JPH11211959A - Optical element holding device and optical equipment using the same - Google Patents
Optical element holding device and optical equipment using the sameInfo
- Publication number
- JPH11211959A JPH11211959A JP1713998A JP1713998A JPH11211959A JP H11211959 A JPH11211959 A JP H11211959A JP 1713998 A JP1713998 A JP 1713998A JP 1713998 A JP1713998 A JP 1713998A JP H11211959 A JPH11211959 A JP H11211959A
- Authority
- JP
- Japan
- Prior art keywords
- holding
- optical element
- optical axis
- lens
- coupling
- 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
- Lens Barrels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光学素子保持装置
に関し、さらに詳しくは、例えば一眼レフカメラ用交換
レンズ等の光学機器における製造誤差に起因する複数の
光学素子（レンズ等）の光軸ずれによって発生する性能
劣化を修正するために、製造過程で行なう光学素子の光
軸ずれ修正（複数の光学素子の光軸直交方向の相対位置
の変更）に適した光学素子保持装置に関するものであ
る。[0001] 1. Field of the Invention [0002] The present invention relates to an optical element holding device, and more particularly, to an optical axis shift of a plurality of optical elements (such as lenses) due to a manufacturing error in an optical device such as an interchangeable lens for a single-lens reflex camera. The present invention relates to an optical element holding device suitable for correcting an optical axis shift of an optical element performed in a manufacturing process (changing a relative position of a plurality of optical elements in a direction orthogonal to the optical axis) in order to correct performance degradation caused by the optical element.
【０００２】[0002]
【従来の技術】上記のような光学素子保持装置は従来一
般的に用いられている。以下、その代表的な構成および
光軸ずれの修正方法を説明する。2. Description of the Related Art The above-described optical element holding device is generally used. Hereinafter, a typical configuration and a method of correcting an optical axis shift will be described.
【０００３】図３には、従来の一眼レフカメラ用交換レ
ンズの一部を構成する光学素子保持装置を示している。
この図において、１は案内筒で、フィルム面に対して定
位置に保持されている。この案内筒１には、光軸方向に
延びる案内溝１ａが形成されている。FIG. 3 shows an optical element holding device constituting a part of a conventional interchangeable lens for a single-lens reflex camera.
In this figure, reference numeral 1 denotes a guide cylinder which is held at a fixed position with respect to the film surface. The guide cylinder 1 is formed with a guide groove 1a extending in the optical axis direction.
【０００４】２はカム筒で、案内筒１の外径に光軸回り
での回転のみが可能に嵌合保持されている。このカム筒
２には、カム溝２ａが形成されている。A cam cylinder 2 is fitted and held on the outer diameter of the guide cylinder 1 so as to be rotatable only around the optical axis. The cam cylinder 2 has a cam groove 2a.
【０００５】３は第１レンズ５を保持する第１鏡筒で、
その外径部にて案内筒１の内径に嵌合している。また、
この第１鏡筒３には、案内溝１ａおよびカム溝２ａに係
合するコロ４がビス止めされている。これにより、カム
筒２を光軸回りで回転させると、コロ４が案内溝１ａと
カム溝２ａとの交点にて従動し、第１鏡筒３は光軸方向
に移動する。[0005] Reference numeral 3 denotes a first lens barrel for holding the first lens 5.
The outer diameter portion is fitted to the inner diameter of the guide cylinder 1. Also,
A roller 4 that engages with the guide groove 1a and the cam groove 2a is screwed to the first lens barrel 3. Thus, when the cam barrel 2 is rotated around the optical axis, the roller 4 is driven at the intersection of the guide groove 1a and the cam groove 2a, and the first lens barrel 3 moves in the optical axis direction.
【０００６】６は第２レンズ７を保持する第２鏡筒で、
第１鏡筒３の光軸方向後方に延びるアーム部の後端面に
当接し、ビス９によって上記アーム部にビス止めされて
いる。これにより、第１鏡筒３が光軸方向に移動する
と、第２鏡筒６も一体となって移動する。Reference numeral 6 denotes a second lens barrel for holding the second lens 7,
The first lens barrel 3 is in contact with the rear end surface of the arm portion extending rearward in the optical axis direction, and is screwed to the arm portion by a screw 9. As a result, when the first lens barrel 3 moves in the optical axis direction, the second lens barrel 6 also moves together.
【０００７】このような構成の光学素子保持装置では、
第１鏡筒３と第２鏡筒６の間には光軸直交方向に関して
厳密な位置決めを行っておらず、一定範囲の中で概略の
位置だけが決まるようになっている。これにより、第１
鏡筒３に対する第２鏡筒６の光軸直交方向位置を変更調
整することにより、各部品の製造誤差による第１レンズ
５と第２レンズ７の光軸ずれ（偏芯）を修正して組み立
てることができる。In the optical element holding device having such a configuration,
Strict positioning is not performed between the first lens barrel 3 and the second lens barrel 6 in the direction orthogonal to the optical axis, and only an approximate position is determined within a certain range. Thereby, the first
By changing and adjusting the position of the second lens barrel 6 in the direction perpendicular to the optical axis with respect to the lens barrel 3, the optical axis deviation (eccentricity) between the first lens 5 and the second lens 7 due to a manufacturing error of each component is corrected and assembled. be able to.
【０００８】次に、上記光学素子保持装置の製造工程に
おける光軸ずれ修正方法について説明する。調整に際し
ては、ビス９による第２鏡筒６と第１鏡筒３のビス止め
前の状態で案内筒１を不図示の調整治具本体に固定する
とともに、調整リング８ａ、付勢リング８ｂおよび付勢
ばね８ｃからなる調整治具８をセットする。この状態
で、調整リング８ａは第２鏡筒６のレンズ保持部外径に
嵌合するとともに、調整治具本体に対して光軸直交方向
に移動可能となっている。付勢リング８ｂは調整リング
８ａの内径に嵌合しており、調整リング８ａとの間に配
置された付勢ばね８ｃによって第２鏡筒６に向けて付勢
されている。Next, a description will be given of a method of correcting an optical axis shift in a manufacturing process of the optical element holding device. At the time of adjustment, the guide barrel 1 is fixed to an adjustment jig body (not shown) in a state before the second barrel 6 and the first barrel 3 are screwed by the screw 9, and the adjustment ring 8a, the urging ring 8b and The adjustment jig 8 including the urging spring 8c is set. In this state, the adjustment ring 8a is fitted to the outer diameter of the lens holding portion of the second lens barrel 6, and is movable in the direction orthogonal to the optical axis with respect to the adjustment jig main body. The urging ring 8b is fitted to the inner diameter of the adjusting ring 8a, and is urged toward the second lens barrel 6 by an urging spring 8c arranged between the adjusting ring 8a.
【０００９】このため、第２鏡筒６は、付勢リング８ｂ
によって第１鏡筒３に圧接した状態、すなわち第１鏡筒
３と第２鏡筒６の光軸方向間隔が決められた状態に保持
される。For this reason, the second lens barrel 6 includes an urging ring 8b.
As a result, the first lens barrel 3 is held in pressure contact with the first lens barrel 3, that is, the state in which the distance between the first lens barrel 3 and the second lens barrel 6 in the optical axis direction is determined.
【００１０】そして、調整リング８ａを光軸直交方向に
移動させることにより、第２鏡筒６を所望の光軸直交方
向位置に移動させ、上記光軸ずれを修正することができ
る。こうして、調整治具８を用いて第２鏡筒６を両レン
ズ５，７の光軸ずれを修正した位置に移動させた後に、
ビス９を締め付けることにより、第１鏡筒３と第２鏡筒
６とを光軸ずれがない状態で結合させることができる。Then, by moving the adjustment ring 8a in the direction orthogonal to the optical axis, the second lens barrel 6 can be moved to a desired position in the direction orthogonal to the optical axis, and the optical axis deviation can be corrected. After the second lens barrel 6 is moved to the position where the optical axis deviation of the lenses 5 and 7 is corrected using the adjustment jig 8 in this manner,
By tightening the screw 9, the first lens barrel 3 and the second lens barrel 6 can be connected without any optical axis deviation.
【００１１】[0011]
【発明が解決しようとする課題】しかしながら、上記従
来の光軸ずれ修正方法では、以下に挙げるような欠点が
ある。However, the above-mentioned conventional optical axis deviation correcting method has the following disadvantages.
【００１２】第１に、付勢リング８ｂによって第２鏡筒
６を第１鏡筒３に対して付勢する構成を採っているた
め、この付勢力が第１鏡筒３やカム溝２ａとコロ４との
当接部にも加わることで第１鏡筒３やコロ４を変形させ
てしまった状態で光軸ずれの修正が行われる。従って、
付勢リング８ｂによる付勢を解除すると同時にこれらの
変形が元の状態に戻ることで再び光軸がずれてしまい、
実際には真の光軸ずれを精度良く修正できているとは言
い難い。First, since the second lens barrel 6 is urged against the first lens barrel 3 by the urging ring 8b, this urging force is applied to the first lens barrel 3 and the cam groove 2a. The correction of the optical axis shift is performed in a state where the first lens barrel 3 and the roller 4 are deformed by being applied to the contact portion with the roller 4. Therefore,
When the urging by the urging ring 8b is released and the deformation returns to the original state at the same time, the optical axis shifts again,
Actually, it is difficult to say that the true optical axis deviation can be accurately corrected.
【００１３】第２に、ビス９の締め込み時に発生する部
品の変形による修正精度の悪化が挙げられる。例えば第
１鏡筒３では、ビス９の締め付け摩擦力によるビス９周
りの変形（特にセルフタップビスを使用した場合）が発
生する。また第２鏡筒６でも、ビス９の頭部による摩擦
力によって同じくビス９周りの変形が発生する。そし
て、これらの変形が発生したままの状態で調整治具８を
取り除くと、第２鏡筒６はこれらの変形により生じた応
力を緩和する方向に移動してしまうことになり、やはり
真の光軸ずれを精度良く修正できているとは言い難い。Second, the correction accuracy is deteriorated due to the deformation of the parts generated when the screws 9 are tightened. For example, in the first lens barrel 3, deformation around the screw 9 due to the tightening frictional force of the screw 9 (especially when a self-tapping screw is used) occurs. Also in the second lens barrel 6, deformation around the screw 9 occurs similarly due to the frictional force of the head of the screw 9. Then, if the adjustment jig 8 is removed in a state where these deformations are generated, the second lens barrel 6 moves in a direction in which the stress generated by these deformations is relaxed. It is difficult to say that the axis deviation can be corrected with high accuracy.
【００１４】第３に、第２鏡筒６を修正中に第１鏡筒３
と第２鏡筒６の当接面に発生する摩擦力による第１鏡筒
３の変形によっても同じように修正精度の悪化が問題と
なる。Third, while the second barrel 6 is being modified, the first barrel 3
Similarly, the deformation accuracy of the first lens barrel 3 due to the frictional force generated on the contact surface between the second lens barrel 6 and the second lens barrel 6 also causes a problem of deterioration of the correction accuracy.
【００１５】そこで、本発明は、簡単な構成で、光軸ず
れ修正を精度良く行うことのできる光学素子保持装置を
提供することを目的としている。SUMMARY OF THE INVENTION It is an object of the present invention to provide an optical element holding device capable of accurately correcting an optical axis shift with a simple configuration.
【００１６】[0016]
【課題を解決するための手段】上記の目的を達成するた
め、本発明では、第１光学素子を保持する第１保持部材
と、第２光学素子を保持する第２保持部材と、両保持部
材を結合させるとともに結合途中にてこれら両保持部材
の相対位置の変更を許容するビス等の結合部材と、結合
部材と第２保持部材との間に配置され、少なくとも結合
部材による両保持部材の結合途中にて第２保持部材を第
１保持部材に対して押圧付勢する付勢部材とを設けて光
学素子保持装置を構成している。According to the present invention, a first holding member for holding a first optical element, a second holding member for holding a second optical element, and both holding members are provided. And a coupling member such as a screw that allows the relative position of the two holding members to be changed during the coupling, and a coupling member and the second holding member, and at least coupling of the two holding members by the coupling member. An urging member for urging the second holding member against the first holding member on the way is provided to constitute the optical element holding device.
【００１７】これにより、従来のように外部から第２保
持部材を第１保持部材に対して押圧付勢する調整治具を
用いなくても、第１光学素子と第２光学素子の光軸方向
間隔を決めた状態とし、かつ部品変形を防止して精度の
良い光軸ずれ修正を行なうことを可能としている。Accordingly, the optical axis direction of the first optical element and the second optical element can be reduced without using an adjusting jig for urging the second holding member against the first holding member from the outside as in the related art. The interval is determined, and it is possible to perform accurate optical axis deviation correction by preventing component deformation.
【００１８】なお、上記光学素子保持装置に、両保持部
材の相対位置変更時および結合部材の結合動作時におけ
る第１保持部材の変形を規制する変形規制部材を取り付
けて、第１保持部材の変形による光軸ずれ修正精度の悪
化を防止するのが望ましい。また、結合部材と第２保持
部材との間に、結合部材の結合動作時におけるこの結合
部材と第２保持部材との間の摩擦力の発生を防止する摩
擦防止部材を配置して、第２保持部材の変形により光軸
ずれ修正の精度の悪化を防止するのが望ましい。そし
て、この場合、摩擦防止部材の第１保持部材に対する両
保持部材の相対位置変更面内での移動を規制して、組み
込み後も両保持部材と一体となって可動部を構成できる
ようにするのが望ましい。A deformation restricting member for restricting the deformation of the first holding member when the relative positions of the two holding members are changed and when the connecting member is connected is attached to the optical element holding device. It is desirable to prevent the optical axis deviation correction accuracy from deteriorating. Further, a friction preventing member for preventing generation of a frictional force between the coupling member and the second holding member at the time of the coupling operation of the coupling member is disposed between the coupling member and the second holding member. It is desirable to prevent the accuracy of the optical axis deviation correction from being deteriorated due to the deformation of the holding member. In this case, the movement of the anti-friction member in the relative position changing plane of the two holding members with respect to the first holding member is restricted, so that the movable portion can be integrally formed with the two holding members even after being assembled. It is desirable.
【００１９】さらに、摩擦防止部材を変形規制部材と兼
用したり、付勢部材を結合部材と摩擦防止部材との間に
配置したりして、簡単な構成で効率良く部品の変形を防
止するのが望ましい。Further, by using the friction preventing member also as a deformation restricting member, or disposing an urging member between the connecting member and the friction preventing member, the deformation of the parts can be efficiently prevented with a simple structure. Is desirable.
【００２０】[0020]
【発明の実施の形態】（第１実施形態）図１には、本発
明の第１実施形態であるレンズ保持装置（光学素子保持
装置）を備えた一眼レフカメラ用交換レンズ（光学機
器）の内部構造を示している。この交換レンズは、第１
〜第６群レンズＬ１〜Ｌ６を有する６群構成のレンズで
あり、ズーム動作によって全てのレンズＬ１〜Ｌ６が光
軸方向に移動し、フォーカス動作によって第２群レンズ
Ｌ２が光軸方向に移動する。(First Embodiment) FIG. 1 shows an interchangeable lens (optical apparatus) for a single-lens reflex camera equipped with a lens holding device (optical element holding device) according to a first embodiment of the present invention. 2 shows the internal structure. This interchangeable lens is the first
A sixth group of lenses including a sixth group lens L1 to L6, wherein all the lenses L1 to L6 move in the optical axis direction by a zoom operation, and the second group lens L2 moves in an optical axis direction by a focus operation. .
【００２１】このとき、第３群レンズＬ３と第６群レン
ズＬ６とが一体的に移動し、第５群レンズＬ５は光軸方
向への移動とは別に、振れ補正動作を行なうために光軸
直交方向にも移動する。At this time, the third lens unit L3 and the sixth lens unit L6 move integrally, and the fifth lens unit L5 is moved along the optical axis to perform a shake correction operation separately from the movement in the optical axis direction. It also moves in the orthogonal direction.
【００２２】１０１はマウントで、カメラ本体に取り付
けるためのバヨネット部を有しており、固定筒１０２に
ビス止め固定されている。１０３は外装環で、マウント
１０１と固定筒１０２との間に挟み込まれて固定されて
いる。Reference numeral 101 denotes a mount, which has a bayonet portion for attaching to a camera body, and is fixed to a fixed cylinder 102 with screws. An outer ring 103 is sandwiched and fixed between the mount 101 and the fixed cylinder 102.
【００２３】外装環１０３には、目盛窓１０４、名称プ
レート１０５、ＳＷパネル１０６が取り付けられてお
り、ＳＷパネル１０６に設けられたスイッチを切り換え
ることによって、オートフォーカスや振れ補正などの機
能を選択して使用することができる。A scale window 104, a name plate 105, and a SW panel 106 are attached to the outer ring 103. By switching switches provided on the SW panel 106, functions such as auto focus and shake correction are selected. Can be used.
【００２４】１０７は案内筒で、固定筒１０２がビス止
めされることでカメラ本体に対して固定部を構成してい
る。案内筒１０７の外周には、バヨネット結合によって
光軸回りの回転のみ可能となっているカム筒１０８が嵌
合している。これにより、カム筒１０８を回転させる
と、案内筒１０７に設けられた光軸方向の案内溝とカム
筒１０８に設けられたカム溝の交点の移動に従い、第３
群レンズＬ３を保持する３群保持枠１０９、第４群レン
ズＬ４を保持する４群保持枠１１０、振れ補正ユニット
１１１および直進筒１１２をそれぞれにビス止めされた
コロ１１３〜１１６を介して光軸方向へ移動させること
ができる。Reference numeral 107 denotes a guide tube, which forms a fixed portion with respect to the camera body by fixing the fixed tube 102 with screws. The outer periphery of the guide cylinder 107 is fitted with a cam cylinder 108 that can be rotated only around the optical axis by bayonet coupling. Thus, when the cam barrel 108 is rotated, the third point follows the movement of the intersection of the guide groove in the optical axis direction provided in the guide barrel 107 and the cam groove provided in the cam barrel 108.
The optical axis of the third group holding frame 109 for holding the group lens L3, the fourth group holding frame 110 for holding the fourth group lens L4, the shake correction unit 111, and the rectilinear barrel 112 via rollers 113 to 116 screwed respectively. Can be moved in any direction.
【００２５】３群保持枠１０９には、絞り駆動部と絞り
羽根部とから構成される電磁絞りユニット１１７がビス
止めされている。また３群保持枠１０９の後端には、第
６群レンズＬ６を保持する６群保持枠１１８が、補強板
１１９およびばね座金１２０とともにビス１４５によっ
てビス止めされている。The third group holding frame 109 is screwed with an electromagnetic diaphragm unit 117 composed of a diaphragm driving unit and a diaphragm blade. At the rear end of the third group holding frame 109, a sixth group holding frame 118 for holding the sixth group lens L6 is screwed together with a reinforcing plate 119 and a spring washer 120 with a screw 145.
【００２６】４群保持枠１１０の前端にはフック部が設
けられており、このフック部には、開放口径の決定およ
び有害光のカットを目的とする移動絞り１２１が前方よ
り弾性結合されている。これにより、３群保持枠１０９
を間に挟んだ状態での移動絞り１２１と４群保持枠１１
０との結合を容易としている。A hook is provided at the front end of the fourth-group holding frame 110, and a movable aperture 121 for determining an open aperture and cutting off harmful light is elastically connected to the hook from the front. . Thereby, the third group holding frame 109
Diaphragm 121 and fourth-group holding frame 11 with
It is easy to combine with 0.
【００２７】振れ補正ユニット１１１は、第５群レンズ
Ｌ５を光軸直交方向に駆動可能に保持しており、マグネ
ットおよびコイルとから構成される駆動部によって第５
群レンズＬ５を駆動する。The shake correction unit 111 holds the fifth lens unit L5 so as to be drivable in a direction orthogonal to the optical axis, and the fifth lens unit L5 is driven by a drive unit including a magnet and a coil.
The group lens L5 is driven.
【００２８】直進筒１１２には、フィルター枠１２２が
ビス止めされている。A filter frame 122 is screwed to the rectilinear barrel 112.
【００２９】フィルター枠１２２の先端外周には、バヨ
ネット部が、内周にはネジ部がそれぞれ設けられてお
り、それぞれフード、フィルター等のアクセサリーが装
着可能となっている。また、フィルター枠１２２には、
第１群レンズＬ１を保持する１群保持枠１２３がビス止
めされている。A bayonet portion is provided on the outer periphery of the distal end of the filter frame 122, and a screw portion is provided on the inner periphery, so that accessories such as a hood and a filter can be attached. Also, in the filter frame 122,
The first group holding frame 123 for holding the first group lens L1 is screwed.
【００３０】フィルター枠１２２と１群保持枠１２３の
当接部はそれぞれ周方向に延びる斜面形状に形成されて
おり、１群保持枠１２３を回転させてフィルター枠１２
２に取り付けることにより、１群保持枠１２３のフィル
ター枠１２２に対する光軸方向の取り付け位置を選択す
ることができる。これにより、製造誤差による広角側と
望遠側の焦点位置のずれを補正することができる。The abutting portions of the filter frame 122 and the first group holding frame 123 are each formed in a slope shape extending in the circumferential direction.
By attaching the first group holding frame 123 to the filter frame 122, the mounting position of the first group holding frame 123 with respect to the filter frame 122 in the optical axis direction can be selected. As a result, it is possible to correct the deviation between the focal positions on the wide-angle side and the telephoto side due to manufacturing errors.
【００３１】１２４は化粧環で、前面にレンズ名称等の
表示が印刷されている。Reference numeral 124 denotes a makeup ring on which a display such as a lens name is printed on the front surface.
【００３２】１２５はフォーカスユニットで、案内筒１
０７にビス止めされている。フォーカスユニット１２５
は、主として振動波モータと差動機構とで構成されてお
り、振動波モータのロータ回転量とマニュアルリング１
２６の回転量に応じたフォーカスキー１２７の回転量を
出力する。Reference numeral 125 denotes a focus unit, which is a guide cylinder 1
It is screwed to 07. Focus unit 125
Is mainly composed of a vibration wave motor and a differential mechanism.
The rotation amount of the focus key 127 corresponding to the rotation amount of the focus key 127 is output.
【００３３】フォーカスユニット１２５の前側には、水
平および垂直方向の振れの角速度を検出する一対の振動
ジャイロ１２８が半田付けされたジャイロ基板１２９
が、ゴムダンパー（不図示）を介してビス止めされてい
る。A gyro substrate 129 to which a pair of vibrating gyros 128 for detecting angular velocities in horizontal and vertical directions is soldered is provided in front of the focus unit 125.
Are screwed via rubber dampers (not shown).
【００３４】また、フォーカスユニット１２５から円弧
状に延出した突出部の外周には、グレイコードパターン
が形成されたエンコーダフレキ１３０が貼り付けられて
いる。An encoder flexure 130 on which a gray code pattern is formed is attached to an outer periphery of a protruding portion extending from the focus unit 125 in an arc shape.
【００３５】さらに、フォーカスユニット１２５の前側
における振動ジャイロ１２８、エンコーダフレキ１３０
が設けられていない位相には突出部が設けられており、
この突出部にはコロ１３１がビス止めされている。Further, the vibration gyro 128 and the encoder flexure 130 on the front side of the focus unit 125
There is a protrusion on the phase where is not provided,
A roller 131 is screwed to the protrusion.
【００３６】１３２はズーム操作環で、周方向に設けら
れている溝にコロ１３１が係合することで、光軸方向の
移動が規制された状態で光軸回りの回転のみが可能とな
っている。ズーム操作環１３２の内周には、カム筒１０
８にビス止めされたズームキー１３３が係合する凹部が
設けられている。これによりズームキー１３３を介し
て、ズーム操作環１３２と一体的にカム筒１０８を回転
させることができる。Reference numeral 132 denotes a zoom operation ring, in which a roller 131 is engaged with a groove provided in the circumferential direction, so that only rotation about the optical axis is possible while movement in the optical axis direction is restricted. I have. On the inner periphery of the zoom operation ring 132, the cam cylinder 10
8 is provided with a recess in which a zoom key 133 screwed is engaged. Thus, the cam barrel 108 can be rotated integrally with the zoom operation ring 132 via the zoom key 133.
【００３７】１３４は中間筒で、外周にはズーム操作環
１３２の内周に設けられた光軸方向に延びる溝に係合す
る突起部が、内周にはフィルター枠１２２の外周に設け
られた突起部が係合するリード溝が設けられている。こ
のため、ズーム操作環１３２と一体的に回転し、ズーム
操作環１３２の回転方向の位置とフィルター枠１２２の
光軸方向の位置に応じて光軸方向に進退する。Reference numeral 134 denotes an intermediate cylinder, on the outer periphery of which a projection engaging with a groove extending in the optical axis direction provided on the inner periphery of the zoom operation ring 132 is provided. A lead groove with which the projection engages is provided. For this reason, it rotates integrally with the zoom operation ring 132 and advances and retreats in the optical axis direction according to the position of the zoom operation ring 132 in the rotation direction and the position of the filter frame 122 in the optical axis direction.
【００３８】本交換レンズでは、振動ジャイロ１２８を
カメラ本体から離れた位置（フォーカスユニット１２５
の前）に配置することで、カメラ本体が発生する振動
（シャッター幕走行やミラーアップ・ダウンの振動な
ど）が振動ジャイロ１２８に伝わりにくい構造としてお
り、ケース内に収納するなど従来用いられてきた手法を
必要としていない。また、ズーム操作環１３２の光軸方
向の位置規制部を振動ジャイロ１２８が設けられていな
い位相に設けることで、レンズ外径を大きくせずに振動
ジャイロを配置することができるようにしている。これ
らの手法により本交換レンズの小型化が達成されてい
る。In this interchangeable lens, the vibration gyro 128 is moved away from the camera body (the focus unit 125).
(Before), the vibration generated by the camera body (shutter curtain running, mirror up / down vibration, etc.) is hardly transmitted to the vibrating gyro 128, and it has been conventionally used such as being housed in a case. No method is required. Further, by providing the position restricting portion of the zoom operation ring 132 in the optical axis direction at a phase where the vibration gyro 128 is not provided, the vibration gyro can be arranged without increasing the lens outer diameter. With these techniques, the interchangeable lens has been downsized.
【００３９】１３５はズーム操作環１３２の外周に巻き
付けられたズームゴムで、１３６はズーム操作環１３２
の前端部に弾性結合しているネームリングである。１３
７はズーム操作環１３２にビス止めされたズームブラシ
で、エンコーダフレキ１３０のグレイコードパターン上
を摺動して、ズーム操作環１３２とエンコーダフレキ１
３０の位置関係を検出するために用いられる。Reference numeral 135 denotes a zoom rubber wound around the outer periphery of the zoom operation ring 132;
Is a name ring elastically connected to the front end of the name ring. 13
Reference numeral 7 denotes a zoom brush screwed to the zoom operation ring 132, which slides on the gray code pattern of the encoder flexure 130 to move the zoom operation ring 132 and the encoder flexure 1
30 is used to detect the positional relationship.
【００４０】１３８はインナーカム筒で、コロ１３９が
コイルばねを介してビス止めされている。このコロ１３
９は、案内筒１０７に設けられたカム溝およびカム筒１
０８に設けられた光軸方向溝に係合する。このため、イ
ンナーカム筒１３８はカム筒１０８と一体的に回転しな
がら光軸方向に進退する。Reference numeral 138 denotes an inner cam cylinder, in which a roller 139 is screwed via a coil spring. This roller 13
9 is a cam groove provided on the guide cylinder 107 and the cam cylinder 1
08 engages with the optical axis direction groove. Therefore, the inner cam barrel 138 advances and retreats in the optical axis direction while rotating integrally with the cam barrel 108.
【００４１】１４０は第２群レンズＬ２を保持する２群
保持枠で、外周に設けられた突起部がインナーカム筒１
３８の内周に設けられたカム溝に係合している。また、
２群保持枠１４０から延出したキー部は、フォーカスキ
ー１２７と一体的に回転するよう係合している。Reference numeral 140 denotes a second group holding frame for holding the second group lens L2.
38 is engaged with a cam groove provided on an inner periphery of the cam 38. Also,
The key portion extending from the second group holding frame 140 is engaged with the focus key 127 so as to rotate integrally therewith.
【００４２】このため、２群保持枠１４０は、カム筒１
０８が回転する（フォーカスキー１２７は停止）と、イ
ンナーカム筒１３８の光軸方向進退量とインナーカム筒
１３８のカム溝の回転に伴う係合点の光軸方向変化量の
合計量だけ光軸方向に進退する。For this reason, the second group holding frame 140 is
08 is rotated (the focus key 127 is stopped), the amount of movement in the optical axis direction of the inner cam barrel 138 and the amount of change in the optical axis direction of the engagement point associated with the rotation of the cam groove of the inner cam barrel 138 in the optical axis direction. To go back and forth.
【００４３】また、フォーカスキー１２７が回転する
（カム筒１０８は停止）と、回転しながらインナーカム
筒１３８のカム溝との係合点の光軸方向変化量に応じて
進退する。本交換レンズでは、これらの機構により、イ
ンナーフォーカスにおける焦点距離変化に伴なう焦点位
置ずれをメカ的に補正して第２群レンズＬ２を光軸方向
に進退させる。When the focus key 127 rotates (the cam barrel 108 stops), the focus key 127 advances and retreats in accordance with the amount of change in the optical axis direction at the point of engagement with the cam groove of the inner cam barrel 138 while rotating. In the present interchangeable lens, these mechanisms mechanically correct the focal position shift accompanying the focal length change in the inner focus, and move the second group lens L2 forward and backward in the optical axis direction.
【００４４】１４１は目盛シートで、フォーカスユニッ
ト１２５の出力であるフォーカスキー１２７と一体的に
回転し、目盛窓１０４と合わせて焦点位置の表示を行
う。Reference numeral 141 denotes a scale sheet, which rotates integrally with a focus key 127 output from the focus unit 125, and displays a focus position together with the scale window 104.
【００４５】１４２はメイン基板で、フォーカスユニッ
ト１２５、電磁絞りユニット１１７、振れ補正ユニット
１１１、ジャイロ基板１２９およびエンコーダフレキ１
３０と可撓性フレキシブル基板を介して又は直接、電気
的に接続され、各種制御を行なう。Reference numeral 142 denotes a main board, which includes a focus unit 125, an electromagnetic diaphragm unit 117, a shake correction unit 111, a gyro board 129, and an encoder flexible 1
30 and is electrically connected directly or via a flexible substrate to perform various controls.
【００４６】１４３はマウント１０１にビス止めされ、
メイン基板１４２とフレキシブル基板を介して接続され
てた接点ブロックであり、カメラ本体との通信および電
源の供給を行なうために設けられている。143 is screwed to the mount 101,
The contact block is connected to the main board 142 via a flexible board, and is provided for communication with the camera body and power supply.
【００４７】１４４は裏ブタで、マウント１０１に弾性
結合して有害光をカットしている。以上のように構成さ
れた交換レンズでは、ズーム操作環１３２を回転させる
と、ズームキー１３３を介してカム筒１０８が回転し、
上記機構に従い全てのレンズＬ１〜Ｌ６が光軸方向に進
退し、ズーミングが行われる。なお、この際、第３群レ
ンズＬ３と第６群レンズＬ６とは一体的に進退する。A back cover 144 is elastically connected to the mount 101 to cut off harmful light. In the interchangeable lens configured as described above, when the zoom operation ring 132 is rotated, the cam barrel 108 is rotated via the zoom key 133,
According to the above mechanism, all the lenses L1 to L6 advance and retreat in the optical axis direction, and zooming is performed. At this time, the third group lens L3 and the sixth group lens L6 move forward and backward integrally.
【００４８】一方、オートフォーカス時には振動波モー
タの駆動により、マニュアルフォーカス時にはマニュア
ルリング１２６を回転させることにより、それぞれフォ
ーカスキー１２７を回転させる。これにより、上記機構
に従い第２群レンズＬ２を進退させ、フォーカシングを
行うことができる。On the other hand, the focus key 127 is rotated by driving the vibration wave motor at the time of auto focus and by rotating the manual ring 126 at the time of manual focus. This allows the second group lens L2 to advance and retreat according to the above mechanism, and to perform focusing.
【００４９】また、振れ補正動作時には、振動ジャイロ
１２８の出力およびエンコーダフレキ１３０の出力に応
じて振れ補正ユニット１１１を制御し、第５群レンズＬ
５を光軸直交面内で、発生している振れによるフィルム
面での像の移動を打ち消す方向に駆動する。In the shake correction operation, the shake correction unit 111 is controlled in accordance with the output of the vibration gyro 128 and the output of the encoder flexure 130, and the fifth lens group L
5 is driven in a direction orthogonal to the optical axis in a direction to cancel the movement of the image on the film surface due to the generated shake.
【００５０】次に、第３群および第６群レンズＬ３，Ｌ
６を保持して一体的に連結する上記レンズ保持装置の構
成について図２を用いて詳しく説明する。このレンズ保
持装置では、図１で説明した構成部品のうち、マウント
１０１、外装環１０３、マニュアルリング１２６、メイ
ン基板１４２、裏ブタ１４４及びこれらに固定された部
品を組み込む前に、固定筒１０２を調整治具本体（不図
示）に固定した状態で、第６群レンズＬ６を保持させた
６群保持枠（請求の範囲にいう第２保持部材）１１８
を、第３群レンズＬ３を保持させた３群保持枠（同、第
１保持部材）１０９に光軸直交方向位置を調整して取り
付ける。Next, the third and sixth lens units L3, L
The configuration of the lens holding device that holds and integrally connects the lens 6 will be described in detail with reference to FIG. In this lens holding device, among the components described with reference to FIG. 1, before mounting the mount 101, the outer ring 103, the manual ring 126, the main board 142, the back cover 144 and the components fixed thereto, the fixing cylinder 102 is removed. A sixth-group holding frame (second holding member) 118 holding the sixth group lens L6 while being fixed to an adjustment jig body (not shown).
Is attached to a third group holding frame (first holding member) 109 holding the third group lens L3 by adjusting the position in the direction orthogonal to the optical axis.
【００５１】これにより、第１から第６群レンズＬ１〜
Ｌ６およびこれらを保持する各部品の製造誤差によって
生ずる光学性能の劣化を修正し、所望の光学性能を得る
ことができる。Thus, the first to sixth lens units L1 to L1
A desired optical performance can be obtained by correcting the deterioration of the optical performance caused by the manufacturing error of L6 and the parts holding them.
【００５２】３群保持枠１０９は、第３群レンズＬ３を
保持する円筒部からフランジ部を介してレンズ後方へと
延出する３本の足部１０９ａを有している。各足部１０
９ａの後端には、光軸直交面である６群保持枠との当接
面１０９ｂ、ビス下穴１０９ｄおよび一対の円柱状突起
１０９ｃが設けられている。The third group holding frame 109 has three legs 109a extending from the cylindrical portion holding the third group lens L3 to the rear of the lens via a flange. Each foot 10
At the rear end of 9a, there are provided a contact surface 109b with the sixth group holding frame, which is a plane orthogonal to the optical axis, a screw prepared hole 109d, and a pair of columnar projections 109c.
【００５３】６群保持枠１１８の第６群レンズＬ６を保
持する円筒部の外周における３群保持枠１０９の当接面
１０９ｂおよびビス下穴１０９ｄに対応する位置の３箇
所には、３群保持枠１０９との当接面とビス穴１１８ｂ
とが設けられたフランジ部１１８ａが形成されている。Three groups are held at three positions on the outer periphery of the cylindrical portion of the sixth group holding frame 118 which holds the sixth lens L6, corresponding to the contact surface 109b and the screw lower hole 109d of the third group holding frame 109. Contact surface with frame 109 and screw hole 118b
And a flange portion 118a provided with the above.
【００５４】補強板（請求の範囲にいう変形規制部材兼
摩擦防止部材）１１９は、略中空円盤状の形状をしてお
り、３群保持枠１０９のビス下穴１０９ｄおよび円筒状
突起１０９ｃに対応する３箇所の位置に、ビス穴１１９
ａ、丸穴１１９ｂおよび長穴１１９ｃがそれぞれ設けら
れている。The reinforcing plate (deformation restricting member / anti-friction member) 119 has a substantially hollow disk shape and corresponds to the screw lower hole 109d and the cylindrical projection 109c of the third group holding frame 109. Screw holes 119 at the three positions
a, a round hole 119b and a long hole 119c are provided respectively.
【００５５】これら部品により構成されるレンズ保持装
置は、以下のようにして組み立てられる。まず、３群保
持枠１０９の当接面１０９ｂに６群保持枠１１８のフラ
ンジ部１１８ａを突き当てる。次に、補強板１１９を６
群保持枠１１８のフランジ部１１８ａに乗せた状態で、
ネジ軸部回りにばね座金（請求の範囲にいう付勢部材）
１２０を取り付けたセルフタップ用ビス（請求の範囲に
いう結合部材）１４５によって３箇所でビス止めされ
る。The lens holding device constituted by these components is assembled as follows. First, the flange portion 118a of the sixth group holding frame 118 is abutted against the contact surface 109b of the third group holding frame 109. Next, the reinforcing plate 119 is
In a state of being placed on the flange portion 118a of the group holding frame 118,
Spring washer around the screw shaft (biasing member as claimed)
Self-tapping screws (joining members in the claims) 145 with the attached 120 are screwed at three places.
【００５６】次に、本レンズ保持装置における光軸ずれ
修正は、ビス１４５を途中まで締め付けた状態、すなわ
ち６群保持枠１１８を３群保持枠１０９に完全に固定で
きていないが、ばね座金１２０によるばね力によって補
強板１１９を介して６群保持枠１１８を３群保持枠１０
９に対して押し付けた状態（請求の範囲にいう結合途
中）で行われる。Next, in the correction of the optical axis deviation in the present lens holding device, the screw 145 is partially tightened, that is, the sixth group holding frame 118 is not completely fixed to the third group holding frame 109, but the spring washer 120 is not fixed. Of the sixth group holding frame 118 via the reinforcing plate 119 by the spring force of the third group holding frame 10
This is carried out in a state where it is pressed against (during the joining in the claims).
【００５７】６群保持枠１１８には、従来の調整リング
８ａに相当する調整治具（不図示）が取り付けられてい
る。そして、この調整治具を介して６群保持枠１１８を
光軸直交面内で移動させる。An adjusting jig (not shown) corresponding to the conventional adjusting ring 8a is attached to the sixth group holding frame 118. Then, the sixth group holding frame 118 is moved in the plane orthogonal to the optical axis via the adjustment jig.
【００５８】ここで、６群保持枠１１８のビス穴１１８
ｂの径は、想定される必要ずれ修正量分だけ６群保持枠
１１８が移動できるように、ビス１４５のネジ軸部外径
に対して大きく設定されている。Here, the screw hole 118 of the sixth group holding frame 118
The diameter of “b” is set to be larger than the outer diameter of the screw shaft portion of the screw 145 so that the sixth group holding frame 118 can be moved by an assumed necessary displacement correction amount.
【００５９】また、３群保持枠１０９の円筒状突起１０
９ｃの根元位置の当接面１０９ｂに対する光軸方向後方
への突出量ｔ１と、６群保持枠１１８のフランジ部１１
８ａの厚みｔ２とは、ｔ１＜ｔ２の関係にある。このた
め、補強板１１９を介して６群保持枠１１８を確実に３
群保持枠１０９に押し付けることで、第３群レンズＬ３
と第６群レンズＬ６との光軸方向間隔を決めることがで
きる。The cylindrical projection 10 of the third group holding frame 109
The protrusion amount t1 of the base 9c toward the rear side in the optical axis direction with respect to the contact surface 109b, and the flange portion 11 of the sixth group holding frame 118
The thickness t2 of 8a has a relationship of t1 <t2. For this reason, the sixth group holding frame 118 is securely connected to the third group via the reinforcing plate 119.
By pressing against the group holding frame 109, the third group lens L3
The distance between the lens and the sixth lens unit L6 in the optical axis direction can be determined.
【００６０】さらに、補強板１１９の丸穴１１９ｂおよ
び長穴１１９ｃに３群保持枠１０９の３本の足部１０９
ａに設けられた円筒状突起１０９ｃが嵌合することによ
り、補強板１１９は３群保持枠１０９に対して両保持枠
１０９，１１８の光軸修正面（請求の範囲にいう相対位
置変更面）内で位置決めされるとともに、３群保持枠１
０９の足部１０９ａの変形もそれぞれ規制される。この
ため、補強板１１９は３群保持枠１０９（さらには６群
保持枠１１８）と一体となり、全体で可動部を構成する
ことが可能となる。Further, the three feet 109 of the third group holding frame 109 are inserted into the round holes 119b and the elongated holes 119c of the reinforcing plate 119.
When the cylindrical projection 109c provided on the holding frame 109a is fitted, the reinforcing plate 119 is adjusted with respect to the third group holding frame 109 by the optical axis correcting surfaces of both the holding frames 109 and 118 (the relative position changing surface in the claims). And the third group holding frame 1
09 is also restricted. For this reason, the reinforcing plate 119 is integrated with the third group holding frame 109 (further, the sixth group holding frame 118), and it is possible to constitute a movable portion as a whole.
【００６１】以上説明したように、本実施形態のレンズ
保持装置では、６群保持枠１１８を３群保持枠１０９に
結合させるためのビス１４５を締め付ける途中におい
て、ばね座金１２０のばね力によって６群保持枠１１８
と３群保持枠１０９の光軸方向間隔を決めた状態で光軸
ずれ修正のために６群保持枠１１８を３群保持枠１０９
に対して光軸直交方向に移動させることができるように
構成されている。このため、図３で示したように調整治
具による外部からの付勢力（付勢リング８ｂおよび付勢
ばね８ｃによる付勢力）によって各構成部品が変形して
しまうといった不具合が発生しないため、真の光軸ずれ
を精度良く修正することができる。As described above, in the lens holding apparatus of the present embodiment, the sixth group is held by the spring force of the spring washer 120 while the screw 145 for connecting the sixth group holding frame 118 to the third group holding frame 109 is being tightened. Holding frame 118
With the distance between the third group holding frame 109 and the third group holding frame 109 determined, the sixth group holding frame 118 is replaced with the third group holding frame 109 to correct the optical axis shift.
Is configured to be able to be moved in a direction orthogonal to the optical axis. For this reason, as shown in FIG. 3, there is no problem that each component is deformed by an external urging force (the urging force of the urging ring 8b and the urging spring 8c) by the adjusting jig. Can be accurately corrected.
【００６２】なお、本発明の具体的構成は本実施形態で
説明したものに限られるものではない。例えば、スペー
ス的に許されるのであれば、ばね座金１２０によるばね
力を、ビス１４５の下とは別の位置で発生させることも
可能であるし、ばね座金１２０と補強板１１９の位置を
入れ換えて構成してもよい。また、ばね座金１２０に代
えて、皿ばね、波形座金、板ばね、コイルばねといった
ばね性を有する部品を用いることも可能である。The specific configuration of the present invention is not limited to the configuration described in the present embodiment. For example, if space permits, the spring force of the spring washer 120 can be generated at a position different from the position below the screw 145, or the positions of the spring washer 120 and the reinforcing plate 119 are interchanged. You may comprise. Further, instead of the spring washer 120, it is also possible to use a component having spring properties such as a disc spring, a wave washer, a plate spring, and a coil spring.
【００６３】また、本実施形態のレンズ保持装置では、
ビス１４５を締め付ける際にビス１４５のネジ軸部と３
群保持枠１０９のビス下穴１０９ｄとの間やビス１４５
の頭部と６群保持枠１１８のフランジ部１１８ａとの間
に発生する摩擦力、又は６群保持枠１１８を３群保持枠
１０９に対して光軸直交方向に移動させる際に当接面１
０９ｂに発生する摩擦力による３群保持枠１０９の足部
１１９ａの変形・ねじれや６群保持枠１１８のフランジ
部１１８ａのねじれを、以下のように防止している。In the lens holding device of the present embodiment,
When tightening the screw 145, the screw shaft part of the screw 145 and 3
A gap between the screw holding hole 109d of the group holding frame 109 and the screw 145.
The frictional force generated between the head of the lens group and the flange portion 118a of the sixth group holding frame 118, or the contact surface 1 when the sixth group holding frame 118 is moved relative to the third group holding frame 109 in the direction orthogonal to the optical axis.
The deformation and torsion of the foot 119a of the third-group holding frame 109 and the torsion of the flange 118a of the sixth-group holding frame 118 due to the frictional force generated at 09b are prevented as follows.
【００６４】第１に、ビス１４５のネジ軸部とＬ３保持
枠１０９のビス下穴１０９ｄとの間や６群保持枠１１８
と３群保持枠１０９との当接面に発生する摩擦力による
３群保持枠１０９の足部１０９ａの変形・ねじれに関し
ては、補強板１１９によって足部１０９ａの変形を規制
することでこれを防止している。First, between the screw shaft portion of the screw 145 and the screw lower hole 109d of the L3 holding frame 109 or the sixth group holding frame 118
The deformation and torsion of the foot 109a of the third group holding frame 109 due to the frictional force generated on the contact surface between the third group holding frame 109 and the third group holding frame 109 are prevented by restricting the deformation of the foot 109a by the reinforcing plate 119. doing.
【００６５】第２に、ビス１４５の頭部と６群保持枠１
１８のフランジ部１１８ａとの間に発生する摩擦力によ
るフランジ部１１８ａのねじれに関しては、３群保持枠
１０９との間の相対移動が規制された補強板１１９を間
に挟むことによって、上記摩擦力の発生を補強板１１９
とビス１４５との間に限定することで防止している。な
お、本実施形態にて用いた補強板１１９は、他の部品強
度が充分であれば省くことも可能であり、必要に応じて
用いればよい。Second, the head of the screw 145 and the sixth group holding frame 1
With respect to the torsion of the flange portion 118a due to the frictional force generated between the flange portion 118a and the flange portion 118a, the reinforcing plate 119 whose relative movement between the flange portion 118a and the third-group holding frame 109 is restricted is interposed therebetween, so that the frictional force is increased. Generation of reinforcement plate 119
And screw 145 to prevent this. The reinforcing plate 119 used in the present embodiment can be omitted if the strength of other components is sufficient, and may be used as needed.
【００６６】また、それぞれの部品変形要因に対してそ
れぞれ別体の変形防止部材を設けても構わないし、テフ
ロンシート等の摩擦係数の低い部品を変形防止部材とは
別に挟み込むようにして摩擦力の発生・伝達を防止する
ようにしてもよい。A separate deformation preventing member may be provided for each component deformation factor, or a component having a low friction coefficient such as a Teflon sheet may be sandwiched separately from the deformation preventing member to reduce the frictional force. Generation and transmission may be prevented.
【００６７】[0067]
【発明の効果】以上説明したように、本発明によれば、
結合部材と第２保持部材との間、すなわち装置内部に配
置された付勢部材の付勢力によって、光軸ずれ修正中に
おける両保持部材に保持された光学素子の間隔を決める
ようにしているので、従来のように装置外部から付勢力
を加える調整治具を用いた場合のような部品変形を防止
して、精度の良い光軸ずれ修正を行なうことができる。As described above, according to the present invention,
Since the biasing force of the biasing member disposed between the coupling member and the second holding member, that is, the biasing member disposed inside the apparatus, determines the distance between the optical elements held by the two holding members during the correction of the optical axis deviation. In addition, it is possible to prevent a component deformation as in the case of using an adjustment jig for applying a biasing force from the outside of the apparatus as in the related art, and to accurately correct the optical axis deviation.
【００６８】なお、第１保持部材の変形を規制する部材
を設ければ、第１保持部材の変形により光軸ずれ修正精
度が悪化することを防止することができる。If a member for restricting the deformation of the first holding member is provided, it is possible to prevent the deformation of the first holding member from deteriorating the accuracy of correcting the optical axis deviation.
【００６９】また、結合部材と第２保持部材との間にお
ける摩擦力の発生を防止する部材を設ければ、第２保持
部材の変形により光軸ずれ修正精度が悪化することも防
止することができる。Further, if a member for preventing generation of frictional force between the coupling member and the second holding member is provided, it is possible to prevent the accuracy of correcting the optical axis deviation from being deteriorated due to the deformation of the second holding member. it can.
【００７０】そして、この場合、摩擦防止部材の第１保
持部材に対する両保持部材の相対位置変更面内での移動
を規制すれば、組み込み後も両保持部材と一体となって
可動部を構成させることができる。In this case, if the movement of the friction preventing member in the relative position changing plane of the two holding members with respect to the first holding member is restricted, the movable portion is formed integrally with the two holding members even after the assembly. be able to.
【００７１】さらに、摩擦防止部材を変形規制部材と兼
用したり、付勢部材を結合部材と摩擦防止部材との間に
配置したりすれば、簡単な構成で効率良く部品の変形を
防止することができる。Further, if the friction preventing member is also used as a deformation restricting member, or the urging member is disposed between the connecting member and the friction preventing member, the deformation of the parts can be efficiently prevented with a simple structure. Can be.
【図１】本発明の第１実施形態である一眼レフカメラ用
交換レンズの断面図。FIG. 1 is a cross-sectional view of an interchangeable lens for a single-lens reflex camera according to a first embodiment of the present invention.
【図２】上記交換レンズに備えられたレンズ保持装置の
構造を示す分解斜視図。FIG. 2 is an exploded perspective view showing a structure of a lens holding device provided in the interchangeable lens.
【図３】従来の一眼レフカメラ用交換レンズに備えられ
たレンズ保持装置における光軸ずれ修正方法を示す一部
断面図。FIG. 3 is a partial cross-sectional view showing a method of correcting an optical axis shift in a lens holding device provided in a conventional interchangeable lens for a single-lens reflex camera.
１０７ 案内筒 １０８ カム筒 １０９ ３群保持枠 １１０ ４群保持枠 １１１ 振れ補正ユニット １１２ 直進筒 １１７ 電磁絞りユニット １１８ ６群保持枠 １１９ 補強板 １２０ ばね座金 １２２ フィルター枠 １２３ １群保持枠 １２５ フォーカスユニット １３８ インナーカム筒 １４０ ２群保持枠 107 Guide cylinder 108 Cam cylinder 109 Third group holding frame 110 Fourth group holding frame 111 Shake correction unit 112 Straight-ahead cylinder 117 Electromagnetic aperture unit 118 Sixth group holding frame 119 Reinforcement plate 120 Spring washer 122 Filter frame 123 First group holding frame 125 Focus unit 138 Inner cam cylinder 140 2nd group holding frame
Claims (11)
と、 第２光学素子を保持する第２保持部材と、 前記両保持部材を結合させるとともに結合途中にてこれ
ら両保持部材の相対位置の変更を許容する結合部材と、 前記結合部材と前記第２保持部材との間に配置され、少
なくとも前記結合部材による前記両保持部材の結合途中
にて前記第２保持部材を前記第１保持部材に対して押圧
付勢する付勢部材とを有することを特徴とする光学素子
保持装置。1. A first holding member for holding a first optical element, a second holding member for holding a second optical element, and the two holding members are coupled together, and the relative positions of the two holding members during the coupling. A coupling member that allows a change in the position of the first holding member, and the second holding member is disposed between the coupling member and the second holding member, and the second holding member is connected to the first holding member at least during the coupling of the two holding members by the coupling member And an urging member for urging the optical element.
付けにより結合させるビスであることを特徴とする請求
項１に記載の光学素子保持装置。2. The optical element holding device according to claim 1, wherein said connecting member is a screw for connecting said holding members by tightening.
置された環状部材であることを特徴とする請求項２に記
載の光学素子保持装置。3. The optical element holding device according to claim 2, wherein the urging member is an annular member disposed around an axis of the screw.
前記結合部材の結合動作時における前記第１保持部材の
変形を規制する変形規制部材を設けたことを特徴とする
請求項１から３のいずれかに記載の光学素子保持装置。4. The apparatus according to claim 1, further comprising a deformation restricting member that restricts deformation of the first holding member when the relative positions of the two holding members are changed and when the connecting member is connected. The optical element holding device according to any one of the above.
記第１保持部材との間に配置したことを特徴とする請求
項４に記載の光学素子保持装置。5. The optical element holding device according to claim 4, wherein the deformation restricting member is disposed between the coupling member and the first holding member.
形規制部材との間に配置したことを特徴とする請求項４
又は５に記載の光学素子保持装置。6. The apparatus according to claim 4, wherein said urging member is disposed between said coupling member and said deformation regulating member.
Or the optical element holding device according to 5.
に、前記結合部材の結合動作時におけるこの結合部材と
前記第２保持部材との間の摩擦力の発生を防止する摩擦
防止部材を配置したことを特徴とする請求項１から６の
いずれかに記載の光学素子保持装置。7. A friction preventing member for preventing the generation of a frictional force between the coupling member and the second holding member during the coupling operation of the coupling member between the coupling member and the second holding member. The optical element holding device according to any one of claims 1 to 6, wherein
に対する前記両保持部材の相対位置変更面内での移動が
規制されていることを特徴とする請求項７に記載の光学
素子保持装置。8. The optical element holding device according to claim 7, wherein the friction prevention member is restricted from moving in a relative position change plane of the two holding members with respect to the first holding member. .
前記結合部材の結合動作時における前記第１保持部材の
変形を規制する変形規制部材が設けられており、 前記摩擦防止部材は、前記変形規制部材を兼ねているこ
とを特徴とする請求項７又は８に記載の光学素子保持装
置。9. A deformation restricting member is provided for restricting deformation of the first holding member when the relative positions of the two holding members are changed and when the connecting member is connected. The optical element holding device according to claim 7, wherein the optical element holding device also serves as a regulating member.
摩擦防止部材との間に配置されていることを特徴とする
請求項７から９のいずれかに記載の光学素子保持装置。10. The optical element holding device according to claim 7, wherein the urging member is disposed between the coupling member and the friction preventing member.
光学素子保持装置を用いたことを特徴とする光学機器。11. An optical apparatus using the optical element holding device according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01713998A JP3792875B2 (en) | 1998-01-29 | 1998-01-29 | Optical element holding device and optical apparatus using the same |
| US09/236,339 US6738198B2 (en) | 1998-01-29 | 1999-01-25 | Optical-element holding mechanism, image-shake correcting device and optical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01713998A JP3792875B2 (en) | 1998-01-29 | 1998-01-29 | Optical element holding device and optical apparatus using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11211959A true JPH11211959A (en) | 1999-08-06 |
| JP3792875B2 JP3792875B2 (en) | 2006-07-05 |
Family
ID=11935690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01713998A Expired - Fee Related JP3792875B2 (en) | 1998-01-29 | 1998-01-29 | Optical element holding device and optical apparatus using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3792875B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018013797A (en) * | 2017-09-25 | 2018-01-25 | 株式会社ニコン | Lens barrel and imaging apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5776179B2 (en) * | 2010-12-20 | 2015-09-09 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Alignment mechanism, lens barrel and optical equipment |
| US9354419B2 (en) | 2010-12-20 | 2016-05-31 | Samsung Electronics Co., Ltd. | Adjustment device, lens barrel, and optical apparatus |
-
1998
- 1998-01-29 JP JP01713998A patent/JP3792875B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018013797A (en) * | 2017-09-25 | 2018-01-25 | 株式会社ニコン | Lens barrel and imaging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3792875B2 (en) | 2006-07-05 |
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