JPH05323178A - Supporting structure for parallel plate type optical part - Google Patents
Supporting structure for parallel plate type optical partInfo
- Publication number
- JPH05323178A JPH05323178A JP4154241A JP15424192A JPH05323178A JP H05323178 A JPH05323178 A JP H05323178A JP 4154241 A JP4154241 A JP 4154241A JP 15424192 A JP15424192 A JP 15424192A JP H05323178 A JPH05323178 A JP H05323178A
- Authority
- JP
- Japan
- Prior art keywords
- beam splitter
- parallel plate
- optical component
- plate type
- base member
- 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.)
- Granted
Links
Landscapes
- Optical Head (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は新規な平行平板型光学部
品の支持構造に関する。詳しくは、光学ピックアップ装
置などに用いられる平行平板型光学部品の支持構造に関
し、ベース部材に取り付けた平行平板型光学部品に歪が
生ずることが無く、光学部品としての高精度化を図るこ
とができる新規な平行平板型光学部品の支持構造を提供
しようとするものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel support structure for parallel plate type optical components. More specifically, regarding a support structure for a parallel plate type optical component used in an optical pickup device or the like, distortion does not occur in the parallel plate type optical component attached to a base member, and high precision as an optical component can be achieved. An object of the present invention is to provide a novel support structure for a parallel plate type optical component.
【0002】[0002]
【従来の技術】図4及び図5は従来の平行平板型光学部
品の支持構造を光学ピックアップ装置のビームスプリッ
タのベース部材への支持構造に適用した一例を示す。2. Description of the Related Art FIGS. 4 and 5 show an example in which a conventional supporting structure for a parallel plate type optical component is applied to a supporting structure for a base member of a beam splitter of an optical pickup device.
【0003】aは上下方向に貫通された縦孔bと該縦孔
bの中間部から一側面に達する横孔cが形成されたベー
ス部材である。Reference numeral a designates a base member having a vertical hole b penetrating in the vertical direction and a horizontal hole c extending from an intermediate portion of the vertical hole b to one side surface.
【0004】dはベース部材aの縦孔bと横孔cとが交
差する部位にこれら孔b、cの軸心に対して45度の角
度で傾斜するように配設されたビームスプリッタであ
る。Reference numeral d designates a beam splitter which is arranged at a portion where the vertical hole b and the horizontal hole c of the base member a intersect so as to be inclined at an angle of 45 degrees with respect to the axis of these holes b and c. ..
【0005】e、eはビームスプリッタdの両端部を各
別に支持するためにベース部材aに形成された凹部であ
り、該凹部e、eのうち一方eがベース部材aの縦孔c
と横孔dとが交差する部位の左下角部に、また、他方e
が上記交差する部位の右上部に互いの開口が対向するよ
うに形成されている。Reference numerals e and e denote recesses formed in the base member a for separately supporting both ends of the beam splitter d. One of the recesses e and e is a vertical hole c in the base member a.
At the lower left corner of the intersection of the horizontal hole d and
Are formed so that their openings face each other at the upper right portion of the intersecting portion.
【0006】また、凹部eはこれを形成する相対向する
2つの側面fとgとの間の間隔がビームスプリッタdの
板厚の略2倍に形成されて、また、2つの凹部eとeの
奥面間の間隔はビームスプリッタdの長さと略同じか又
は稍大きく形成されている。Further, the recess e is formed such that the distance between the two opposing side faces f and g forming the recess e is approximately twice the plate thickness of the beam splitter d, and the two recesses e and e are formed. The distance between the inner surfaces of the two is substantially equal to or slightly larger than the length of the beam splitter d.
【0007】hはビームスプリッタdの両端部を凹部
e、e内において支持するためのバネ部材であり、その
長さがビームスプリッタdと同じでその幅がビームスプ
リッタdの板厚の略2倍をした基部iと該基部iの長手
方向に沿う側縁の一方の両端部から垂設されその下端が
J字状に折り曲げられたバネ部j、jとから成る。Reference numeral h is a spring member for supporting both ends of the beam splitter d in the recesses e, e, the length of which is the same as that of the beam splitter d and the width thereof is approximately twice the plate thickness of the beam splitter d. And a spring portion j, which has a lower end bent from one end portion of one side edge along the longitudinal direction of the base portion i and is bent in a J shape.
【0008】そして、ビームスプリッタdはその両端部
が凹部e、e内に位置され、次いで、ビームスプリッタ
dの下側面と凹部e、eの下側の側面g、gとの間にバ
ネ部材hのバネ部j、jが挿入され、これにより、ビー
ムスプリッタdはその両端部が凹部e、eの上側の側面
f、fに押し付けられるようにしてベース部材aに支持
される。Both ends of the beam splitter d are located in the recesses e, e, and then the spring member h is provided between the lower side surface of the beam splitter d and the lower side surfaces g, g of the recesses e, e. The spring parts j of j are inserted, and thereby the beam splitter d is supported by the base member a such that both ends thereof are pressed against the side faces f of the recesses e, e on the upper side.
【0009】[0009]
【発明が解決しようとする課題】ところが、上記した従
来の平行平板型光学部品の支持構造にあっては、ビーム
スプリッタdを支持する2つの凹部e、eのビームスプ
リッタdが押し付けられる側の側面f、fが平滑面でか
つ互いに同一平面内にあるようにしなければ、両端部が
各別に押圧されるビームスプリッタdに歪が生じてしま
い、光学部品としての精度が極めて低下するという問題
があった。However, in the above-described conventional support structure for a parallel plate type optical component, the two recesses e for supporting the beam splitter d, and the side surface of the e on the side on which the beam splitter d is pressed. Unless f and f are smooth surfaces and are in the same plane, there is a problem that the beam splitter d whose both ends are pressed separately is distorted and the accuracy as an optical component is extremely deteriorated. It was
【0010】そのため、光学部品としての精度を低下さ
せないようにするには、上記凹部e、eのビームスプリ
ッタdが押し付けられる側の側面f、fの平面度及びこ
れらが同一平面内であるという精度を高くしなければな
らず、生産効率の低下及びコスト高を招来するという問
題があった。Therefore, in order not to lower the accuracy as an optical component, the flatness of the side surfaces f of the recesses e on the side to which the beam splitter d is pressed and the accuracy that these are in the same plane. Therefore, there is a problem that production efficiency is lowered and cost is increased.
【0011】また、ビームスプリッタdの左右両端部を
凹部e、eに接着剤により固定することも考えられる
が、このようにすると、経年変化により接着剤が、例え
ば、収縮などの変化をしたとき、特に、ビームスプリッ
タdの左右両端部おける接着剤の収縮などの変化が同じ
ように行われない場合(むしろこの場合がほとんどであ
る。)、ビームスプリッタdに内部応力が発生し、結
局、歪が生じてしまうことがほとんどであった。It is also conceivable to fix the left and right ends of the beam splitter d to the recesses e, e with an adhesive. However, when this is done, when the adhesive changes, for example, shrinks due to aging. In particular, when changes such as contraction of the adhesive at the left and right ends of the beam splitter d are not the same (rather often, this is the case), internal stress occurs in the beam splitter d, which eventually causes distortion. Was almost always caused.
【0012】[0012]
【課題を解決するための手段】そこで、本発明平行平板
型光学部品の支持構造は、上記した課題を解決するため
に、ベース部材に平滑な基準面を形成し、光学部品はそ
の一端部の一方の平面をベース部材の基準面に当接した
状態でこれに支持したものである。Therefore, in order to solve the above-mentioned problems, the support structure of the parallel plate type optical component of the present invention forms a smooth reference surface on the base member, and the optical component has one end One of the flat surfaces is supported by the reference surface of the base member in a state of being in contact therewith.
【0013】[0013]
【作用】従って、本発明平行平板型光学部品の支持構造
によれば、平行平板型の光学部品のベース部材への支持
部が一方の端部のみであるため、該支持部を支持するた
めに生じる歪は当該支持部のみに発生し、他の部分、即
ち、光が反射又は透過される部分には歪が生ぜず、従っ
て、光学部品としての高精度化を図ることができる。Therefore, according to the supporting structure of the parallel plate type optical component of the present invention, since the supporting part of the parallel plate type optical component to the base member is only one end, the supporting part can be supported. The generated distortion is generated only in the supporting portion, and no distortion occurs in the other portion, that is, the portion where the light is reflected or transmitted. Therefore, the accuracy of the optical component can be improved.
【0014】[0014]
【実施例】以下に、本発明平行平板型光学部品の支持構
造の詳細を添付図面に示した各実施例に従って説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the supporting structure of the parallel plate type optical component of the present invention will be described below with reference to the embodiments shown in the accompanying drawings.
【0015】尚、図面に示した各実施例は、本発明平行
平板型光学部品の支持構造を光学ピックアップ装置のビ
ームスプリッタの支持構造に適用したものである。In each of the embodiments shown in the drawings, the supporting structure of the parallel plate type optical component of the present invention is applied to the supporting structure of the beam splitter of the optical pickup device.
【0016】図1に本発明平行平板型光学部品の支持構
造を適用した光学ピックアップ装置1の一例を示す。FIG. 1 shows an example of an optical pickup device 1 to which a supporting structure for a parallel plate type optical component of the present invention is applied.
【0017】2は上下方向に貫通された縦孔3と該縦孔
3の中間部から一側面に達する横孔4が形成されたベー
ス部材である。Reference numeral 2 is a base member having a vertical hole 3 penetrating in the vertical direction and a horizontal hole 4 extending from the middle portion of the vertical hole 3 to one side surface.
【0018】ベース部材2の縦孔3及び横孔4は前面
(図1において紙面側を前面とし、紙背側を後面とす
る。)に開口されている。The vertical holes 3 and the horizontal holes 4 of the base member 2 are opened on the front surface (the paper surface side is the front surface and the paper spine side is the rear surface in FIG. 1).
【0019】5は上記横孔4の一側面側の開口部に内嵌
状に固定されたレーザーダイオードであり、6はレーザ
ーダイオード5と上記縦孔3との間に配設されたグレー
ティングである。Reference numeral 5 is a laser diode fixedly fitted in an opening on one side surface of the lateral hole 4, and 6 is a grating disposed between the laser diode 5 and the vertical hole 3. ..
【0020】7は縦孔3の下端開口部に配置されたフォ
トダイオードであり、8はフォトダイオード7の上方に
配置された受光レンズである。Reference numeral 7 is a photodiode arranged at the lower end opening of the vertical hole 3, and 8 is a light receiving lens arranged above the photodiode 7.
【0021】9は縦孔3の略中間の位置であって横孔4
が対応する位置に配置されたビームスプリッタであり、
該ビームスプリッタ9は後述するようにレーザーダイオ
ード5の光軸及びフォトダイオード7の光軸の何れに対
しても45度の角度となるように配置されている。Reference numeral 9 is a position approximately in the middle of the vertical hole 3 and is the horizontal hole 4.
Is a beam splitter placed at the corresponding position,
The beam splitter 9 is arranged so as to form an angle of 45 degrees with respect to both the optical axis of the laser diode 5 and the optical axis of the photodiode 7, as described later.
【0022】ビームスプリッタ9は平行平板状のハーフ
ミラーで構成され、後述するように形成された凹部11
にその一端部が挿入された状態でベース部材2にバネ部
材10により支持されている。The beam splitter 9 is composed of a parallel plate half mirror and has a recess 11 formed as described later.
The spring member 10 supports the base member 2 with its one end inserted.
【0023】12は縦孔3の上端開口部に配置されたコ
リメータレンズ、13はコリメータレンズ12の上方で
あって2軸アクチュエータ14に支持された対物レンズ
である。Reference numeral 12 is a collimator lens arranged at the upper end opening of the vertical hole 3, and 13 is an objective lens above the collimator lens 12 and supported by a biaxial actuator 14.
【0024】しかして、レーザーダイオード5から射出
されたビーム光は、グレーティング6を透過した後、ビ
ームスプリッタ9により上方へ向けて反射され、コリメ
ータレンズ12及び対物レンズ13を通してディスク面
15に照射される。The beam light emitted from the laser diode 5, after passing through the grating 6, is reflected upward by the beam splitter 9 and irradiated on the disk surface 15 through the collimator lens 12 and the objective lens 13. ..
【0025】また、ディスク面15により反射された戻
り光は、ビームスプリッタ9及び受光レンズ8を透過し
てフォトダイオード7に入射される。The return light reflected by the disk surface 15 passes through the beam splitter 9 and the light receiving lens 8 and is incident on the photodiode 7.
【0026】ビームスプリッタ9が支持された凹部11
は側方から見て略コ字状を呈し、ベース部材2の縦孔3
と横孔4との交差する部分の左下角部に開口方向が上斜
め右方を向くように形成されている。A recess 11 in which the beam splitter 9 is supported
Has a substantially U shape when viewed from the side, and has a vertical hole 3 in the base member 2.
Is formed at the lower left corner of the intersection of the horizontal hole 4 and the horizontal hole 4 so that the opening direction is directed obliquely upward and rightward.
【0027】凹部11はこれを形成する相対向する2つ
の側面16と17との間の間隔が上記ビームスプリッタ
9の板厚の略2倍に形成され、また、凹部11の開口面
からその奥面までの長さは上記ビームスプリッタ9の長
さの略1/3となっており、凹部11の上側面16はそ
の延長した面がレーザーダイオード5の光軸及びフォト
ダイオード7の光軸の何れに対しても45度の角度を為
すように形成されている。The recess 11 is formed such that the distance between the two opposite side surfaces 16 and 17 forming the recess 11 is approximately twice the plate thickness of the beam splitter 9, and the recess 11 extends from the opening surface to the back. The length up to the surface is approximately 1/3 of the length of the beam splitter 9, and the extended surface of the upper side surface 16 of the recess 11 is either the optical axis of the laser diode 5 or the optical axis of the photodiode 7. It is also formed to form an angle of 45 degrees.
【0028】バネ部材10は、その長さが凹部11の開
口面からその奥面までの長さと略同じで、その幅が凹部
11の2つの側面16と17との間の間隔と略同じにさ
れた基部18と該基部18の一方の側縁から後方に延び
その後端がJ字状に折り曲げられたバネ部19とから成
る。The spring member 10 has a length which is substantially the same as the length from the opening surface of the recess 11 to the back surface thereof, and a width which is substantially the same as the distance between the two side surfaces 16 and 17 of the recess 11. And a spring portion 19 that extends rearward from one side edge of the base portion 18 and whose rear end is bent in a J shape.
【0029】バネ部19は、基部18から突設された下
片19aと該下片19aの先端から前上方に折り返され
その前端が下片19a側に更に折り曲げられたく字状を
したバネ片19bとからなり、下片19aの長さはビー
ムスプリッタ9の前後幅より稍小さく、また、バネ片1
9bの長さは下片19aの略1/3に形成されている。The spring portion 19 has a lower piece 19a projecting from the base portion 18 and a spring piece 19b having a dogleg shape in which the tip of the lower piece 19a is folded back upward and frontward and the front end is further bent toward the lower piece 19a. The length of the lower piece 19a is slightly smaller than the front-back width of the beam splitter 9, and the spring piece 1
The length of 9b is formed to be approximately 1/3 of the lower piece 19a.
【0030】また、バネ片19bの屈曲部19cと下片
19aとの間の間隔はバネ部材10が外力を受けていな
い状態で、凹部11の2つの側面16と17との間の間
隔からビームスプリッタ9の厚さを差し引いた間隔より
も稍大きく形成されている。The distance between the bent portion 19c of the spring piece 19b and the lower piece 19a is the distance between the two side surfaces 16 and 17 of the recess 11 when the spring member 10 receives no external force. It is formed to be slightly larger than the interval obtained by subtracting the thickness of the splitter 9.
【0031】しかして、ビームスプリッタ9はその長さ
方向における一端部が上記凹部11内に位置され、次い
で、ビームスプリッタ9の下面と凹部11の下側面17
との間にバネ部材10のバネ部19が凹部11の前方か
ら挿入される。Thus, the beam splitter 9 has one end in the longitudinal direction located in the recess 11, and then the lower surface of the beam splitter 9 and the lower side surface 17 of the recess 11.
The spring portion 19 of the spring member 10 is inserted from the front of the concave portion 11 between and.
【0032】バネ部材19の凹部11への挿入は、凹部
11の前方からそのバネ部19の後端部を凹部11内に
挿入して行ない、このとき、バネ部19の下片19aは
凹部11の下側面17に、また、バネ部19のバネ片1
9bの屈曲部19cの上面がビームスプリッタ9の下面
にそれぞれ当接されることにより、バネ片19bが下片
19aとの間隔を縮めるように撓まされ、下片19aが
凹部11の下側面17に、また、バネ片19bの屈曲部
19cがビームスプリッタ9の下面の前後方向における
略中央部にそれぞれ弾接される。The spring member 19 is inserted into the recess 11 by inserting the rear end of the spring portion 19 into the recess 11 from the front of the recess 11, and at this time, the lower piece 19a of the spring portion 19 is inserted into the recess 11. The spring piece 1 of the spring portion 19 on the lower side surface 17
By contacting the upper surface of the bent portion 19c of 9b with the lower surface of the beam splitter 9, the spring piece 19b is bent so as to reduce the gap between the lower piece 19a and the lower piece 19a, and the lower piece 19a is formed on the lower surface 17 of the recess 11. In addition, the bent portion 19c of the spring piece 19b is elastically contacted with the lower surface of the beam splitter 9 substantially at the center in the front-rear direction.
【0033】これにより、ビームスプリッタ9は凹部1
1の上側の側面16に押し付けられるようにしてベース
部材2に支持される。As a result, the beam splitter 9 is recessed 1
It is supported on the base member 2 so as to be pressed against the upper side surface 16 of the base member 1.
【0034】尚、バネ部材10のバネ部19は1つのみ
設けたが、これに限らず、長さ方向に離間した位置に2
つのバネ部を形成し、凹部11内において、2つの部位
においてビームスプリッタ9を凹部11の上側面16に
押し付けるようにしても良い。Although only one spring portion 19 of the spring member 10 is provided, the present invention is not limited to this, and two spring portions 19 are provided at positions separated in the length direction.
It is also possible to form two spring portions and press the beam splitter 9 against the upper side surface 16 of the recess 11 at two portions inside the recess 11.
【0035】また、凹部11の上側の側面16は上述の
ようにレーザーダイオード5の光軸及びフォトダイオー
ド7の光軸の何れに対しても45度の角度を為すように
形成されており、これに、ビームスプリッタ9を押し付
けることにより、ビームスプリッタ9は凹部11の上側
の側面16を基準面として、その取付状態が規制され
る。The upper side surface 16 of the recess 11 is formed so as to form an angle of 45 degrees with respect to both the optical axis of the laser diode 5 and the optical axis of the photodiode 7, as described above. By pressing the beam splitter 9 on, the mounting state of the beam splitter 9 is regulated with the upper side surface 16 of the recess 11 as the reference surface.
【0036】しかして、ビームスプリッタ9はその長さ
方向における一端部がベース部材2にバネ部材10によ
り支持されるため、ビームスプリッタ9の上記バネ部材
10により押圧された部分においては歪が生ずるが、押
圧された以外の部分、即ち、レーザービームが反射又は
透過される部分には歪は生じない。Since one end of the beam splitter 9 in the length direction is supported by the base member 2 by the spring member 10, distortion occurs at the portion of the beam splitter 9 pressed by the spring member 10. No distortion occurs in the portion other than the pressed portion, that is, the portion where the laser beam is reflected or transmitted.
【0037】図3は本発明平行平板型光学部品の支持構
造の第2の実施例を示すものである。FIG. 3 shows a second embodiment of the support structure for a parallel plate type optical component of the present invention.
【0038】尚、この第2の実施例が前記第1の実施例
と比較して相違する点は、ビームスプリッタを凹部に支
持する手段が接着剤によるものである点であるので、こ
の第2の実施例の説明については上記第1の実施例との
相違点について主として行い、他の部分については第1
の実施例における同様の部分に付した符号と同じ符号を
付することによりその説明を省略する。The second embodiment differs from the first embodiment in that the means for supporting the beam splitter in the concave portion is an adhesive, so that the second embodiment is different from the first embodiment. With regard to the description of the first embodiment, the differences from the first embodiment will be mainly described, and the other parts will be described with reference to the first embodiment.
The same reference numerals as those given to the same parts in the embodiment are given to omit the explanation.
【0039】20はベース部材2の縦孔3と横孔4との
交差部位であって、その左下角部に形成された凹部であ
り、該凹部20は側方から見て略コ字状を呈し、その開
口方向がレーザーダイオード5の光軸及びフォトダイオ
ード7の光軸の何れに対しても45度の角度の向きにな
るように形成されている。Reference numeral 20 denotes a crossing portion of the vertical hole 3 and the horizontal hole 4 of the base member 2, which is a concave portion formed at a lower left corner thereof, and the concave portion 20 has a substantially U shape when viewed from the side. It is formed so that its opening direction is oriented at an angle of 45 degrees with respect to both the optical axis of the laser diode 5 and the optical axis of the photodiode 7.
【0040】凹部20はこれを形成する相対向する2つ
の側面21と22との間の間隔が上記ビームスプリッタ
9の板厚より稍大きく形成され、また、凹部20の開口
面からその奥面までの長さが上記ビームスプリッタ9の
長さの略1/3となっている。The recess 20 is formed such that the interval between two opposing side faces 21 and 22 forming the recess 20 is slightly larger than the plate thickness of the beam splitter 9, and from the opening face of the recess 20 to the inner face thereof. Is about 1/3 of the length of the beam splitter 9.
【0041】そして、ビームスプリッタ9の凹部20内
での支持は、先ず、凹部20内に接着剤23を注入し、
次いで、ビームスプリッタ9の一端部を上記凹部20内
に挿入し、該挿入したビームスプリッタ9の端部の上側
の面を凹部20の上側の側面21に押し付けるようにし
て、保持する。To support the beam splitter 9 in the recess 20, first, the adhesive 23 is injected into the recess 20,
Next, one end of the beam splitter 9 is inserted into the recess 20, and the upper surface of the inserted end of the beam splitter 9 is pressed against the upper side surface 21 of the recess 20 and held.
【0042】また、凹部20の上側の側面21は上述の
ようにレーザーダイオード5の光軸及びフォトダイオー
ド7の光軸の何れに対しても45度の角度の向きになる
ように形成されており、これに、ビームスプリッタ9を
押し付けることにより、ビームスプリッタ9は凹部20
の上側の側面21を基準面として、その取付状態が規制
される。Further, the upper side surface 21 of the recess 20 is formed so as to be oriented at an angle of 45 degrees with respect to both the optical axis of the laser diode 5 and the optical axis of the photodiode 7, as described above. , The beam splitter 9 is pressed into the concave portion 20.
The side surface 21 on the upper side of is used as a reference surface to restrict the mounting state.
【0043】挿入したビームスプリッタ9の端部の上面
を凹部20の上側面21に押し付けるには、例えば、ビ
ームスプリッタ9の下面と凹部20の下側の側面22と
の間の隙間に薄板部材を嵌挿するようにすると良い。In order to press the upper surface of the end of the inserted beam splitter 9 against the upper side surface 21 of the recess 20, for example, a thin plate member is placed in the gap between the lower surface of the beam splitter 9 and the lower side surface 22 of the recess 20. It is better to insert it.
【0044】しかして、ビームスプリッタ9はその長さ
方向における一端部がベース部材2に接着剤23を介し
て支持されるため、例えば、接着剤23が経年変化によ
り、収縮などの変化をしてもビームスプリッタ9の接着
部においては歪が生ずるが、接着部以外の部分、即ち、
レーザービームが反射又は透過される部分には歪は生じ
ない。Since one end of the beam splitter 9 in the lengthwise direction is supported by the base member 2 via the adhesive 23, the adhesive 23 is subject to changes such as shrinkage due to aging. Although distortion occurs in the bonded portion of the beam splitter 9, the portion other than the bonded portion, that is,
No distortion occurs in the portion where the laser beam is reflected or transmitted.
【0045】[0045]
【発明の効果】以上に記載したところから明らかなよう
に、本発明平行平板型光学部品の支持構造は、ベース部
材と平行平板型をした光学部品とを有し、ベース部材に
は平滑な基準面が形成され、上記光学部品はその一端部
の一方の平面がベース部材の上記基準面に当接された状
態でこれに支持されたことを特徴とする。As is apparent from the above description, the supporting structure of the parallel plate type optical component of the present invention has a base member and a parallel plate type optical component, and the base member has a smooth reference. A surface is formed, and the optical component is supported by the one surface of one end of the optical member in a state of being in contact with the reference surface of the base member.
【0046】従って、本発明平行平板型光学部品の支持
構造によれば、平行平板型の光学部品のベース部材への
支持部が一方の端部のみであるため、該支持部を支持す
るために生じる歪は当該支持部のみに発生し、他の部
分、即ち、光が反射又は透過される部分には歪が生ぜ
ず、従って、光学部品としての高精度化を図ることがで
きる。Therefore, according to the supporting structure of the parallel plate type optical component of the present invention, since the supporting part of the parallel plate type optical component to the base member is only one end, the supporting part is supported. The generated distortion is generated only in the supporting portion, and no distortion occurs in the other portion, that is, the portion where the light is reflected or transmitted. Therefore, the accuracy of the optical component can be improved.
【0047】尚、上記実施例においては、本発明平行平
板型光学部品の支持構造を光学ピックアップ装置のビー
ムスプリッタの支持構造に適用したものものについて説
明したが、これに限らず、平行平板状の光学部品の支持
構造に適用することができる。In the above embodiment, the support structure of the parallel plate type optical component of the present invention is applied to the support structure of the beam splitter of the optical pickup device. It can be applied to a support structure for an optical component.
【0048】また、上記実施例において示した具体的な
形状乃至構造は、本発明平行平板型光学部品の支持構造
の実施に当たっての具体化のほんの一例を示したものに
すぎず、これらによって本発明の技術的範囲が限定的に
解釈されてはならない。Further, the specific shapes and structures shown in the above embodiments are merely examples of the embodiment for carrying out the supporting structure of the parallel plate type optical component of the present invention, and the present invention is realized by these. The technical scope of should not be construed in a limited way.
【図1】図2と共に、本発明平行平板型光学部品の支持
構造を光学ピックアップ装置のビームスプリッタの支持
構造に適用した第1の実施例を示すもので、要部の断面
図である。FIG. 1 is a sectional view of an essential part showing a first embodiment in which the supporting structure of a parallel plate type optical component of the present invention is applied to a supporting structure of a beam splitter of an optical pickup device together with FIG.
【図2】要部を拡大して示す分解斜視図である。FIG. 2 is an exploded perspective view showing an enlarged main part.
【図3】本発明平行平板型光学部品の支持構造を光学ピ
ックアップ装置のビームスプリッタの支持構造に適用し
た第2の実施例を示す要部の拡大断面図である。FIG. 3 is an enlarged sectional view of an essential part showing a second embodiment in which the supporting structure of the parallel plate type optical component of the present invention is applied to the supporting structure of the beam splitter of the optical pickup device.
【図4】図5と共に従来の平行平板型光学部品の支持構
造の一例を示すもので、断面図である。FIG. 4 is a sectional view showing an example of a conventional parallel plate type optical component support structure together with FIG.
【図5】要部を拡大して示す分解斜視図である。FIG. 5 is an exploded perspective view showing an enlarged main part.
2 ベース部材 9 平行平板型光学部品 10 バネ部材 11 凹部 16 基準面 20 凹部 21 基準面 23 接着剤 2 Base Member 9 Parallel Plate Type Optical Component 10 Spring Member 11 Recess 16 Reference Surface 20 Recess 21 Reference Surface 23 Adhesive
Claims (3)
とを有し、ベース部材には平滑な基準面が形成され、上
記光学部品はその一端部の一方の平面がベース部材の上
記基準面に当接された状態でこれに支持されたことを特
徴とする平行平板型光学部品の支持構造。1. A base member and a parallel plate type optical component, wherein a smooth reference surface is formed on the base member, and one flat surface at one end of the optical component is the reference surface of the base member. A supporting structure for a parallel plate type optical component, characterized in that it is supported in a state in which it is in contact with.
よりベース部材の基準面に圧接されたことを特徴とする
請求項1に記載の平行平板型光学部品の支持構造。2. The support structure for a parallel plate type optical component according to claim 1, wherein one flat surface of one end of the optical component is pressed against the reference surface of the base member by a spring.
によりベース部材の基準面に接着されたことを特徴とす
る請求項1又は請求項2に記載の平行平板型光学部品の
支持構造。3. The support structure for a parallel plate type optical component according to claim 1, wherein one flat surface of one end of the optical component is bonded to a reference surface of the base member with an adhesive. ..
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15424192A JP3166301B2 (en) | 1992-05-22 | 1992-05-22 | Support structure of parallel plate type optical component and optical pickup device using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15424192A JP3166301B2 (en) | 1992-05-22 | 1992-05-22 | Support structure of parallel plate type optical component and optical pickup device using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05323178A true JPH05323178A (en) | 1993-12-07 |
JP3166301B2 JP3166301B2 (en) | 2001-05-14 |
Family
ID=15579926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15424192A Expired - Fee Related JP3166301B2 (en) | 1992-05-22 | 1992-05-22 | Support structure of parallel plate type optical component and optical pickup device using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3166301B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7046614B2 (en) | 2002-02-18 | 2006-05-16 | Funai Electric Co., Ltd. | Optical pickup |
WO2013073445A1 (en) * | 2011-11-16 | 2013-05-23 | 三洋電機株式会社 | Optical element mounting structure, and optical pick-up device |
-
1992
- 1992-05-22 JP JP15424192A patent/JP3166301B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7046614B2 (en) | 2002-02-18 | 2006-05-16 | Funai Electric Co., Ltd. | Optical pickup |
WO2013073445A1 (en) * | 2011-11-16 | 2013-05-23 | 三洋電機株式会社 | Optical element mounting structure, and optical pick-up device |
Also Published As
Publication number | Publication date |
---|---|
JP3166301B2 (en) | 2001-05-14 |
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