JP2573985Y2 - Mounting structure of photometric element - Google Patents
Mounting structure of photometric elementInfo
- Publication number
- JP2573985Y2 JP2573985Y2 JP1991013549U JP1354991U JP2573985Y2 JP 2573985 Y2 JP2573985 Y2 JP 2573985Y2 JP 1991013549 U JP1991013549 U JP 1991013549U JP 1354991 U JP1354991 U JP 1354991U JP 2573985 Y2 JP2573985 Y2 JP 2573985Y2
- Authority
- JP
- Japan
- Prior art keywords
- photometric
- photometric element
- hole
- element holder
- eccentric
- 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 - Fee Related
Links
Landscapes
- Exposure Control For Cameras (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、例えばカメラ等の露光
検出に使用される測光素子を、所定位置に正確に固定す
るための取付構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for accurately fixing a photometric element used for exposure detection of a camera or the like at a predetermined position.
【０００２】[0002]
【従来の技術】カメラには、撮影レンズを通った光量を
検出するための測光装置が内蔵されていることはよく知
られている。2. Description of the Related Art It is well known that a camera has a built-in photometric device for detecting the amount of light passing through a taking lens.
【０００３】図７は前記測光検出装置の取り付け位置を
説明するための一般的な一眼レフカメラの内部構造を示
す概略図である。カメラボディ１００には撮影レンズＬ
を備えた交換レンズが装着されており、非撮影時には該
撮影レンズＬにより結像された被写体の像を半透過鏡か
らなるメインミラ−１０２により９０度上方に反射して
ピント板１０３に結像し、その像をペンタプリズム１０
４を介してファインダ−接眼レンズ１０５で覗くように
なっている。FIG. 7 is a schematic view showing an internal structure of a general single-lens reflex camera for explaining a mounting position of the photometric detection device. The camera body 100 has a taking lens L
When a non-photographing operation is performed, an image of the subject formed by the photographing lens L is reflected upward by 90 degrees by a main mirror 102 formed of a semi-transmissive mirror to form an image on a focus plate 103 during non-photographing. , The image of the pentaprism 10
4 through a finder-eyepiece 105.
【０００４】前記ペンタプリズム後部の接眼レンズ１０
５の上方には、集光レンズ１０７と測光素子１０８から
構成される測光装置１０６が配置されている。この測光
装置１０６はペンタプリズム１０４を通過したピント板
１０３からの光量を検出し、その信号を露出制御部に送
っているものである。The eyepiece 10 at the rear of the pentaprism
Above 5, a photometric device 106 including a condenser lens 107 and a photometric element 108 is arranged. The photometric device 106 detects the amount of light from the focus plate 103 that has passed through the pentaprism 104 and sends the signal to the exposure control unit.
【０００５】なお、図７において１１０はオ−トフォ−
カス検出部であり、サブミラ−１１１を介して撮影レン
ズを通過した光束を導き、合焦位置を検出している。ま
た１１３はＴＴＬ自動発光ストロボ用の測光検出部であ
り、露光時にフィルム面１１２に当たる光量を直接測光
し、ストロボ発光量を制御している。In FIG. 7, reference numeral 110 denotes an auto
The scum detection unit guides a light beam that has passed through the photographing lens via the sub-mirror 111 to detect a focus position. Reference numeral 113 denotes a photometry detection unit for a TTL automatic light emission strobe, which directly measures the amount of light hitting the film surface 112 during exposure to control the amount of strobe light emission.
【０００６】前記した測光装置１０６の測光素子１０８
は、集光レンズ１０７を通過した光を正確に検出するた
め、組み立て時に左右方向及び上下方向の位置調整が行
われる。この位置調整の手法として、従来では緩孔と止
めねじによる調整固定方法、偏心ピンと接着剤による調
整固定方法、接着剤のみによる固定方法等が採用されて
いた。しかし、いずれの方法によっても固定が完了する
までの間に位置ズレが発生するおそれ等があり、組み付
け作業やその後の調整作業が複雑である等の問題があっ
た。The photometric element 108 of the photometric device 106 described above
In order to accurately detect light that has passed through the condenser lens 107, position adjustment in the left-right direction and the up-down direction is performed during assembly. Conventionally, as a method of this position adjustment, an adjustment fixing method using a loose hole and a set screw, an adjustment fixing method using an eccentric pin and an adhesive, a fixing method using only an adhesive, and the like have been adopted. However, any of these methods may cause a positional shift before the fixing is completed, and there is a problem that the assembling work and the subsequent adjusting work are complicated.
【０００７】また従来では集光レンズ１０７に、ペンタ
プリズム１０４内の乱反射光等のノイズ光が入射するの
を防ぐため、別部材である遮光部材を集光レンズ近くに
取り付けていた。このため部品点数や組み立て工数が多
くなり、コスト的にも高くなるという問題もあった。In the prior art, a separate light-shielding member has been mounted near the condenser lens 107 in order to prevent noise light such as irregularly reflected light in the pentaprism 104 from entering the condenser lens 107. For this reason, there is a problem that the number of parts and the number of assembly steps are increased, and the cost is also increased.
【０００８】[0008]
【考案が解決しようとする課題】本考案は、測光素子を
簡単に所定位置に取り付けられるようにし、かつ位置調
整を簡単に行えるようにすると共に、構成部品の簡略化
と組立工数の削減を目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to make it possible to easily mount a photometric element at a predetermined position, to make it easy to adjust the position, and to simplify the components and reduce the number of assembling steps. It is assumed that.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
の本考案の第１の手段は、測光素子が設けられ、かつ調
整用偏心ピン挿通用の長孔が形成された測光素子ホルダ
ーと、測光用の集光レンズを保持し、かつ前記測光素子
ホルダーを装着するための測光装置支持部と、前記測光
素子ホルダーを前記測光装置支持部に当接し、これらを
弾性的に挾持するための押え板と、前記測光素子ホルダ
ーの長孔を通して前記測光装置支持部に枢着された測光
素子の位置調整用の偏心ピンを備え、前記調整用偏心ピ
ンの軸部には、該軸部と偏心した偏心円板部を形成する
と共に、該軸部の途中に小径部を形成し、該小径部の先
端部に該小径部より大径の先端係止部を形成し、 前記測
光装置支持部には、前記調整用偏心ピンの挿通孔を形成
すると共に、該挿通孔に前記調整用偏心ピンの先端係止
部より小径の小径部を形成し、 前記調整用偏心ピンの軸
部を前記測光装置支持部の挿通孔に挿入して、該軸部の
先端係止部を前記挿通孔の小径部に圧入し、該先端係止
部を前記挿通孔のから突出させて該挿通孔の外側面部に
係止させると共に、前記偏心円板部を前記測光素子ホル
ダーの長孔に係入し、前記調整用偏心ピンを該軸部を中
心に回転させることにより、前記測光素子ホルダーが変
位可能となるように構成したことを特徴とする。また本
考案の第２の手段は、前記押え板に、前記集光レンズの
上方を覆う遮光用のフランジ部を形成したことを特徴と
する。According to a first aspect of the present invention, there is provided a photometric element holder provided with a photometric element and having an elongated hole for inserting an adjusting eccentric pin. A photometric device support for holding a photometric condensing lens and mounting the photometric device holder; and a press for abutting the photometric device holder against the photometric device support and elastically clamping them. comprising a plate and, an eccentric pin for adjusting the position of the photometric device pivotally connected to the support portion has been photometric device through the elongated hole of the photometric element holder, the adjustment eccentric pin
An eccentric disk portion eccentric to the shaft portion is formed on the shaft portion of the
At the same time, a small diameter portion is formed in the middle of the shaft portion, and the tip of the small diameter portion is formed.
The diameter of the tip engaging portion than the small-diameter portion is formed in an end portion, said measurement
An insertion hole for the eccentric pin for adjustment is formed in the optical device support portion.
And the tip of the adjusting eccentric pin is locked in the insertion hole.
Forming a small diameter portion smaller in diameter than the portion, the shaft of the adjusting eccentric pin
Part into the insertion hole of the photometric device support part,
Press the front end locking portion into the small diameter portion of the insertion hole,
Part is projected from the insertion hole, and the outer surface of the insertion hole is
And the eccentric disk portion is held in the photometric element holder.
The photometric element holder is configured to be displaceable by engaging the adjusting eccentric pin about the shaft portion by engaging with the slot of the dowel . The second means of the present invention is characterized in that a light-shielding flange portion that covers the upper part of the condenser lens is formed on the holding plate.
【００１０】[0010]
【実施例】以下、本考案の実施例を図７に示した一眼レ
フカメラの露光検出用の測光装置に適用した場合を例に
とって説明する。図１は本考案の実施例を示す組立分解
斜視図、図２は組立後の斜視図、図３は本考案の測光装
置の背面図、図４は図３のＡ−Ａ方向断面図、図５はＢ
−Ｂ方向断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to an example in which the present invention is applied to a photometric device for detecting the exposure of a single-lens reflex camera shown in FIG. FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view after assembling, FIG. 3 is a rear view of the photometric device of the present invention, FIG. 5 is B
It is sectional drawing in the -B direction.
【００１１】これらの図面において、１はカメラボティ
内のメインミラ−の上方に設けられるプリズムシ−トで
ある。このプリズムシ−ト１は図６に示すように枠状と
なっており、下部にピント板２（図４参照）が配置さ
れ、上部にペンタプリズム３が配置される。またプリズ
ムシ−ト１の後面部には窓孔４が開口されており、該窓
孔４の後部に図４に示すような接眼レンズ枠５が配置さ
れ、その接眼レンズ枠５に接眼レンズ６が装着されてい
る。In these drawings, reference numeral 1 denotes a prism sheet provided above a main mirror in a camera body. The prism sheet 1 has a frame shape as shown in FIG. 6, a focus plate 2 (see FIG. 4) is arranged at a lower part, and a pentaprism 3 is arranged at an upper part. A window hole 4 is opened in the rear surface of the prism sheet 1, and an eyepiece lens frame 5 as shown in FIG. 4 is disposed at the rear of the window hole 4, and an eyepiece lens 6 is provided in the eyepiece lens frame 5. It is installed.
【００１２】前記プリズムシ−ト１の窓孔４の上部には
測光装置支持部９が形成されており、該支持部９に測光
装置５０を構成する集光レンズ１０と測光素子１１が固
定される。集光レンズ１０は左右両側に支持脚１０ａ，
１０ａが固定されており、前記支持部９のペンタプリズ
ム寄りに形成された支持溝１２，１２に該支持脚１０
ａ，１０ａが挿入され、弾性変形可能の弾性壁１２ａ，
１２ａにより押圧されるようになっている。この集光レ
ンズ１０は、支持溝１２に装着する際、ピント板２の所
定位置を測光できるように、ファインダ−光軸Ｏ1 に対
して所定の角度をなす測光光軸Ｏ2 上に位置するように
調整される（実願平２−９４５２３号参照）。A photometric device support portion 9 is formed above the window hole 4 of the prism sheet 1, and a condensing lens 10 and a photometric element 11 constituting a photometric device 50 are fixed to the support portion 9. . The condenser lens 10 has support legs 10a on both left and right sides.
10a are fixed, and the support legs 10 are inserted into support grooves 12, 12 formed near the pentaprism of the support portion 9.
a, 10a are inserted, and elastically deformable elastic walls 12a,
12a. The condenser lens 10 is when mounted on a support groove 12, to allow metering a predetermined position of the focusing plate 2, a viewfinder - located on the photometry optical axis O 2 of a predetermined angle with respect to the optical axis O 1 (See Japanese Utility Model Application No. 2-94523).
【００１３】前記測光装置支持部９の後壁１３には、図
１に示すごとく測光素子挿入用の凹部１４が形成され、
その凹部１４における集光レンズ１０の後面部に対応す
る位置には切欠部１５が開口されている。また後壁１３
の左右両側端部には後述する調整用偏心ピン４０の挿通
孔１６，１６が穿設され、後壁上面部の左右両側部には
ボス１７，１７が突設されている。A recess 14 for inserting a photometric element is formed in the rear wall 13 of the photometric device support 9 as shown in FIG.
A cutout 15 is opened at a position corresponding to the rear surface of the condenser lens 10 in the recess 14. The back wall 13
Insertion holes 16, 16 for adjusting eccentric pins 40, which will be described later, are formed at both left and right end portions, and bosses 17, 17 project from left and right side portions of the upper surface of the rear wall.
【００１４】前記後壁１３の後面部１３ａ及び前記切欠
部１５の後面部１５ａは、図４及び図５に示すように傾
斜面となっており、測光素子１１が前記測光光軸Ｏ1 に
対して所定の角度に傾くようになっている。また、図示
しないが後壁１３の後面部１３ａには固定ネジ４７のネ
ジ穴が形成されている。[0014] surface 15a after the surface portion 13a and the notch 15 after the rear wall 13 is an inclined surface as shown in FIGS. 4 and 5, the photometric element 11 relative to the photometric optical axis O 1 To tilt at a predetermined angle. Although not shown, a screw hole for a fixing screw 47 is formed in the rear surface portion 13a of the rear wall 13.
【００１５】測光素子１１は、プリント基板である測光
素子ホルダ−２０に一体的に設けられている。即ち、図
４に示すように測光素子１１は、保護枠２５の内部に備
えられており、測光素子１１の前面は防湿プラスチック
２６で覆われている。また該防湿プラスチック２６の前
面には、視感度補正フィルタ２７が挿入されている。な
お保護枠２５は、防湿プラスチック２６を充填する際の
流れ止めとしての機能をもっている。The photometric element 11 is provided integrally with a photometric element holder 20, which is a printed circuit board. That is, as shown in FIG. 4, the photometric element 11 is provided inside the protective frame 25, and the front surface of the photometric element 11 is covered with the moisture-proof plastic 26. A visibility correction filter 27 is inserted in the front of the moisture-proof plastic 26. The protection frame 25 has a function as a flow stop when the moisture-proof plastic 26 is filled.
【００１６】測光素子ホルダ−２０には、測光素子１１
の両側部に基板長さ方向に伸びる長孔２１，２１が開口
されており、一方の長孔２１の近くには固定ネジ４７の
挿通孔２２が開口されている。また測光素子ホルダ−２
０の一端部には左右方向調整用の穴２３が開口されてお
り、この穴２３に対応して前記プリズムシ−ト１にも調
整用穴２３ａが形成されている。The photometric element holder 20 has a photometric element 11
On both sides, elongated holes 21 and 21 extending in the substrate length direction are opened, and near one elongated hole 21, an insertion hole 22 for a fixing screw 47 is opened. Also, the photometric element holder-2
A hole 23 for adjustment in the left-right direction is opened at one end of 0, and an adjustment hole 23a is formed in the prism sheet 1 corresponding to the hole 23.
【００１７】ホルダ−押え板３０は全体が帽冠形状とな
っており、後部両側部には舌片状のバネ部３１が形成さ
れ、前端部には前記集光レンズ１０の上方近くを覆うよ
うに延出した遮光用フランジ部３４が形成されている。
また前記バネ部３１には、前記測光素子ホルダ−の長孔
２１，２１と対応させて調整用偏心ピン４０の頭部４５
が挿入する挿通孔３２，３２が形成されており、ホルダ
−押え板３０の上面部には、前記後壁１３のボス１７，
１７と対応して係入孔３３ａ，３３ｂが形成されてい
る。なお、一方の係入孔３３ａは長孔となっている。The holder-holding plate 30 has a hat-cap shape as a whole, and a tongue-shaped spring portion 31 is formed on both sides of the rear portion. A light-shielding flange portion 34 is formed.
The spring part 31 has a head 45 of the adjusting eccentric pin 40 corresponding to the long holes 21 and 21 of the photometric element holder.
Are formed in the upper surface of the holder-pressing plate 30, and the bosses 17 and
Engagement holes 33a and 33b are formed in correspondence with 17. Note that one of the engagement holes 33a is a long hole.
【００１８】調整用偏心ピン４０は、それぞれ頭部４５
付近に軸部４１と偏心させて偏心円板部４４が形成され
ている。この偏心円板部４４は前記測光素子ホルダー２
０の長孔２１に係入するようになっており、その肉厚は
長孔２１とほぼ同じである。また軸部４１の途中には小
径部４２が形成されており、その小径部４２の先端部に
は該小径部より大径のテーパー状の先端係止部４３が形
成されている。また前記後壁１３の挿通孔１６には図５
に示すように前記調整用偏心ピン４０の先端係止部４３
より小径の小径孔１６ａが形成されており、調整用偏心
ピン４０を挿通孔１６に挿入し、先端係止部４３を挿通
孔小径部１６ａに圧入することにより、先端係止部４３
は挿通孔１６から突出し挿通孔１６の外側面部に係止さ
れる。これにより調整用偏心ピン４０は挿通孔１６から
抜け出さないようになっている。 Each of the adjusting eccentric pins 40 has a head 45
An eccentric disk portion 44 is formed near the shaft portion 41 so as to be eccentric. The eccentric disk portion 44 is provided with the photometric element holder 2.
0 is inserted into the long hole 21, and its thickness is almost the same as the long hole 21. In the middle of the shaft 41, a small
A diameter portion 42 is formed, and at the tip of the small diameter portion 42.
Is a tapered tip locking portion 43 having a larger diameter than the small diameter portion.
Has been established. The insertion hole 16 in the rear wall 13 is shown in FIG.
As shown in FIG.
A smaller diameter hole 16a is formed, and the eccentricity for adjustment is formed.
Insert the pin 40 into the insertion hole 16 and insert the tip locking portion 43
By press-fitting into the hole small diameter portion 16a, the distal end locking portion 43 is formed.
Protrudes from the insertion hole 16 and is locked on the outer surface of the insertion hole 16.
It is. As a result, the adjustment eccentric pin 40 is inserted through the insertion hole 16.
It does not get out.
【００１９】その他、図４において２８はファインダ−
部を覆うカメラボディの上飾、８は接眼レンズ６にノイ
ズ光が入射するのを防ぐための光束制限部材、７は接眼
レンズ押え板であって前記光束制限部材８と共に接眼レ
ンズ６を接眼レンズ枠５内に押圧しているものである。In FIG. 4, reference numeral 28 denotes a finder.
The upper part of the camera body covering the portion, 8 is a light beam restricting member for preventing noise light from entering the eyepiece 6, and 7 is an eyepiece pressing plate, and the eyepiece 6 is connected to the eyepiece together with the light beam restricting member 8. It is pressed into the frame 5.
【００２０】次に、上述した測光装置５０をプリズムシ
−ト１の測光装置支持部９に取り付けるための手順を説
明する。まず図６に示すように、支持溝１２に集光レン
ズ１０の支持脚１０ａ，１０ａを圧入し、集光レンズ１
０の中心が測光光軸Ｏ2 上に位置するように位置決めす
る。Next, a procedure for attaching the photometric device 50 to the photometric device support portion 9 of the prism sheet 1 will be described. First, as shown in FIG. 6, the support legs 10a, 10a of the condenser lens 10 are pressed into the support grooves 12, and
Center 0 is positioned so as to be located on the photometry optical axis O 2.
【００２１】その後、調整用偏心ピン４０，４０を測光
素子ホルダ−２０の長孔２１，２１から後壁１３の挿通
孔１６，１６に挿入し、ついで偏心円板部４４に測光素
子ホルダ−２０の長孔２１，２１が係入するように該測
光素子ホルダ−２０を測光装置支持部９の後壁１３の後
面部１３ａに当接し、測光素子１１の保護枠２５を後壁
凹部１４に挿入する。Thereafter, the adjusting eccentric pins 40, 40 are inserted from the oblong holes 21, 21 of the photometric element holder 20 into the insertion holes 16, 16 of the rear wall 13, and then the photometric element holder 20 is inserted into the eccentric disk portion 44. The photometric element holder 20 is brought into contact with the rear surface 13a of the rear wall 13 of the photometric device support 9 so that the long holes 21 and 21 are engaged, and the protective frame 25 of the photometric element 11 is inserted into the rear wall recess 14. I do.
【００２２】続いて、前記測光素子ホルダ−２０と、後
壁前面１３ｂ，１３ｂを挟むようにして支持部９にホル
ダ−押え板３０を被冠し、その押え板３０の係入孔３３
ａ，３３ｂを後壁上面のボス１７，１７に係入する。こ
の場合、長孔の係入孔３３ａ側から係入すると押え板３
０を長さ方向に微動させることができるため、他方の係
入孔３３ｂのボス１７への係入が容易になる。これによ
り、測光素子ホルダ−２０はホルダ−押え板３０のバネ
部３１，３１によって、後壁１３の後面部１３ａに押圧
された状態となる。なお、この状態でバネ部３１，３１
の貫通孔３２からは調整用偏心ピン４０，４０の頭部４
５，４５が露出することになる。Subsequently, the holder-holding plate 30 is covered on the support portion 9 so as to sandwich the photometric element holder 20 and the rear wall front surfaces 13b, 13b, and an engaging hole 33 of the holding plate 30 is provided.
a, 33b are engaged with the bosses 17, 17 on the upper surface of the rear wall. In this case, when the retaining plate 3 is engaged from the entrance hole 33a of the elongated hole,
0 can be finely moved in the length direction, so that the other engagement hole 33b can be easily engaged with the boss 17. As a result, the photometric element holder 20 is pressed against the rear surface portion 13a of the rear wall 13 by the spring portions 31 of the holder-holding plate 30. In this state, the spring portions 31, 31
The head 4 of the adjusting eccentric pin 40
5, 45 will be exposed.
【００２３】その後、固定ネジ４７を測光素子ホルダ−
２０の挿通孔２２から挿入し、後壁１３のネジ穴に螺入
して仮止めしておく。Thereafter, the fixing screw 47 is connected to the photometric element holder.
20 and is screwed into the screw hole of the rear wall 13 and temporarily fixed.
【００２４】この状態で調整用偏心ピン４０，４０の頭
部４５，４５をドライバ−等で回転させると、、偏心円
板部４４，４４が偏心回転することによって測光素子ホ
ルダ−２０の長孔２１，２１と干渉し、測光素子ホルダ
−２０が上下方向に変位することになる。In this state, when the heads 45, 45 of the adjusting eccentric pins 40, 40 are rotated by a driver or the like, the eccentric disks 44, 44 are eccentrically rotated, so that the oblong hole of the photometric element holder 20 is formed. 21 and 21, and the photometric element holder 20 is displaced in the vertical direction.
【００２５】このようにして左右の調整用偏心ピン４
０，４０を回転させることにより、測光素子ホルダ−２
０の上下位置を調節し、測光素子１１の左右方向の傾き
の調整を行う。また図３に示したカニメ調整治具６０の
軸部６０ａ，６０ａを前記左右調整用穴２３，２３ａに
挿入し、プリズムシ−ト側の調整用穴２３ａを中心にし
て調整治具６０を左右方向に回し、測光素子ホルダ−２
０の左右方向の調整を行う（実願平２−１１７１２４号
参照）。これらの調整作業を終了した後、前記固定ネジ
４７を締め付け、測光素子ホルダ−２０を後壁１３に固
定する。Thus, the left and right adjusting eccentric pins 4
By rotating 0, 40, the photometric element holder-2
The vertical position of 0 is adjusted, and the inclination of the photometric element 11 in the left-right direction is adjusted. Further, the shaft portions 60a, 60a of the crimper adjusting jig 60 shown in FIG. 3 are inserted into the left and right adjusting holes 23, 23a, and the adjusting jig 60 is moved right and left around the adjusting hole 23a on the prism sheet side. Turn to the photometric element holder-2
0 is adjusted in the left-right direction (see Japanese Utility Model Application No. 2-117124). After these adjustment operations are completed, the fixing screw 47 is tightened to fix the photometric element holder 20 to the rear wall 13.
【００２６】上記した実施例は本考案の一例であり、例
えば、ホルダ−押え板３０のバネ力によって測光素子ホ
ルダ−２０を後壁１３に確実に固定できれば、固定ネジ
４７は省略してもよい。また、上記実施例はＣＯＢタイ
プの測光素子の位置調整機構に本考案を適用したもので
あるが、測光素子を別に作った基板上に固定するタイプ
の測光装置についても適用することができる。さらに本
考案は、ＴＴＬ自動発光ストロボ用検出部１１３の測光
素子に使用しても同様の効果が得られる。その他、測光
素子支持部９，測光素子ホルダ−２０、押え板３０等の
細部の構成は図示した構成に限定されるものでなく、必
要に応じて任意に変更可能である。The above embodiment is an example of the present invention. For example, if the photometric element holder 20 can be securely fixed to the rear wall 13 by the spring force of the holder-holding plate 30, the fixing screw 47 may be omitted. . In the above embodiment, the present invention is applied to the position adjusting mechanism of the COB type photometric element. However, the present invention can also be applied to a type of photometric device in which the photometric element is fixed on a separately formed substrate. Furthermore, the same effect can be obtained by using the present invention for the photometric element of the TTL automatic light emission strobe detection unit 113. In addition, the detailed configurations of the photometric element support 9, the photometric element holder 20, the holding plate 30, and the like are not limited to the illustrated configurations, and can be arbitrarily changed as needed.
【００２７】[0027]
【考案の効果】上述した本考案によれば、組み立てに際
し、調整用偏心ピンを測光素子ホルダーの長孔を通して
測光装置支持部に枢着し、バネ性を有する押え板により
測光素子ホルダーを測光装置支持部材に取り付けるだけ
であるから、組み立て作業が簡単である。また調整用偏
心ピンは、測光装置支持部に軸支される軸部と、該軸部
と偏心した偏心円板部からなっており、この偏心円板部
を測光素子ホルダーの長孔と係入させる構成であるた
め、調整用偏心ピンの構成が簡単であり、測光素子ホル
ダーにも長孔を形成するだけであるから、安価に製造で
きる。しかも調整偏心ピン軸部を測光装置支持部の挿通
孔に挿入した場合、該軸部の先端係止部が挿入孔の小径
部に圧入され、前記挿通孔から突出して該挿通孔の外側
面部に係止される。このため調整偏心ピンが該挿通孔か
ら抜け出なくなり、組立作業性が向上する。また調整偏
心ピンは軸方向に移動せず、偏心円板部が測光素子ホル
ダーの長孔から抜け出ることがないため、調整偏心ピン
の回転による測光素子の調整作業が安定する。 さらに調
整用偏心ピンの軸部は測光装置支持部の枢着部を中心に
して、定位置で回転し、測光素子ホルダーだけが変位す
るため、偏心調整作業を簡易に行うことができる。さら
にまた押え板に遮光用のフランジ部を形成したことによ
り、集光レンズの上方を覆う遮光部材を新たに準備する
必要がなく、部品点数が削減され、コストが低減する。According to the present invention described above, during assembly, the adjusting eccentric pin is pivotally attached to the photometric device support through the long hole of the photometric device holder, and the photometric device holder is attached to the photometric device holder by a spring-like holding plate. Since it is only attached to the support member, the assembling work is simple. The adjusting eccentric pin includes a shaft portion that is supported by the photometric device support portion and an eccentric disk portion eccentric to the shaft portion. The eccentric disk portion engages with the long hole of the photometric element holder. With this configuration, the configuration of the eccentric pin for adjustment is simple, and since only a long hole is formed in the photometric element holder, it can be manufactured at low cost. In addition, the adjustment eccentric pin shaft is inserted through the photometric device support.
When inserted into the hole, the tip end locking portion of the shaft portion has a small diameter of the insertion hole.
Press-fit into the portion, protruding from the insertion hole and outside the insertion hole
Locked to the surface. Therefore, if the adjustment eccentric pin is
As a result, the assembly workability is improved. Adjustment bias
The center pin does not move in the axial direction, and the eccentric disk
Eccentric pin
The adjustment work of the photometric element by the rotation of is stabilized. In addition, the shaft of the eccentric pin for adjustment rotates at a fixed position around the pivotal portion of the photometric device support, and only the photometric element holder is displaced. Can be. Further
Further, since the light-shielding flange portion is formed on the holding plate, it is not necessary to newly prepare a light-shielding member that covers the upper part of the condenser lens, so that the number of parts is reduced and the cost is reduced.
【図１】本考案の実施例を示す測光装置の組立分解斜視
図である。FIG. 1 is an exploded perspective view of a photometric device showing an embodiment of the present invention.
【図２】本考案の実施例を示す測光装置の組立後の斜視
図である。FIG. 2 is a perspective view of the photometric device according to the embodiment of the present invention after assembly.
【図３】本考案の実施例を示す測光装置の背面図であ
る。FIG. 3 is a rear view of the photometric device showing the embodiment of the present invention.
【図４】図３のＡ−Ａ線に沿う断面図である。FIG. 4 is a sectional view taken along line AA of FIG. 3;
【図５】図３のＢ−Ｂ線に沿う断面図である。FIG. 5 is a sectional view taken along the line BB in FIG. 3;
【図６】本考案の測光装置を取り付けるカメラのプリズ
ムシ−トの斜視図である。FIG. 6 is a perspective view of a prism sheet of the camera to which the photometric device of the present invention is attached.
【図７】一般的な一眼レフカメラの内部構成を示した概
略図である。FIG. 7 is a schematic diagram showing an internal configuration of a general single-lens reflex camera.
１ プリズムシ−ト ３ ペンタプリズム ６ 接眼レンズ ９ 測光装置支持部 １０ 集光レンズ １１ 測光素子 １３ 後壁 １４ 測光素子挿入凹部 １５ 切欠部 １７ ボス ２０ 測光素子ホルダ− ２１ 長孔 ２５ 保護枠 ３０ 押え板 ３１ バネ部 ３４ 遮光用フランジ部 ４０ 調整用偏心ピン ４４ 偏心円板部 REFERENCE SIGNS LIST 1 prism sheet 3 pentaprism 6 eyepiece 9 photometric device support 10 condensing lens 11 photometric element 13 rear wall 14 photometric element insertion recess 15 cutout 17 boss 20 photometric element holder 21 long hole 25 protective frame 30 pressing plate 31 Spring part 34 Light-shielding flange part 40 Adjustment eccentric pin 44 Eccentric disk part
Claims (2)
ン挿通用の長孔が形成された測光素子ホルダーと、 測光用の集光レンズを保持し、かつ前記測光素子ホルダ
ーを装着するための測光装置支持部と、 前記測光素子ホルダーを前記測光装置支持部に当接し、
これらを弾性的に挾持するための押え板と、 前記測光素子ホルダーの長孔を通して前記測光装置支持
部に枢着された測光素子の位置調整用の偏心ピンを備
え、前記調整用偏心ピンの軸部には、該軸部と偏心した偏心
円板部を形成すると共に、該軸部の途中に小径部を形成
し、該小径部の先端部に該小径部より大径の先端係止部
を形成し、 前記測光装置支持部には、前記調整用偏心ピンの挿通孔
を形成すると共に、該挿通孔に前記調整用偏心ピンの先
端係止部より小径の小径部を形成し、 前記調整用偏心ピンの軸部を前記測光装置支持部の挿通
孔に挿入して、該軸部の先端係止部を前記挿通孔の小径
部に圧入し、該先端係止部を前記挿通孔から突出させて
該挿通孔の外側面部に係止させると共に、前記偏心円板
部を前記測光素子ホルダーの長孔に係入し、 前記調整用
偏心ピンを該軸部を中心に回転させることにより、前記
測光素子ホルダーが変位可能となるように構成したこと
を特徴とする測光素子の取付構造。1. A photometric element holder provided with a photometric element and having an elongated hole for inserting an eccentric pin for adjustment, and a holder for holding a photometric condenser lens and mounting the photometric element holder. A photometric device support, the photometric element holder abuts on the photometric device support,
A pressure plate for elastically holding these; and an eccentric pin for adjusting the position of the photometric element pivotally attached to the photometric device support through a long hole of the photometric element holder ; The part is eccentric with the shaft part
Form a disk and a small diameter part in the middle of the shaft
And a tip locking portion having a larger diameter than the small diameter portion at a tip portion of the small diameter portion.
Forming a through hole for the adjusting eccentric pin in the photometric device support portion.
And the tip of the adjusting eccentric pin is inserted into the insertion hole.
A small-diameter portion having a smaller diameter than the end locking portion is formed, and a shaft portion of the eccentric adjustment pin is inserted through the photometric device support portion.
Insert the tip end of the shaft into the small diameter of the insertion hole.
Press-fit into the part, and make the tip locking part protrude from the insertion hole.
The eccentric disk is engaged with the outer surface of the insertion hole.
The light measuring element holder is displaceable by rotating the adjusting eccentric pin about the shaft portion by engaging a portion in a long hole of the light measuring element holder. Element mounting structure.
覆う遮光用のフランジ部を形成したことを特徴とする請
求項１に記載の測光素子の取付構造。2. The mounting structure for a photometric element according to claim 1, wherein a light-shielding flange for covering the upper part of the condenser lens is formed on the holding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991013549U JP2573985Y2 (en) | 1991-02-19 | 1991-02-19 | Mounting structure of photometric element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991013549U JP2573985Y2 (en) | 1991-02-19 | 1991-02-19 | Mounting structure of photometric element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04104610U JPH04104610U (en) | 1992-09-09 |
| JP2573985Y2 true JP2573985Y2 (en) | 1998-06-04 |
Family
ID=31747998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991013549U Expired - Fee Related JP2573985Y2 (en) | 1991-02-19 | 1991-02-19 | Mounting structure of photometric element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2573985Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8199369B2 (en) | 2005-11-07 | 2012-06-12 | Ricoh Company, Ltd. | Optical device having fixture structure and used in image reading device and image forming device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6088914A (en) * | 1983-12-16 | 1985-05-18 | Ricoh Co Ltd | Lens position adjusting and fixing device of optical equipment |
| JPS6133132A (en) * | 1984-07-25 | 1986-02-17 | Asahi Chem Ind Co Ltd | Method for hydrogenating olefin |
| JPS62115935A (en) * | 1985-10-03 | 1987-05-27 | Mitsubishi Electric Corp | Transmission controller |
-
1991
- 1991-02-19 JP JP1991013549U patent/JP2573985Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8199369B2 (en) | 2005-11-07 | 2012-06-12 | Ricoh Company, Ltd. | Optical device having fixture structure and used in image reading device and image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04104610U (en) | 1992-09-09 |
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