JPS6289623U - - Google Patents
Info
- Publication number
- JPS6289623U JPS6289623U JP1985180994U JP18099485U JPS6289623U JP S6289623 U JPS6289623 U JP S6289623U JP 1985180994 U JP1985180994 U JP 1985180994U JP 18099485 U JP18099485 U JP 18099485U JP S6289623 U JPS6289623 U JP S6289623U
- Authority
- JP
- Japan
- Prior art keywords
- focal length
- changes
- optical path
- receiving element
- light receiving
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims 11
Landscapes
- Exposure Control For Cameras (AREA)
- Diaphragms For Cameras (AREA)
Description
第１図および第２図は本考案によるカメラの一
実施例を示す概略断面図で、第１図は撮影レンズ
の焦点距離が長焦点側に位置している状態を示し
、第２図は撮影レンズの焦点距離が短焦点側に位
置している状態を示している。
１……カバー、２……カメラ本体、３……受光
レンズ、４……支持棒、５……支持棒受け板、６
……支持棒嵌合部材、７……シヤツタＡＦ装置、
８……前群鏡筒、９……後群鏡筒、１０……カム
板、１１……受光素子、１２……反射板。
1 and 2 are schematic cross-sectional views showing one embodiment of the camera according to the present invention. FIG. 1 shows a state in which the focal length of the photographing lens is located on the long focal length side, and FIG. This shows a state in which the focal length of the lens is located on the short focal length side. 1...Cover, 2...Camera body, 3...Light receiving lens, 4...Support rod, 5...Support rod receiving plate, 6
...Support rod fitting member, 7...Shutter AF device,
8... Front group lens barrel, 9... Rear group lens barrel, 10... Cam plate, 11... Light receiving element, 12... Reflector plate.
Claims (1)
は異なる補助光路と、該補助光路によつて導かれ
た被写体光を受光する受光素子と、該受光素子の
出力に応答して露光量を制御する露出制御装置と
、撮影光学系の焦点距離変化に応答して上記補助
光路の長さを変化させ、上記焦点距離変化に伴う
開放Ｆ値の変化に対して上記受光素子に入射する
被写体光量を補正する光路長変更手段とを設けた
ことを特徴とするカメラ。 (2) 上記光路長変更手段は撮影光学系の焦点距
離変化に連動して上記受光素子を移動させる移動
装置を有することを特徴とする実用新案登録請求
の範囲第(1)項記載のカメラ。 (3) 上記撮影光路は被写体光を反射する反射部
材を有することを特徴とする実用新案登録請求の
範囲第(2)項記載のカメラ。 (4) 上記移動装置は、撮影光学系の焦点距離が
長焦点側に変化すると上記受光素子を上記反射部
材から遠ざける方向に移動させ、撮影光学系の焦
点距離が短焦点側に変化すると上記受光素子を上
記反射部材に近づける方向に移動させるように構
成されていることを特徴とする実用新案登録請求
の範囲第(3)項記載のカメラ。[Scope of Claim for Utility Model Registration] (1) An auxiliary optical path different from the photographing optical path for guiding subject light into the camera, a light receiving element that receives the subject light guided by the auxiliary optical path, and the light receiving element an exposure control device that controls the exposure amount in response to the output of the camera; and an exposure control device that changes the length of the auxiliary optical path in response to changes in the focal length of the photographic optical system, and responds to changes in the aperture f-number due to changes in the focal length. and an optical path length changing means for correcting the amount of subject light incident on the light receiving element. (2) The camera according to claim 1, wherein the optical path length changing means includes a moving device that moves the light receiving element in conjunction with changes in the focal length of the photographing optical system. (3) The camera according to claim 2, wherein the photographing optical path includes a reflecting member that reflects subject light. (4) The moving device moves the light receiving element in a direction away from the reflecting member when the focal length of the photographing optical system changes to the long focal length side, and the moving device moves the light receiving element in a direction away from the reflecting member when the focal length of the photographing optical system changes to the short focal length side. 3. The camera according to claim (3), wherein the camera is configured to move the element in a direction closer to the reflecting member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985180994U JPS6289623U (en) | 1985-11-25 | 1985-11-25 | |
| US06/931,809 US4777508A (en) | 1985-11-25 | 1986-11-18 | Exposure control device for camera of variable focal length type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985180994U JPS6289623U (en) | 1985-11-25 | 1985-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6289623U true JPS6289623U (en) | 1987-06-08 |
Family
ID=31125462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985180994U Pending JPS6289623U (en) | 1985-11-25 | 1985-11-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6289623U (en) |
-
1985
- 1985-11-25 JP JP1985180994U patent/JPS6289623U/ja active Pending
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