JPS60135711U

JPS60135711U - zoom lens

Info

Publication number: JPS60135711U
Application number: JP2407784U
Authority: JP
Inventors: 鎌田　滋
Original assignee: キヤノン株式会社
Priority date: 1984-02-21
Filing date: 1984-02-21
Publication date: 1985-09-09
Also published as: JPH0233204Y2

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 drawings]

第１図は従来例のズームレンズ鏡胴の縦断面図、第２図
は本考案に係るズームレンズ鏡胴の一実施例の縦断面図
、第３図はその要部分解斜視図である。Ｌｌ・・・第ルンズ群、ｈ・・・第２レンズ群、Ｌ・・
・第３レンズ群、１・・・マウント、２・・・固定筒、
５・・・カム筒、２ｂ・・・直進ガイド溝、２ｃ・・・
開口部、５ｂ・・・カム溝、５ｃ・・・面取り部、５ｄ
・・・開口部、４・・・移動筒、４ｂ・・・伸長部、４
ａ・・・カムフォロワー、４ｃ・・・あご部。FIG. 1 is a vertical cross-sectional view of a conventional zoom lens barrel, FIG. 2 is a vertical cross-sectional view of an embodiment of the zoom lens barrel according to the present invention, and FIG. 3 is an exploded perspective view of essential parts thereof. Ll... 1st lens group, h... 2nd lens group, L...
・Third lens group, 1... mount, 2... fixed tube,
5...Cam cylinder, 2b...straight guide groove, 2c...
Opening portion, 5b... cam groove, 5c... chamfered portion, 5d
...Opening part, 4...Moving tube, 4b...Extension part, 4
a...Cam follower, 4c...chin part.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

（１）直進溝を有する固定筒と、前記直進溝と交鎖する
カム溝を有するカム筒と、前記直進溝とカム溝の交点に
嵌合するカムフォロワーをレンズのレンズ枠に取り付け
たズームレンズにおいて、前記直進溝又はカム溝の側面
にテーパー面を設け、前記カラフォロワーの上部周囲に
前記テーパー面と摺接するテーパ一部を設けたことを特
徴とするズームレンズのレンズ移動機構。(1) A zoom lens in which a fixed barrel having a straight groove, a cam barrel having a cam groove that intersects with the straight groove, and a cam follower that fits at the intersection of the straight groove and the cam groove are attached to the lens frame of the lens. A lens moving mechanism for a zoom lens, characterized in that a tapered surface is provided on a side surface of the linear groove or the cam groove, and a portion of the taper that slides into contact with the tapered surface is provided around the upper part of the color follower.

（２）　　前記カムフォロワーを可動レンズのレンズ枠
と一体に成形加工し、前記直進溝とカム溝の一端側に前
記カムフォロワーの前記テーパ一部を−挿通する開口部
を設けたことを特徴とする実用新案登録請求の範囲第（
１）項記載のズームレンズのレンズ移動装置。(2) The cam follower is molded integrally with the lens frame of the movable lens, and an opening is provided at one end side of the linear groove and the cam groove, through which the tapered part of the cam follower is inserted. Scope of claim for utility model registration (
1) A lens moving device for a zoom lens according to item 1).