JPS6345543U - - Google Patents
Info
- Publication number
- JPS6345543U JPS6345543U JP13992986U JP13992986U JPS6345543U JP S6345543 U JPS6345543 U JP S6345543U JP 13992986 U JP13992986 U JP 13992986U JP 13992986 U JP13992986 U JP 13992986U JP S6345543 U JPS6345543 U JP S6345543U
- Authority
- JP
- Japan
- Prior art keywords
- viewfinder
- driving force
- focal length
- force transmission
- optical system
- 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 description 11
- 230000005540 biological transmission Effects 0.000 claims description 4
Landscapes
- Viewfinders (AREA)
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
Description
第１図は、本考案の一実施例を示す２焦点切換
レンズ用光学フアインダ装置の断面図、第２図は
、上記第１図の光学フアインダ装置の斜視図であ
る。
Ｏ１……撮影レンズ光軸、Ｏ２……フアインダ
光軸、２……カム筒（焦点距離切換部材）、２ｂ
……かさ歯車、３７……傘歯車（駆動力伝達部材
）、ＦＬ６，ＦＬ７……変倍フアインダ用光学系
。
FIG. 1 is a sectional view of an optical finder device for a bifocal switching lens showing an embodiment of the present invention, and FIG. 2 is a perspective view of the optical finder device shown in FIG. 1. O 1 ...Photographing lens optical axis, O 2 ...Finder optical axis, 2 ...Cam tube (focal length switching member), 2b
...Bevel gear, 37...Bevel gear (driving force transmission member), FL6, FL7...Optical system for variable magnification viewfinder.
Claims (1)
点を切り換える焦点距離切換部材と、 この焦点距離切換部材と連動して回転する駆動
力伝達部材と、 フアインダ光学系中に配設されていて、上記駆
動力伝達部材によつてフアインダ光軸と直角な軸
の周りに回動変位する変倍フアインダ用光学系と
を具備し、 焦点距離切換部材の焦点距離切換操作に連動す
る上記駆動力伝達部材を介して変倍フアインダ用
光学系を、１８０°回動させて撮影レンズの焦点
距離に対応したフアインダ画角をなすようにした
ことを特徴とする２焦点切換レンズ用光学フアイ
ンダ装置。[Scope of Claim for Utility Model Registration] A focal length switching member that rotates around the optical axis of a photographic lens to switch between a long focus and a short focus, a driving force transmission member that rotates in conjunction with the focal length switching member, and a viewfinder. a variable magnification viewfinder optical system disposed in the optical system and rotationally displaced around an axis perpendicular to the viewfinder optical axis by the driving force transmission member; A bifocal lens characterized in that the variable magnification viewfinder optical system is rotated by 180° via the driving force transmission member linked to the switching operation to form a viewfinder angle of view corresponding to the focal length of the photographic lens. Optical finder device for switching lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13992986U JPS6345543U (en) | 1986-09-10 | 1986-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13992986U JPS6345543U (en) | 1986-09-10 | 1986-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6345543U true JPS6345543U (en) | 1988-03-28 |
Family
ID=31046295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13992986U Pending JPS6345543U (en) | 1986-09-10 | 1986-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6345543U (en) |
-
1986
- 1986-09-10 JP JP13992986U patent/JPS6345543U/ja active Pending
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