KR0158856B1 - A tracking and focusing coil adjustment device of optical pick-up actuator - Google Patents
A tracking and focusing coil adjustment device of optical pick-up actuator Download PDFInfo
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- KR0158856B1 KR0158856B1 KR1019950045200A KR19950045200A KR0158856B1 KR 0158856 B1 KR0158856 B1 KR 0158856B1 KR 1019950045200 A KR1019950045200 A KR 1019950045200A KR 19950045200 A KR19950045200 A KR 19950045200A KR 0158856 B1 KR0158856 B1 KR 0158856B1
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- adjustment coil
- tracking
- objective lens
- lens holder
- optical pickup
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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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
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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
- 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
- G11B7/0933—Details of stationary parts
-
- 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
- G11B7/0935—Details of the moving parts
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
본 발명은 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일 보정장치에 관한 것으로서, 대물렌즈홀더(110)의 사각홈(113)이 끼워지는 고정돌기(105)가 벽면으로 돌설된 코일 설치대(104)를 갖는 고정부재(100)와, 상기 고정부재(100)가 상부면에 형성된 설치홈(91)내에 안치되고, 복수개의 지지대(80)를 저면에서 지지해주는 받침판(90)과, 상기 받침판(90)에서 상부로 돌설된 지지대(80)상에 고정 설치되어 내부에 방향전환부(51)가 장착된 본체(50)와, 상기 본체(50)의 방향전환부(51) 저면에 장착되어 상,하로 이동하는 상,하이동축(60)과, 상기 상,하이동축(60)의 끝단부에 부착되어 상기 고정부재(100)에 장착된 대물렌즈홀더(110)의 포커싱 조정코일(111) 및 트랙킹 조정코일(112)을 눌러주어 보정하는 누름부재(70)와, 상기 누름부재(70)를 상,하로 동작시키기 위해 상기 방향전환부재(51)의 측면에 돌설된 회전축(40)을 구동시키는 동력전달부재(30)로 구성된 것을 특징으로 하는 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일 보정장치인바, 광픽업 액츄에이터의 부공진을 해소하도록 해주는 것이다.The present invention relates to an apparatus for compensating tracking and focusing adjustment coils of an optical pickup actuator, wherein the fixing protrusion 105 into which the square groove 113 of the objective lens holder 110 is fitted has a coil mount 104 protruding from the wall surface. Fixing member 100 and the fixing member 100 is placed in the mounting groove 91 formed on the upper surface, the support plate 90 for supporting a plurality of support 80 from the bottom and the support plate 90 It is fixedly installed on the support 80 protruding upwards and mounted on the bottom of the main body 50 and the direction changing part 51 of the main body 50 to move up and down. A focusing adjustment coil 111 and a tracking adjustment coil of the objective lens holder 110 attached to the upper and lower movable shafts 60 and end portions of the upper and lower movable shafts 60 and mounted to the fixing member 100. A pressing member 70 for pressing and correcting 112 and the direction to operate the pressing member 70 up and down. The tracking and focusing adjustment coil correction device of the optical pickup actuator, which comprises a power transmission member 30 for driving the rotating shaft 40 protruding from the side of the ring member 51, eliminating the negative resonance of the optical pickup actuator. To do that.
Description
제1도는 일반적인 와이어 타입 액츄에이터의 사시도.1 is a perspective view of a general wire type actuator.
제2도는 본 발명에 따른 보정장치의 구성도.2 is a block diagram of a correction device according to the present invention.
제3도는 본 발명에 따른 고정부재의 사시도.3 is a perspective view of a fixing member according to the present invention.
제4도는 본 발명에 따른 코일 설치대에 대물렌즈홀더가 장착되는 상태도.4 is a state in which the objective lens holder is mounted on the coil mount according to the present invention.
제5도는 본 발명에 따른 보정장치의 사용 상태도.5 is a state diagram used in the correction device according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
30 : 동력전달부재 40 : 회전축30: power transmission member 40: rotating shaft
50 : 본체 60 : 상,하이동축50: main body 60: up and down movement shaft
70 : 누름부재 100 : 고정부재70: pressing member 100: holding member
본 발명은 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일에 관한 것으로서, 특히 대물렌즈홀더 주위에 감겨진 포커싱 조정코일과 그 포커싱 조정코일의 외주면에 접착된 트랙킹 조정코일의 평탄도 및 수직도를 정밀하게 보정하므로써 대물렌즈홀더가 동작할 때 발생하는 부공진을 해소하여 광픽업 액츄에이터의 성능을 향상시키도록 해주는 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일 보정장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to tracking and focusing adjustment coils of optical pickup actuators. In particular, the flatness and verticality of the focusing adjustment coil wound around the objective lens holder and the tracking adjustment coil bonded to the outer circumferential surface of the focusing adjustment coil are precisely corrected. Accordingly, the present invention relates to a tracking and focusing adjustment coil compensating device for an optical pickup actuator that eliminates the negative resonance generated when the objective lens holder is operated to improve the performance of the optical pickup actuator.
일반적으로, 광픽업 액츄에이터는 제1도에 도시된 바와같이, 중앙부에 레이저빔 통과공(도시되지 않음)이 형성되고 일측 방향 중심선상의 레이저빔 통과공 양쪽에 각각 일정한 간격을 갖는 한쌍의 내외측 요오크(10)(10')가 수직으로 돌설된 형태의 베이스플레이트(11)와, 상기 각 한쌍의 요오크(10)(10')중 바깥쪽 요오크(10')의 내면에 설치되는 영구자석(12)과, 상기 베이스플레이트(11)상의 레이저빔 통과공 상방에 설치되고, 상면 중앙에는 레이저빔 통과공을 통하여 입사된 레이저빔을 디스크의 기록층에 조사시키는 대물렌즈(13)가 장착되는 대물렌즈홀더(14)와, 상기 대물렌즈홀더(14)의 외면 소정위치에 설치된 상태에서 상기 내측요오크(10)에 끼워져 전류인가시 영구자석(12)과의 상호작용에 의하여 전자기력을 발생시켜 대물렌즈홀더(14)의 광축방향 움직임과 트랙킹 방향 움직임을 제어하는 포커싱 조정코일(17) 및 트랙킹 조정코일(16)과, 상기 대물렌즈홀더(14)의 양측 상하부에 돌설된 고정편(18)에 일단이 고정디고, 타단은 별도의 고정플레이트(19) 및 PCB(20)에 고정되어 외부로 인가되는 충격을 감쇄시켜주는 서스펜션(21)으로 이루어져 있다.In general, as shown in FIG. 1, the optical pickup actuator includes a pair of inner and outer sides having a laser beam through hole (not shown) formed in the center and having a predetermined distance on both sides of the laser beam through hole on one direction center line. The yoke 10, 10 'is installed on the inner surface of the base plate 11 of the vertical protrusion and the outer yoke 10' of each of the pair of yoke 10, 10 ' The permanent magnet 12 and the objective lens 13 which is provided above the laser beam passing hole on the base plate 11 and irradiates the recording layer of the disc with the laser beam incident through the laser beam passing hole in the center of the upper surface thereof. The magnetic lens holder 14 is mounted on the inner yoke 10 in a state where the objective lens holder 14 is installed at a predetermined position on the outer surface of the objective lens holder 14, and when the current is applied, electromagnetic force is generated by interaction with the permanent magnet 12. To move in the optical axis direction of the objective lens holder 14 And one end is fixed to the focusing adjustment coil 17 and the tracking adjustment coil 16 for controlling the movement in the tracking direction, and the fixing pieces 18 protruding from both the upper and lower sides of the objective lens holder 14, and the other end is separate. It is composed of a suspension 21 fixed to the fixed plate 19 and the PCB 20 to attenuate the impact applied to the outside.
이와같이 구성되는 광픽업 액츄에이터(15)의 조립 제작시 상기 서스펜션(21)을 설치하기 위해서는 그 서스펜션(21)의 일단을 상기 대물렌즈홀더(14)상의 고정편(18)에 끼워 고정하고 반대쪽 끝은 상기 요오크(10)의 후방에 위치되는 별도의 고정플레이트(19) 및 PCB(20)에 고정되어지는 것이다.In order to install the suspension 21 when assembling and manufacturing the optical pickup actuator 15 configured as described above, one end of the suspension 21 is fixed to the fixing piece 18 on the objective lens holder 14 and the opposite end is It is to be fixed to a separate fixing plate 19 and the PCB 20 located at the rear of the yoke 10.
이와같이, 상기한 대물렌즈홀더(14)의 외주부에는 대물렌즈홀더(14)를 포커싱 방향으로 구동시키는 포커싱 조정코일(17)이 감겨진 상태로 접착되어 있으며 이러한 포커싱 조정코일(17)의 양측면에 각각 두 개씩의 트랙킹 조정 코일(16)이 유브이 본드에 의해 접착 설치되어진다.In this way, the focusing adjustment coil 17 for driving the objective lens holder 14 in the focusing direction is wound on the outer circumferential portion of the objective lens holder 14, and is respectively bonded to both sides of the focusing adjustment coil 17. Two tracking adjustment coils 16 are attached to each other by a bond bond.
그런데, 상기한 바와같이, 대물렌즈홀더(14) 주위에 감겨져서 설치되는 포커싱 조정코일(17)은 길이가 길고 굵기가 가는 와이어를 수백번의 회전수로 감겨진 상태에서 대물렌즈홀더(14) 주위에 설치되기 때문에 포커싱 조정코일(17)이 대물렌즈홀더(14) 주위에 긴밀하게 접촉되어지지 않고 외측으로 약간 굴곡지게 설치되는 경우가 발생되어지고, 이로인해 포커싱 조정코일(17)의 외주부에 본딩 접착되는 트랙킹 조정코일(16) 역시 외측 방향으로 만곡지게 설치되므로써 대물렌즈홀더(14)가 포커싱 및 트랙킹 구동 방향으로 동작할 때 무게중심이 정확하지 않게되어 대물렌즈홀더(14)에 부공진이 발생되는 문제점이 있었다.However, as described above, the focusing adjustment coil 17 wound and installed around the objective lens holder 14 has an objective lens holder 14 in a state in which a long and thin wire is wound at several hundred revolutions. Since the focusing adjustment coil 17 is installed around the objective lens holder 14 rather than being in close contact with the object lens holder 14, it is caused to be slightly bent outwardly, and thus the outer peripheral portion of the focusing adjustment coil 17 is caused. Since the tracking adjustment coil 16, which is bonded and bonded, is also installed to be bent in the outward direction, the center of gravity becomes inaccurate when the objective lens holder 14 operates in the focusing and tracking driving directions, so that negative resonance is caused in the objective lens holder 14. There was a problem that occurred.
특히, 자동차용 씨디 플레이어의 광픽업 장치에 사용되는 대물렌즈홀더(14)의 크기는 작고 두께는 매우 얇기 때문에 대물렌즈홀더(14)의 주위에 설치되는 트랙킹 조정코일(16) 및 트랙킹 조정코일(17)의 굴곡정도가 더욱더 커지게 되므로 대물렌즈홀더(14)가 떨리는 현상인 부공진이 심하게 발생되어진다.In particular, since the size of the objective lens holder 14 used in the optical pickup device of the automotive CD player is very small and the thickness is very thin, the tracking adjustment coil 16 and the tracking adjustment coil 16 installed around the objective lens holder 14 ( Since the degree of bending of 17) becomes larger, negative resonance, a phenomenon in which the objective lens holder 14 is shaken, is severely generated.
본 발명은 이러한 점을 감안항 안출한 것으로서, 대물렌즈홀더 주위에 감겨진 포커싱 조정코일과 그 포커싱 조정코일의 외주면에 접착된 트랙킹 조정코일의 평탄도 및 수직도를 정밀하게 보정하므로써 대물렌즈홀더가 동작할 때 발생하는 일종의 떨림 현상인 부공진을 해소하여서 광픽업 액츄에이터의 성능을 향상시키는 것이 목적이다.SUMMARY OF THE INVENTION The present invention has been made in view of this point, and the objective lens holder can be accurately corrected by correcting the flatness and verticality of the focusing adjustment coil wound around the objective lens holder and the tracking adjustment coil bonded to the outer circumferential surface of the focusing adjustment coil. It is an object of the present invention to improve performance of an optical pickup actuator by eliminating negative resonance, which is a kind of vibration that occurs during operation.
이러한 목적은 외주면에 포커싱 조정코일 및 트랙킹 조정코일이 부착 설치된 대물렌즈홀더를 갖는 광픽업 액츄에이터에 있어서, 상기 대물렌즈홀더의 사각홈이 끼워지는 고정돌기가 벽면으로 돌설된 코일 설치대를 갖는 고정부재와, 상기 고정부재가 상부면에 형성된 설치홈내에 안치되고, 복수개의 지지대를 저면에서 지지해주는 받침판과, 상기 받침판에서 상부로 돌설된 지지대상에 고정 설치되어 내부에 방향전환부가 장착된 본체와, 상기 본체의 방향전환부 저면에 장착되어 상,하로 이동하는 상,하이동축과, 상기 상,하이동축의 끝단부에 부착되어 상기 고정부재에 장착된 대물렌즈홀더의 포커싱 조정코일 및 트랙킹 조정코일을 눌러주어 보정하는 누름부재와, 상기 누름부재를 상,하로 동작시키기 위해 상기 방향전환부재의 측면에 돌설된 회전축을 구동시키는 동력전달부재로 구성된 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일 보정장치를 제공하므로써 달성된다.In the optical pickup actuator having an objective lens holder having a focusing adjustment coil and a tracking adjustment coil attached to the outer circumferential surface, the fixing member having a coil mount with a fixing projection for fitting the square groove of the objective lens holder against the wall; And a main body having the fixing member placed in an installation groove formed on an upper surface thereof, a supporting plate supporting a plurality of supports from the bottom surface, and a main body fixedly installed on a support object protruding upward from the supporting plate, and having a direction change unit mounted therein; It is mounted on the bottom of the direction change part of the main body and moves up and down, and the focusing adjustment coil and tracking adjustment coil of the objective lens holder attached to the end of the up and down movement shaft and attached to the fixing member A pressing member for correcting a given pressure, and a turn protruding from the side of the direction changing member to operate the pressing member up and down It is achieved by providing a tracking and focusing correction device to adjust the coil of the optical pickup actuator constructed as a power transmission member that drives the axis.
이하, 첨부도면에 의거하여 본 발명의 구성을 상세히 설명하도록 한다.Hereinafter, the structure of the present invention will be described in detail with reference to the accompanying drawings.
제2도 내지 제5도에 도시된 바와같이, 본 발명의 구성은 외주면에 포커싱 조정코일(111) 및 트랙킹 조정코일(112)이 부착 설치된 대물렌즈홀더(110)를 갖는 광픽업 액츄에이터에 있어서, 상기 대물렌즈홀더(110)의 사각홈(113)이 끼워지는 고정돌기(105)가 벽면으로 돌설된 코일 설치대(104)를 갖는 고정부재(100)와, 상기 고정부재(100)가 상부면에 형성된 설치홈(91)내에 안치되고, 복수개의 지지대(80)를 저면에서 지지해주는 받침판(90)과, 상기 받침판(90)에서 상부로 돌설된 지지대(80)상에 고정 설치되어 내부에 방향전환부(51)가 장착된 본체(50)와, 상기 본체(50)의 방향전환부(51) 저면에 장착되어 상,하로 이동하는 상,하이동축(60)과, 상기 상,하이동축(60)의 끝단부에 부착되어 상기 고정부재(100)에 장착된 대물렌즈홀더(110)의 포커싱 조정코일(111) 및 트랙킹 조정코일(112)을 눌러주어 보정하는 누름부재(70)와, 상기 누름부재(70)를 상,하로 동작시키기 위해 상기 방향전환부재(51)의 측면에 돌설된 회전축(40)을 구동시키는 동력전달부재(30)로 구성된 것이다.As shown in Figs. 2 to 5, the configuration of the present invention is an optical pickup actuator having an objective lens holder 110 provided with a focusing adjustment coil 111 and a tracking adjustment coil 112 attached to an outer circumferential surface thereof. The fixing member 100 having the coil mounting table 104 in which the fixing protrusion 105 into which the square groove 113 of the objective lens holder 110 is inserted into the wall surface, and the fixing member 100 on the upper surface. Placed in the installation groove 91 formed, the support plate 90 for supporting a plurality of support 80 from the bottom and fixedly installed on the support 80 protruding from the support plate 90 to the top to change direction therein The main body 50 to which the unit 51 is mounted, the upper and lower movable shafts 60 mounted on the bottom surface of the direction changing unit 51 of the main body 50 and moving up and down, and the upper and lower movable shafts 60 Focusing adjustment coil 111 and tracking adjustment coil of the objective lens holder 110 is attached to the end of the fixed to the fixing member 100 Pressing member 70 for pressing and correcting 112, and a power transmission member for driving the rotating shaft 40 protruding on the side of the direction switching member 51 to operate the pressing member 70 up and down It consists of 30.
그리고, 상기 방향전환부재(51)는 상기 회전축(40)에 결합되고, 회전축(40)에 변속된 회전력을 전달하는 다수개의 기어가 맞물려 있는 변속기어부(35)와, 상기 변속기어부(35)의 어느 한 기어에 회전축(32)이 결합되어서 변속기어부(35)에 회전 동력을 발생시키는 구동모터(31)로 구성된다.In addition, the redirection member 51 is coupled to the rotation shaft 40, the transmission gear unit 35 and a plurality of gears for transmitting the rotational force transmitted to the rotation shaft 40 is engaged with the transmission gear unit 35 The rotating shaft 32 is coupled to one of the gears is composed of a drive motor 31 for generating rotational power to the transmission gear part (35).
그리고, 상기고정부재(100)는 상기 누름부재(70)가 하부로 진입하도록 일정깊이 함몰되어지는 진입홈(102)이 형성되며, 상기 누름부재(70)이 형성되고, 그 요홈(71)의 바닥면은 평탄도가 매우 정밀한 압압면(72)으로 구성된다.In addition, the fixing member 100 is formed with an entrance groove 102 in which the pressing member 70 is recessed to a predetermined depth so that the pressing member 70 enters downward, and the pressing member 70 is formed, and the recess 71 The bottom surface is constituted by the pressing surface 72 with very high flatness.
또한, 상기 고정부재(100)는 진입홈(102)의 좌,우 양측면에 다수개 형성된 끼움공(103)을 통해 끼워진 고정나사(101)에 의해 받침판(90)의 나사공(92)에 체결 고정되어진다.In addition, the fixing member 100 is fastened to the screw hole 92 of the support plate 90 by a fixing screw 101 fitted through a plurality of fitting holes 103 formed on both left and right sides of the entry groove 102. It is fixed.
이하, 첨부도면에 의거하여 본 발명의 작용 효과를 상세히 설명하도록 한다.Hereinafter, on the basis of the accompanying drawings to explain the effect of the present invention in detail.
먼저, 대물렌즈홀더(110)의 주위에 포커싱 조정코일(111) 및 트랙킹조정코일(112)이 조립된 상태에서 포커싱 조정코일(111)과 트랙킹 조정코일(112)의 수직도 및 평탄도를 보정하고자 한다면, 대물렌즈홀더(110)의 사각홈(113)을 고정부재(100)인 코일 설치대(104)의 고정돌기(105)에 끼워주므로써 대물렌즈홀더(110)를 코일 설치대(104)의 벽면에 고정시키도록 한다.First, the verticality and flatness of the focusing adjustment coil 111 and the tracking adjustment coil 112 are corrected while the focusing adjustment coil 111 and the tracking adjustment coil 112 are assembled around the objective lens holder 110. If you want to, by fitting the square groove 113 of the objective lens holder 110 to the fixing projection 105 of the coil mounting table 104 of the fixing member 100, the objective lens holder 110 is wall surface of the coil mounting table 104 To be fixed in place.
이러한 상태에서, 동력전달부재(30)인 구동모터(31)를 구동시켜서 회전력을 변속기부(35)에서 적정한 회전비율로 변환시키게 되면, 변속기어부(35)의 마지막 기어치에 맞물려 있는 회전축(40)을 회전시키게 되고, 그 회전축(40)의 회전력이 방향전화부(51)를 통해서 상,하이동축(60)을 하부로 이동시키게 되고, 상,하이동축(60)의 끝단부에 설치된 누름부재(70)가 서서히 하측으로 이동하게 된다.In this state, when the driving force 31, which is the power transmission member 30, is driven to convert the rotational force into an appropriate rotation ratio in the transmission portion 35, the rotation shaft 40 engaged with the last gear value of the transmission gear portion 35. ) Is rotated, and the rotational force of the rotary shaft 40 moves the upper and lower shafts 60 through the direction telephone unit 51 to the lower side, and the pressing member installed at the end of the upper and lower shafts 60. 70) gradually moves downward.
그리고, 누름부재(70)의 하측이동에 의해 누름부재(70)의 요홈(71)으로 대물렌즈홀더(110)가 끼워지게 되고, 요홈(71)의 압압면(72)이 트랙킹 조정코일(112)과 포커싱 조정코일(111)을 고정돌기(105)로 누르게 되면서, 트랙킹 조정코일(112) 및 포커싱 조정코일(111)이 가지고 있는 굴곡에 의한 오차한계를 정확하게 압압시켜 보정시키게 된다.Then, the objective lens holder 110 is inserted into the groove 71 of the pressing member 70 by the lower movement of the pressing member 70, and the pressing surface 72 of the groove 71 is the tracking adjustment coil 112. ) And the focusing adjustment coil 111 by pressing the fixing projection 105, to accurately press and correct the error limits due to the bending of the tracking adjustment coil 112 and the focusing adjustment coil 111.
한편, 보정이 이루어진후 눌려져 있던 누름부재(70)를 원사어태로 복귀시키게 위해 상기한 반대의 과정을 거쳐서 누름부재(70)를 대물렌즈홀더(110)로부터 이탈시켜 원상태로 복귀되어진다.On the other hand, after the correction is made, the pressing member 70 is released from the objective lens holder 110 through the reverse process in order to return the pressing member 70 that has been pressed to the yarn shape.
그리고, 대물렌즈홀더(110)의 반대측 방향에 설치된 포커싱 조정코일(111) 및 트랙킹 조정코일(112)의 평탄도 및 직진도는 대물렌즈홀더(110)를 고정돌기(105)에서 이탈시킨후 대물렌즈홀더(110)를 180도 회전시켜서 보정을 요하는 반대측 트랙킹 조정코일(112)이 상부로 향하도록 하여서 대물렌즈홀더(110)의 사각홈(113)을 고정돌기(105)에 끼운후 고정된 대물렌즈홀더(110)를 동력전달부재(30)를 다시 구동시켜 누름부재(70)의 압압면(72)으로 보정시키면 된다.Further, the flatness and straightness of the focusing adjustment coil 111 and the tracking adjustment coil 112 provided in the opposite direction of the objective lens holder 110 are separated after the objective lens holder 110 is removed from the fixing protrusion 105. Rotate the lens holder 110 by 180 degrees so that the opposite tracking adjustment coil 112 requiring correction is directed upward so that the square groove 113 of the objective lens holder 110 is fixed to the fixing protrusion 105. The objective lens holder 110 may be driven again by driving the power transmission member 30 to the pressing surface 72 of the pressing member 70.
이와같이, 계속해서 다른 대물렌즈홀더(110)에 설치된 트랙킹 조정코일(112) 및 포커싱 조정코일(111)의 직진도 및 평탄도를 보정할 수 있는 것이다.In this way, the straightness and flatness of the tracking adjustment coil 112 and the focusing adjustment coil 111 provided in the other objective lens holder 110 can be corrected continuously.
따라서, 종래의 광픽업 액츄에이터는 포커싱 조정코일 및 트랙킹 조정코일의 평탄도 및 직진도를 보정하지 못하므로써 부공진이 발생되는 것과는 다르게 본 발명에 따른 보정장치를 사용하게 되면 대물렌즈홀더를 고정부재인 코일 설치대의 고정돌기에 끼워서 고정시킨후 구동모터 및 변속기어부를 포함한 동력전달부재를 작동시켜서 상,하이동축의 저면에 부착된 누름부재의 압압면으로 트랙킹 조정코일 및 포커싱 조정코일의 측면부를 긴밀히 눌러주고 대물렌즈홀더의 무게 중심을 정확히 잡아주어서 대물렌즈홀더의 부공진을 방지하므로써 광픽업 액츄에이터의 동작 성능을 향상시키도록 해주는 매우 유용한 발명인 것이다.Therefore, in the conventional optical pickup actuator, the object lens holder is fixed to the objective lens holder when the compensation device according to the present invention is used, unlike the occurrence of negative resonance, by not correcting the flatness and straightness of the focusing adjustment coil and the tracking adjustment coil. After fixing by inserting it into the fixing protrusion of the coil mount, operate the power transmission member including the drive motor and the transmission gear and press the side of the tracking adjustment coil and the focusing adjustment coil with the pressing surface of the pressing member attached to the bottom of the upper and the high shaft. It is a very useful invention to improve the operation performance of the optical pickup actuator by preventing the negative resonance of the objective lens holder by accurately grasping the center of gravity of the objective lens holder.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950045200A KR0158856B1 (en) | 1995-11-30 | 1995-11-30 | A tracking and focusing coil adjustment device of optical pick-up actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950045200A KR0158856B1 (en) | 1995-11-30 | 1995-11-30 | A tracking and focusing coil adjustment device of optical pick-up actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970029411A KR970029411A (en) | 1997-06-26 |
| KR0158856B1 true KR0158856B1 (en) | 1999-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950045200A KR0158856B1 (en) | 1995-11-30 | 1995-11-30 | A tracking and focusing coil adjustment device of optical pick-up actuator |
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| Country | Link |
|---|---|
| KR (1) | KR0158856B1 (en) |
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1995
- 1995-11-30 KR KR1019950045200A patent/KR0158856B1/en not_active IP Right Cessation
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| KR970029411A (en) | 1997-06-26 |
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