JP2744334B2 - camera - Google Patents
cameraInfo
- Publication number
- JP2744334B2 JP2744334B2 JP2183168A JP18316890A JP2744334B2 JP 2744334 B2 JP2744334 B2 JP 2744334B2 JP 2183168 A JP2183168 A JP 2183168A JP 18316890 A JP18316890 A JP 18316890A JP 2744334 B2 JP2744334 B2 JP 2744334B2
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- sub
- rib
- light
- receiving plate
- 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
Links
Landscapes
- Focusing (AREA)
- Cameras In General (AREA)
- Automatic Focus Adjustment (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は自動焦点検出装置もしくは測光装置を備えた
カメラに関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera provided with an automatic focus detection device or a photometric device.
［従来の技術］ 従来より、レンズより入射した撮影光をカメラのAFセ
ンサーに導く為のミラー機構がよく知られているが、そ
の内メインミラーを透過してきた光をAFセンサーに光を
導くサブミラーは金属もしくはプラスチックモールドで
構成された受板に接着されている。[Prior Art] Conventionally, a mirror mechanism for guiding photographing light incident from a lens to an AF sensor of a camera is well known. Among them, a sub mirror for guiding light transmitted through a main mirror to the AF sensor. Is adhered to a receiving plate made of metal or plastic mold.
ところでミラー材を切り出したままのサブミラーで
は、サブミラー端面に入射した撮影光でサブミラーの他
の端面が光ってしまい、その光がカメラ内で迷光となっ
てしまう。By the way, in the sub-mirror in which the mirror material is cut out, the other end surface of the sub-mirror is illuminated by photographing light incident on the end surface of the sub-mirror, and the light becomes stray light in the camera.
そして、該迷光が、AFセンサーへのゴーストとなって
AF精度に著しい悪影響を与えていたが、従来は該迷光を
防止する為に、第３図に示すようにサブミラー３の端面
９を黒色に塗り端面からの入射光7aを遮光していた。な
お、７は通常の入射光を表わし、８は反射光を表わす。And the stray light becomes a ghost to the AF sensor
Although this had a significant adverse effect on the AF accuracy, conventionally, in order to prevent the stray light, the end face 9 of the sub-mirror 3 was painted black as shown in FIG. 3 to block the incident light 7a from the end face. Here, 7 represents ordinary incident light, and 8 represents reflected light.
［発明が解決しようとする課題］ ところで、このサブミラー端面のスミ塗りは、スミ塗
りの工数がかかるばかりでなく、塗布した塗料等がミラ
ー面にまわる事が頻繁におこる為、その拭き取りにも工
数がかかっていた。さらに、塗料の乾燥にも時間を要す
等品質管理がむずかしくコストアップの要因を多数含ん
でいた。[Problems to be Solved by the Invention] In addition, the smear coating on the end face of the sub-mirror not only requires man-hours for the smear coating, but also frequently causes the applied paint or the like to spread on the mirror surface. Was hanging. Further, quality control is difficult, such as the time required for drying the paint, and many factors of cost increase are included.
また、サブミラーは受板の平面部に接着している為、
接着の際の位置決めも困難であり、位置決めの工具を必
要としていた。Also, since the sub-mirror is adhered to the flat part of the receiving plate,
Positioning at the time of bonding was also difficult, and required a positioning tool.
［課題を解決するための手段］ そこで、これらの問題点を解決する為、サブミラー受
板に前記サブミラーの端面の少なくとも三方を囲むリブ
を形成し、且つ前記リブの内壁を前記サブミラーの端面
と略同一形状に設定することにより、有害光を遮光する
とともに、サブミラーの位置決めを容易とし組立作業性
を向上ならしめるカメラを提供するものである。Means for Solving the Problems In order to solve these problems, a rib surrounding at least three of the end faces of the sub-mirror is formed on the sub-mirror receiving plate, and the inner wall of the rib is substantially equal to the end face of the sub-mirror. By providing the same shape, it is possible to provide a camera that shields harmful light, facilitates positioning of the submirror, and improves assembling workability.
［実施例］ 第１図は本発明の実施例であり、ミラーユニットの構
成を示したものである。Embodiment FIG. 1 shows an embodiment of the present invention, and shows a configuration of a mirror unit.
図においては１はレンズより入射した撮影光をファイ
ンダー側へ導くメインミラーであり、メインミラー受板
２に固着されている。３はメインミラー１で透過した光
をAFセンサーもしくはAEセンサーに導く為のサブミラー
であり、両面テープ４によりサブミラー受板５に固着さ
れる（尚、固着方法は両面テープに限ったものではな
く、他の接着剤による固着でもかまわない）。該サブミ
ラーユニットは、回転中心のヒンジ穴5a,5bが、メイン
ミラー受板２と一体で形成されているヒンジ軸2aによっ
て軸支されることによって回転可能になる。トグルバネ
６はメインミラー受板２のバネ掛け部2cに係合してお
り、固定端を突起2dに可動端をサブミラー受板の端部5c
に掛けることにより、サブミラーユニットの開閉のバネ
力を与える。In the figure, reference numeral 1 denotes a main mirror that guides photographing light incident from a lens to a finder side, and is fixed to a main mirror receiving plate 2. Reference numeral 3 denotes a sub-mirror for guiding the light transmitted by the main mirror 1 to the AF sensor or the AE sensor, which is fixed to the sub-mirror receiving plate 5 by the double-sided tape 4 (the fixing method is not limited to the double-sided tape. It may be fixed by other adhesives). The sub-mirror unit is rotatable when hinge holes 5 a and 5 b at the center of rotation are supported by a hinge shaft 2 a formed integrally with the main mirror receiving plate 2. The toggle spring 6 is engaged with a spring hook 2c of the main mirror receiving plate 2, and has a fixed end on the protrusion 2d and a movable end on the end 5c of the sub mirror receiving plate.
To give a spring force for opening and closing the sub-mirror unit.
第２図は、サブミラーユニットのＡ−Ａ線断面を示し
たものであり、７は撮影レンズより入射した光、８は該
入射光がサブミラー面で反射され、AFセンサーもしくは
AEセンサーに向かう反射光である。FIG. 2 is a cross-sectional view of the sub-mirror unit taken along the line AA, where 7 is light incident from the photographing lens, 8 is the incident light reflected on the sub-mirror surface, and the AF sensor or
This is reflected light going to the AE sensor.
図のように入射光７のうちサブミラー端面位置に入射
しうる光7aはサブミラー受板５と一体成形されたリブ5e
により遮光され、カメラ内に乱反射する迷光を防止して
いる。As shown in the drawing, of the incident light 7, light 7 a that can be incident on the position of the sub-mirror end face is a rib 5 e integrally formed with the sub-mirror receiving plate 5.
This prevents stray light that is shielded from light and irregularly reflected in the camera.
また、上記リブ5eはサブミラー貼付の際の突き当て面
としてサブミラー３の位置決めを容易にしている。Further, the rib 5e facilitates positioning of the sub mirror 3 as an abutting surface when attaching the sub mirror.
当然であるが、サブミラー受板５自体は黒色塗装もし
くは黒色の材料で成形され、不正な反応を防ぐようにし
ている。As a matter of course, the sub-mirror receiving plate 5 itself is formed of black paint or black material so as to prevent an illegal reaction.
なお、リブ5eの内、辺5e1〜5e3はサブミラー３の端面
の反射を防ぐ為のものであり、第１図から明らかなよう
に、リブの内壁を前記サブミラーの端面と略同一形状に
設定されている。辺5e4は他より若干高くして、ミラア
ップ時のメインミラー受板２の開口2fからのファインダ
ー逆入光による迷光を、該受板２の突部と合成して防ぐ
為のものである。Of the ribs 5e, the side 5e 1 ～5E 3 is intended to prevent the reflection of the end face of the sub-mirror 3, as is clear from Figure 1, the inner wall of the rib to the end face and substantially the same shape of the sub-mirror Is set. Side 5e 4 is slightly higher than the other, the stray light due finder reverse incident light from the main mirror receiving plate 2 of the opening 2f at Miraappu, is intended to prevent by combining the projection of the receiving plate 2.
［発明の効果］ 以上説明したように本発明によれば、サブミラー受板
に前記サブミラーの端面の少なくとも三方を囲むリブを
形成し、且つ前記リブの内壁を前記サブミラーの端面と
略同一形状に設定することにより、サブミラー端面の入
射を遮光でき、スミ塗りの工数が削減できる。[Effects of the Invention] As described above, according to the present invention, a rib that surrounds at least three sides of the end face of the sub mirror is formed on the sub mirror receiving plate, and the inner wall of the rib is set to have substantially the same shape as the end face of the sub mirror. By doing so, the incident light on the end face of the sub-mirror can be shielded, and the number of steps for smear coating can be reduced.
また、本発明によればサブミラーを該リブの一辺ない
し二辺に突き当てる事により位置決めが容易に行なえ、
組立工数を大巾に削減する事ができる。なおAF光速もし
くはAE光速を充分に満足する大きさのサブミラーであれ
ば該リブ内にサブミラーを投げこむだけで良くさらなる
組立工数の削減が可能である。According to the present invention, positioning can be easily performed by abutting the sub-mirror on one or two sides of the rib,
The number of assembly steps can be greatly reduced. In addition, if the sub-mirror is large enough to satisfy the AF light speed or the AE light speed, the sub-mirror can be simply thrown into the rib and the number of assembling steps can be further reduced.
第１図は本発明の実施例のミラーユニット構成を示す斜
視図。 第２図は第１図のサブミラーＡ−Ａ線断面図。 第３図は従来例のサブミラーの断面図。 ３はサブミラー ５はサブミラー受板 5eはリブFIG. 1 is a perspective view showing a configuration of a mirror unit according to an embodiment of the present invention. FIG. 2 is a sectional view taken along the line AA of FIG. 1; FIG. 3 is a sectional view of a conventional submirror. 3 is a sub-mirror 5 is a sub-mirror receiving plate 5e is a rib
Claims (2)
撮影レンズからの入射光をメインミラーを透過させた後
で前記自動焦点検出装置または前記測光装置に導くサブ
ミラーを有するカメラにおいて、 前記サブミラーの保持体であるサブミラー受板に前記サ
ブミラーの端面の少なくとも三方を囲むリブを形成し、
且つ前記リブの内壁を前記サブミラーの端面と略同一形
状に設定することを特徴とするカメラ。An automatic focus detecting device or a photometric device,
In a camera having a sub-mirror for guiding incident light from a taking lens through a main mirror to the automatic focus detection device or the photometric device, at least three sides of an end surface of the sub-mirror are provided on a sub-mirror receiving plate which is a holder of the sub-mirror. Forming a rib surrounding
A camera wherein an inner wall of the rib is set to have substantially the same shape as an end face of the sub-mirror.
ラー接着の際の突き当て面とすることを特徴とする請求
項（１）記載のカメラ。2. The camera according to claim 1, wherein one or two sides of the inner wall of the rib are used as abutment surfaces for sub-mirror bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2183168A JP2744334B2 (en) | 1990-07-10 | 1990-07-10 | camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2183168A JP2744334B2 (en) | 1990-07-10 | 1990-07-10 | camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0469640A JPH0469640A (en) | 1992-03-04 |
| JP2744334B2 true JP2744334B2 (en) | 1998-04-28 |
Family
ID=16130978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2183168A Expired - Lifetime JP2744334B2 (en) | 1990-07-10 | 1990-07-10 | camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2744334B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8620151B2 (en) | 2010-03-12 | 2013-12-31 | Ability Enterprise Co., Ltd. | Photographic and projection module and electronic system having the same |
| EP2560393B1 (en) * | 2011-08-16 | 2018-10-10 | Ricoh Company Ltd. | Image displaying apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6027384Y2 (en) * | 1980-10-13 | 1985-08-19 | 富士写真光機株式会社 | mirror device |
| JPS58123432U (en) * | 1982-02-13 | 1983-08-22 | 株式会社リコー | Mirror drive device for single-lens reflex cameras |
| JPH0236828U (en) * | 1988-09-02 | 1990-03-09 |
-
1990
- 1990-07-10 JP JP2183168A patent/JP2744334B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0469640A (en) | 1992-03-04 |
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