JPH03129910U

JPH03129910U -

Info

Publication number: JPH03129910U
Application number: JP12111490U
Authority: JP
Priority date: 1990-02-05
Filing date: 1990-11-19
Publication date: 1991-12-26

Description

[Brief explanation of drawings]

第１図は、本考案によるレンズ鏡筒の実施例の
縦断面図を示しており、第２図、第３図は本実施
例における双安定型ソレノイドを用いたマニユア
ルフオーカス／オートフオーカス切換クラツチの
構造図（第１図のＡ視図）を示し、第２図はマニ
ユアルフオーカス状態、第３図はオートフオーカ
ス状態をそれぞれ示している。第４図はレンズ鏡
筒をカメラ本体に装着してオートフオーカス、マ
ニユアルフオーカスおよびマニユアルフオーカス
優先オートフオーカスの作動を説明するための作
動概略図を示している。第５図は別実施例におけ
るレンズ鏡筒の縦断面図、第６図は駆動モータの
速度の変化を示したグラフをそれぞれ示している
。第７図〜第９図はそれぞれ別実施例の動作の流
れを示すフローチヤートである。第１０図は別実
施例におけるレンズ鏡筒の縦断面図を示し、第１
１図は同じく別実施例の動作の流れを示すフロー
チヤートである。主要部分の符号の説明、１……固定筒、Ｌ２…
…合焦レンズ、４……レンズ駆動部材、７，１７
……検出部、８……双安定型ソレノイド、１１０
……ＣＰＵ、１２……クラツチ部材、１３……操
作環、１４……セグメントギヤ、１５……モータ
。 Fig. 1 shows a vertical cross-sectional view of an embodiment of the lens barrel according to the present invention, and Figs. 2 and 3 show manual focus/autofocus switching using a bistable solenoid in this embodiment. A structural diagram of the clutch (view A in FIG. 1) is shown, FIG. 2 shows a manual focus state, and FIG. 3 shows an auto focus state. FIG. 4 is a schematic diagram illustrating the operations of autofocus, manual focus, and manual focus priority autofocus when the lens barrel is attached to the camera body. FIG. 5 is a longitudinal sectional view of a lens barrel in another embodiment, and FIG. 6 is a graph showing changes in the speed of the drive motor. 7 to 9 are flowcharts showing the flow of operations of different embodiments, respectively. FIG. 10 shows a vertical cross-sectional view of a lens barrel in another embodiment, and the first
FIG. 1 is a flowchart showing the flow of operation of another embodiment. Explanation of symbols of main parts, 1...Fixed tube, L2...
... Focusing lens, 4... Lens driving member, 7, 17
...Detection unit, 8...Bistable solenoid, 110
... CPU, 12 ... clutch member, 13 ... operation ring, 14 ... segment gear, 15 ... motor.

Claims

[Claims for Utility Model Registration] Mode selection operation means that can be externally operated to select a shooting mode and outputs an electrical signal in accordance with the operation; , a setting means for setting either a first mode for manual focus adjustment or a second mode for automatic focus adjustment; a focusing optical system; and a moving means for moving the focusing optical system in the optical axis direction. an operating means that can be externally operated and that can drive the moving means by the operation; a detection means that detects that the operating means has been operated; an electric means for driving the moving means; a mode selection. Depending on the electrical signal from the operating means,
a clutch means movable between a first position where the moving means and the electric power means are connected, and a second position where the coupling is released and the moving means and the operating means are connected; a clutch drive means for electrically displacing the clutch to the first and second positions, respectively; and a control means for controlling the setting means and the clutch drive means, and the control means is configured to control the mode selection operation means. When said first mode is selected by said setting means, said setting means is actuated to set said first mode and said clutch means is displaced to said second position via said clutch driving means; When the second mode is selected by the mode selection operation means, the setting means is actuated to set the second mode, and the clutch means is moved to the first position via the clutch driving means. However, when the detection means detects an operation of the operating means when setting the second mode, the setting means is operated again to switch from the second mode to the first mode and the clutch is driven. A lens barrel characterized in that said clutch means is displaced from said first position to said second position via means.