JPS6326832U

JPS6326832U -

Info

Publication number: JPS6326832U
Application number: JP12018386U
Authority: JP
Priority date: 1986-08-04
Filing date: 1986-08-04
Publication date: 1988-02-22

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案の一実施例を示す一
部破断斜視図で、第１図は撮影レンズ鏡筒が移動
端まで繰り込まれた沈胴位置に置かれた状態、第
２図は撮影レンズ鏡筒が広角位置まで繰り出され
た状態、第３図は撮影レンズ鏡筒が望遠位置まで
繰り出された状態を示し、第４図はレンズバリア
が閉成されている状態を示すレンズバリア開閉機
構の平面図、第５図はレンズバリアが開成されて
いる状態を示すレンズバリア開閉機構の平面図、
第６図は、主レンズ系の撮影光軸上の位置と、副
レンズ系およびレンズバリアの状態との関係を示
す説明図である。（主要部分の符号の説明）、Ｌ_１……主レンズ
系（撮影光学系）、Ｌ_２……副レンズ系（撮影光
学系）、１……カメラ本体、３……操作部材（切
換え操作手段）、５……撮影レンズ鏡筒、７……
レンズバリア、｛１３……回転リング、１４……
引張コイルばね、１５……腕、１５Ａ……傾斜カ
ム面、１６……係合突起｝（バリア開閉手段）。 Figures 1 to 3 are partially cutaway perspective views showing an embodiment of the present invention, in which Figure 1 shows the photographic lens barrel in the retracted position and Figure 2 shows the photographic lens barrel in the retracted position. Figure 3 shows the photographic lens barrel extended to the wide-angle position, Figure 4 shows the lens barrel extended to the telephoto position, and Figure 4 shows the lens barrier closed. A plan view of the opening/closing mechanism; FIG. 5 is a plan view of the lens barrier opening/closing mechanism showing a state in which the lens barrier is opened;
FIG. 6 is an explanatory diagram showing the relationship between the position of the main lens system on the photographing optical axis and the states of the sub lens system and the lens barrier. (Explanation of symbols of main parts), L ₁ ... Main lens system (photographing optical system), L ₂ ... Sub-lens system (photographing optical system), 1 ... Camera body, 3 ... Operation member (switching operation means) ), 5... Photographing lens barrel, 7...
Lens barrier, {13... Rotating ring, 14...
Tension coil spring, 15...arm, 15A...inclined cam surface, 16...engaging protrusion} (barrier opening/closing means).

Claims

[Claims for Utility Model Registration] (1) A photographing optical system capable of converting the focal length, consisting of a main lens system capable of photographing independently and a sub-lens system added according to the movement of the main lens system; In a variable focus camera having a lens barrier capable of shielding the front surface of a main lens system, a photographic lens barrel that supports at least the main lens system and the lens barrier is configured to have a first movement area for focal length conversion; The main lens system can be electrically driven to a second movement area that extends beyond the focus adjustment movement range of the main lens system alone and is further retracted to the film side, and the photographing is performed in the first movement area and the second movement area. A switching operation means that can electrically switch the movement of the lens barrel, and a barrier opening/closing means that opens and closes the lens barrier in conjunction with only the back and forth movement of the photographing lens barrel within the second movement area. A lens barrier opening/closing device for a variable focus camera characterized by: (2) The barrier opening/closing means includes an arm 15 having a cam surface 15A that is inclined with respect to the moving direction of the photographic lens barrel 5, and an engaging member 16 that can engage with the cam surface 15A. Arm 15 and engaging member 1
6 is fixed to the camera body 1 side, and the other is provided on the photographic lens barrel 16 so as to be rotatable about the optical axis. . (3) The switching operation means is a focal length switching switch operation member 3 provided on the camera body, and the photographing lens barrel 5 is operated by a motor M controlled by the operation of the switch operation member 3. A lens barrier opening/closing device for a variable focus camera, characterized in that it is configured to be driven.