JPS58195214U - Zoom lens for autofocus camera - Google Patents
Zoom lens for autofocus cameraInfo
- Publication number
- JPS58195214U JPS58195214U JP9475782U JP9475782U JPS58195214U JP S58195214 U JPS58195214 U JP S58195214U JP 9475782 U JP9475782 U JP 9475782U JP 9475782 U JP9475782 U JP 9475782U JP S58195214 U JPS58195214 U JP S58195214U
- Authority
- JP
- Japan
- Prior art keywords
- zoom lens
- amount
- focal length
- speed change
- lens
- 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.)
- Pending
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図は本考案の一実施例を示す構成図、第２図はカム
の演算方法を示す説明図、第３図は本考案の他の実施例
を示す構成図、第４図は本考案のさらに他の実施例を示
す構成図、第５図は本考案のさらに他の実施例を示す構
成図、第６図は本考案の機械的変速手段の他の実施例を
示す構成図、第７図は本考案の機械的変速手段のさらに
他の実施例を示す構成図である。Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2 is an explanatory diagram showing a cam calculation method, Fig. 3 is a block diagram showing another embodiment of the present invention, and Fig. 4 is a block diagram showing the present invention. FIG. 5 is a block diagram showing still another embodiment of the present invention. FIG. 6 is a block diagram showing another embodiment of the mechanical transmission means of the present invention. FIG. 7 is a block diagram showing still another embodiment of the mechanical transmission means of the present invention.
Claims (5)
離だけ、モータによってレンズを繰り出してピント合せ
を行なうようにし元自動焦点カメラのズームレンズにお
いて、 所定形状の案内部を有するカムと、この案内部に摺接す
るピンとを有し、カムの回転に応じてピンが変位するよ
うにしたカム手段と、入力軸に加えられる機械的変位量
をズームレンズの設定焦点距離に対応した比率で凌倍し
てその変倍した変位量を出力軸に与える変速手段と、 を備え、カム手段と変速手段とを結合して機械的演算機
構を構成し、該演算機構の入力側にデフォーカス量を示
す変位量を加え、合焦のためのフォーカスレンズのくり
出し量を示す変位量を該演算機構の出力側からとり出す
ようにしたことを特徴とする自動焦点カメラ用ズームレ
ンズ。(1) A cam that has a guide part of a predetermined shape in a zoom lens of an autofocus camera that uses a motor to extend the lens by the distance between the current position of the focus lens and the in-focus point to perform focusing; The cam means has a pin that slides on the guide part and is displaced in accordance with the rotation of the cam, and the amount of mechanical displacement applied to the input shaft is multiplied by a ratio corresponding to the set focal length of the zoom lens. and a transmission means for applying the magnified displacement amount to an output shaft, the cam means and the transmission means are combined to constitute a mechanical calculation mechanism, and the defocus amount is indicated on the input side of the calculation mechanism. 1. A zoom lens for an autofocus camera, characterized in that the amount of displacement is added and the amount of displacement indicating the amount of extension of the focus lens for focusing is taken out from the output side of the calculation mechanism.
離に応じて接触位置が変更される互いの周面が接触した
２個のかさ型ローラを備えた実用新案登録請求の範囲第
１項に記載のズームレンズ。(2) Utility model registration as set forth in claim 1, wherein the speed change means includes two umbrella-shaped rollers whose circumferential surfaces are in contact with each other and whose contact positions are changed according to the set focal length of the zoom lens. zoom lens.
応じて支点の位置が変更されるでこレバーを備えた実用
新案登録請求の範囲第１項記載のズームレンズ(3) The zoom lens according to claim 1, wherein the speed change means is provided with a lever whose fulcrum position is changed according to the set focal length of the zoom lens.
離に応じて支点の位置が変更されるでこレバーを有する
ベルクランプを備えた実用新案登録請求の範囲第１項に
記載のズームレンズ。(4) The zoom lens according to claim 1, wherein the speed change means includes a bell clamp having a lever whose fulcrum position is changed according to the set focal length of the zoom lens.
応じて張設位置が変更される弾性ベルトが張設されたか
さ型ローラとローラとを備えた実用新案登録請求の範囲
第１項に記載のズームレンズ。(5) The above-mentioned speed change means includes an umbrella-shaped roller and a roller on which an elastic belt is stretched, the tensioning position of which is changed according to the set focal length of the zoom lens, and a roller. Zoom lens listed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9475782U JPS58195214U (en) | 1982-06-23 | 1982-06-23 | Zoom lens for autofocus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9475782U JPS58195214U (en) | 1982-06-23 | 1982-06-23 | Zoom lens for autofocus camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58195214U true JPS58195214U (en) | 1983-12-26 |
Family
ID=30226639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9475782U Pending JPS58195214U (en) | 1982-06-23 | 1982-06-23 | Zoom lens for autofocus camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58195214U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5266445A (en) * | 1975-11-27 | 1977-06-01 | Fuji Photo Optical Co Ltd | Zoom lens |
| JPS5366224A (en) * | 1976-11-25 | 1978-06-13 | Bell & Howell Japan | Autoofocusing system in zoom lens |
| JPS56165107A (en) * | 1980-05-23 | 1981-12-18 | Minolta Camera Co Ltd | Focusing device for zoom lens |
-
1982
- 1982-06-23 JP JP9475782U patent/JPS58195214U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5266445A (en) * | 1975-11-27 | 1977-06-01 | Fuji Photo Optical Co Ltd | Zoom lens |
| JPS5366224A (en) * | 1976-11-25 | 1978-06-13 | Bell & Howell Japan | Autoofocusing system in zoom lens |
| JPS56165107A (en) * | 1980-05-23 | 1981-12-18 | Minolta Camera Co Ltd | Focusing device for zoom lens |
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