KR100494468B1 - Optical pick-up - Google Patents
Optical pick-up Download PDFInfo
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- KR100494468B1 KR100494468B1 KR10-2002-0053256A KR20020053256A KR100494468B1 KR 100494468 B1 KR100494468 B1 KR 100494468B1 KR 20020053256 A KR20020053256 A KR 20020053256A KR 100494468 B1 KR100494468 B1 KR 100494468B1
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- base
- hole
- screw
- wire 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
- G11B7/08—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
- G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
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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
- G11B7/0932—Details of sprung supports
-
- 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
-
- 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1372—Lenses
- G11B7/1374—Objective lenses
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
종래의 요크플레이트를 단지 필요부분으로 추출된 요크블럭로 대체하고, 와이어 홀더를 특수구조로 제공함으로써 대물렌즈의 래디얼 및 트래킹 방향의 스큐조정을 용이하게 한 광 픽업 및 그 조립방법이 개시된다.An optical pick-up and assembly method thereof that facilitate skew adjustment in the radial and tracking directions of an objective lens by replacing a conventional yoke plate with only a yoke block extracted only as necessary and providing a wire holder in a special structure are disclosed.
Description
본 발명은 광 픽업에 관한 것이다. 보다 상세하게는 대물렌즈의 레디얼(radial)방향과 탄젼셜(tangential) 방향의 스큐(skew) 조정이 용이하도록 개선된 광픽업 및 그 조립방법에 관한 것이다.The present invention relates to an optical pickup. More particularly, the present invention relates to an improved optical pickup and an assembly method thereof for easily adjusting skew in a radial direction and a tangential direction of an objective lens.
광 픽업장치는 도 1 및 도 2에 개략적으로 도시된 바와 같이 광원(1)에서 출사된 광빔은 반사미러(2)에 의해 반사된 후 콜리메이터 렌즈(3)를 통해 평행광으로 변환된 다음 엑츄에이터의 보빈에 탑재된 대물렌즈(4)에 의해 광 디스크(D)의 트랙상에 스폿을 형성한 후 동일한 경로로 반사된 빔을 미도시된 검출기로 검출하여 광디스크상에 기록된 정보를 재생하거나 광 디스크에 정보를 기록하는 장치이다.In the optical pickup device, as shown schematically in FIGS. 1 and 2, the light beam emitted from the light source 1 is reflected by the reflecting mirror 2 and then converted into parallel light through the collimator lens 3, and then the A spot is formed on the track of the optical disk D by the objective lens 4 mounted on the bobbin, and then the beam reflected by the same path is detected by a detector not shown to reproduce information recorded on the optical disk or It is a device for recording information.
이러한 광 픽업장치는 대물렌즈(4)가 광 디스크(D)의 표면에 대해 평행한 상태이어야 대물렌즈(4)에서 집속된 광빔의 초점이 광 디스크(D)의 기록 피트의 트랙에서 이탈되지 않으며, 만약 대물렌즈가 디스크의 표면에 스큐된 경우에는 대물렌즈(4)의 포커싱에러나 트래킹에러를 보정해야 한다.This optical pickup device requires that the objective lens 4 be parallel to the surface of the optical disk D so that the focus of the light beam focused on the objective lens 4 does not depart from the track of the recording pit of the optical disk D. If the objective lens is skewed on the surface of the disc, the focusing or tracking error of the objective lens 4 should be corrected.
따라서 종래의 대물렌즈의 스큐조정방법으로는 요크플레이트(6)의 저면에 구좌요크(7)를 마련하고 픽업베이스(8)의 중심공(9)에는 구좌요크면에 대응되는 구면을 형성하여 이들 면을 상호 조정한 후 픽업베이스(8)와 요크플레이트(6)사이에 본딩처리하거나 픽업베이스(8)와 요크플레이트(6)를 나사(10)를 체결함으로써 이루어졌다.Therefore, in the conventional skew adjustment method, the spherical yoke 7 is provided on the bottom surface of the yoke plate 6 and the spherical surface corresponding to the spherical yoke surface is formed in the center hole 9 of the pickup base 8. After mutual adjustment of the surfaces, bonding was carried out between the pick-up base 8 and the yoke plate 6 or by fastening the pick-up base 8 and the yoke plate 6 to the screw 10.
그러나, 이와 같은 종래의 광픽업 장치에 있어서는, 본딩처리나 나사체결시 요크플레이트와 픽업베이스의 접촉면이 틀어지는 현상이 발생하여 대물렌즈 스큐조정에 신뢰성 및 정밀성을 저하시키는 단점이 있었으며, 스큐조정을 위해 고가품인 요크플레이트가 필요했으므로 광픽업장치의 제조단가가 상승되었다. 또한 종래의 방식에 의하면, 광 픽업제조공정은 광학계가 장착된 픽업베이스를 조립한 다음 엑츄에이터 어세이를 조립한 후 대물렌즈의 스큐 조정작업이 이루어졌기 때문에 공정이 복잡했을 뿐만 아니라 이에 따른 인력비의 상승을 가져 왔다.However, such a conventional optical pickup device has a disadvantage in that the contact surface between the yoke plate and the pick-up base is distorted during bonding or screwing, thereby degrading reliability and precision in the objective lens skew adjustment. Since the expensive yoke plate was needed, the manufacturing cost of the optical pickup device was increased. In addition, according to the conventional method, the optical pickup manufacturing process is not only complicated because the assembly of the pick-up base equipped with the optical system, and then the actuator assembling and the skew adjustment of the objective lens are performed, and thus the labor cost is reduced. It has risen.
본 발명은 상기 문제점을 해결하기 안출된 것으로, 본 발명의 목적은 대물렌즈의 레디얼(radial)방향과 탄젼셜(tangential) 방향의 스큐(skew) 조정이 용이한광픽업 및 그 조립방법를 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an optical pickup and a method of assembling the skew in the radial direction and the tangential direction of the objective lens.
본 발명의 목적을 달성하기 위해, 본 발명에 따른 광 픽업은 중심공 양측으로 소정거리 이격하여 천공된 두 쌍의 요크블럭삽입공, 상기 요크블럭 삽입공의 일측으로 형성된 조정홈 및 상기 조정홈의 일측으로 형성된 나사체결공을 포함하는 픽업베이스와; 상기 픽업베이스의 요크블럭 삽입공에 삽입고정된 ㄷ 자 형상의 요크블럭과; 상기 요크블럭내에 장착 고정되는 마그네트와; 저면에 반구형상으로 돌출된 조정돌기와 일단이 후면 하단에서 연장형성되고 타단은 픽업베이스의 상면에서 부상되도록 절곡형성되며 끝단에 나사공이 마련된 절곡부를 구비하는 와이어 홀더와; 상기 와이어 홀더의 후면에 장착되는 피씨비 플레이트와; 서스펜션 와이어에 의해 픽업베이스에서 부상되게 지지되며 대물렌즈를 상면에 탑재하고 있는 보빈을 포함하여 제공함으로써 달성된다.In order to achieve the object of the present invention, the optical pickup according to the present invention is a pair of yoke block insertion hole, the adjustment groove formed on one side of the yoke block insertion hole and the adjustment groove formed by being spaced a predetermined distance to both sides of the center hole Pick-up base including a screw fastening hole formed to one side; A c-shaped yoke block inserted and fixed in the yoke block insertion hole of the pickup base; A magnet mounted and fixed in the yoke block; A wire holder having a bent portion protruding in a hemispherical shape on the bottom and one end extending from the bottom of the rear side, the other end being bent to rise from the upper surface of the pickup base, and having a screw hole at the end; A PCB plate mounted on a rear side of the wire holder; This is accomplished by providing a bobbin which is supported to be lifted from the pickup base by the suspension wire and which has the objective lens mounted on the upper surface.
또한 본 발명의 목적은, 중심공 양측으로 소정거리 이격하여 두 쌍의 요크블럭삽입공이 천공되며 상기 요크블럭 삽입공의 일측으로 형성된 조정홈을 형성하고 상기 조정홈의 일측으로는 나사체결공이 형성된 픽업베이스를 마련하는 단계와; 두 개의 ㄷ 자 형상의 마련된 요크블럭을 상기 픽업베이스의 요크블럭삽입고에 삽입하여 고정하는 단계와; 마그네트를 상기 요크블럭내에 장착하는 단계와; 서스펜션와이어가 관통되도록 관통구가 형성되며, 저면에는 반구형상의 저정돌기가 돌출되며, 후면 하단으로는 끝단이 픽업베이스에서 부상하도록 절곡형성되며 끝단에 나사공이 형성된 절곡부를 포함하는 와이어 홀더를 마련하는 단계와; 서스펜션 와이어에 의해 픽업베이스에서 부상되게 지지되며 상면에는 대물렌즈를 탑재하는 보빈을 마련하는 단계와: 마련된 피씨비 플레이트를 회전하여 보빈에 탑재된 대물렌즈의 래디얼 틸트를 조정한 후 피씨비 플레이트를 와이어 홀더에 고정시키는 단계와; 상기 와이어 홀더의 절곡부에 형성된 나사공과 픽업베이스의 나사체결공에 체결된 나사를 조이거나 풀면서 대물렌즈의 트래킹 스큐를 조정한 후 와이어 홀더를 픽업베이스에 고정하는 단계를 포함하는 광 픽업 조립방법을 제공함으로써 달성된다.In addition, an object of the present invention, two pairs of yoke block insertion holes are drilled at a predetermined distance from both sides of the center hole to form an adjustment groove formed on one side of the yoke block insertion hole, and one side of the adjustment groove picks up a screw fastening hole. Providing a base; Inserting and fixing two c-shaped yoke blocks into the yoke block inserter of the pick-up base; Mounting a magnet in the yoke block; The through hole is formed to penetrate the suspension wire, the bottom surface is provided with a hemispherical low protrusion projections, the lower end of the lower end is bent to rise in the pickup base, and providing a wire holder including a bent portion formed with a screw hole at the end Wow; The step of providing a bobbin which is supported to be lifted from the pickup base by the suspension wire and mounted on the upper surface: and by adjusting the radial tilt of the objective lens mounted on the bobbin by rotating the provided PCB plate to the wire holder Fixing; Adjusting the tracking skew of the objective lens while tightening or loosening the screw fastened to the screw hole formed in the bent portion of the wire holder and the screw fastening hole of the pickup base, and then fixing the wire holder to the pickup base. Is achieved by providing
이하, 첨부도면을 참고하여 본 발명의 일실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;
도 3은 본 발명에 따른 광 픽업의 분해사시도이다.3 is an exploded perspective view of the optical pickup according to the present invention.
이를 참고하면, 본 발명에 따른 광픽업장치는 중앙에 레이저 다이오드(21)에서 출사된 광빔이 반사경(22)에 의해 반사된 후 광 디스크(D)의 방향으로 투사될 수 있도록 중심공(23)이 형성되며 상기 중심공(23)의 양측으로 한 쌍의 요크블럭삽입공(24)이 소정거리 이격되어 천공된 픽업베이스(20)를 포함한다. Referring to this, the optical pickup device according to the present invention is the center hole 23 so that the light beam emitted from the laser diode 21 in the center is reflected by the reflector 22 and then projected in the direction of the optical disk (D) Is formed and a pair of yoke block insertion hole 24 on both sides of the center hole 23 includes a pick-up base 20 perforated spaced a predetermined distance.
상기 요크블럭삽입공(24)은 제1삽입공(24-1)과 제2삽입공(24-2)으로 구분되며, 양 삽입공(24)의 길이는 요크블럭(30)에 대응하여 동일 또는 상이할 수 있다. 또한 픽업베이스(20)는 와이어 홀더(52)의 조정돌기(52-2)가 삽입되도록 제2삽입공(24-2)의 일측에 형성된 반구 형상의 조정홈(25)을 구비한다. 또한 상기 조정홈(25)의 일측으로는 나사체결공(26)이 형성된다. The yoke block insertion hole 24 is divided into a first insertion hole 24-1 and a second insertion hole 24-2, and the length of both insertion holes 24 corresponds to the yoke block 30. Or may be different. In addition, the pickup base 20 has a hemispherical adjustment groove 25 formed at one side of the second insertion hole 24-2 so that the adjustment protrusion 52-2 of the wire holder 52 is inserted. In addition, a screw fastening hole 26 is formed at one side of the adjusting groove 25.
한편 본 발명은 종래 광픽업의 엑츄에이터에서의 요크플레이트(6)를 생략하고 필요부분만으로 대신 제공된 요크블럭(30)을 포함한다. 요크블럭(30)은 제1돌기(30-1)와 제2돌기(30-2)를 구비한 전체적으로 ㄷ 자 형상이며 두개로 마련되어 상기 요크블럭 삽입공에 각각 삽입된다. 제1돌기(30-1)와 제2돌기(30-2)의 길이는 동일하거나 상이할 수 있다. On the other hand, the present invention includes a yoke block (30) provided instead of only the necessary part by omitting the yoke plate (6) in the actuator of the conventional optical pickup. The yoke block 30 has a c-shape having two first protrusions 30-1 and a second protrusion 30-2 and is inserted into the yoke block insertion holes. The length of the first protrusion 30-1 and the second protrusion 30-2 may be the same or different.
또한 본 발명은 대물렌즈(51)의 레디얼 및 탄젼셜 방향의 스큐를 용이하게 조정하기 위해 특수제작된 와이어 홀더(52)를 포함한다. 여기서 광 디스크(D)의 기록피트에 대해 대물렌즈(51)에서 형성하는 레이저 빔의 초점의 이동이 광 디스크의 반경방향인 것을 레디얼방향이라 하며, 반경방향의 수직방향인 것을 탄젼셜 방향이라 한다. 이는 본 발명에 따른 광 픽업의 작용과 함께 서술되는 도 6 및 도 7에서 보다 상세히 설명키로 한다. The present invention also includes a specially made wire holder 52 for easily adjusting the skew in the radial and tangential directions of the objective lens 51. In this case, the radial direction of the optical disk in which the focus of the laser beam formed by the objective lens 51 with respect to the recording feet of the optical disk D is a radial direction, and the radial vertical direction is called a tangential direction. . This will be described in more detail in FIGS. 6 and 7 described together with the operation of the optical pickup according to the present invention.
도시된 바와 같이, 본 발명에 따른 와이어 홀더(52)는 그 저면(52-1)에 픽업베이스(20)의 조정홈(25)에 삽입되어 면조정이 가능한 반구형상의 조정돌기(52-2)를 구비한다. 또한 홀더(52)는 서스펜션와이어(53)가 관통되도록 전면(52-3)에서 후면(52-4)으로 관통되는 관통공(52-5)을 구비하며, 대물렌즈(51)의 포커싱 및 트래킹구동시 서스편션 와이어(53)가 발진한는 것을 방지하도록 겔이 유입되는 발진방지공(52-6)이 상하방향으로 형성된다. 또한 와이어 홀더(52)는 일단이 후면(52-4)하단에서 연장형성되고 타단은 픽업베이스(20)의 상면에서 부상되게 절곡형성되며 끝단에 나사공(52-7)이 마련된 절곡부(52-8)를 구비한다. 후면(52-4)의 중앙에는 피씨비 플레이트(54)를 고정하도록 나사공(52-9)이 형성되어 있다.As shown, the wire holder 52 according to the present invention is inserted into the adjustment groove 25 of the pick-up base 20 on the bottom surface 52-1 of the hemispherical adjustment protrusion 52-2, which is capable of surface adjustment. It is provided. In addition, the holder 52 has a through hole 52-5 penetrating from the front surface 52-3 to the rear surface 52-4 so that the suspension wire 53 penetrates, and focusing and tracking of the objective lens 51 is performed. To prevent the oscillation of the suspension wire 53 during driving, the oscillation prevention hole 52-6 into which the gel is introduced is formed in the vertical direction. In addition, the wire holder 52 is one end is formed extending from the lower end of the rear 52-4, the other end is formed to be bent to rise from the upper surface of the pickup base 20, the bent portion 52 is provided with a screw hole (52-7) at the end -8). A screw hole 52-9 is formed at the center of the rear surface 52-4 to fix the PCB plate 54.
상기 절곡부(52-8)의 나사공(52-7)과 픽업베이스(20)의 나사체결공(26)은 서로 나사에 의해 체결되며, 나사에는 스트링(70)이 개재된다. The screw hole 52-7 of the bend portion 52-8 and the screw fastening hole 26 of the pickup base 20 are fastened to each other by screws, and a string 70 is interposed between the screws.
보빈(55)은 그 상면에 대물렌즈(51)가 탑재되며, 그 측면으로는 대물렌즈(51)를 포커싱 방향 및 트래킹 방향으로 구동시키도록 포커싱 코일(55-1) 및 트래킹 코일(55-2)이 권선되어 있다. 이러한 보빈(55)은 일단이 코일 피씨비(56)에 납땜되고 타단은 와이어 홀더(53)의 관통공(52-6)을 관통하여 서스펜션 피씨비(54)에 고정되는 서스펜션 와이어(53)에 부상되게 지지된다. The bobbin 55 has an objective lens 51 mounted on an upper surface thereof, and a focusing coil 55-1 and a tracking coil 55-2 on the side thereof to drive the objective lens 51 in a focusing direction and a tracking direction. ) Is wound. One end of the bobbin 55 is soldered to the coil PC 56, and the other end penetrates through the through hole 52-6 of the wire holder 53 to be suspended in the suspension wire 53 fixed to the suspension PC 54. Supported.
이와 같이 구성된 본 발명에 따른 광 픽업장치의 조립과정과 이에 따른 대물렌즈의 스큐조정과정을 도 4 내지 도 7을 참고하여 설명한다. 도 4는 본 발명에 따른 광 픽업의 결합사시도이며 도 5는 본 발명에 따른 광 픽업의 결합단면도이며, 도 6 및 도 7은 본 발명에 따른 광 픽업의 스큐조정방법을 도시한 도면이다.The assembling process of the optical pickup device and the skew adjustment process of the objective lens according to the present invention configured as described above will be described with reference to FIGS. 4 to 7. 4 is a combined perspective view of the optical pickup according to the present invention, Figure 5 is a combined cross-sectional view of the optical pickup according to the present invention, Figure 6 and Figure 7 shows a skew adjustment method of the optical pickup according to the present invention.
먼저, 레이저 다이오드(21)와 반사경(22)등의 광학계가 장착된 픽업베이스(20)의 요크블럭삽입공(24)에 요크블록(30)을 삽입한다. 즉 요크블록(30)의 제1돌기(30-1) 및 제2돌기(30-2)가 제1삽입공(24-1) 및 제2삽입공(24-2)에 삽입되게 한다. 요크블록(30)의 삽입 후 요크블록(30)과 픽업베이스(20)의 접촉면을 본딩처리하여 요크 블럭(30)을 픽업베이스(20)에 고정시킨다. First, the yoke block 30 is inserted into the yoke block insertion hole 24 of the pickup base 20 on which the optical system such as the laser diode 21 and the reflector 22 is mounted. That is, the first protrusion 30-1 and the second protrusion 30-2 of the yoke block 30 are inserted into the first insertion hole 24-1 and the second insertion hole 24-2. After the yoke block 30 is inserted, the contact surfaces of the yoke block 30 and the pickup base 20 are bonded to fix the yoke block 30 to the pickup base 20.
그 후 고정된 요크블럭(20)의 제1돌출부(30-1) 측면에 마그네트(60)를 장착시킨다. Thereafter, the magnet 60 is mounted on the side of the first protrusion 30-1 of the fixed yoke block 20.
그 다음으로 본 발명에 따른 와이어 홀더(52)의 관통공(52-5)에 서스펜션 와이어(52-5)를 관통시킨 후, 와이어(53)의 일단은 보빈(55)의 측면에 구비된 코일 피씨비(56)에 납땜하고 와이어(53)의 타단은 피씨비 플레이트(54)에 고정시켜 제공된 엑츄에이터를 픽업베이스(20)에 장착시키게 된다. 즉 와이어 홀더(52)의 저면(52-1)에 형성된 조정돌기(52-2)를 픽업베이스(20)의 조정홈(25)에 삽입시키며, 이에 따라 서스펜션 와이어(53)에 의해 지지된 보빈(55)은 요크블록(30)의 제1돌기(30-1)에 장착된 마그네트(60)와 제2돌기(30-2) 사이의 공간으로 부상되게 위치한다. Next, after passing the suspension wire 52-5 through the through hole 52-5 of the wire holder 52 according to the present invention, one end of the wire 53 is a coil provided on the side of the bobbin 55 The solder is connected to the PC 56 and the other end of the wire 53 is fixed to the PC plate 54 to mount the provided actuator to the pickup base 20. That is, the adjustment protrusion 52-2 formed on the bottom surface 52-1 of the wire holder 52 is inserted into the adjustment groove 25 of the pickup base 20, and thus the bobbin supported by the suspension wire 53. 55 is positioned to float to the space between the magnet 60 and the second protrusion 30-2 mounted on the first protrusion 30-1 of the yoke block 30.
여기서, 대물렌즈(51)가 디스크(D)의 표면과 평행되도록 대물렌즈(51)의 스큐조정작업이 이루어지면서 본 발명에 따른 광픽업장치의 조립이 완성된다. Here, the skew adjustment operation of the objective lens 51 is performed such that the objective lens 51 is parallel to the surface of the disk D, and the assembly of the optical pickup apparatus according to the present invention is completed.
대물렌즈(51)의 래디얼방향의 스큐조정은 서스펜션 와이어(53)의 일단이 고정된 피씨비 플레이트(54)를 회전시켜 실시한다. 즉 도 6에 도시된 바와 같이 대물렌즈(51)가 디스크의 반경방향 즉 래디얼 방향으로 스큐된 경우에는 피씨비 플레이트(54)를 대물렌즈(51)가 스큐된 반대 방향(화살표 방향)으로 회전시킨다. 그러면 피씨비 플레이트에 고정되어 있는 서스펜션 와이어(53)를 통해 보빈(55)에 탑재된 대물렌즈(51)가 광 디스크(D)의 표면과 평행되게 한다. 대물렌즈(51)의 스큐가 조정된 후에는 피씨비 플레이트(54)를 와이어 홀더(52)의 후면(52-4)에 나사(S)를 통해 장착시킨다. The skew adjustment in the radial direction of the objective lens 51 is performed by rotating the PCB plate 54 to which one end of the suspension wire 53 is fixed. That is, as shown in FIG. 6, when the objective lens 51 is skewed in the radial direction of the disc, the radial direction is rotated, the PCB plate 54 is rotated in the opposite direction (arrow direction) in which the objective lens 51 is skewed. The objective lens 51 mounted on the bobbin 55 is then parallel to the surface of the optical disk D via the suspension wire 53 fixed to the PCB plate. After the skew of the objective lens 51 is adjusted, the PCB plate 54 is mounted to the rear surface 52-4 of the wire holder 52 through a screw S.
또한 대물렌즈(51)의 트래킹 방향의 스큐조정은 와이어 홀더(52)의 절곡부(52-8)를 이용하여 실시한다. 즉 도 7에 도시된 바와 같이, 대물렌즈(51)가 디스크의 반경방향과 수직방향, 즉 트래킹 방향으로 스큐된 경우에는, 와이어 홀더(52)의 절곡부(52-8)의 끝단에 형성된 나사공(52-7)과 픽업베이스(20)상의 나사체결공(26)에 체결된 나사(S)를 조이게 된다. 나사(S)를 조임으로써 와이어 홀더의 조종돌기(52-2)를 지점으로 대물렌즈(51)는 화살표의 방향으로 점차 상승하게 되어 대물렌즈(51)가 광 디스크(D)S의 표면과 평행을 이루게 된다. 이 때, 나사사이에 개재된 스프링(70)은 절곡부(52-8)를 탄지한다. 반면, 대물렌즈(51)가 반대로 스큐된 경우에는 나사(S)를 풀게 되며 다시 조정돌기(52-2)를 지점으로 대물렌즈(51)가 점차 하강하게 되어 광 디스크(D)와 수평을 이룬다. 대물렌즈(51)의 탄젼셜 스큐가 조정된 후에는 와이어 홀더의 저면(52-1)을 본딩에 의해 고정시킨다. In addition, skew adjustment of the objective lens 51 in the tracking direction is performed by using the bent portion 52-8 of the wire holder 52. That is, as shown in FIG. 7, when the objective lens 51 is skewed in the radial direction perpendicular to the disc, i.e. in the tracking direction, the b formed at the end of the bend 52-8 of the wire holder 52 Tighten the screw (S) fastened to the thread fastening hole 26 on the thread hole (52-7) and the pickup base (20). By tightening the screw S, the objective lens 51 gradually rises in the direction of the arrow toward the control projection 52-2 of the wire holder, so that the objective lens 51 is parallel to the surface of the optical disk D. Will be achieved. At this time, the spring 70 interposed between the screws touches the bent portion 52-8. On the other hand, when the objective lens 51 is skewed in the opposite direction, the screw S is loosened, and the objective lens 51 gradually descends to the adjustment protrusion 52-2 to be horizontal to the optical disk D. . After the tangential skew of the objective lens 51 is adjusted, the bottom surface 52-1 of the wire holder is fixed by bonding.
이로써, 대물렌즈의 래디얼 및 트래킹방향의 스큐의 조정이 완성됨과 동시에 본 발명에 따른 광 픽업장치의 조립이 완성된다. Thus, the adjustment of the skew in the radial and tracking directions of the objective lens is completed, and the assembly of the optical pickup device according to the present invention is completed.
이상과 같이 살펴본 바와 같이, 본 발명에 따른 광 픽업 및 그 조립방법에 의하면, 종래의 요크플레이트를 단지 필요부분으로 추출된 요크블럭로 대체함으로써 광 픽업의 제조비를 낮추고 광픽업의 구조를 소형화한 효과가 있다. 또한 와이어 홀더의 종래구조를 특수구조로 대체함으로써 대물렌즈의 래디얼 및 트래킹 방향의 스큐조정을 용이하게 한 효과가 있다. 또한 픽업베이스와 엑츄에이터를 각각 조립한 조립된 픽업베이스와 엑츄에이터의 구좌요크를 조정함으로써 대물렌즈 스큐조정이 이루어졌던 종래에 비해, 본 발명에 따르면 제공된 픽업베이스에 엑츄에이터를 조립하면서 동시에 대물렌즈의 스큐조정이 행해지므로, 공정이 단순화 되고 이에 따른 인력비의 절감을 가져오는 효과가 있다. As described above, according to the optical pickup and the assembly method thereof according to the present invention, by replacing the conventional yoke plate with only the yoke block extracted as a necessary portion, the effect of lowering the manufacturing cost of the optical pickup and miniaturizing the structure of the optical pickup There is. In addition, by replacing the conventional structure of the wire holder with a special structure, there is an effect of facilitating the skew adjustment in the radial and tracking directions of the objective lens. Also, according to the present invention, the objective lens skew adjustment is performed while the actuator is assembled to the provided pickup base according to the present invention, compared to the conventional case where the objective lens skew adjustment was performed by adjusting the assembled pick-up base and the actuator yoke of the actuator. Since this is done, there is an effect that the process is simplified and thus the labor cost is reduced.
도 1은 종래의 광 픽업의 개략도.1 is a schematic diagram of a conventional optical pickup.
도 2은 종래의 광 픽업의 분해사시도.2 is an exploded perspective view of a conventional optical pickup.
도 3은 본 발명에 따른 광픽업장치의 분해사시도.3 is an exploded perspective view of the optical pickup apparatus according to the present invention.
도 4는 본 발명에 따른 광 픽업장치의 결합사시도.4 is a combined perspective view of the optical pickup device according to the present invention.
도 5는 본 발명에 따른 광 픽업장치의 결합단면도.5 is a cross-sectional view of the optical pickup device according to the present invention.
도 6 및 도 7은 본 발명의 광 픽업장치의 스큐조정방법을 도시한 도면.6 and 7 show a skew adjusting method of the optical pickup apparatus of the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
20: 픽업베이스 21: 레이저 다이오드 22: 반사경20: pickup base 21: laser diode 22: reflector
23: 중심공 24: 요크블럭삽입공 24-1: 제1삽입공23: center hole 24: yoke block insertion hole 24-1: first insertion hole
24-2: 제2삽입공 25: 조정홈 26: 나사체결공24-2: 2nd insertion hole 25: adjusting groove 26: screw fastening
30: 요크블럭 30-1: 제1돌기 30-2: 제2돌기30: yoke block 30-1: first projection 30-2: second projection
40: 마그네트 51: 대물렌즈 52: 와이어 홀더40: magnet 51: objective 52: wire holder
52-1: 저면 52-2: 조정돌기 52-3: 전면52-1: Bottom 52-2: Adjustment protrusion 52-3: Front
52-4: 후면 52-5: 관통공 52-6: 발진방지공52-4: Rear surface 52-5: Through hole 52-6: Oscillation prevention hole
52-7,9: 나사공 52-8: 절곡부 52-7, 9: screw hole 52-8: bend
53: 서스펜션와이어 54: 피씨비 플레이트 55: 보빈53: suspension wire 54: PCB plate 55: bobbin
55-1: 포커싱 코일 55-2: 트래킹 코일 56: 코일 피씨비55-1: Focusing Coil 55-2: Tracking Coil 56: Coil PC
70: 스프링 D: 광 디스크 S: 스프링70: spring D: optical disk S: spring
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0053256A KR100494468B1 (en) | 2002-09-04 | 2002-09-04 | Optical pick-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0053256A KR100494468B1 (en) | 2002-09-04 | 2002-09-04 | Optical pick-up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20040021424A KR20040021424A (en) | 2004-03-10 |
| KR100494468B1 true KR100494468B1 (en) | 2005-06-10 |
Family
ID=37325622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2002-0053256A KR100494468B1 (en) | 2002-09-04 | 2002-09-04 | Optical pick-up |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100494468B1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61239438A (en) * | 1986-04-04 | 1986-10-24 | Hitachi Ltd | Objective lens driver |
| JPH05325218A (en) * | 1992-05-28 | 1993-12-10 | Matsushita Electric Ind Co Ltd | Objective lens driving device |
| JPH07302430A (en) * | 1994-04-29 | 1995-11-14 | Daewoo Electron Co Ltd | Optical pickup actuator of optical disk player |
| JPH08263862A (en) * | 1995-03-24 | 1996-10-11 | Matsushita Electric Ind Co Ltd | Actuator device for optical pickup |
| JPH10188308A (en) * | 1996-12-18 | 1998-07-21 | Mitsumi Electric Co Ltd | Optical head actuator |
| KR20000013729U (en) * | 1998-12-28 | 2000-07-15 | 전주범 | Skew adjustment structure of optical pickup device |
-
2002
- 2002-09-04 KR KR10-2002-0053256A patent/KR100494468B1/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61239438A (en) * | 1986-04-04 | 1986-10-24 | Hitachi Ltd | Objective lens driver |
| JPH05325218A (en) * | 1992-05-28 | 1993-12-10 | Matsushita Electric Ind Co Ltd | Objective lens driving device |
| JPH07302430A (en) * | 1994-04-29 | 1995-11-14 | Daewoo Electron Co Ltd | Optical pickup actuator of optical disk player |
| JPH08263862A (en) * | 1995-03-24 | 1996-10-11 | Matsushita Electric Ind Co Ltd | Actuator device for optical pickup |
| JPH10188308A (en) * | 1996-12-18 | 1998-07-21 | Mitsumi Electric Co Ltd | Optical head actuator |
| KR20000013729U (en) * | 1998-12-28 | 2000-07-15 | 전주범 | Skew adjustment structure of optical pickup device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040021424A (en) | 2004-03-10 |
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