JP3262417B2 - Viewfinder with adjustment mechanism - Google Patents
Viewfinder with adjustment mechanismInfo
- Publication number
- JP3262417B2 JP3262417B2 JP18504193A JP18504193A JP3262417B2 JP 3262417 B2 JP3262417 B2 JP 3262417B2 JP 18504193 A JP18504193 A JP 18504193A JP 18504193 A JP18504193 A JP 18504193A JP 3262417 B2 JP3262417 B2 JP 3262417B2
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- adjustment
- holding member
- holding
- finder
- 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.)
- Expired - Lifetime
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- Viewfinders (AREA)
- Telescopes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、カメラのファインダー
の製造工程上での視度、視差調整を行わせるファインダ
ーの調整機構に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finder adjusting mechanism for adjusting diopter and parallax in a camera finder manufacturing process.
【０００２】[0002]
【従来の技術】カメラのファインダーの調整とはファイ
ンダーを構成する各部品の製造誤差の積み重ねによって
生じる設計中心からの光学的なズレを補正する為に行う
ものであり、主に、ファインダー像のピント調整を行う
視度調整と、実祭の撮影画角とファインダーの画角を所
定距離で一致させる為の視差（パララックス）調整に大
別される。従来、ファインダー視度は、対物レンズ、又
は接眼レンズの光軸方向への移動によって補正され、所
定の規格値内に収めるような調整が必要である。特に高
倍率のズーム比（２倍以上）を有するカメラのファイン
ダーでは望遠時と広角時で視度が大幅に変わる為、製造
工程中にズームの各ポジションで、所定の規格内に視度
を収めることが重要となる。2. Description of the Related Art Adjustment of a viewfinder of a camera is performed to correct an optical deviation from a design center caused by accumulation of manufacturing errors of components constituting the viewfinder. It is roughly divided into diopter adjustment for adjusting and parallax (parallax) adjustment for matching the angle of view of the actual festival with the angle of view of the finder at a predetermined distance. Conventionally, the finder diopter is corrected by moving the objective lens or the eyepiece in the optical axis direction, and needs to be adjusted to fall within a predetermined standard value. In particular, in the viewfinder of a camera having a high magnification zoom ratio (2 times or more), the diopter changes greatly between telephoto and wide-angle, so that the diopter falls within a predetermined standard at each zoom position during the manufacturing process. It becomes important.
【０００３】一方、視差調整は、ファインダー光学系を
構成する各種光学部品で補正することが可能である。例
えば、実像ファインダーについて考えてみると、（１）
焦点面に存在する視野枠を移動する、（２）ポロプリズ
ムの頂きを変更する、（３）ミラーの頂きを変更する、
（４）対物レンズを上下又は左右方向に偏心させる、
等、種々の方法が考えられ、また実施されてきた。On the other hand, parallax adjustment can be corrected by various optical components constituting a finder optical system. For example, consider the real image finder, (1)
Move the field frame existing in the focal plane, (2) change the peak of the Porro prism, (3) change the peak of the mirror,
(4) the objective lens is decentered vertically or horizontally.
Various methods have been considered and implemented.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ファイ
ンダーの視度調整及び視差調整は、本来、その性質上、
ファインダー装置をカメラ本体に取り付けた状態で調整
するのが望ましいわけであるが、上記従来例では、各調
整が別々の箇所に分散し、またその調整も調妙かつ複雑
で高度な熟連を要するものであった。However, the diopter adjustment and the parallax adjustment of the finder are inherently inherent in nature.
It is desirable to make adjustments while the viewfinder device is attached to the camera body, but in the above-mentioned conventional example, each adjustment is distributed to separate locations, and the adjustments are also delicate, complicated and require a high degree of skill Was something.
【０００５】この調整の不具合の原因を整理すると、以
下の事項が挙げられる。 （１）製品を小型化する為に、調整に要する十分なスペ
ースを確保できない。 （２）調整方法自体複雑（ミラーの頂き調整、プリズム
の頂き調整等）であり、特殊な治具によって行わなけれ
ばならない。 （３）調整後、その状態を保持する為接着を行う必要が
あるが、 この際、固着するまでの間に調整した位置か
らずれてしまう可能性があった。従って接着工程が完了
するまで次の工程に進めず効率が悪かった。 （４）調整を行う箇所がファインダー内部に位置してい
る為、調整の祭にゴミが付着しやすく、ファインダー像
の妙化を防ぐ為の工程管理が難しかった。 （５）調整箇所が別々の位置にある為、調整時の際の作
業効率が悪かった。 （６）光学系の構成が複雑となるに従い、調整部品又は
調整工具が極めて難しい構成となるおそれがあった。[0005] The causes of this adjustment failure are summarized as follows. (1) In order to reduce the size of the product, a sufficient space required for adjustment cannot be secured. (2) The adjustment method itself is complicated (mirror height adjustment, prism height adjustment, etc.) and must be performed using a special jig. (3) After the adjustment, it is necessary to perform bonding in order to maintain the state, but at this time, there is a possibility that the position may be shifted from the adjusted position until it is fixed. Therefore, the process could not proceed to the next process until the bonding process was completed, resulting in poor efficiency. (4) Since the place to be adjusted is located inside the viewfinder, dust easily adheres to the adjustment festival, and it is difficult to control the process to prevent the viewfinder image from becoming sober. (5) The work efficiency at the time of adjustment is poor because the adjustment points are at different positions. (6) As the configuration of the optical system becomes more complicated, there is a possibility that the adjustment component or the adjustment tool becomes extremely difficult.
【０００６】[0006]
【課題を解決するための手段】上述の課題を解決するた
め、本発明のファインダ装置は、対物レンズの一部を光
軸と垂直方向に移動可能に仮保持する第１保持部材と、
前記第１保持部材に仮保持された対物レンズの一部を光
軸方向（前後方向）に移動可能に仮保持する第２保持部
材を有する調整機構を設け、ファインダー装置の組立て
調整の内、視度と視差の調整をこの対物レンズの位置調
整で行うようにした。Means for Solving the Problems To solve the above problems,
Therefore, the finder device of the present invention is a first holding member for temporarily holding a part of the objective lens movably in a direction perpendicular to the optical axis,
An adjustment mechanism having a second holding member for temporarily holding a part of the objective lens temporarily held by the first holding member so as to be movable in the optical axis direction (front-back direction) is provided. The adjustment of the degree and the parallax is performed by adjusting the position of the objective lens.
【０００７】[0007]
【実施例】図１乃至図３は本発明の第１実施例を示す。1 to 3 show a first embodiment of the present invention.
【０００８】図１（Ａ）（Ｂ）は本発明のファインダー
光学系の全体配置で、図１（Ａ）は、望遠側のファイン
ダ光学系の配置図、図１（Ｂ）は、同広角側のファイン
ダの光学系の配置図をそれぞれ示す。尚、カメラの撮影
レンズはファインダから離れて配置されているものとす
る。FIGS. 1A and 1B show the overall arrangement of a finder optical system according to the present invention. FIG. 1A shows the arrangement of a finder optical system on the telephoto side, and FIG. 1 shows an arrangement diagram of the optical system of the finder. It is assumed that the photographing lens of the camera is disposed apart from the finder.
【０００９】１は、対物レンズの第１群、２ａ、２ｂは
一体に移動する対物レンズの第２群であり、不図示の手
段で、撮影系のズームレンズの動作に連動して第１、２
群のレンズが移動し、所定のズーム倍率が得られる様に
構成されている。Reference numeral 1 denotes a first group of objective lenses , and 2a and 2b denote second groups of objective lenses that move together. 2
The lens of the group is moved so that a predetermined zoom magnification can be obtained.
【００１０】３は、表面で反射する平面鏡、４は凸平形
フィールドレンズであり、平面側がファインダ像の結像
面である。５は、被写体像を反転させる為の３面反射の
ポロプリズムで５ａ、５ｂが屋根面、６は接眼レンズで
ある。困みに平面鏡３はいわゆるポロプリズム５の第１
の反射面に相当する。Reference numeral 3 denotes a plane mirror that reflects light on the surface, and 4 denotes a convex flat field lens, and the plane side is an image forming plane of a finder image. Reference numeral 5 denotes a three-sided reflection Porro prism for reversing the subject image, 5a and 5b are roof surfaces, and 6 is an eyepiece. The flat mirror 3 is the first of the so-called Porro prisms 5
Corresponding to the reflection surface.
【００１１】次に図２、図３を用いて本実施例の構造を
詳細に説明する。Next, the structure of this embodiment will be described in detail with reference to FIGS.
【００１２】図２は、対物レンズの第１群１を正面から
見た状態、図３は、側面からの断面図であり、ファイン
ダーの視度及び視差調整を行う構成を示したものであ
る。FIG. 2 is a front view of the first group 1 of the objective lens , and FIG. 3 is a cross-sectional view from the side, showing a configuration for adjusting diopter and parallax of the finder.
【００１３】同図において、１は図１に示した対物レン
ズの第１群（対物レンズの一部、以下単に対物レンズと
も言う）に当り、１ａは、レンズ作用面、１ｂ、１ｃは
平面で形成されたレンズ受け面（鍔）である。またレン
ズの四隅には切欠き部が１ａが形成され、この部分は調
整の際のレンズの掴み部の作用をすると共に調整後はレ
ンズを恒久に保持する為、接着材注入部として機能す
る。In FIG. 1, reference numeral 1 denotes the objective lens shown in FIG.
The first group of lenses (part of the objective lens, hereinafter simply referred to as the objective lens)
Per also referred), 1a is a lens working surface, 1b, 1c is a lens receiving surface formed by a plane (flange). Notches 1a are formed at the four corners of the lens, and this portion functions as a gripping portion of the lens at the time of adjustment and functions as an adhesive injection portion because the lens is permanently held after the adjustment.
【００１４】７は、上記対物レンズ１を保持する為の保
持部材で一対のバネ性押え弧７ｂを具え、側方から挿入
された対物レンズ１の平面で形成されたレンズ受け部７
ａをレンズ前側から押え弧７ｂによって対物レンズ１を
保持部材７の後壁へ押し付けて仮保持するように構成し
てある。尚、後壁には光束を通すに十分な開口を備え
る。８は、保持部材７を光軸に沿って移動可能に保持す
る保持枠であり、保持部材７の両側面は保持枠８に設け
た４箇所の突起部８ａで受けるようにし、摺動時の摩擦
を低減するように上下面は保持部材７及び保持枠８が互
いに嵌合するような構成になっている。つまり、保持部
材７が保持枠８に対して対物レンズ１の光軸の前後方向
に移動可能なように構成されている。Reference numeral 7 denotes a holding member for holding the objective lens 1, which comprises a pair of resilient holding arcs 7b, and a lens receiving portion 7 formed by the plane of the objective lens 1 inserted from the side.
a is held from the front side of the lens by the holding arc 7b.
The holding member 7 is configured to be temporarily held by pressing it against the rear wall. It should be noted that the rear wall is provided with an opening sufficient to allow a light beam to pass. Reference numeral 8 denotes a holding frame that holds the holding member 7 so as to be movable along the optical axis. Both side surfaces of the holding member 7 are received by four protrusions 8a provided on the holding frame 8, so that the holding member 8 can be used for sliding. The upper and lower surfaces are configured such that the holding member 7 and the holding frame 8 are fitted to each other so as to reduce friction. That is, the holding member 7 is configured to be movable in the front-rear direction of the optical axis of the objective lens 1 with respect to the holding frame 8.
【００１５】保持部材７の保持枠８への仮係止は、保持
部材７に一体的に形成された弾性部７ｃが保持枠８の内
壁面に当接することによって行われる。具体的なこの光
軸方向の調整は、図３に示す偏心治具９の偏心ピン９ａ
を保持枠、８の上部に形成された穴を介して保持部材７
の光軸に垂直な長穴７ｄに挿入し、回転させることによ
って行われ、調整後は上記保持部材７及び保持枠８を接
着固定する。The temporary holding of the holding member 7 to the holding frame 8 is performed by the elastic portion 7c formed integrally with the holding member 7 contacting the inner wall surface of the holding frame 8. The specific adjustment in the optical axis direction is performed by the eccentric pin 9a of the eccentric jig 9 shown in FIG.
Through a hole formed in the upper portion of the holding frame 8 and the holding member 7.
This is carried out by inserting it into a long hole 7d perpendicular to the optical axis and rotating it. After the adjustment, the holding member 7 and the holding frame 8 are bonded and fixed.
【００１６】困みに、１０はガイドバーであり、第１群
の保持枠８の嵌合穴８ｂ、及び第２群の保持部材１１の
嵌合穴１１ａを介して両対物レンズを保持している。[0016] In trouble, reference numeral 10 denotes a guide bar which holds both objective lenses via the fitting hole 8b of the holding frame 8 of the first group and the fitting hole 11a of the holding member 11 of the second group. I have.
【００１７】ズーム連動時の両対物レンズの移動配置規
制は、ばね掛け部８ｃに掛けられた不図示の引張りバネ
によって、第１、２群の対物レンズが引き寄せられ、８
ｄ、１１ｂに示す係合ビンが、不図示のカム面に当接す
ることによって行われるものとする。この点は本発明に
直接関係しないので説明を省く。The first and second groups of objective lenses are pulled by a tension spring (not shown) hooked on a spring hook portion 8c to restrict the movement and arrangement of the two objective lenses when the zoom is linked.
It is assumed that the engagement bins d and 11b are brought into contact with a cam surface (not shown). This point is not directly related to the present invention and will not be described.
【００１８】次に上記構成において、具体的なファイン
ダーの調整を説明する。まず、調整に当っては、撮影常
用距離で視度及び視差の調整を行う必要があるが、ここ
では便宜上、この常用距離を３ｍとする。Next, a specific adjustment of the finder in the above configuration will be described. First, in the adjustment, it is necessary to adjust the diopter and the parallax at the photographing working distance, but here the working distance is set to 3 m for convenience.
【００１９】まず、視度補正は、敏感度の高い望遠側の
状態図１（Ａ）の状態で行い、図３に示す偏心治具９を
回転させることによって保持部材７を保持枠８に対して
光軸方向に弾性部７ｃの摩擦力に抗して移動させること
によって行い、所定距離（３ｍ）での像が接眼レンズを
通して覗いた時、最も鮮明になるように調整し、この状
態で保持部材７、保持枠８が一体となるように接着す
る。First, the diopter correction is performed in the telephoto state where the sensitivity is high, as shown in FIG. 1A, and the holding member 7 is moved to the holding frame 8 by rotating the eccentric jig 9 shown in FIG. This is performed by moving in the optical axis direction against the frictional force of the elastic portion 7c so that an image at a predetermined distance (3 m) is adjusted to be the sharpest when viewed through the eyepiece, and held in this state. The member 7 and the holding frame 8 are bonded so as to be integrated.
【００２０】次に、視差調整は、所定距離の物体に対し
て、撮影光学系とファイダ光学系の画角を一致させる為
の調整であるが、これは以下の方法で行う。まず、所定
距離（この場合３ｍとする）、所定焦点（たとえば、望
遠１１５ｍｍ）上での撮影系の画角範囲を被写体距離上
のチャートで示しておき、この画角と一致する様にファ
インダーの接眼レンズを覗きながら、対物レンズ１を切
欠き部１ａを介してピンセット等で掴み 、上下、左右
に動かし調整した後、接着固定する。Next, the parallax adjustment is an adjustment for matching the angle of view of the photographing optical system and the viewfinder optical system with respect to an object at a predetermined distance. This is performed by the following method. First, the range of the angle of view of the photographing system at a predetermined distance (in this case, 3 m) and a predetermined focus (for example, at a telephoto of 115 mm) is shown by a chart on the object distance, and the viewfinder is positioned so as to match this angle of view. While looking through the eyepiece, the objective lens 1 is gripped with tweezers or the like via the cutout portion 1a, moved up and down, left and right, adjusted, and then adhesively fixed.
【００２１】上記実施例では、視度調整に上部から偏心
ビンを用いて調整を行っているが、必ずしも、この方法
のみに限定されるわけではなく、たとえば保持部材７に
ねじを切っておき、保持部材７、保持枠８間を引張りば
ねで引き合うように付勢しておき前記側からビスを締め
ビスの背面で両保持部材を引き離して相対位置を規制す
る方法や、スペーサを保持部材間に挿入し、両部剤を一
定距離に保つ様な構成をとっても良い。In the above embodiment, the diopter adjustment is performed by using the eccentric bin from the top. However, the diopter adjustment is not necessarily limited to this method. A method in which the holding member 7 and the holding frame 8 are urged so as to be pulled by a tension spring, and a screw is tightened from the side to separate the two holding members on the back surface of the screw to regulate the relative position, or a spacer is provided between the holding members. A configuration may be adopted in which both components are inserted and are kept at a fixed distance.
【００２２】また、上記構成のメリットとして、実施例
にも示されるように対物レンズが上下方向に対して余裕
がない場合に有効であり、対物レンズが上下に切られた
外形が小判状のレンズでも容易に対物レンズを光軸に沿
って前後に移動可能で、調整が極めて容易である。図４
及び図５は本発明の第２の実施例を示す。図４は、図２
と同様に第１群の対物レンズを正面から見た図であり、
図５は、図４の対物レンズを一点鎖線で示す中心線で切
った断面図である。Also, as an advantage of the above configuration, as shown in the embodiment, the present invention is effective when the objective lens has no margin in the vertical direction, and the objective lens has an oval-shaped outer shape cut vertically. However, the objective lens can be easily moved back and forth along the optical axis, and the adjustment is extremely easy. FIG.
FIG. 5 shows a second embodiment of the present invention. FIG.
FIG. 9 is a view of the first group of objective lenses as viewed from the front similarly to FIG.
FIG. 5 is a cross-sectional view of the objective lens of FIG. 4 taken along a center line indicated by a chain line.
【００２３】同図において、２１は対物レンズ（図１の
１に対応）であり、２１ａはレンズ作用面、２１ｂ及び
２１ｃは視差調整時にレンズを掴む為の治具取付部であ
る。２２は第１実施例の７に対応する対物レンズの保持
部材であり、２２ａはリング状に形成された平面のレン
ズ受け部、２２ｂは、下側から挿入された対物レンズ２
１をバネの負荷で仮固定する為にレンズ前側に位置する
ように形成した１対のレンズ押え弧である。２３は、保
持部材２２を保持する保持枠であり、嵌合穴２３ａで保
持部材２２に形成された軽圧入部２２ｃと共に係止され
ている。In FIG. 1, reference numeral 21 denotes an objective lens (corresponding to 1 in FIG. 1), reference numeral 21a denotes a lens working surface, and reference numerals 21b and 21c denote jig mounting portions for gripping the lens during parallax adjustment. Reference numeral 22 denotes a holding member for the objective lens corresponding to 7 of the first embodiment, 22a is a flat lens receiving portion formed in a ring shape, and 22b is the objective lens 2 inserted from below.
This is a pair of lens pressing arcs formed so as to be located on the front side of the lens in order to temporarily fix 1 with a spring load. Reference numeral 23 denotes a holding frame that holds the holding member 22, and is locked together with the light press-fitting portion 22c formed in the holding member 22 by a fitting hole 23a.
【００２４】尚、保持部材２２と保持枠２３の当接面
は、図５に示す様にそれぞれテーパ面２２ｄ、２３ｂに
なっており、保持枠２３に対し保持部材２２を凹部２２
ｂを掴んでテーパ面に押し付けながら回転させることに
より、保持部材２２に取り付けた対物レンズ２１を光軸
に対し前後方向に移動させることが可能である。尚、上
記実施例では保持部材と保持部材の対向面の夫々に各同
形状のテーパ面を１２０°毎に形成し、３個の面で当接
する様に形成しており、小形化する為に嵌合長が短く押
圧が均一でない場合でも安定する様に形成してある。ま
た、上記実施例では、保持部材２２と保持枠２３との結
合を軽圧入としたが、仮固定の方法はこの方法に限定さ
れず、第１実施例に示した様に保持部材２２のリングの
一部を切断し、この弾性力を用いて保持するようにして
も良い。As shown in FIG. 5, the contact surfaces of the holding member 22 and the holding frame 23 are tapered surfaces 22d and 23b, respectively.
By gripping b and rotating it while pressing it against the tapered surface, the objective lens 21 attached to the holding member 22 can be moved in the front-back direction with respect to the optical axis. In the above embodiment, a taper surface having the same shape is formed on each of the opposing surfaces of the holding member and the holding member at intervals of 120 °, and is formed so as to abut on three surfaces. It is formed so as to be stable even when the fitting length is short and the pressing is not uniform. Further, in the above embodiment, the connection between the holding member 22 and the holding frame 23 is lightly press-fitted. However, the method of the temporary fixing is not limited to this method, and the ring of the holding member 22 as shown in the first embodiment. May be cut and held using this elastic force.
【００２５】一方、保持枠の他の部分の説明を行うと、
第１実施例同様に２３ｃは不図示のガイドバーに嵌合す
る為の穴であり、２３ｄは対物レンズに所定の動きをさ
せる為のカムに当接するカムピンである。また２３ｅは
第１、２群を引き寄せ、図示しないカムに当接させる為
の引張コイルバネを印掛ける為のバネ掛け部２３ｆは保
持枠の回転防止する為のふれ止め用のダボである。On the other hand, the other parts of the holding frame will be described.
As in the first embodiment, reference numeral 23c denotes a hole for fitting into a guide bar (not shown), and reference numeral 23d denotes a cam pin which comes into contact with a cam for causing the objective lens to make a predetermined movement. A spring hook 23f for drawing a tension coil spring for pulling the first and second lens groups and making contact with a cam (not shown) is a dowel for preventing the rotation of the holding frame.
【００２６】上記構成において、具体的なファインダー
の調整で、まず視度調整は保持部材２２の凹部２２ｅを
治具によって掴み、保持枠２３に対し押し付けながら回
転することによって対物レンズ２１を光軸に対し前後方
向に移動させ、所定距離で最も焦点の合う位置に調整を
行う。In the above-described configuration, in the specific finder adjustment, first, the diopter is adjusted by grasping the concave portion 22e of the holding member 22 with a jig and rotating while pressing against the holding frame 23 so that the objective lens 21 is aligned with the optical axis. On the other hand, it is moved in the front-rear direction, and is adjusted to a position where the focus is the best at a predetermined distance.
【００２７】次に、視差調整は、対物レンズの治具取付
部２１ｂ、２１ｃを掴み、保持部材２２に対して上下、
左右に移動させて所定距離に置かれた所定焦点距離にお
ける撮影系の画角と一致する様に調整を行う。Next, the parallax adjustment is performed by grasping the jig mounting portions 21b and 21c of the objective lens, and
The camera is moved left and right to make an adjustment so as to match the angle of view of the photographing system at a predetermined focal length set at a predetermined distance.
【００２８】それぞれ調整後は、位置が移動しない様に
接着固定する。After each adjustment, they are bonded and fixed so as not to move.
【００２９】上記第２実施例のメリットとしては、視
度、視差両調整とも対物レンズの正面側からの調整が可
能であり、ゴミの侵入が問題視されるファインダーに対
して、すべて、ファインダー光学系の外部に出ている部
分で調整ができる点である。この為、ファインダーの調
整工程を本体取り付け後の最終段階に持っていくことが
可能であり、かつゴミの侵入を最小限におさえることが
できる。特に上記構成では、対物レンズを円形にできる
時有効であり、特殊な治具を用いず調整が容易であるば
かりでなく、小型であり、また、構成部品も少ない為、
極めて安いコストで調整可能であることなど有利な点が
多い。The advantage of the second embodiment is that both diopter and parallax can be adjusted from the front side of the objective lens. The point is that it can be adjusted in the part outside the system. For this reason, the finder adjustment process can be brought to the final stage after the main body is attached, and the intrusion of dust can be minimized. In particular, the above configuration is effective when the objective lens can be made circular, and is not only easy to adjust without using a special jig, but also small in size and has few components,
There are many advantages such as being adjustable at extremely low cost.
【００３０】[0030]
【発明の効果】以上説明したように、視度、視差の両調
整をすべて同一の対物レンズ群に持たせることにより以
下の効果がある。 （１）調整箇所を第１群という最も前側にすることがで
き、レンズの前側及び上側に調整のスペースを十分に確
保することができ調整が容易にできる。すなわち、製品
自体の調整部は極めて小型化できる。従って、小型化に
従う調整のやりにくさは発生しない。 （２）調整方法が、光軸に対する水平方向と垂直方向の
２方向にでき、それぞれ独立した調整が容易にできる。 （３）調整後、調整状態を保持する為各部を接着して固
定するが、上述の様に、接着面が最も外部にできるの
で、接着しやすい位置になり、また形状的にも正位置で
接着が可能な為、容易で正確接着ができる。 （４）調整部を最も外側に配置できる為、ファインダー
ユニット完成状態で調整できる。この為、ファインダー
組立て状態で最も問題となる調整時におけるゴミの侵入
を最小限におされることができる。 （５）調整箇所が一箇所に集中している為、調整作業が
しやすく、工程上の工具設定法によっては同時調整も可
能である。 （６）調整に関係する構成部品が少なく安価に調整機構
を構成できる。As described above, the following effects can be obtained by giving both the diopter and parallax adjustments to the same objective lens group. (1) The adjustment position can be located at the most front side of the first group, and a sufficient adjustment space can be secured on the front side and the upper side of the lens, and adjustment can be easily performed. That is, the adjustment section of the product itself can be extremely reduced in size. Therefore, it is not difficult to perform adjustment according to miniaturization. (2) The adjustment method can be performed in two directions, that is, the horizontal direction and the vertical direction with respect to the optical axis, and independent adjustment can be easily performed. (3) After the adjustment, each part is bonded and fixed to maintain the adjustment state. However, as described above, the bonding surface is the most external, so that the position is easy to bond, and the shape is the correct position. Since bonding is possible, easy and accurate bonding is possible. (4) Since the adjustment unit can be arranged at the outermost position, adjustment can be performed in a completed state of the finder unit. For this reason, the intrusion of dust at the time of adjustment, which is the most problematic in the finder assembled state, can be minimized. (5) Since adjustment points are concentrated in one place, adjustment work is easy, and simultaneous adjustment is possible depending on a tool setting method in a process. (6) The number of components related to adjustment is small, and the adjustment mechanism can be configured at low cost.
【図１】本発明の実施例に係るファインダ光学系の光学
断面図。FIG. 1 is an optical sectional view of a finder optical system according to an embodiment of the present invention.
【図２】第１実施例の部分正面図。FIG. 2 is a partial front view of the first embodiment.
【図３】第１実施例の部分断面図。FIG. 3 is a partial sectional view of the first embodiment.
【図４】第２実施例の部分正面図。FIG. 4 is a partial front view of the second embodiment.
【図５】第２実施例の部分断面図。FIG. 5 is a partial sectional view of the second embodiment.
１ 対物レンズ ７ 保持部材 ８ 保持枠 ９ 偏心治具 １０ ガイドバー １１ 第２群保持部材 ２１ 対物レンズ ２２ 保持部材 ２３ 保持枠 DESCRIPTION OF SYMBOLS 1 Objective lens 7 Holding member 8 Holding frame 9 Eccentric jig 10 Guide bar 11 Second group holding member 21 Objective lens 22 Holding member 23 Holding frame
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G03B 13/14 G03B 5/00 G02B 7/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) G03B 13/14 G03B 5/00 G02B 7/02
Claims (5)
ァインダ光学系と、対物レンズの一部を光軸と垂直方向
に移動可能に仮保持する第１保持部材と、前記第１保持
部材に仮保持された対物レンズの一部を光軸方向に移動
可能に仮保持する第２保持手段とを有し、調整後、前記
対物レンズ、第１そして第２保持部材を夫々固定したこ
とを特徴とする調整機構を具えたファインダ装置。A finder optical system having an objective lens and other optical elements; a first holding member for temporarily holding a part of the objective lens movably in a direction perpendicular to an optical axis; Second holding means for temporarily holding a part of the held objective lens so as to be movable in the optical axis direction, and after the adjustment, the objective lens, the first and second holding members are fixed respectively. Finder device with an adjustable mechanism
軸方向の弾性力を付与することで前記対物レンズを仮保
持し、前記第１保持部材と前記第２保持部材の間には光
軸に垂直方向の結合力が付与され、また前記第１保持部
材は前記第２保持部材に嵌合することを特徴とする請求
項１の調整機構を具えたファインダー装置。2. The method according to claim 1, wherein the first holding member temporarily holds the objective lens by applying an elastic force in an optical axis direction to the objective lens, and a light is provided between the first holding member and the second holding member. 2. A finder device having an adjusting mechanism according to claim 1, wherein a coupling force in a vertical direction is applied to an axis, and said first holding member is fitted to said second holding member.
系の相対的に移動する複数レンズの最も物体側のレンズ
であることを特徴とする請求項１もしくは２の調整機構
を具えたファインダ装置。3. The finder device provided with an adjusting mechanism according to claim 1, wherein the objective lens is a lens closest to an object among a plurality of lenses that relatively move in the finder optical system.
は撮影レンズに対する視差調整のために行われることを
特徴とする請求項１乃至３の調整機構を具えたファイン
ダ装置。4. A finder device having an adjusting mechanism according to claim 1, wherein the movement of the objective lens in a direction perpendicular to the optical axis is performed for adjusting parallax with respect to a photographing lens.
を備えたファインダ装置を有することを特徴とするカメ
ラ。5. A camera comprising a finder device provided with the adjusting mechanism according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18504193A JP3262417B2 (en) | 1993-07-27 | 1993-07-27 | Viewfinder with adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18504193A JP3262417B2 (en) | 1993-07-27 | 1993-07-27 | Viewfinder with adjustment mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0743784A JPH0743784A (en) | 1995-02-14 |
| JP3262417B2 true JP3262417B2 (en) | 2002-03-04 |
Family
ID=16163764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18504193A Expired - Lifetime JP3262417B2 (en) | 1993-07-27 | 1993-07-27 | Viewfinder with adjustment mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3262417B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5875893B2 (en) * | 2012-02-23 | 2016-03-02 | 鎌倉光機株式会社 | Optical device, method for adjusting optical component, and method for manufacturing optical device |
-
1993
- 1993-07-27 JP JP18504193A patent/JP3262417B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0743784A (en) | 1995-02-14 |
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