JPS6074114U - zoom lens barrel - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の実施例の半断面側面図。第２図はそ
の部分的分解斜視図。第３図は直線みぞとカムみぞとの
交差状態を示すカム筒の展開図。 第４図は従来の調整手段の一例を示す斜視図。 図中、１・・・固定筒、１ａ・・・外筒、１ｂ・・・内
筒、２ａ・・・透孔、２ｂ・・・雄ねじ、２ｃ、２ｄ・
・・直線みぞ、３・・・カム筒、３ａ、３ｂ・・・カム
みぞ、４・・・第１移動レンズ枠、４ａ・・・ピン、５
・・・第２移動レンズ枠、５ａ・・・ピン、６・・・ズ
ーム操作環、６ｂ・・・環状みぞ、６′・・・目盛環、
６ｅ’・・・光軸方向みぞ、７・・・外装環。FIG. 1 is a half-sectional side view of an embodiment of this invention. FIG. 2 is a partially exploded perspective view. FIG. 3 is a developed view of the cam cylinder showing the intersection of the straight groove and the cam groove. FIG. 4 is a perspective view showing an example of a conventional adjustment means. In the figure, 1...Fixed tube, 1a...Outer tube, 1b...Inner tube, 2a...Through hole, 2b...Male thread, 2c, 2d...
... Straight line groove, 3... Cam tube, 3a, 3b... Cam groove, 4... First movable lens frame, 4a... Pin, 5
...Second movable lens frame, 5a...pin, 6...zoom operation ring, 6b...annular groove, 6'...scale ring,
6e'... Optical axis direction groove, 7... Exterior ring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 複数の移動レンズ枠を光軸方向に移動させる直線みぞを
有する固定筒内筒１ｂの外周に、光学系の焦点距離を調
節するための複数のカムみぞ３ａｔ３ｂを備えたカム筒
３を回動するように嵌合する形式のズームレンズにおい
て、カム筒３にはカムみぞ３ａ、３ｂに併せて二つのピ
ン３Ｃ９３ｄを植設し、その一つのピン３ｄを固定筒外
筒１ａに螺合したズーム操作環６の内面に形成した環状
みぞ６ｂに係合し、他のピン３Ｃをズーム操作環６の前
側に所要時に回動できるように取付けた目盛環６′の内
面の光軸方向みぞ６ｅ’に係合さ−せ、ズーム操作環６
と目盛環６′の嵌挿部表面に擬革製の外装環７を被嵌さ
せてなるズームレンズの鏡胴。A cam cylinder 3 having a plurality of cam grooves 3at3b for adjusting the focal length of the optical system is rotated on the outer periphery of a fixed cylinder inner cylinder 1b having linear grooves for moving a plurality of movable lens frames in the optical axis direction. In a zoom lens that fits like this, two pins 3C93d are implanted in the cam barrel 3 along with the cam grooves 3a and 3b, and one of the pins 3d is screwed into the fixed barrel outer barrel 1a for zoom operation. It engages with the annular groove 6b formed on the inner surface of the ring 6, and the other pin 3C is fitted into the optical axis direction groove 6e' on the inner surface of the scale ring 6', which is attached to the front side of the zoom operation ring 6 so as to be rotatable when required. Engage and zoom operation ring 6
A lens barrel of a zoom lens in which an exterior ring 7 made of fake leather is fitted onto the fitting surface of a scale ring 6'.