JPS6011312U - Lens moving device for lens barrel - Google Patents
Lens moving device for lens barrelInfo
- Publication number
- JPS6011312U JPS6011312U JP10342183U JP10342183U JPS6011312U JP S6011312 U JPS6011312 U JP S6011312U JP 10342183 U JP10342183 U JP 10342183U JP 10342183 U JP10342183 U JP 10342183U JP S6011312 U JPS6011312 U JP S6011312U
- Authority
- JP
- Japan
- Prior art keywords
- cam
- cylinder
- lens
- groove width
- small
- 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.)
- Granted
Links
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
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図はその要部の分解斜視図、第４図ａ、 ｂは
それぞれ同じく要部の拡大平面図および拡大横断面図、
第５図ａ、 ｂは本考案の他の実施例の要部の平面図
および横断面図である。
Ｌｌ・・・・・・第１１７１群、Ｌ２・・・・・・第２
レンズ群、Ｌ３・・・・・・第３レンズ群、２１・・・
・・・マウント、２２゜４２・・・・・・固定筒、２２
ａ、４２ａ・・・・・・直進ガイド溝、２３．４３’・
・・・・・第１移動枠、２４・・・・・・第２移動枠、
２５ 、 ４５−−−−−−カム筒、２５ａ、２５ｂ、
４５ａ−・・・・・カム溝、２６・パ・・・・第１保持
枠、２７・・・・・・フォーカス筒、２９・・・・・・
操作部材となるズーム環、３０゜３１．５０・・・・・
・カムフォロアー、３０ａ、５Ｑａ・・・・・・小径部
、３０ｂ、５０ｂ・・・・・・大径部。FIG. 1 is a longitudinal sectional view of a conventional zoom lens barrel, FIG. 2 is a longitudinal sectional view of an embodiment of the zoom lens barrel according to the present invention, and FIG. 3 is an exploded perspective view of the main parts thereof. Figures 4a and 4b are an enlarged plan view and an enlarged cross-sectional view of the main parts, respectively.
FIGS. 5a and 5b are a plan view and a cross-sectional view of main parts of another embodiment of the present invention. Ll...1171st group, L2...2nd
Lens group, L3...Third lens group, 21...
...Mount, 22゜42...Fixed tube, 22
a, 42a... Straight guide groove, 23.43'.
...First moving frame, 24... Second moving frame,
25, 45-----cam cylinder, 25a, 25b,
45a--Cam groove, 26-Pa...First holding frame, 27--Focus cylinder, 29--
Zoom ring that serves as an operating member, 30°31.50...
- Cam follower, 30a, 5Qa...small diameter part, 30b, 50b...large diameter part.
Claims (1)
に移動制御するカム筒と該カム筒を嵌装する固定筒とを
有し、該第ルンズ群移動枠に植設したカムフォロアーを
該固定筒に設けた直進ガイド溝と該カム筒に設けたカム
溝とに嵌入してなるレンズ鏡胴において、前記カムフォ
ロアーを先端側の大径部と小径部からなる２段形状とし
、固定筒の直進ガイド溝幅とカム筒のカム溝幅は該カム
フォロアーの大小径に嵌合するよう内側にある筒体の溝
幅を小、外側にある筒体の溝幅を大としたことを特徴と
するレンズ鏡胴のレンズ移動装置。 ２ カムフォロアーはその外周部を弾性部材により構成
したことを特徴とする実用新案登録の範囲第１項記載の
レンズ鏡胴のレンズ移動装置。 ３ カムフォロアーの大径部と小径部を継ぐ面は固定筒
およびカム筒のいずれか一方の内側となる筒体の外周面
とは微小の空間を有するように形成されていることを特
徴とする実用新案登録請求の範囲第１項又は第２項記載
のレンズ鏡胴のレンズ移動装置。[Claims for Utility Model Registration] 1. A cam cylinder that controls the movement of a moving frame for a first lens group in the optical axis direction by the rotation of an operating member, and a fixed cylinder in which the cam cylinder is fitted; In a lens barrel in which a cam follower implanted in a frame is fitted into a linear guide groove provided in the fixed barrel and a cam groove provided in the cam barrel, the cam follower is inserted into a large diameter portion and a small diameter portion on the tip side. The linear guide groove width of the fixed cylinder and the cam groove width of the cam cylinder are such that the groove width of the inner cylinder is small and the groove width of the outer cylinder is small so that the width of the linear guide groove of the fixed cylinder and the cam groove width of the cam cylinder fit into the large and small diameters of the cam follower. A lens moving device for a lens barrel, characterized by an enlarged groove width. 2. The lens moving device for a lens barrel according to item 1 of the scope of utility model registration, characterized in that the cam follower has an outer peripheral portion made of an elastic member. 3. The surface connecting the large diameter part and the small diameter part of the cam follower is formed so that it has a small space from the outer circumferential surface of the cylinder which is the inside of either the fixed cylinder or the cam cylinder. A lens moving device for a lens barrel according to claim 1 or 2 of the utility model registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10342183U JPS6011312U (en) | 1983-07-05 | 1983-07-05 | Lens moving device for lens barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10342183U JPS6011312U (en) | 1983-07-05 | 1983-07-05 | Lens moving device for lens barrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6011312U true JPS6011312U (en) | 1985-01-25 |
| JPS644082Y2 JPS644082Y2 (en) | 1989-02-02 |
Family
ID=30243313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10342183U Granted JPS6011312U (en) | 1983-07-05 | 1983-07-05 | Lens moving device for lens barrel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6011312U (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311019A (en) * | 1976-07-19 | 1978-02-01 | Minolta Camera Co Ltd | Shift device by means of formed parts |
| JPS5345033U (en) * | 1976-09-21 | 1978-04-17 | ||
| JPS53125017A (en) * | 1977-04-08 | 1978-11-01 | Minolta Camera Co Ltd | Shifting device |
| JPS5529876A (en) * | 1978-08-23 | 1980-03-03 | Hiroshi Mito | Lens barrel |
| JPS55166610A (en) * | 1979-06-13 | 1980-12-25 | Canon Inc | Cam mechanism of zoom lens |
| JPS5658606U (en) * | 1979-10-09 | 1981-05-20 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5276788A (en) * | 1975-12-22 | 1977-06-28 | Hitachi Ltd | Machine tool for fabricating helical gear |
-
1983
- 1983-07-05 JP JP10342183U patent/JPS6011312U/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311019A (en) * | 1976-07-19 | 1978-02-01 | Minolta Camera Co Ltd | Shift device by means of formed parts |
| JPS5345033U (en) * | 1976-09-21 | 1978-04-17 | ||
| JPS53125017A (en) * | 1977-04-08 | 1978-11-01 | Minolta Camera Co Ltd | Shifting device |
| JPS5529876A (en) * | 1978-08-23 | 1980-03-03 | Hiroshi Mito | Lens barrel |
| JPS55166610A (en) * | 1979-06-13 | 1980-12-25 | Canon Inc | Cam mechanism of zoom lens |
| JPS5658606U (en) * | 1979-10-09 | 1981-05-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS644082Y2 (en) | 1989-02-02 |
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