical pickup

Country Status (2)

Country Link
JP (1) JPS59223953A (enrdf_load_stackoverflow)
WO (1) WO1984004991A1 (enrdf_load_stackoverflow)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217442A1 (en) * 1985-09-11 1987-04-08 Koninklijke Philips Electronics N.V. Viewing apparatus with adjustable alignment marker support
WO1988008145A3 (en) * 1987-04-10 1988-11-17 Hughes Aircraft Co Gimbal assembly
US4796974A (en) * 1987-01-21 1989-01-10 Stichting Voor De Technische Wetenschappen Device for focusing electromagnetic waves or sound
US4938564A (en) * 1987-04-10 1990-07-03 Hughes Aircraft Company Gimbal assembly
FR2642186A1 (fr) * 1989-01-25 1990-07-27 Asahi Optical Co Ltd Appareil photographique utilisant une unite de mise au point automatique
US5113291A (en) * 1988-04-08 1992-05-12 Minolta Camera Kabushiki Kaisha Optical axis and focus adjustment mechanism for semiconductor laser and collimator lens
US5257145A (en) * 1991-08-13 1993-10-26 Asahi Kogaku Kogyo Kabushiki Kaisha Optical data recording and reproducing apparatus
US5381273A (en) * 1991-04-26 1995-01-10 Goda; Yoshimasa Object lens holder, method for preparation of the object lens holder and object lens driving device employing object lens holder
US5555623A (en) * 1991-04-21 1996-09-17 Sony Corporation Method formaking and producing object lens holder
WO1998038638A1 (en) * 1997-02-26 1998-09-03 Deutsche Thomson-Brandt Gmbh Reproduction and/or recording device for optical recording media having a unit for adjusting the inclination of a bearing
US6414934B1 (en) * 1998-02-06 2002-07-02 Teac Corporation Pickup adjusting mechanism
JP2004512576A (ja) * 2000-11-10 2004-04-22 リノス、フォトニクス、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツング、ウント、コンパニー、コマンデイトゲゼルシャフト 光導波路結合器
US6788639B2 (en) * 1997-02-26 2004-09-07 Deutsche Thomson-Brandt Gmbh Reproduction and/or recording device for optical recording media having a unit for adjusting the inclination of a bearing
EP1607781A3 (de) * 2004-05-28 2006-11-02 Osram Opto Semiconductors GmbH Anordnung eines mikrooptischen Bauelements auf einem Substrat, Verfahren zur Justierung der Anordnung und optisches System mit der Anordnung
CN100386660C (zh) * 2005-04-13 2008-05-07 亚洲光学股份有限公司 可调芯的镜头装置
EP2001016A4 (en) * 2006-03-29 2009-12-30 Mitsubishi Electric Corp LENS DISPLACEMENT DEVICE, OPTICAL READ DEVICE, AND MOUNTING ADJUSTMENT METHOD
CN102528292A (zh) * 2011-12-31 2012-07-04 武汉金运激光股份有限公司 一种带有镜片调整装置的激光切割头

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6168734A (ja) * 1984-09-11 1986-04-09 Ricoh Co Ltd 光学式ピツクアツプ装置におけるレンズ光軸調節方法
JPS6248018U (enrdf_load_stackoverflow) * 1985-09-11 1987-03-25
JPH0722735Y2 (ja) * 1987-03-12 1995-05-24 船井電機株式会社 ディスクプレーヤの光ピックアップ装置
US5453962A (en) * 1992-08-20 1995-09-26 Mitsubishi Denki Kabushiki Kaisha Focus error detecting device
JPH0685228B2 (ja) * 1992-10-21 1994-10-26 ソニー株式会社 ディスクプレーヤの光学ヘッド装置
JP3085377B2 (ja) 1998-11-12 2000-09-04 日本電気株式会社 対物レンズ保持装置
KR101121138B1 (ko) 2005-10-20 2012-03-19 삼성전자주식회사 카메라 모듈 각도 조절 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060239A (enrdf_load_stackoverflow) * 1973-09-28 1975-05-24
JPS51126844A (en) * 1975-04-26 1976-11-05 Yasuhiro Suenaga A mirror holder
JPS57205835A (en) * 1981-06-12 1982-12-17 Akai Electric Co Ltd Optical axis adjusting device
JPS58109835U (ja) * 1982-01-18 1983-07-26 パイオニア株式会社 光学式デイスクプレ−ヤのピツクアツプ角度調整機構

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733445A (en) * 1980-08-06 1982-02-23 Mitsubishi Electric Corp Semiconductor laser beam source device of optical information recorder and reproducer
JPS57160112U (enrdf_load_stackoverflow) * 1981-04-01 1982-10-07

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060239A (enrdf_load_stackoverflow) * 1973-09-28 1975-05-24
JPS51126844A (en) * 1975-04-26 1976-11-05 Yasuhiro Suenaga A mirror holder
JPS57205835A (en) * 1981-06-12 1982-12-17 Akai Electric Co Ltd Optical axis adjusting device
JPS58109835U (ja) * 1982-01-18 1983-07-26 パイオニア株式会社 光学式デイスクプレ−ヤのピツクアツプ角度調整機構

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217442A1 (en) * 1985-09-11 1987-04-08 Koninklijke Philips Electronics N.V. Viewing apparatus with adjustable alignment marker support
US4796974A (en) * 1987-01-21 1989-01-10 Stichting Voor De Technische Wetenschappen Device for focusing electromagnetic waves or sound
WO1988008145A3 (en) * 1987-04-10 1988-11-17 Hughes Aircraft Co Gimbal assembly
US4938564A (en) * 1987-04-10 1990-07-03 Hughes Aircraft Company Gimbal assembly
US5113291A (en) * 1988-04-08 1992-05-12 Minolta Camera Kabushiki Kaisha Optical axis and focus adjustment mechanism for semiconductor laser and collimator lens
FR2642186A1 (fr) * 1989-01-25 1990-07-27 Asahi Optical Co Ltd Appareil photographique utilisant une unite de mise au point automatique
US5507082A (en) * 1991-04-21 1996-04-16 Sony Corporation Method of manufacturing an object lens holder
US5555623A (en) * 1991-04-21 1996-09-17 Sony Corporation Method formaking and producing object lens holder
US5587845A (en) * 1991-04-26 1996-12-24 Sony Corporation Object lens holder
US5381273A (en) * 1991-04-26 1995-01-10 Goda; Yoshimasa Object lens holder, method for preparation of the object lens holder and object lens driving device employing object lens holder
US5257145A (en) * 1991-08-13 1993-10-26 Asahi Kogaku Kogyo Kabushiki Kaisha Optical data recording and reproducing apparatus
WO1998038638A1 (en) * 1997-02-26 1998-09-03 Deutsche Thomson-Brandt Gmbh Reproduction and/or recording device for optical recording media having a unit for adjusting the inclination of a bearing
US6788639B2 (en) * 1997-02-26 2004-09-07 Deutsche Thomson-Brandt Gmbh Reproduction and/or recording device for optical recording media having a unit for adjusting the inclination of a bearing
US6414934B1 (en) * 1998-02-06 2002-07-02 Teac Corporation Pickup adjusting mechanism
JP2004512576A (ja) * 2000-11-10 2004-04-22 リノス、フォトニクス、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツング、ウント、コンパニー、コマンデイトゲゼルシャフト 光導波路結合器
EP1607781A3 (de) * 2004-05-28 2006-11-02 Osram Opto Semiconductors GmbH Anordnung eines mikrooptischen Bauelements auf einem Substrat, Verfahren zur Justierung der Anordnung und optisches System mit der Anordnung
US7558453B2 (en) 2004-05-28 2009-07-07 Osram Opto Semiconductors Gmbh Arrangement of a micro-optical component on a substrate, a method for adjustment of the arrangement, and an optical system with the arrangement
CN100386660C (zh) * 2005-04-13 2008-05-07 亚洲光学股份有限公司 可调芯的镜头装置
EP2001016A4 (en) * 2006-03-29 2009-12-30 Mitsubishi Electric Corp LENS DISPLACEMENT DEVICE, OPTICAL READ DEVICE, AND MOUNTING ADJUSTMENT METHOD
US7679846B2 (en) 2006-03-29 2010-03-16 Mitsubishi Denki Kabushiki Kaisha Lens driving device, optical pick up device and adjusting method
CN102528292A (zh) * 2011-12-31 2012-07-04 武汉金运激光股份有限公司 一种带有镜片调整装置的激光切割头

Also Published As

Publication number Publication date
JPS59223953A (ja) 1984-12-15
JPH0462132B2 (enrdf_load_stackoverflow) 1992-10-05

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