JP2001060322A - Pickup-equipped device for recording or reproducing signal for disk, and its pickup - Google Patents
Pickup-equipped device for recording or reproducing signal for disk, and its pickupInfo
- Publication number
- JP2001060322A JP2001060322A JP11233762A JP23376299A JP2001060322A JP 2001060322 A JP2001060322 A JP 2001060322A JP 11233762 A JP11233762 A JP 11233762A JP 23376299 A JP23376299 A JP 23376299A JP 2001060322 A JP2001060322 A JP 2001060322A
- Authority
- JP
- Japan
- Prior art keywords
- pickup
- disk
- optical body
- objective lens
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ディスクにビーム
を発するピックアップの傾き調整機構を具えたディスク
への信号記録又は再生装置及び該ピックアップに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal recording / reproducing apparatus for recording / reproducing a signal on / from a disk provided with a tilt adjusting mechanism of a pickup which emits a beam to the disk, and to the pickup.
【０００２】[0002]
【従来の技術】図７は、従来のディスク記録又は再生装
置の平面図であり、図８は、図７をＡ方向から見た側面
図、図９は、図７をＢ方向から見た正面図である。シャ
ーシ(６)上に開設された開口(61)内にはディスクＤを回
転させるターンテーブル(60)が設けられている。開口(6
1)内にはディスクにビームを発するピックアップ(１)
が、ターンテーブル(60)に対し接近離間可能に設けられ
ている。ピックアップ(１)はシャーシ(６)上のモータ
(図示せず)により駆動される。ピックアップ(１)はディ
スク半径方向に延びたガイド軸(７)(７)に移動を案内さ
れ、各ガイド軸(７)は端部をブラケット(62)(62)に支持
されている。ピックアップ(１)は周知の如く、半導体レ
ーザ(40)からの光をディスクに向けて照射する対物レン
ズ(４)を昇降可能に具え、対物レンズ(４)を微少量だけ
昇降させてビームをディスク上に合焦させる。ディスク
からの反射光により、信号を読みとる。以下の記載で
は、ガイド軸(７)(７)に沿う方向をｒａｄ方向と呼び、
シャーシ(６)に平行な面内にてｒａｄ方向と直交する方
向をｔａｎ方向と呼ぶ。2. Description of the Related Art FIG. 7 is a plan view of a conventional disk recording / reproducing apparatus, FIG. 8 is a side view of FIG. 7 viewed from a direction A, and FIG. 9 is a front view of FIG. FIG. A turntable (60) for rotating the disk D is provided in an opening (61) opened on the chassis (6). Opening (6
Pickup that emits a beam to the disc (1)
However, it is provided so as to be able to approach and separate from the turntable (60). The pickup (1) is a motor on the chassis (6)
(Not shown). The pickup (1) is guided to move by guide shafts (7) (7) extending in the radial direction of the disk, and each guide shaft (7) is supported at one end by brackets (62) (62). As is well known, the pickup (1) includes an objective lens (4) for irradiating light from a semiconductor laser (40) toward a disk so as to be able to move up and down, and moves the objective lens (4) by a very small amount to move the beam to the disk. Focus on top. The signal is read by the reflected light from the disk. In the following description, the direction along the guide shafts (7) and (7) is called a rad direction,
A direction orthogonal to the rad direction in a plane parallel to the chassis (6) is called a tan direction.
【０００３】近年、ディスクの大容量化に伴って、ディ
スク上の信号の記録密度を高めることが要求されてい
る。そのため、ディスク上に合焦したビームのスポット
径を小さくして、記録密度の高い信号を再生せんとして
いる。図１３は、対物レンズ(４)とディスクＤの側面図
である。ビームのスポット径φはビームの波長をλとす
ると、 φ＝０．８２×(λ／ＮＡ) で示される。ここでＮＡとは対物レンズ(４)の開口率と
呼ばれる値であり、対物レンズ(４)に固有の値である。
一般には開口率の大きな、具体的には０．６の対物レン
ズ(４)を使用し、ビームの波長λを６５０ｎｍとしてい
る。６５０ｎｍの波長は、大量生産が可能な半導体レー
ザ(40)の中で最小に近い値であり、スポット径φを極力
小さくしている。In recent years, as the capacity of a disk has increased, it has been required to increase the recording density of signals on the disk. Therefore, the spot diameter of the focused beam on the disk is reduced to reproduce a signal having a high recording density. FIG. 13 is a side view of the objective lens (4) and the disk D. The beam spot diameter φ is represented by φ = 0.82 × (λ / NA), where λ is the beam wavelength. Here, NA is a value called an aperture ratio of the objective lens (4), and is a value unique to the objective lens (4).
Generally, an objective lens (4) having a large aperture ratio, specifically, 0.6, is used, and the wavelength λ of the beam is 650 nm. The wavelength of 650 nm is a value close to the minimum among the semiconductor lasers (40) that can be mass-produced, and makes the spot diameter φ as small as possible.
【０００４】ターンテーブル(60)の取付け誤差等によ
り、ディスクＤが水平位置から僅かに傾くことがある。
この場合、ディスクは記録密度が大きいから、信号が記
録されたピット(図示せず)の間隔が短く、ディスクＤが
傾くと、ビームは本来記録又は再生すべきでないピット
を照射する虞れがある。従って、図８及び図９に示すよ
うに、ブラケット(62)とシャーシ(６)との間にスペーサ
(63)を挟んで、ｒａｄ方向又はｔａｎ方向を含みシャー
シ(６)に垂直な面内にてガイド軸(７)をディスクに合わ
せて傾け、ディスクが傾いても信号の記録又は再生を可
能にしている。The disc D may be slightly inclined from the horizontal position due to an error in mounting the turntable (60).
In this case, since the disc has a high recording density, the interval between pits (not shown) in which signals are recorded is short, and if the disc D is tilted, the beam may irradiate pits that should not be recorded or reproduced. . Therefore, as shown in FIGS. 8 and 9, a spacer is provided between the bracket (62) and the chassis (6).
With the (63) sandwiched, the guide shaft (7) is tilted in accordance with the disk in a plane including the rad direction or the tan direction and perpendicular to the chassis (6) to enable signal recording or reproduction even when the disk is tilted. ing.
【０００５】[0005]
【発明が解決しようとする課題】図８に示すように、ガ
イド軸(７)がｒａｄ方向を含みシャーシ(６)に垂直な面
内にて傾いていると、ピックアップ(１)がディスク外周
側に移動すれば、対物レンズ(４)とディスクＤの間隔が
開きすぎ、ビームが正確に合焦しない虞れがある。ま
た、対物レンズ(４)とディスクＤの開きすぎを補正する
為に、対物レンズ(４)が上昇し過ぎると、後記の如く、
対物レンズ(４)がディスク面に対して傾き、信号が正確
に記録又は再生されない虞れがある。更には、シャーシ
(６)を裏返してスペーサ(63)を挟む必要があるから作業
性が悪い。本発明は、対物レンズを傾き調整しても、ビ
ームがディスクに正確に合焦できることを目的とする。As shown in FIG. 8, when the guide shaft (7) is inclined in a plane including the rad direction and perpendicular to the chassis (6), the pickup (1) moves toward the outer periphery of the disk. In this case, the distance between the objective lens (4) and the disk D is too large, and the beam may not be focused accurately. Also, if the objective lens (4) rises too much in order to correct the objective lens (4) and the disc D too open, as described below,
There is a possibility that the objective lens (4) is tilted with respect to the disk surface and the signal is not accurately recorded or reproduced. Furthermore, the chassis
The workability is poor because it is necessary to turn over (6) and sandwich the spacer (63). SUMMARY OF THE INVENTION It is an object of the present invention to enable a beam to be accurately focused on a disk even when the tilt of an objective lens is adjusted.
【０００６】[0006]
【課題を解決する為の手段】ピックアップ(１)は、対物
レンズ(４)を具えた光学ボディ(２)と、該光学ボディ
(２)を載せてガイド軸(７)に嵌まるフレーム(３)とから
構成される。光学ボディ(２)とフレーム(３)との間に
は、上方から操作される調整部材を具え、光学ボディ
(２)をディスクの信号面に対して傾ける調整機構(５)が
配備されている。A pickup (1) comprises: an optical body (2) having an objective lens (4);
And a frame (3) on which the (2) is placed and fitted on the guide shaft (7). An adjusting member operated from above between the optical body (2) and the frame (3);
An adjustment mechanism (5) for tilting (2) with respect to the signal surface of the disk is provided.
【０００７】[0007]
【作用及び効果】フレーム(３)はガイド軸(７)に嵌まっ
ており、対物レンズ(４)の傾き調整時には調整機構(５)
を操作して、光学ボディ(２)をフレーム(３)に対して傾
ける。フレーム(３)はディスクＤに対して傾かないか
ら、フレーム(３)がガイド軸(７)に沿って移動しても、
フレーム(３)及び光学ボディ(２)とディスクＤとの間隔
は変わらない。従って、対物レンズ(４)の傾き調整後
は、ピックアップ(１)がディスクのどの位置に対向して
もビームは正確に合焦できる。また、調整機構(５)は上
方から操作されるので、調整時にシャーシ(６)を裏返す
必要はなく、作業性がよい。[Operation and Effect] The frame (3) is fitted on the guide shaft (7), and the adjusting mechanism (5) is used when adjusting the tilt of the objective lens (4).
To tilt the optical body (2) with respect to the frame (3). Since the frame (3) does not tilt with respect to the disk D, even if the frame (3) moves along the guide shaft (7),
The distance between the frame 3 and the optical body 2 and the disk D does not change. Therefore, after the tilt of the objective lens (4) is adjusted, the beam can be accurately focused no matter where the pickup (1) faces the disk. Further, since the adjusting mechanism (5) is operated from above, there is no need to turn the chassis (6) upside down at the time of adjustment, and the workability is good.
【０００８】[0008]
【発明の実施の形態】以下、本発明の一例を図を用いて
詳述する。図１は、ピックアップ(１)の分解斜視図であ
り、図２はピックアップ(１)を図１のＣ方向から見た正
面断面図、図３はピックアップ(１)を図１のＤ方向から
見た側面断面図である。説明の便宜上、図１ではターン
テーブル(60)を省く。ピックアップ(１)は従来と同様
に、シャーシ(６)上のガイド軸(７)(７)に沿って移動す
る。ピックアップ(１)は対物レンズ(４)を具えた光学ボ
ディ(２)と、該光学ボディ(２)を支持するフレーム(３)
とから構成される。フレーム(３)はガイド軸(７)(７)に
嵌まって移動を案内され、対物レンズ(４)は昇降可能に
設けられるが、この構成の詳細は後記する。光学ボディ
(２)の両端部からは突板(20)(20)が外向きに張り出し、
一方の突板(20)には互いに離間した２つのrad調整ネジ
孔(21)(21)が、他方の突板(20)には１つのtan調整ネジ
孔(22)が開設されている。光学ボディ(２)はフレーム
(３)の開口(30)に嵌まり、フレーム(３)には開口(30)内
の光学ボディ(２)を上から押さえる板バネ(35)が取り付
けられる。該板バネ(35)により光学ボディ(２)は開口(3
0)からの不用意な脱出が防止される。２つのrad調整ネ
ジ孔(21)(21)はガイド軸(７)に平行な線上に設けられ、
tan調整ネジ孔(22)は両rad調整ネジ孔(21)(21)の中間及
び対物レンズ(４)の中心を通ってガイド軸(７)に直交
し、シャーシ(６)に平行な仮想線Ｌ上に設けられてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of the present invention will be described in detail with reference to the drawings. 1 is an exploded perspective view of the pickup (1), FIG. 2 is a front sectional view of the pickup (1) viewed from a direction C in FIG. 1, and FIG. 3 is a view of the pickup (1) viewed from a direction D in FIG. FIG. For convenience of explanation, the turntable (60) is omitted in FIG. The pickup (1) moves along the guide shafts (7) and (7) on the chassis (6) as in the prior art. The pickup (1) comprises an optical body (2) having an objective lens (4) and a frame (3) supporting the optical body (2).
It is composed of The frame (3) fits on the guide shafts (7) and (7) to guide its movement, and the objective lens (4) is provided so as to be able to move up and down. The details of this structure will be described later. Optical body
Veneers (20) and (20) project outward from both ends of (2),
The one protruding plate (20) has two rad adjusting screw holes (21) and (21) separated from each other, and the other protruding plate (20) has one tan adjusting screw hole (22). Optical body (2) is frame
A leaf spring (35) that fits into the opening (30) of (3) and presses the optical body (2) in the opening (30) from above is attached to the frame (3). The optical body (2) is opened (3) by the leaf spring (35).
Inadvertent escape from 0) is prevented. The two rad adjustment screw holes (21) and (21) are provided on a line parallel to the guide shaft (7),
The tan adjustment screw hole (22) is an imaginary line that is perpendicular to the guide shaft (7) through the middle of both rad adjustment screw holes (21) and (21) and the center of the objective lens (4) and parallel to the chassis (6). L.
【０００９】フレーム(３)の開口(30)内には、開口(30)
の周縁部から一段下がった段部(31)が設けられており、
各rad調整ネジ孔(21)にはｒａｄ調整ネジ(50)が、tan調
整ネジ孔(22)にはｔａｎ調整ネジ(52)が夫々螺合する。
ｒａｄ調整ネジ(50)及びｔａｎ調整ネジ(52)は中空のパ
イプ状で、下端が段部(31)の上面に接する。前記の如
く、信号が高密度記録されたディスクの記録又は再生装
置にあっては、対物レンズ(４)の傾き調整機構を設け、
ディスクが傾いても信号の記録又は再生を可能にしてい
る。本例にあっては、ｒａｄ調整ネジ(50)、ｔａｎ調整
ネジ(52)とフレーム(３)とによって傾き調整機構(５)を
構成する。ディスクの傾き調整には、ｒａｄ方向を含み
シャーシ(６)に垂直な面内にて対物レンズ(４)を傾ける
第１の調整と、ｔａｎ方向を含みシャーシ(６)に垂直な
面内にて対物レンズ(４)を傾ける第２の調整の２通りが
あるが、各調整手順を以下に示す。An opening (30) is provided in the opening (30) of the frame (3).
There is provided a step (31) that is one step lower from the periphery of
A rad adjustment screw (50) is screwed into each rad adjustment screw hole (21), and a tan adjustment screw (52) is screwed into the tan adjustment screw hole (22).
The rad adjustment screw (50) and the tan adjustment screw (52) have a hollow pipe shape, and the lower end is in contact with the upper surface of the step (31). As described above, in a recording or reproducing apparatus for a disk on which a signal is recorded at a high density, an inclination adjusting mechanism for the objective lens (4) is provided,
The signal can be recorded or reproduced even when the disc is tilted. In this example, the tilt adjustment mechanism (5) is composed of the rad adjustment screw (50), the tan adjustment screw (52), and the frame (3). For the tilt adjustment of the disc, a first adjustment of tilting the objective lens (4) in a plane including the rad direction and perpendicular to the chassis (6) and in a plane including the tan direction and perpendicular to the chassis (6) are included. There are two types of second adjustment for tilting the objective lens (4), and each adjustment procedure is described below.
【００１０】第１の調整 図３に示すように、一方のｒａｄ調整ネジ(50)に治具
(図示せず)を上方から挿入し、該ｒａｄ調整ネジ(50)を
回転させると、光学ボディ(２)は他方のｒａｄ調整ネジ
(50)を支点としてｒａｄ方向を含みシャーシ(６)に垂直
な面内にて傾動する。フレーム(３)はガイド軸(７)に嵌
まったままであり、対物レンズ(４)を有する光学ボディ
(２)のみが回動する。第２の調整 図２に示すように、ｔａｎ調整ネジ(52)に治具(図示せ
ず)を上方から挿入し、該ｔａｎ調整ネジ(52)を回転さ
せると、光学ボディ(２)はｒａｄ調整ネジ(50)を支点と
して、tan方向を含みシャーシ(６)に垂直な面内にて傾
動する。図６は、光学ボディ(２)の平面図であるが、前
記の如く、ｔａｎ調整ネジ(52)はｒａｄ調整ネジ(50)(5
0)の中間を通る仮想線Ｌ上に設けられている。従って、
ｔａｎ調整ネジ(52)から各ｒａｄ調整ネジ(50)までの距
離は等しく、ｔａｎ調整ネジ(52)を回転させると、光学
ボディ(２)は両ｒａｄ調整ネジ(50)(50)を支点として回
動する。仮に、ｔａｎ調整ネジ(52)が図６に点線で示す
ように、仮想線Ｌからずれた位置に設けられているとす
る。ｔａｎ調整ネジ(52)から各ｒａｄ調整ネジ(50)まで
の距離は異なるから、光学ボディ(２)はｔａｎ調整ネジ
(52)の最寄りのｒａｄ調整ネジ(50)を支点として回動す
る。従って、ｔａｎ調整ネジ(52)を回動させれば、光学
ボディ(２)はtan方向のみならずｒａｄ方向を含みシャ
ーシに垂直な面内に於いても僅かに回動する。故に、再
度第１の調整が必要になる。この虞れを防ぐために、ｔ
ａｎ調整ネジ(52)を仮想線Ｌ上に設けている。第１及び
第２の調整後は、基準信号が予め記録されたディスクを
再生し、該再生信号の位相及び波形を確認しながら、基
準信号が正確に再生されているかを確認する。これによ
り、対物レンズ(４)が正しく傾き調整されたか否かが確
認できる。 First adjustment As shown in FIG. 3, a jig is attached to one rad adjustment screw (50).
(Not shown) is inserted from above and the rad adjustment screw (50) is rotated, and the optical body (2) is connected to the other rad adjustment screw.
With (50) as a fulcrum, it tilts in a plane including the rad direction and perpendicular to the chassis (6). The optical body with the objective (4) and the frame (3) still fitted on the guide shaft (7)
Only (2) rotates. Second Adjustment As shown in FIG. 2, when a jig (not shown) is inserted into the tan adjustment screw (52) from above and the tan adjustment screw (52) is rotated, the optical body (2) becomes rad. With the adjusting screw (50) as a fulcrum, the tilting is performed in a plane including the tan direction and perpendicular to the chassis (6). FIG. 6 is a plan view of the optical body (2). As described above, the tan adjustment screw (52) is replaced with the rad adjustment screw (50) (5).
0) is provided on a virtual line L passing through the middle. Therefore,
The distance from the tan adjustment screw (52) to each rad adjustment screw (50) is equal, and when the tan adjustment screw (52) is rotated, the optical body (2) uses the two rad adjustment screws (50) and (50) as fulcrums. Rotate. It is assumed that the tan adjusting screw (52) is provided at a position deviated from the virtual line L as shown by a dotted line in FIG. Since the distance from the tan adjusting screw (52) to each rad adjusting screw (50) is different, the optical body (2) is tan adjusting screw.
The rad adjustment screw (50) closest to (52) is rotated about a fulcrum. Therefore, when the tan adjusting screw (52) is rotated, the optical body (2) slightly rotates not only in the tan direction but also in the plane perpendicular to the chassis including the rad direction. Therefore, the first adjustment is required again. To prevent this possibility, t
An adjustment screw (52) is provided on the virtual line L. After the first and second adjustments, it is checked whether or not the reference signal is correctly reproduced while reproducing the disk on which the reference signal is recorded in advance and checking the phase and waveform of the reproduced signal. Thereby, it can be confirmed whether or not the tilt of the objective lens (4) has been correctly adjusted.
【００１１】尚、図４に示すようにｔａｎ調整ネジ(52)
に代えて、光学ボディ(２)から突出した突起(23)をフレ
ーム(３)に当接させてもよい。この場合、第２の調整
は、両ｒａｄ調整ネジ(50)(50)を同じ角度だけ回転させ
ればよい。また、ｔａｎ調整ネジ(52)は中空のネジとし
たが、図５に示すように、鍔付きネジ(９)を光学ボディ
(２)を貫通してフレーム(３)に螺合させ、光学ボディ
(２)とフレーム(３)の間に圧縮バネ(90)を挿入してもよ
い。この場合、光学ボディ(２)を押さえている板バネ(3
5)は不要になる。As shown in FIG. 4, the tan adjusting screw (52)
Alternatively, the projection (23) projecting from the optical body (2) may be brought into contact with the frame (3). In this case, in the second adjustment, both rad adjustment screws (50) and (50) may be rotated by the same angle. Although the tan adjustment screw (52) is a hollow screw, as shown in FIG.
(2) is passed through and screwed into the frame (3), and the optical body
A compression spring (90) may be inserted between (2) and the frame (3). In this case, the leaf spring (3) holding the optical body (2)
5) becomes unnecessary.
【００１２】従来にあっては、ガイド軸(７)を傾けて対
物レンズ(４)の傾き調整をしていたが、本例にあっては
光学ボディ(２)のみを傾けるから、ピックアップ(１)が
ディスク上のどの位置に対向しているかに拘わらず、対
物レンズ(４)とディスクの距離は一定になる。対物レン
ズ(４)からのビームはディスク上に正確に合焦できる。
対物レンズ(４)は昇降可能に設けられているから、対物
レンズ(４)を昇降させてディスクとの間隔を一定に保て
ば、従来の傾き調整機構でも構わないとも考えられる。
然るに、対物レンズ(４)が上昇又は下降し過ぎると、対
物レンズ(４)がディスク面に対して傾き、信号が正確に
記録又は再生されない虞れがある。この詳細を以下に示
す。In the prior art, the tilt of the objective lens (4) was adjusted by tilting the guide shaft (7). However, in this embodiment, only the optical body (2) is tilted. ), The distance between the objective lens (4) and the disk is constant, regardless of which position on the disk is facing. The beam from the objective lens (4) can be precisely focused on the disc.
Since the objective lens (4) is provided so as to be able to move up and down, if the objective lens (4) is moved up and down to keep a constant distance from the disk, a conventional tilt adjusting mechanism may be used.
However, if the objective lens (4) is raised or lowered too much, the objective lens (4) may be tilted with respect to the disk surface, and a signal may not be recorded or reproduced accurately. The details are shown below.
【００１３】図１０は、対物レンズ(４)を昇降させる構
成を示す斜視図である。この構成は、従来のピックアッ
プ(１)にも用いられている。半導体レーザ(40)の光はミ
ラー(41)により上向きに反射されて、対物レンズ(４)に
入射される。対物レンズ(４)とミラー(41)との間には、
支持基台(42)が設けられ、ミラー(41)に反射された光は
支持基台(42)の透窓(43)を通過する。対物レンズ(４)は
ホルダ(44)の一端に取り付けられ、該ホルダ(44)は一端
部が支持基台(42)に取り付けられたワイヤ(45)(45)にて
片持ち支持されている。ホルダ(44)内の透孔(46)には、
上下に開口したコイル(47)が嵌められ、支持基台(42)上
には磁性片(75)が設けられている。図１１に示すよう
に、磁性片(75)は磁極(76)(76)を対向させて設け、一方
の磁極(76)がコイル(47)内に、他方の磁極(76)がホルダ
(44)の外側に位置する。コイル(47)に通電すると、フレ
ミング左手の法則により、コイル(47)及びホルダ(44)が
昇降する。ホルダ(44)はワイヤ(45)(45)にて片持ち支持
されているから、図１２(a)に示す状態からホルダ(44)
が上昇すると、図１２(b)に示すように、ホルダ(44)及
び対物レンズ(４)は傾いて上昇する。従って、対物レン
ズ(４)が上昇又は下降し過ぎると、対物レンズ(４)がデ
ィスク面に対して傾き、信号が正確に記録又は再生され
ない虞れがある。ところが、本例の傾き調整機構は、対
物レンズ(４)を必要以上に昇降させる必要がなく、有益
である。FIG. 10 is a perspective view showing a structure for raising and lowering the objective lens (4). This configuration is also used for the conventional pickup (1). The light of the semiconductor laser (40) is reflected upward by the mirror (41) and enters the objective lens (4). Between the objective lens (4) and the mirror (41),
A support base (42) is provided, and the light reflected by the mirror (41) passes through the transparent window (43) of the support base (42). The objective lens (4) is attached to one end of a holder (44), and the holder (44) is cantilevered at one end by wires (45) and (45) attached to a support base (42). . In the through hole (46) in the holder (44),
A vertically open coil (47) is fitted therein, and a magnetic piece (75) is provided on the support base (42). As shown in FIG. 11, the magnetic piece (75) is provided with the magnetic poles (76) and (76) facing each other, one of the magnetic poles (76) is in the coil (47), and the other is in the holder.
Located outside (44). When the coil (47) is energized, the coil (47) and the holder (44) move up and down according to Fleming's left hand rule. Since the holder (44) is cantilevered by the wires (45) and (45), the holder (44) is moved from the state shown in FIG.
As shown in FIG. 12 (b), the holder (44) and the objective lens (4) tilt and rise. Therefore, if the objective lens (4) rises or descends too much, the objective lens (4) may be tilted with respect to the disk surface, and a signal may not be recorded or reproduced accurately. However, the tilt adjusting mechanism of this example is useful because it is not necessary to raise and lower the objective lens 4 more than necessary.
【００１４】上記実施例の説明は、本発明を説明するた
めのものであって、特許請求の範囲に記載の発明を限定
し、或は範囲を減縮する様に解すべきではない。又、本
発明の各部構成は上記実施例に限らず、特許請求の範囲
に記載の技術的範囲内で種々の変形が可能であることは
勿論である。The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the appended claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.
【図１】ピックアップの分解斜視図である。FIG. 1 is an exploded perspective view of a pickup.
【図２】ピックアップを図１のＣ方向から見た正面断面
図である。FIG. 2 is a front sectional view of the pickup as viewed from a direction C in FIG. 1;
【図３】ピックアップを図１のＤ方向から見た側面断面
図である。FIG. 3 is a side sectional view of the pickup as viewed from a direction D in FIG. 1;
【図４】他のピックアップの正面断面図である。FIG. 4 is a front sectional view of another pickup.
【図５】他のピックアップの要部断面図である。FIG. 5 is a sectional view of a main part of another pickup.
【図６】光学ボディの平面図である。FIG. 6 is a plan view of the optical body.
【図７】従来のディスク記録又は再生装置の平面図であ
る。FIG. 7 is a plan view of a conventional disk recording or reproducing apparatus.
【図８】図７をＡ方向から見た側面図である。FIG. 8 is a side view of FIG. 7 viewed from the direction A.
【図９】図７をＢ方向から見た正面図である。FIG. 9 is a front view of FIG. 7 viewed from a direction B.
【図１０】対物レンズを昇降させる構成を示す斜視図で
ある。FIG. 10 is a perspective view showing a configuration for raising and lowering an objective lens.
【図１１】コイルと磁性片の拡大斜視図である。FIG. 11 is an enlarged perspective view of a coil and a magnetic piece.
【図１２】(a)、(b)は支持基台の側面図であり、(a)は
対物レンズの待機位置を、(b)は対物レンズの上昇位置
を夫々示す。12A and 12B are side views of the support base, where FIG. 12A shows a standby position of the objective lens, and FIG. 12B shows a raised position of the objective lens.
【図１３】対物レンズとディスクの側面図である。FIG. 13 is a side view of the objective lens and the disk.
(１) ピックアップ (２) 光学ボディ (３) フレーム (４) 対物レンズ (５) 調整機構 (７) ガイド軸 (23) 突起 (50) ｒａｄ調整ネジ (52) ｔａｎ調整ネジ (1) Pickup (2) Optical body (3) Frame (4) Objective lens (5) Adjustment mechanism (7) Guide shaft (23) Projection (50) rad adjustment screw (52) tan adjustment screw
Claims (3)
(４)を具えたピックアップ(１)を、シャーシ(６)上のタ
ーンテーブル(60)に接近離間可能に配備し、ピックアッ
プ(１)はディスク半径方向に延びたガイド軸(７)に移動
を案内されるディスクへの信号記録又は再生装置に於い
て、 ピックアップ(１)は対物レンズ(４)を具えた光学ボディ
(２)と、該光学ボディ(２)を支持してガイド軸(７)に嵌
まるフレーム(３)とから構成され、 光学ボディ(２)とフレーム(３)との間には、上方から操
作される調整部材を具え、光学ボディ(２)をディスクの
信号面に対して傾ける調整機構(５)が配備されたことを
特徴とするディスクへの信号記録又は再生装置。1. An objective lens for emitting a beam to a disk
A pickup (1) provided with (4) is provided so as to be able to approach and separate from a turntable (60) on a chassis (6), and the pickup (1) moves on a guide shaft (7) extending in a disk radial direction. In a signal recording or reproducing apparatus for a guided disk, the pickup (1) is an optical body having an objective lens (4).
(2) and a frame (3) that supports the optical body (2) and fits on the guide shaft (7). The space between the optical body (2) and the frame (3) is from above. A signal recording / reproducing apparatus for recording / reproducing a signal on / from a disc, comprising an adjusting member to be operated and an adjusting mechanism (5) for inclining the optical body (2) with respect to the signal surface of the disc.
して先端がフレーム(３)に当接した２本のｒａｄ調整ネ
ジ(50)(50)と、先端がフレーム(３)に当接した１本のｔ
ａｎ調整ネジ(52)又は突起(23)から構成され、 ２本のｒａｄ調整ネジ(50)(50)は互いに離間してガイド
軸(７)に平行な線上に配備され、他のｔａｎ調整ネジ(5
2)又は突起(23)は、両ｒａｄ調整ネジ(50)(50)の中間を
通ってガイド軸(７)に直交し、シャーシ(６)に平行な仮
想線Ｌ上に配備されている請求項１に記載のディスクへ
の信号記録又は再生装置。2. An adjusting mechanism (5) comprising two rad adjusting screws (50) (50) screwed to the optical body (2) and having a tip abutting on the frame (3); One t in contact with 3)
An ang adjustment screw (52) or a projection (23), and two rad adjustment screws (50) and (50) are arranged on a line separated from each other and parallel to the guide shaft (7). (Five
2) or the projection (23) is disposed on an imaginary line L that is perpendicular to the guide shaft (7) through the middle of the two rad adjustment screws (50) (50) and parallel to the chassis (6). Item 2. A device for recording or reproducing signals on a disk according to Item 1.
(４)を具えたピックアップに於いて、 対物レンズ(４)を具えた光学ボディ(２)と、該光学ボデ
ィ(２)を支持してガイド軸(７)に嵌まるフレーム(３)と
から構成され、 光学ボディ(２)とフレーム(３)との間には、上方から操
作される調整部材を具え、光学ボディ(２)をディスクの
信号面に対して傾ける調整機構(５)が配備されたことを
特徴とするピックアップ。3. An objective lens for emitting a beam to a disk
In a pickup having (4), an optical body (2) having an objective lens (4) and a frame (3) which supports the optical body (2) and fits on a guide shaft (7). An adjusting mechanism (5) is provided between the optical body (2) and the frame (3), the adjusting mechanism being provided with an adjusting member operated from above, and tilting the optical body (2) with respect to the signal surface of the disc. Pickup characterized by being done.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11233762A JP2001060322A (en) | 1999-08-20 | 1999-08-20 | Pickup-equipped device for recording or reproducing signal for disk, and its pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11233762A JP2001060322A (en) | 1999-08-20 | 1999-08-20 | Pickup-equipped device for recording or reproducing signal for disk, and its pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001060322A true JP2001060322A (en) | 2001-03-06 |
Family
ID=16960186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11233762A Pending JP2001060322A (en) | 1999-08-20 | 1999-08-20 | Pickup-equipped device for recording or reproducing signal for disk, and its pickup |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001060322A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030063646A (en) * | 2002-01-23 | 2003-07-31 | 삼성전기주식회사 | Optical pick-up actuator for object lens of inclination setting |
-
1999
- 1999-08-20 JP JP11233762A patent/JP2001060322A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030063646A (en) * | 2002-01-23 | 2003-07-31 | 삼성전기주식회사 | Optical pick-up actuator for object lens of inclination setting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100612014B1 (en) | Optical pickup and apparatus and method for assembling lenses | |
| US6295255B1 (en) | Optical pickup having a tilt mechanism to adjust an optical axis of an incident light beam | |
| JP3668097B2 (en) | Disc recording or reproducing apparatus having a pickup tilt adjusting mechanism | |
| JPH10112122A (en) | Tilt adjustable disk player | |
| US6175544B1 (en) | Disc recording and/or reproducing apparatus | |
| JP2003123288A (en) | Device for supporting objective lens | |
| JP2001060322A (en) | Pickup-equipped device for recording or reproducing signal for disk, and its pickup | |
| JP2005050398A (en) | Disk recording or reproducing device equipped with pickup tilt adjusting mechanism | |
| JP2911587B2 (en) | Method and apparatus for reading both sides of an optical storage disk simultaneously | |
| KR100322572B1 (en) | Optical pick-up apparatus | |
| JP2001052345A (en) | Disk recording or reproducing device with pickup tilt adjusting mechanism | |
| JP3099868B2 (en) | Optical pickup device | |
| JP3991935B2 (en) | Optical pickup and optical disc apparatus | |
| KR100319857B1 (en) | Optical pickup device | |
| JP2001344767A (en) | Disk recording or reproducing device provided with pickup inclination adjusting mechanism | |
| JP2004355711A (en) | Disk recording or playback device having pickup tilt adjusting mechanism | |
| KR100297773B1 (en) | Tilt adjuster of objective lens | |
| JPH11110760A (en) | Skew adjustment method for optical pickup device | |
| JP2001101672A (en) | Optical disk device | |
| JP2004355710A (en) | Disk recording or playback device having pickup tilt adjusting mechanism | |
| JPH11110777A (en) | Optical pickup device | |
| JP2007164829A (en) | Optical pickup device | |
| JP3328621B2 (en) | Optical pickup device | |
| JP2000242948A (en) | Optical pickup | |
| JP3442756B2 (en) | Optical disk drive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040127 |