JPS6382211U

JPS6382211U -

Info

Publication number: JPS6382211U
Application number: JP17608886U
Authority: JP
Priority date: 1986-11-18
Filing date: 1986-11-18
Publication date: 1988-05-30
Anticipated expiration: 2001-11-18
Also published as: JPH0734406Y2

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示し、第１図はズー
ムレンズ鏡胴の縦断側面図、第２図は同ズームレ
ンズ鏡胴の横断平面図、第３図は同ズームレンズ
鏡胴の分解斜視図、第４図はカム筒の展開図、第
５図は第１移動枠とカム筒を省略した第１図上の
Ａ―Ａ線縮小断面図、第６図は固定枠の部分的な
斜視図、第７図は第１図上のＡ―Ａ線縮小断面図
、第８図は第３図上のＢ―Ｂ線拡大矢視図、第９
図は同図のＣ―Ｃ線拡大矢視図、第１０図は広角
位置から望遠位置に移行した状態を示す上記ズー
ムレンズ鏡胴の縦断側面図である。１１……固定枠、１２……第１移動枠、１３…
…第２移動枠、１３ｃ，１３ｄ……ストツパー杆
、１４……カム筒、１９……回動筒、２２……旋
回杆。 The drawings show an embodiment of the present invention; FIG. 1 is a vertical cross-sectional side view of the zoom lens barrel, FIG. 2 is a cross-sectional plan view of the zoom lens barrel, and FIG. 3 is an exploded perspective view of the zoom lens barrel. Figure 4 is a developed view of the cam cylinder, Figure 5 is a reduced sectional view taken along line A-A in Figure 1 with the first moving frame and cam cylinder omitted, and Figure 6 is a partial perspective view of the fixed frame. Figure 7 is a reduced sectional view taken along the line A--A in Figure 1, Figure 8 is an enlarged sectional view taken along the line B--B in Figure 3, and Figure 9
The figure is an enlarged view taken along the line CC in the same figure, and FIG. 10 is a longitudinal sectional side view of the zoom lens barrel showing a state shifted from a wide-angle position to a telephoto position. 11... fixed frame, 12... first moving frame, 13...
...Second moving frame, 13c, 13d...stopper rod, 14...cam cylinder, 19...rotating cylinder, 22...swivel rod.

Claims

[Scope of utility model registration request]

The first movable frame has a first movable frame and a second movable frame that are guided by a fixed frame and move by different amounts of movement along the optical axis due to the displacement of the cam surface accompanying rotation of the cam cylinder,
A rotary tube supporting a focusing lens as an objective lens is screwed to the movable frame so as to move along the optical axis, and the lens is supported by the rotary tube and the first and second movable frames. In the zoom lens barrel, the zoom lens barrel is configured to optically change magnification by changing the position of the rotating barrel, and a rotating member is provided inside the rotating barrel to project rearward along the optical axis; a stopper member projecting forward along an axis and having a free end positioned in a rotation area of the rotation member as the rotation barrel rotates. A stopper that restricts the movement of the focusing lens.