KR920002933B1 - Optical pick-up driving apparatus for recording system of optical information - Google Patents

Optical pick-up driving apparatus for recording system of optical information Download PDF

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Publication number
KR920002933B1
KR920002933B1 KR1019890007013A KR890007013A KR920002933B1 KR 920002933 B1 KR920002933 B1 KR 920002933B1 KR 1019890007013 A KR1019890007013 A KR 1019890007013A KR 890007013 A KR890007013 A KR 890007013A KR 920002933 B1 KR920002933 B1 KR 920002933B1
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South Korea
Prior art keywords
optical
tracking
frame
focusing
guide
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KR1019890007013A
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Korean (ko)
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KR900018941A (en
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이종완
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삼성전자 주식회사
강진구
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Priority to KR1019890007013A priority Critical patent/KR920002933B1/en
Priority to FR9006428A priority patent/FR2648263A1/en
Priority to JP2135151A priority patent/JPH0317837A/en
Priority to DE4016916A priority patent/DE4016916A1/en
Publication of KR900018941A publication Critical patent/KR900018941A/en
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Publication of KR920002933B1 publication Critical patent/KR920002933B1/en

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    • 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
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08582—Sled-type positioners
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0932—Details of sprung supports

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  • Optical Recording Or Reproduction (AREA)
  • Moving Of Heads (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

The unit for unifying the tracking direction driving means comprises a main frame (1) with a movable housing (2,2',3,4,4',9) containing an object lens (7) and tracking coils (5,5') to control lateral movement over guide marks, and a focusing coil (6). The coils (5,5',6) interact with permanent magnets (8). Guide openings (11,11') with guiding rods (12,12') guide the main frame (1). The housing (2,2',3,4,4',9) having the main frame (1). The housing (2,2',3,4,4',9) having tracking supporting plates (2,2'), a space holding piece (3), focusing supporting plates (4,4') and a supporting piece (9) supports the object lens (7) and the coils (5,5',6).

Description

광학적 정보기록 재생장치의 광 픽업구동장치Optical pickup driving device of optical information recording and reproducing apparatus

제1도는 본 발명의 동작상태 사시도.1 is a perspective view of the operating state of the present invention.

제2도는 종래의 광 픽업구동장치 분해 사시도.2 is an exploded perspective view of a conventional optical pickup driving device.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 프레임 2, 2' : 트랙킹지지판1 frame 2, 2 'tracking support plate

3 : 간격유지편 4, 4' : 포커싱지지판3: Spacing part 4, 4 ': Focusing support plate

5, 5' : 트랙킹코일 6 : 포커싱 코일5, 5 ': tracking coil 6: focusing coil

7 : 대물렌즈 8 : 영구자석7: objective lens 8: permanent magnet

본 발명의 광 디스크를 사용하여 각종 정보를 기록 또는 재생하는 광학적 정보기록 재상장치에 있어서, 광 디스크로부터 수광된 빛을 처리하여 정보신호를 발생시키는 광 픽업의 구동장치에 관한 것이다.An optical information recording and reproducing apparatus for recording or reproducing various types of information by using the optical disk of the present invention, the invention relates to an optical pickup driving apparatus for processing light received from an optical disk to generate an information signal.

일반적으로 광 디스크는 디스크의 중심과 트랙의 중심이 완전히 일치하지 않고, 또한 디스크가 완전한 평면을 유지할 없어 고정된 축을 중심으로 돌고 있는 디스크는 상하 또는 좌우 떨림현상이 발생하게 된다. 따라서, 상기 디스크에 필요한 정보를 기록하거나 기록된 정보를 재생하기 위한 광 픽업장치도 상기 디스크의 떨림을 추종하면서 트랙방향으로 이동하도록 되어 있다. 방향으로 이동하도록 되어있다.In general, optical discs do not completely coincide with the center of the disc and the center of the track, and the discs that rotate about a fixed axis may cause vertical or horizontal shaking. Therefore, the optical pickup device for recording the information necessary for the disc or reproducing the recorded information is also moved in the track direction while following the vibration of the disc. It is intended to move in the direction.

제2도는 일본 소니사의 광 픽업장치를 나타낸 것으로서, 보빈(22)의 측면에 부착된 트랙킹코일(23)(23`) 및 포커싱 코일(31)에 전류가 흐르면 기판(25)에 고정된 영구자석(24)(24`)이 형성하는 자장과의 상호작업에 따라 발생된 힘에 의해 상기 보빈이 핀(26)에 의해 안내되어 촛점방향의 떨림을 추종하는 한편 핀(26)을 중심으로 회전하므로서 보빈(22)에 편심되게 착설한 대물렌즈(21)가 디스크의 트랙킹방향의 떨림을 추종하게 되고 또한, 상기의 광 픽업장치는 모우터(28)와 기어(29)에 의해 가이드봉(30)(30`)을 따라 좌우로 직선운동을 하므로써 원하는 트랙으로 이동을 하게 되는 것이다.FIG. 2 shows an optical pickup device manufactured by Sony Corp. of Japan. A permanent magnet fixed to the substrate 25 when current flows through the tracking coils 23 and 23 'attached to the side of the bobbin 22 and the focusing coil 31. FIG. The bobbin is guided by the pin 26 by the force generated by the interaction with the magnetic field formed by (24) (24 ') to follow the focal shake while rotating about the pin 26. The objective lens 21 mounted eccentrically on the bobbin 22 follows the shaking of the disk in the tracking direction. The optical pickup device is a guide rod 30 by a motor 28 and a gear 29. You can move to the desired track by doing a straight line movement along (30`).

그러나, 상기와 같은 광 픽업구동장치는 트랙킹 방향의 구동수단이 2원화되어 있어서 구조가 복잡하고 2원화된 구동수단을 제어하기 위한 제어회로가 복잡하게 되는 단점이 있었다.However, the optical pickup driving apparatus as described above has disadvantages in that the driving means in the tracking direction is binary, and the control circuit for controlling the binary driving means is complicated.

본 발명의 목적은 이와 같은 단점을 해결하고자 트랙킹방향의 구동수단을 단일화 하여 구조가 간단한 광 픽업구동장치를 제공하기 위한 것이다.An object of the present invention is to provide an optical pickup driving apparatus having a simple structure by unifying the driving means in the tracking direction in order to solve such a disadvantage.

이와 같은 목적을 달성하기 위하여 본 발명은 수광된 빛을 처리하여 정보신호를 재생하는 광학장치가 내장되고 가이드봉에 의해 트랙킹 방향으로의 이동이 가능하도록 한 프레임과, 트랙킹코일과 포커싱 코일에 흐르는 전류와 영구자석에서 발생하는 자장과의 상호작용에 의해 트랙킹 방향 또는 촛점 방향으로 대물렌즈를 가동되게 하는 렌즈 구동부로 구성하여 광 디스크 트랙의 떨림현상을 추종하도록 된 것이다.In order to achieve the above object, the present invention has a built-in optical device for processing the received light to reproduce the information signal, the current flowing through the frame, the tracking coil and the focusing coil to enable movement in the tracking direction by the guide rod And a lens driving unit for moving the objective lens in the tracking direction or the focusing direction by the interaction with the magnetic field generated in the permanent magnet to follow the shaking phenomenon of the optical disc track.

본 발명의 구성 및 작용효과를 첨부도면에 의해 상세히 설명하면 다음과 같다.Referring to the configuration and effect of the present invention in detail by the accompanying drawings as follows.

본 발명 장치는 제1도에서 보는 바와 같이 광학장치가 내장되고 트랙킹 방향으로 이동가능 하도록 한 프레임과, 상기 프레임에 대해 가동코일이 착설된 대물렌즈를 지지하여 주는 지지수단과, 상기 프레임의 트랙킹 방향으로 가동을 안내하는 안내수단으로 구성되는 것으로, 지지수단은 프레임(1)과 간격유지편(3)의 좌우측면 사이에 적정길이로 트랙킹지지판(2)(2`)을 착설하고, 상기 간격유지편의 상하면의 중간부위와 대물렌즈(7)을 착설한 지지편(9)과의 사이에 포커싱 지지판(4)(4`)을 착설하며, 상기 지지판의 좌우측면에는 트랙킹코일(5)(5`)을, 하면에는 포커싱 코일(6)을 각각 착설하고, 전면에는 영구자석(8)을 착설하여서 된 것이다.The apparatus of the present invention, as shown in FIG. 1, includes a frame having an optical device embedded therein and movable in a tracking direction, support means for supporting an objective lens mounted with a movable coil on the frame, and a tracking direction of the frame. Consists of a guide means for guiding the operation to the support, the support means is installed between the frame 1 and the left and right sides of the spacing holding piece (3) in the appropriate length to support the tracking support plate (2) (2`), A focusing support plate (4) (4`) is installed between the middle portion of the upper and lower surfaces of the support and the support piece (9) on which the objective lens (7) is installed, and the tracking coils (5) and (5`) are provided on the left and right sides of the support plate. ), The focusing coils 6 are installed on the lower surface, and the permanent magnets 8 are installed on the front surface.

한편, 안내수단은 프레임(1)의 후단부 상하 돌출부에 가이드공(11)(11`)을 뚫어 가이드봉(12)(12`)을 끼워지게 결합시켜 이 가이드봉을 따라 좌우 이동되도록 하였으며, 또한 프레임(1)의 상면에는 홀로그램 엘리멘트(10)를 착설하고 선단부 하측에는 레이저 다이오드와 포토다이오드등의 광학장치를 내장하여서 된 것이다.On the other hand, the guide means is coupled to the guide rods 12, 12` through the guide hole (11) (11`) to the upper and lower projections of the rear end of the frame (1) to be moved left and right along the guide rod, In addition, the hologram element 10 is installed on the upper surface of the frame 1, and optical devices such as a laser diode and a photodiode are incorporated below the distal end.

이와 같이 구성되는 본 발명은 제1도에서 보는 바와 같이 지지편(9)의 중앙부에 착설한 대물렌즈(7)는 포커싱 지지판(4)(4`)으로 간격유지편(3)에 지지되고, 이 간격유지편은 트랙킹지지판(2)(2`)에 의해 프레임(1)에 지지되는데, 이때 상기 포커싱 지지판 및 트랙킹지지판은 탄성을 가진 얇은 판으로 되어 있어 포커싱 지지판은 촛점방향 즉, 상하로는 적은 힘에 의해서도 휨작용이 발생하지만 트랙킹 방향, 즉 좌우로는 저항이 커서 휨작용이 발생하지 못하고, 트랙킹지지판은 포커싱 지지판과 반대로 트랙킹 방향으로는 적은 힘에 의해서도 휨작용이 발생하지만 초점 방향으로는 휨작용이 발생하지 못하게 된다. 이에 따라 포커싱 코일(6)에 전류가 흐르게 되면, 이 전류와 영구자석(8)에서 발생하는 자장과의 상호 작용에 의해 상기 포커싱 코일이 힘을 받게 되므로 포커싱 지지판(4)(4`)이 휘어지게 되어 지지편(9)에 착설한 대물렌즈(7)가 촛점방향으로 가동하게 된다. 또한, 트랙킹코일(5)(5`)에 전류가 흐르게 되면 영구자석(8)에서 발생하는 자장과의 상호작용에 의해 상기 트랙킹코일이 영구자석에 대해 상대적으로 힘을 받게 되어 트랙킹지지판(2)(2`)이 휘어지게 되므로 대물렌지가 가동하게 되는데, 이때 트랙킹코일(5)(5`)이 받는 힘(F1)이 상기 마찰력(F2)보다 크면 프레임(1)이 가이드봉(12)(12`)을 따라 이동하여 상기 프레임에 지지되어 있는 대물렌즈(7)가 큰 폭으로 가동된다. 이때, 트랙킹 지지된(2)(2`)의 탄성 계수와 가이드공(11)(11`)과 가이드봉(12)(12`)의 마찰력을 적정하게 선정함으로서 대물렌즈(7)의 프레임(1)에 대한 상대 변위를 일정한도 이내로 억제하면서 대물렌즈(7)를 트랙킹 방향으로 넓은 범위의 이동이 가능하게 되는 것이다.In the present invention configured as described above, as shown in FIG. 1, the objective lens 7 mounted on the central portion of the support piece 9 is supported by the spacing holding piece 3 by the focusing support plates 4 and 4 '. The gap retaining piece is supported on the frame 1 by the tracking support plates 2 and 2 '. At this time, the focusing support plate and the tracking support plate are elastic thin plates so that the focusing support plate is focused in the focusing direction, that is, in the vertical direction. Bending occurs even with a small force, but the bending direction does not occur because the resistance is large in the tracking direction, that is, the left and right, and the tracking support plate has a low bending force in the tracking direction as opposed to the focusing support plate. The bending action will not occur. Accordingly, when a current flows through the focusing coil 6, the focusing coil is subjected to a force by the interaction between the current and the magnetic field generated by the permanent magnet 8, so that the focusing support plate 4 and 4 ′ are bent. The objective lens 7 mounted on the support piece 9 is moved in the focusing direction. In addition, when a current flows in the tracking coils 5 and 5 ', the tracking coils are relatively energized by the magnetic fields generated by the permanent magnets 8, so that the tracking support plate 2 (2`) is bent, so that the objective range is operated. At this time, if the force (F1) of the tracking coil (5) (5`) is greater than the friction force (F2), the frame (1) is a guide rod 12 ( Moving along 12 '), the objective lens 7 supported on the frame is largely operated. At this time, by appropriately selecting the elastic modulus of the tracking supported (2) (2`) and the frictional force of the guide holes (11) (11`) and the guide rods (12) (12`), the frame of the objective lens (7) ( It is possible to move the objective lens 7 in a wide range in the tracking direction while suppressing the relative displacement with respect to 1) within a certain degree.

이와 같이 본 발명은 트랙킹 방향의 구동수단을 단일화하여 구조가 간단하고 소형화되는 효과를 갖는다.As described above, the present invention has the effect that the structure is simple and miniaturized by unifying the driving means in the tracking direction.

Claims (3)

영구자석과 가동코일을 사용하여 구동력을 발생시키는 광 디스크장치의 픽업구동장치에 있어서, 광학장치가 내장되고 트랙킹방향으로 이동가능하도록한 프레임과, 상기 프레임에 대해 가동코일이 착설된 대물렌즈를 지지하여주는 지지수단과, 상기 프레임의 트랙킹 방향으로의 가동을 안내하는 안내수단으로 구성하고, 상기 지지수단에서 발생하는 탄성력을 이용하여 프레임을 영구자석에 대해 상대운동을 시키도록 하는 것을 특징으로 하는 광학적 정보기록 재생장치의 광 픽업구동장치.A pickup driving apparatus of an optical disk apparatus that generates a driving force by using a permanent magnet and a movable coil, comprising: a frame having an optical device and movable in a tracking direction, and an objective lens mounted with a movable coil on the frame; And a support means for guiding movement of the frame in the tracking direction, and using the elastic force generated by the support means to make the frame relative to the permanent magnet. Optical pickup driving device of the information recording and reproducing apparatus. 제1항에 있어서, 지지수단으로 포커싱 지지판(4)(4`) 및 트랙킹지지판(2)(2`)이 탄성을 가진 얇은 판으로 되는 것을 특징으로 하는 광학적 정보기록 재생장치의 광 픽업구동장치.The optical pickup driving apparatus of the optical information recording and reproducing apparatus according to claim 1, wherein the focusing support plates (4) (4 ') and the tracking support plates (2) (2') are elastic thin plates as support means. . 제1항에 있어서, 안내수단으로 미끄럼마찰을 일으키는 안내봉과 프레임에 만들어진 안내공으로 구성되는 것을 특징으로 하는 광학적 정보기록 재생장치의 광 픽업구동장치.The optical pickup driving apparatus of the optical information recording and reproducing apparatus according to claim 1, further comprising: a guide rod for causing sliding friction as a guide means and a guide hole made in the frame.
KR1019890007013A 1989-05-25 1989-05-25 Optical pick-up driving apparatus for recording system of optical information KR920002933B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019890007013A KR920002933B1 (en) 1989-05-25 1989-05-25 Optical pick-up driving apparatus for recording system of optical information
FR9006428A FR2648263A1 (en) 1989-05-25 1990-05-23 Pick-up drive apparatus for an optical information reader/recorder
JP2135151A JPH0317837A (en) 1989-05-25 1990-05-24 Optical pickup drive in optical information recorder
DE4016916A DE4016916A1 (en) 1989-05-25 1990-05-25 Scanning and driving gear for optical devices - uses optical processor and electrically energises windings integrating with permanent magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890007013A KR920002933B1 (en) 1989-05-25 1989-05-25 Optical pick-up driving apparatus for recording system of optical information

Publications (2)

Publication Number Publication Date
KR900018941A KR900018941A (en) 1990-12-22
KR920002933B1 true KR920002933B1 (en) 1992-04-10

Family

ID=19286466

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890007013A KR920002933B1 (en) 1989-05-25 1989-05-25 Optical pick-up driving apparatus for recording system of optical information

Country Status (4)

Country Link
JP (1) JPH0317837A (en)
KR (1) KR920002933B1 (en)
DE (1) DE4016916A1 (en)
FR (1) FR2648263A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0572114B1 (en) * 1992-04-22 1998-07-29 Canon Kabushiki Kaisha An apparatus for driving an objective lens

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57122030U (en) * 1981-01-26 1982-07-29
JPS5911544A (en) * 1982-07-09 1984-01-21 Nippon Kogaku Kk <Nikon> Optical head driving device
US4504935A (en) * 1983-02-14 1985-03-12 U.S. Philips Corporation Electrodynamic focus and radial slide drive for an optical disc system
USRE37084E1 (en) * 1983-05-31 2001-03-06 Matsushita Electric Industrial Co., Ltd. Objective lens driving apparatus for optical disc player
JPS60143450A (en) * 1983-12-30 1985-07-29 Asahi Optical Co Ltd Objective supporting device of optical information recording and reproducing device
JPS60155022U (en) * 1984-03-21 1985-10-16 パイオニア株式会社 Optical system drive device in optical information reading device
JPS60253030A (en) * 1984-05-29 1985-12-13 Seiko Instr & Electronics Ltd Objective lens driving device
JPS63257927A (en) * 1987-04-15 1988-10-25 Pioneer Electronic Corp Pickup actuator

Also Published As

Publication number Publication date
FR2648263A1 (en) 1990-12-14
KR900018941A (en) 1990-12-22
JPH0317837A (en) 1991-01-25
DE4016916A1 (en) 1990-11-29

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