KR0131563Y1 - Optical pick-up assembly - Google Patents
Optical pick-up assembly Download PDFInfo
- Publication number
- KR0131563Y1 KR0131563Y1 KR2019950024583U KR19950024583U KR0131563Y1 KR 0131563 Y1 KR0131563 Y1 KR 0131563Y1 KR 2019950024583 U KR2019950024583 U KR 2019950024583U KR 19950024583 U KR19950024583 U KR 19950024583U KR 0131563 Y1 KR0131563 Y1 KR 0131563Y1
- Authority
- KR
- South Korea
- Prior art keywords
- holder
- objective lens
- base
- optical pickup
- cover
- Prior art date
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—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
-
- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
조립부품수가 절감된 광 픽업 구조체에 대해 개시한다. 이 광 픽업 구조체는 요크부가 형성된 베이스(50)에 연장하여 대물렌즈를 보호하는 커버부(54)가 일체로 형성된 구조를 가진다.An optical pickup structure in which the number of assembly parts is reduced is disclosed. The optical pickup structure has a structure in which a cover portion 54 which extends to the base 50 where the yoke portion is formed and protects the objective lens is integrally formed.
Description
제1도는 종래 광 픽업 구조체를 나타낸 사시도.1 is a perspective view showing a conventional optical pickup structure.
제2도는 본 고안에 따른 광 픽업 구조체를 나타낸 사시도.2 is a perspective view showing an optical pickup structure according to the present invention.
제3도는 제2도의 베이스를 발췌하여 나타낸 단면도이다.3 is a cross-sectional view taken from the base of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
40 : 홀더 41 : 대물렌즈40: holder 41: objective lens
50 : 베이스 51a, 51b : 외부요크부50: base 51a, 51b: outer yoke part
52a, 52b : 내부요크부 54 : 커버부52a, 52b: inner yoke portion 54: cover portion
본 고안은 광 픽업 구조체에 관한 것으로서, 특히 요크부가 형성된 베이스로부터 대물렌즈를 보호하는 커버부를 연장하여 형성함으로써 조립부품수가 절감된 간단한 구조의 광 픽업 구조체에 관한 것이다.The present invention relates to an optical pickup structure, and more particularly, to an optical pickup structure having a simple structure in which the number of assembly parts is reduced by extending the cover part to protect the objective lens from the base on which the yoke is formed.
일반적으로 광 픽업 구조체는 제1도에 도시된 바와 같이, 대물렌즈(11)가 탑재되는 홀더(10)와, 이 홀더(10)를 수평, 수직방향으로 미세 이동가능하게 지지하는 탄성지지수단을 포함한다.In general, as shown in FIG. 1, the optical pickup structure includes a holder 10 on which the objective lens 11 is mounted, and an elastic support means for supporting the holder 10 so as to be movable in a horizontal and vertical direction. Include.
상기 탄성지지수단은 베이스(20)의 일측에 고정설치되는 고정블럭(28)과, 상기 고정블럭(28)에 상기 홀더(10)을 지지하는 복수의 탄성와이어부재(12)를 구비한다. 그리고 홀더(10)의 외주면에는 포커싱코일(25)이 감겨지고, 홀더(10)의 양측에는 각각 트래킹코일(26)이 부착된다. 또한, 홀더(10)의 양측부에는 각각 상기 베이스(20)로부터 절곡되어 연장형성된 외부요크(21a)(21b)와 내부요크(22a)(22b)가 마련되어 있으며, 각 외부요크(21a)(21b)의 일측면에는 영구자석(27a)(27b)이 부착되어 있다.The elastic support means includes a fixed block 28 fixed to one side of the base 20 and a plurality of elastic wire members 12 supporting the holder 10 on the fixed block 28. The focusing coil 25 is wound around the outer circumferential surface of the holder 10, and the tracking coils 26 are attached to both sides of the holder 10, respectively. In addition, both sides of the holder 10 are provided with outer yokes 21a and 21b and inner yokes 22a and 22b which are bent and extended from the base 20, respectively, and each outer yoke 21a and 21b. Permanent magnets (27a, 27b) is attached to one side of.
따라서 상기 각 코일(25)(26)에는 포커싱 및 트래킹 에러신호 검출전류가 인가되어서 요크(21a, 21b)(22a, 22b) 및 영구자석(27a)(27b)와 함께 자기회로를 형성함으로써, 대물렌즈(11)가 탑재된 홀더(10)를 디스크(미도시)의 트랙킹방향 및 포커싱방향으로 미세 조정할 수 있게 되어 있다.Therefore, a focusing and tracking error signal detection current is applied to each of the coils 25 and 26 to form a magnetic circuit together with the yoke 21a, 21b, 22a, 22b and the permanent magnets 27a, 27b. The holder 10 on which the lens 11 is mounted can be finely adjusted in the tracking direction and focusing direction of a disc (not shown).
한편, 상기와 같은 광 픽업 구조체는 대물렌즈(11)의 보호 및 내부오염을 방지하기 위하여 커버부재(30)가 결합되어 진다. 이 커버부재(30)에는 복수의 록커(31)(32)가 연장형성되어 있으며, 상기 베이스(20)에는 상기 록커(31)(32)가 록킹되기 위한 복수의 록킹홈(23)(24)이 형성되어 있다.On the other hand, the cover member 30 is coupled to the optical pickup structure as described above in order to protect the objective lens 11 and prevent internal contamination. The cover member 30 is formed with a plurality of lockers 31, 32, and the base 20 has a plurality of locking grooves 23, 24 for locking the lockers 31, 32. Is formed.
그런데, 상기와 같은 광 픽업 구조체는 커버부재(30)가 별도의 부품으로서 조립됨으로써 부품수가 증가하여 조립공수가 증가할 뿐만 아니라, 원가상승등의 문제점이 있다.However, in the optical pickup structure as described above, the cover member 30 is assembled as a separate component, thereby increasing the number of parts and increasing the number of assembly operations, and there is a problem such as cost increase.
본 고안은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 간단한 구조로 조립공수가 절감되고 원가가 절감될 수 있는 광 픽업 구조체를 제공하는 데 그 목적이 있는 것이다.The present invention has been made to solve the above problems, it is an object of the present invention to provide an optical pickup structure that can be reduced assembly cost and cost in a simple structure.
상기 목적을 달성하는 본 고안은 대물렌즈가 탑재되는 홀더와, 상기 홀더를 이동가능하게 지지하는 탄성지지수단과, 상기 홀더의 외주면에 설치되는 트래킹코일 및 포커싱코일과, 상기 각 코일의 일부가 자계내에 놓이도록 자기회로를 형성하는 영구자석 및 내외측 요크부가 형성된 베이스와, 상기 대물렌즈를 보호하도록 상기 홀더를 커버하는 커버수단을 포함하는 광 픽업 구조체에 있어서, 상기 커버수단은 상기 베이스에 상기 홀더 상부로 절곡된 커버부를 일체로 형성하여 된 것을 특징으로 한다.The present invention to achieve the above object is a holder on which the objective lens is mounted, an elastic support means for supporting the holder movably, a tracking coil and a focusing coil installed on the outer peripheral surface of the holder, and a part of each coil is a magnetic field An optical pick-up structure comprising a base having a permanent magnet forming a magnetic circuit to be placed therein and an inner and outer yoke portion, and cover means for covering the holder to protect the objective lens, wherein the cover means is attached to the holder. It is characterized in that the cover portion bent upwardly formed integrally.
여기서 상기 커버부와 베이스의 저면부에는 광빔이 통과할 수 있는 광통과공이 형성되어 있다.Here, a light passing hole through which a light beam can pass is formed at the bottom of the cover part and the base.
상기 본 고안의 특징에 따르면, 본 고안의 광 픽업 구조체는 대물렌즈를 보호하는 커버부가 요크부가 형성된 베이스로부터 일체로 형성됨으로써 조립부품수가 절감되는 이점을 가진다.According to the above feature of the present invention, the optical pickup structure of the present invention has the advantage that the number of assembly parts is reduced by integrally formed from the base in which the cover portion for protecting the objective lens is formed.
이하 첨부된 도면을 참조하면서 본 고안에 따른 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 고안에 따른 광 픽업 구조체를 나타낸 제2도를 참조하면, 대물렌즈(41)가 홀더(40)에 탑재되어 있고, 이 홀더(10)는 수평, 수직방향으로 미세 이동가능하도록 탄성지지수단에 의해서 지지되어 있다. 그리고 상기 대물렌즈(41)의 보호 및 내부의 오염을 방지하기 위한 커버수단이 마련되어 있다.Referring to FIG. 2 showing an optical pickup structure according to the present invention, an objective lens 41 is mounted on a holder 40, and the holder 10 is attached to an elastic support means to enable fine movement in the horizontal and vertical directions. Supported by And a cover means for protecting the objective lens 41 and preventing contamination therein is provided.
상기 탄성지지수단은 베이스(50)의 일측에 고정설치되는 고정블럭(60)과, 상기 고정블럭(60)에 상기 홀더(40)을 지지하는 복수의 탄성와이어부재(61)를 구비한다. 그리고 홀더(40)의 외부면에는 포커싱코일(55)이 감겨지고, 홀더(40)의 양측에는 각각 트래킹코일(56)이 부착된다. 또한, 홀더(40)의 양측부에는 각각 상기 베이스(50)로부터 절곡되어 연장형성된 외부요크(51a)(51b)와 내부요크(52a)(52b)가 마련되어 있으며, 각 외부요크(51a)(51b)의 일측면에는 상기 코일(55)(56)의 일부가 자계내에 놓이도록 영구자석(53a)(53b)이 부착되어 있다.The elastic support means includes a fixed block 60 fixed to one side of the base 50 and a plurality of elastic wire members 61 supporting the holder 40 on the fixed block 60. The focusing coil 55 is wound around the outer surface of the holder 40, and the tracking coil 56 is attached to both sides of the holder 40. In addition, both side portions of the holder 40 are provided with outer yokes 51a and 51b and inner yokes 52a and 52b which are bent and extended from the base 50, respectively, and each outer yoke 51a and 51b. The permanent magnets 53a and 53b are attached to one side of the coil so that a part of the coils 55 and 56 are placed in the magnetic field.
따라서 상기 각 코일(55)(56)에는 포커싱 및 트래킹 에러신호 검출전류가 인가되어서 요크(51a, 51b)(52a, 52b) 및 영구자석(53a)(53b)와 함께 자기회로를 형성함으로써, 대물렌즈(41)가 탑재된 홀더(40)를 디스크(미도시)의 트랙킹방향 및 포커싱방향으로 미세 조정할 수 있게 되어 있다.Therefore, a focusing and tracking error signal detection current is applied to each of the coils 55 and 56 to form a magnetic circuit together with the yoke 51a, 51b, 52a, 52b and the permanent magnets 53a, 53b. The holder 40 on which the lens 41 is mounted can be finely adjusted in the tracking direction and focusing direction of a disc (not shown).
한편, 본 고안의 특징적 구성으로서, 제2도 및 제3도를 참조하면, 상기 커버수단은 상기 베이스(50)에 상기 홀더(40) 상부로 절곡된 커버부(54)를 일체로 형성하여 된 구조를 가진다. 상기 커버부(54)에는 베이스(50)의 저면부에 형성된 광통과공(57)과 대향된 광통과공(54a)이 형성되어 있다.On the other hand, as a characteristic configuration of the present invention, referring to Figures 2 and 3, the cover means is formed integrally with the cover portion 54 bent to the holder 40 in the base 50 It has a structure. The cover 54 is formed with a light passing hole 54a facing the light passing hole 57 formed at the bottom of the base 50.
상기와 같은 구성의 본 고안에 따른 광 픽업 구조체는 대물렌즈(41)의 보호 및 내부오염을 방지하기 위하여 커버부(54)가 요크부가 형성된 베이스(50)로부터 일체로 형성됨으로써, 종래 별도의 커버부재를 구비하였던 것과는 달리, 조립부품수를 절감하는 이점을 가진다.In the optical pickup structure according to the present invention having the above configuration, the cover part 54 is integrally formed from the base 50 in which the yoke part is formed in order to protect the objective lens 41 and prevent internal contamination. Unlike having the member, it has the advantage of reducing the number of assembly parts.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950024583U KR0131563Y1 (en) | 1995-09-13 | 1995-09-13 | Optical pick-up assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950024583U KR0131563Y1 (en) | 1995-09-13 | 1995-09-13 | Optical pick-up assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970014985U KR970014985U (en) | 1997-04-28 |
| KR0131563Y1 true KR0131563Y1 (en) | 1998-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019950024583U KR0131563Y1 (en) | 1995-09-13 | 1995-09-13 | Optical pick-up assembly |
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| Country | Link |
|---|---|
| KR (1) | KR0131563Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100417336B1 (en) * | 2001-12-28 | 2004-02-05 | 삼성전기주식회사 | Lens protection cover for optical pick-up actuator |
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1995
- 1995-09-13 KR KR2019950024583U patent/KR0131563Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR970014985U (en) | 1997-04-28 |
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