KR0158848B1 - A racking and focusing coil adjustment device of optical pick-up actuator - Google Patents
A racking and focusing coil adjustment device of optical pick-up actuator Download PDFInfo
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- KR0158848B1 KR0158848B1 KR1019950045189A KR19950045189A KR0158848B1 KR 0158848 B1 KR0158848 B1 KR 0158848B1 KR 1019950045189 A KR1019950045189 A KR 1019950045189A KR 19950045189 A KR19950045189 A KR 19950045189A KR 0158848 B1 KR0158848 B1 KR 0158848B1
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- objective lens
- lens holder
- coil
- tracking
- adjustment coil
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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
- G11B7/0935—Details of the moving parts
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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
- G11B7/12—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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- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
본 발명은 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일 보정장치에 관한 것으로서 외주면에 포커싱 조정코일(111) 및 트랙킹 조정코일(112)이 부착된 대물렌즈홀더(110)를 갖는 광픽업 액츄에이터에 있어서, 상기 대물렌즈 홀더(110)가 전면부에 설치되는 코일설치대(104)를 갖는 고정부재(100)와, 상기 고정부재(100)의 코일설치대(104)내에 설치되어 대물렌즈 홀더(110)를 소정각도 회전시키는 회전부재(120)와, 상기 고정부재(100)가 상부면에 형성된 설치홈(91)내에 안치되고, 복수개의 지지대(80)를 저면에서 받쳐주는 받침판(90)과, 상기 받침판(90)에서 상부로 돌출된 지지대(80)상에 고정설치되어 내부에 변환기어부(51)가 장착되는 본체(50)와, 상기 본체(50)의 회전축(40)에 결합된 회전레버(30)에 의해 상·하로 이동하는 상·하 이동축(60)과, 상기 상·하 이동축(60)의 저면에 부착되어 대물렌즈홀더(110)의 외주면을 눌러주는 압압면(72)이 요홈(71)내에 형성된 누름부재(100)로 구성된 것을 특징으로 하는 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일 보정장치인바, 대물렌즈 홀더 주위에 부설된 트랙킹 및 포커싱 조정코일의 평탄도 및 직진도를 신속하고 정확하게 보정하도록 해준다.The present invention relates to a tracking and focusing adjustment coil correction apparatus for an optical pickup actuator, the optical pickup actuator having an objective lens holder (110) having a focusing adjustment coil (111) and a tracking adjustment coil (112) attached to an outer circumferential surface thereof. The objective lens holder 110 is provided in the fixing member 100 having the coil mounting bracket 104 installed on the front portion, and the coil mounting bracket 104 of the fixing member 100 to rotate the objective lens holder 110 at a predetermined angle. Rotating member 120 to rotate, 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 The main body 50 is fixedly installed on the support 80 protruding upward from the main body 50 to which the converter gear 51 is mounted, and the rotary lever 30 coupled to the rotating shaft 40 of the main body 50. Up and down moving shaft 60 moving up and down by the upper and lower, and the up and down moving shaft 60 In the tracking and focusing adjustment coil correction device of the optical pickup actuator, characterized in that the pressing surface 72 is attached to the bottom surface pressing the outer peripheral surface of the objective lens holder 110 consists of a pressing member 100 formed in the groove 71. This allows quick and accurate correction of the flatness and straightness of the tracking and focusing adjustment coils placed around the objective lens holder.
Description
제1도는 일반적인 와이어 타입 광픽업 액츄에이터의 사시도.1 is a perspective view of a general wire type optical pickup actuator.
제2도는 본 발명에 따른 보정장치의 정면도.2 is a front view of the compensator 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 회전부재의 구성단면도.Figure 4 is a cross-sectional view of the configuration of the rotating member according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
30 : 회전레버 40 : 회전축30: rotation lever 40: rotation axis
50 : 본체 60 : 상·하 이동축50: main body 60: up and down moving shaft
70 : 누름부재 80 : 지지대70: pressing member 80: support
90 : 받침판 100 : 고정부재90: support plate 100: fixing member
120 : 회전부재120: rotating member
본 발명은 광픽업 액츄에이터의 트랙킹 조정코일 및 포커싱 조정코일에 관한 것으로서, 특히 대물렌즈 홀더 주위에 감겨진 포커싱 조정코일과 그 포커싱 조정코일의 외주면에 접착된 트랙킹 조정코일의 평탄도 및 수직도를 정밀하게 보정하므로서 대물렌즈 홀더가 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 a tracking adjustment coil and a focusing adjustment coil of an optical pick-up actuator. In particular, the flatness and verticality of the focusing adjustment coil wound around the objective lens holder and the outer peripheral surface of the focusing adjustment coil are precisely adjusted. The present invention relates to a tracking and focusing adjustment coil correcting apparatus for an optical pickup actuator, which improves the performance of an optical pickup actuator by eliminating negative resonance generated when the objective lens holder operates.
일반적으로, 광픽업 액츄에이터는 제1도에 도시된 바와 같이, 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 대물렌즈 홀더(14)와, 상기 대물렌즈 홀더(14)의 외면소정위치에 설치된 상태에서 상기 내측요오크(10)에 끼워져 전류인가시 영구자석(12)과의 상호작용에 의하여 전자기력을 발생시켜 대물렌즈 홀더(14)의 광축방향움직임과 트랙킹방향 움직임을 제어하는 포커싱조정코일(17) 및 트랙킹조정코일(16)과, 상기 대물렌즈 홀더(14)의 양측 상하부에 돌설된 고정편(18)에 일단이 고정되고, 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 each side 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 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 objective lens holder 14 to be mounted, and fitted to 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 to generate electromagnetic force by interaction with the permanent magnet 12 when current is applied. Optical axis direction of the objective lens holder 14 One end is fixed to the focusing adjustment coil 17 and the tracking adjustment coil 16 and the fixing pieces 18 which protrude from both sides of the objective lens holder 14, and the other end is separately It is fixed to the fixing plate 19 and the PCB 20 of the suspension 21 is configured to attenuate the impact applied to the outside.
이와같이 구성되는 광픽업 액츄에어티(15)의 조립제작시 상기 서스펜션(21)을 설치하기 위해서는 그 서스펜션(21)의 일단을 상기 대물렌즈 홀더(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 at the time of 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 side thereof. The end is to be fixed to a separate fixing plate 19 and the PCB 20 which is located at the rear of the yoke 10.
이와같이, 상기한 대물렌즈 홀더(14)의 외주부에는 대물렌즈 홀더(14)를 포커싱방향으로 구동시키는 포커싱 조정코일(17)이 감겨진 상태로 접착되어 있으며, 이러한 포커싱 조정코일(17)의 양측면에 각각 두 개씩의 트랙킹 조정코일(19)이 유브이본드에 의해 접착 설치되어 진다.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 bonded to both sides of the focusing adjustment coil 17. Two tracking adjustment coils 19 are attached to each other by a UV bond.
그런데, 상기한 바와 같이 대물렌즈 홀더(14) 주위에 감겨져서 설치되는 포커싱조정코일(14) 주위에 감겨져서 설치되는 포커싱 조정코일(17)은 길이가 길고 굵기가 가는 와이어를 수백번의 회전수로 감겨진 상태에서 대물렌즈 홀더(14) 주위에 설치되기 때문에 포커싱 조정코일(17)이 대물렌즈 홀더(14) 주위에 긴밀하게 접촉되어지지 않고 외측으로 약간 굴곡지게 설치되는 경우가 발생되어지고, 이로인해 포커싱 조정코일(17)의 외주부에 본딩 접착되는 트랙킹 조정코일(16) 역시 외측방향으로 만곡지게 설치되므로서 대물렌즈 홀더(14)가 포커싱 및 트랙킹 구동방향으로 동작할 때 무게중심이 정확하지 않게 되어 대물렌즈 홀더(14)에 부공진이 발생되는 문제점이 있었다.However, as described above, the focusing adjustment coil 17 wound and installed around the focusing adjustment coil 14 wound and installed around the objective lens holder 14 has a long length and a thin wire for hundreds of revolutions. Since it is installed around the objective lens holder 14 in a wound state, the focusing adjustment coil 17 may be installed slightly curved outward without being in close contact with the objective lens holder 14. As a result, the tracking adjustment coil 16 bonded to the outer circumference of the focusing adjustment coil 17 is also installed to bend outwardly so that the center of gravity is not accurate when the objective lens holder 14 operates in the focusing and tracking driving directions. There was a problem that the negative resonance is generated in the objective lens holder (14).
특히, 자동차용 씨디플레이어의 광픽업장치에 사용되는 대물렌즈 홀더(14)의 크기는 작고 두께는 매우 얇기 때문에 대물렌즈 홀더(14)의 주위에 설치되는 트랙킹 조정코일(16) 및 트랙킹 조정코일(17)의 굴곡정도가 더욱더 커지게 되므로 대물렌즈 홀더(14)가 떨리는 현상인 부공진이 심하게 발생되어 진다.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 thereof 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 감안하여 안출한 것으로서, 대물렌즈 홀더 주위에 감겨진 포커싱 조정코일과 그 포커싱 조정코일의 외주면에 접착된 트랙킹 조정코일의 평탄도 및 수직도를 정밀하게 보정하므로서 대물렌즈 홀더가 동작할 때 떨림에 의해 발생되는 부공진을 해소하는 것이 목적이다.The present invention has been made in view of this point, and the objective lens holder is precisely corrected by correcting the flatness and verticality of the focusing adjustment coil wound around the objective lens holder and the outer peripheral surface of the focusing adjustment coil. The purpose is to eliminate the negative resonance caused by the vibration during operation.
이러한 목적은 외주면에 포커싱 조정코일 및 트랙킹 조정코일이 부착된 대물렌즈 홀더를 갖는 광픽업 액츄에이터에 있어서, 상기 대물렌즈 홀더가 전면부에 설치되는 코일 설치대를 갖는 고정부재와, 상기 고정부재의 코일 설치대 내에 설치되어 대물렌즈 홀더를 소정각도 회전시키는 회전부재와, 상기 고정부재가 상부면에 형성된 설치홈내에 안치되고, 복수개의 지지대를 저면에서 받쳐주는 받침판과, 상기 받침판에서 상부로 돌출된 지지대 상에 고정 설치되어 내부에 변환기어부가 장착되는 본체와 상기 본체의 회전축에 결합된 회전레버에 의해상·하로 이동하는 상·하 이동축과, 상기 상·하 이동축의 저면에 부착되어 대물렌즈 홀더의 외주면을 눌러주는 압압면이 요홈내에 형성된 누름부재로 구성된 광픽업 액츄에이터의 트랙킹 및 포커싱 조정코일 보정장치를 제공함으로써 달성된다.This object is an optical pickup actuator having an objective lens holder having a focusing adjusting coil and a tracking adjusting coil attached to an outer circumferential surface thereof, the fixing member having a coil mounting table on which the objective lens holder is mounted on a front surface thereof, and a coil mounting table of the fixing member. On the rotating member is installed in the rotating member for rotating the objective lens by a predetermined angle, the fixing member is placed in the mounting groove formed on the upper surface, the support plate for supporting a plurality of supports from the bottom surface, and the support projecting upward from the support plate It is fixedly mounted to the upper and lower moving shafts which are moved up and down by the main body to which the converter gear unit is mounted and the rotary lever coupled to the rotating shaft of the main body, and attached to the bottom of the upper and lower moving shafts, Tracking and focusing jaws of optical pickup actuators consisting of a pressing member whose pressing surface is formed in the groove It is achieved by providing the correction coil unit.
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 바와 같이 본 발명의 구성은 외주면에 포커싱 조정코일(111)및 트랙킹 조정코일(112)이 부착된 대물렌즈 홀더(110)를 갖는 광픽업 액츄에이터에 있어서, 상기 대물렌즈 홀더(110)가 전면부에 설치되는 코일 설치대(104)를 갖는 고정부재(100)와, 상기 고정부재(100)의 코일 설치대(104)내에 설치되어 대물렌즈 홀더(110)를 소정각도 회전시키는 회전부재(120)와, 상기 고정부재(100)가 상부면에 형성된 설치홈(91)내에 안치되고, 복수개의 지지대(80)를 저면에서 받쳐주는 받침판(90)과, 상기 받침판(90)에서 상부로 돌출된 지지대(80)상에 고정 설치되어 내부에 변환기어부(51)가 장착되는 본체(50)와, 상기 본체(50)의 회전축(40)에 결합된 회전레버(30)에 의해 상·하로 이동하는 상·하 이동축(60)과 상기 상·하 이동축(60)의 저면에 부착되어 대물렌즈 홀더(110)의 외주면을 눌러주는 압압면(72)이 요홈(71)내에 형성된 누름부재(70)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 having a focusing adjustment coil 111 and a tracking adjustment coil 112 attached to an outer circumferential surface thereof. The objective lens holder 110 is provided in the fixing member 100 having the coil mounting table 104 installed on the front portion, and the coil mounting table 104 of the fixing member 100 to the objective lens holder 110 at a predetermined angle. Rotating member 120 to rotate, 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 The main body 50 is fixedly installed on the support 80 protruding upward from the main body 50 and the rotating lever 30 coupled to the rotating shaft 40 of the main body 50. Attached to the upper and lower moving shafts 60 and the bottom of the upper and lower moving shafts 60 moving up and down by the objective lens. Pressure apmyeon 72 to press the outer circumferential surface of the further (110) is composed of a pressing member 70 formed in the groove (71).
그리고, 상기 고정부재(100)는 상기 누름부재(70)가 진입하기 위한 진입홈(102)이 형성되며, 상기 진입홈(102)의 바닥면에서 일정높이 돌설된 코일 설치대(104)의 전면부에는 원형의 하우징(105)이 형성된다.In addition, the fixing member 100 has an entry groove 102 for entering the pressing member 70 is formed, the front portion of the coil mounting table 104 protruding a certain height from the bottom surface of the entry groove 102 The circular housing 105 is formed.
또한, 상기 회전부재(120)는 상기 코일 설치대(104)내에 설치되어 동력을 발생시키는 구동모터(121)와, 상기 구동모터(121)의 회전력을 적절하게 변속시키는 변속 기어부(122)와, 상기 변속기어부(122)의 마지막 기어에 맞물려 코일 설치대(104)의 하우징(105)내에서 회전하는 회전축(123)과, 상기 회전축(123)의 전면부로 일정한 간격을 갖도록 일정간격 돌설되어 대물렌즈 홀더(110)의 사각홈(113)이 끼워지는 고정돌기(124)로 구성된다.In addition, the rotating member 120 is installed in the coil mounting table 104, the drive motor 121 for generating power, the shift gear portion 122 for appropriately shifting the rotational force of the drive motor 121, Rotating shaft 123 rotates in the housing 105 of the coil mounting table 104 in engagement with the last gear of the transmission gear portion 122, and is protruded at regular intervals so as to have a predetermined interval to the front portion of the rotating shaft 123 The square groove 113 of the 110 is composed of a fixing projection 124 is fitted.
이하, 첨부도면에 의거하여 본 발명의 작용·효과를 상세히 설명하도록 한다.Hereinafter, the operation and effects of the present invention will be described in detail with reference to the accompanying drawings.
먼저, 대물렌즈 홀더(110) 주위에 포커싱 조정코일(111) 및 트랙킹 조정코일(112)이 조립된 상태에서 포커싱 조정코일(111)과 트랙킹 조정코일(112)의 수직도 및 평탄도를 보정하고자 한다면, 대물렌즈 홀더(110)의 사각홈(113)을 고정부재(100)인 코일 설치대(104)의 전면으로 돌설된 고정돌기(124)에 끼워 주므로서 대물렌즈 홀더(110)를 코일 설치대(104)의 하우징(105)의 전면부분의 벽면에 고정시키도록 한다.First, to correct the verticality and flatness of the focusing adjustment coil 111 and the tracking adjustment coil 112 with the focusing adjustment coil 111 and the tracking adjustment coil 112 assembled around the objective lens holder 110. If so, the square lens 113 of the objective lens holder 110 is fitted to the fixing protrusion 124 protruding toward the front of the coil mounting unit 104, which is the fixing member 100, so that the objective lens holder 110 is mounted on the coil mounting table ( It is fixed to the wall surface of the front portion of the housing 105 of 104.
이러한 상태에서 회전레버(30)를 손으로 잡고서 위에서 아래 방향으로 눌러서 회전축(40)을 회전시키게 되면, 회전축(40)의 회전력이 변환기어부(51)를 통해서 상·하 이동축(60)을 하부로 이동시키게 되고 상·하 이동축(60)의 끝단부에 설치된 누름부재(70)가 서서히 하측방향으로 이동하게 된다.In this state, when the rotary lever 40 is rotated by holding the rotary lever 30 by hand and pressing it downward from the top, the rotational force of the rotary shaft 40 lowers the upper and lower movable shafts 60 through the converter gear 51. The pressing member 70 provided at the end of the up / down moving shaft 60 is gradually moved downward.
그리고, 누름부재(70)의 하측이동에 의해 누름부재(70)의 요홈(71)으로 대물렌즈 홀더(110)가 끼워지게 되고, 요홈(71)의 압압면(72)이 트랙킹조정코일(112)과 포커싱 조정코일(111)을 고정돌기(105)로 누르게 되며서 트랙킹조정코일(112) 및 포커싱 조정코일(111)이 가지고 있는 굴곡에 의한 오차 한계를 정확하게 압압시켜 보정하게 된다.Then, the objective lens holder 110 is fitted 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 이루어진 후 눌려져 있는 회전레버(30)를 원상태로 젖히게 되면, 상기한 반대의 과정을 거쳐서 누름부재(70)가 대물렌즈 홀더(110)로부터 원상태로 복귀되어 진다.On the other hand, when the rotation lever 30 is pressed to the original state after the correction is made, the pressing member 70 is returned to the original state from the objective lens holder 110 through the above reverse process.
그리고, 대물렌즈 홀더(110)의 반대후 방향에 설치된 포커싱 조정코일(111) 및 트랙킹 조정코일(112)의 평탄도 및 직진도를 보정시키고자 한다면 코일 설치대(104)내에 설치된 회전부재(120)인 구동모터(121)를 구동시키게 되면 변속기어부(122)에서 변속되어진 회전력이 변속기어부(122)의 마지막 기어에 맞물려 있는 회전축(123)을 하우징(105) 내에서 180도 각도 회전시키면서 회전축(123)의 고정돌기(124)에 끼워져 대물렌즈 홀더(110) 역시 같이 회전하게 된다.And, if you want to correct the flatness and straightness of the focusing adjustment coil 111 and the tracking adjustment coil 112 installed in the opposite rear direction of the objective lens holder 110, the rotating member 120 installed in the coil mounting table 104 When the in-drive motor 121 is driven, the rotating shaft 123 is rotated 180 degrees in the housing 105 by rotating the rotational force shifted from the transmission gear 122 to the last gear of the transmission gear 122. Inserted into the fixing protrusion 124 of the objective lens holder 110 is also rotated together.
이와같이 회전축(123)의 고정돌기(124)가 180도 회전함에 따라 대물렌즈 홀더(110)의 반대측 트랙킹 조정코일(112) 및 포커싱 조정코일(111)이 상부방향으로 위치하게 되고, 이러한 상태에서 상기한 회전레버(30)를 다시 눌러서 누름부재(70)의 압압면으로 조정코일(111)(112)의 굴곡 부분을 보정시키면 된다.As the fixing protrusion 124 of the rotation shaft 123 is rotated 180 degrees, the tracking adjustment coil 112 and the focusing adjustment coil 111 on the opposite side of the objective lens holder 110 are positioned upward. It is enough to correct the bent portion of the adjustment coils 111 and 112 by the pressing surface of the pressing member 70 by pressing the rotary lever 30 again.
이와 같이 계속해서 다른 대물렌즈 홀더(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.
따라서, 종래의 광픽업 액츄에이터는 포커싱 조정코일 및 트랙킹 조정코일의 평탄도 및 직진도를 보정하지 못하므로서 부공진이 발생되는 것과는 다르게 본 발명에 따른 보정장치를 사용하게 되면 대물렌즈 홀더를 고정부재인 코일 설치대의 고정돌기에 끼워서 고정시킨 후 회전레버를 손으로 회전시켜 누름부재의 압압면으로 트랙킹 조정코일 및 포커싱 조정코일의 측면부를 긴밀히 눌러주므로써 대물렌즈 홀더의 무게중심을 정확히 잡아주어서 대물렌즈 홀더의 부공진을 방지하여서 광픽업 액츄에이터의 성능을 향상시키도록 해주는 매우 유용한 발명인 것이다.Therefore, the conventional optical pickup actuator does not correct the flatness and straightness of the focusing adjustment coil and the tracking adjustment coil, and thus, unlike the occurrence of negative resonance, when the compensation device according to the present invention is used, Insert and fix to the fixing protrusion of the coil mount, and then rotate the rotary lever by hand and press the side of the tracking adjustment coil and focusing adjustment coil tightly to the pressing surface of the pressing member to accurately grasp the center of gravity of the objective lens holder. It is a very useful invention to improve the performance of the optical pickup actuator by preventing the secondary resonance of the.
또한, 코일 설치대 내에서 설치된 회전부재인 구동모터를 작동시켜서 대물렌즈 홀더가 끼워진 고정돌기를 180도 자동으로 회전시키므로서 대물렌즈 홀더 양측면에 부설된 트랙킹 조정코일 및 포커스 조정코일의 보정작업을 신속하고 정확하게 수행하도록 해주는 것이다.In addition, by operating the drive motor, which is a rotating member installed in the coil mounting table, rotates the fixing projection in which the objective lens holder is inserted by 180 degrees, thereby quickly correcting the tracking adjustment coil and the focus adjustment coil installed on both sides of the objective lens holder. It is to be done correctly.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950045189A KR0158848B1 (en) | 1995-11-30 | 1995-11-30 | A racking and focusing coil adjustment device of optical pick-up actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950045189A KR0158848B1 (en) | 1995-11-30 | 1995-11-30 | A racking and focusing coil adjustment device of optical pick-up actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970029405A KR970029405A (en) | 1997-06-26 |
| KR0158848B1 true KR0158848B1 (en) | 1999-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950045189A KR0158848B1 (en) | 1995-11-30 | 1995-11-30 | A racking and focusing coil adjustment device of optical pick-up actuator |
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| Country | Link |
|---|---|
| KR (1) | KR0158848B1 (en) |
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1995
- 1995-11-30 KR KR1019950045189A patent/KR0158848B1/en not_active IP Right Cessation
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| KR970029405A (en) | 1997-06-26 |
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