JPH0219014U

JPH0219014U -

Info

Publication number: JPH0219014U
Application number: JP9384888U
Authority: JP
Priority date: 1988-07-15
Filing date: 1988-07-15
Publication date: 1990-02-08

Description

[Brief explanation of drawings]

各図は本考案の一実施例を示しており、第１図
はレンズ鏡筒の縦断面図、第２図はモード切換リ
ング付近の横断面図、第３図はレンズ鏡筒をカメ
ラと組み合せたものの説明図、第４図はフオーカ
スレンジ制限部の詳細を示す展開図である。Ｌ１，Ｌ２……撮影光学系、Ｌ３……合焦光学
系、１０……レンズ鏡筒、１１……フオーカスプ
リセツトスイツチ、１３……切換用スイツチ、２
０……固定筒、２２……外筒部、２３……内筒部
、２５……超音波モータ、３０……レンズ保持筒
、３２……回転筒、３６……検出手段、３７……
クラツチ部材、３８，３９……中間部材、４０…
…モード切換リング、４１……ロツクばね、４１
ａ……切換ボタン、４２……Ｍモード時、４３…
…ＰＦモード時、４４……ＡＦモード時、４６…
…円周溝、４７ａ……コイルばね、５０……マニ
ユアルフオーカス環、５１……中間リング、５２
……ＰＦ用パルスエンコーダ、５４……クラツチ
ばね、６０……制限検出用パターン、６１……無
限遠側制限設定部材、６２……至近側制限設定部
材、６３……フオーカスレンジ制限解除スイツチ
、１０１……ＣＰＵ、１０２……モータ駆動回路
、１０３……ＰＦパルス処理用ＣＰＵ、１０４…
…リミツト回路、１０５……フオーカスレンジリ
ミツト回路、１１０……カメラ本体、１１２……
合焦制御回路、１１３……測距用光電変換部、１
１４……サブミラー、１１５……半透鏡、１１６
……焦点板、１１７……コンデンサレンズ、１１
８……ペンタプリズム、１１９……フアインダ接
眼レンズ。 Each figure shows an embodiment of the present invention. Figure 1 is a longitudinal cross-sectional view of the lens barrel, Figure 2 is a cross-sectional view of the vicinity of the mode switching ring, and Figure 3 is a combination of the lens barrel and a camera. FIG. 4 is a developed view showing details of the focus range limiting section. L1, L2... Photographing optical system, L3... Focusing optical system, 10... Lens barrel, 11... Focus preset switch, 13... Switch for switching, 2
0...Fixed barrel, 22...Outer barrel, 23...Inner barrel, 25...Ultrasonic motor, 30...Lens holding barrel, 32...Rotating barrel, 36...Detection means, 37...
Clutch member, 38, 39... Intermediate member, 40...
...Mode switching ring, 41...Lock spring, 41
a...Switch button, 42...In M mode, 43...
...In PF mode, 44...In AF mode, 46...
...Circumferential groove, 47a...Coil spring, 50...Manual focus ring, 51...Intermediate ring, 52
...Pulse encoder for PF, 54...Clutch spring, 60...Pattern for limit detection, 61...Infinity side limit setting member, 62...Near side limit setting member, 63...Focus range limit release switch, 101...CPU, 102...Motor drive circuit, 103...PF pulse processing CPU, 104...
... Limit circuit, 105 ... Focus range limit circuit, 110 ... Camera body, 112 ...
Focusing control circuit, 113... photoelectric conversion unit for distance measurement, 1
14...Sub mirror, 115...Semi-transparent mirror, 116
... Focus plate, 117 ... Condenser lens, 11
8...Penta prism, 119...Finder eyepiece.

Claims

[Claims for Utility Model Registration] 1. Automatic focusing means for automatically adjusting focus by driving a focusing optical system using a driving force from a power source; Detecting means for monitoring the position of the focusing optical system; storage means for storing an output value of the detection means corresponding to an arbitrary photographing position within the photographing range of the focusing optical system; a go-home drive means for returning the system; and a limit setting means that can arbitrarily change the drive range in which the focusing optical system is driven based on the automatic focus adjustment means and set a desired photographing range. . A lens barrel characterized in that the go-home drive means is operable regardless of the restriction set by the restriction setting means. 2 automatic focus adjustment means that drives the focusing optical system to perform automatic focus adjustment using a driving force from a power source; and an arbitrary driving range in which the focusing optical system is driven based on the automatic focus adjustment means. What is claimed is: 1. A lens barrel comprising: a limit setting means that can change the focus range to set a desired photographing range; and a switch means that switches the focus range limit setting means between an activated state and a non-operated state.