JPH02117526U

JPH02117526U -

Info

Publication number: JPH02117526U
Application number: JP2684689U
Authority: JP
Priority date: 1989-03-08
Filing date: 1989-03-08
Publication date: 1990-09-20

Description

[Brief explanation of the drawing]

第１図ａ〜ｅは夫々本考案の一実施例にかかる
迷光防止機構を備えた電子スチルカメラの平面図
、正面図、底面図、左側面図及び右側面図、第１
図ｆは上記スチルカメラ内に備えられる駆動シス
テムを示す説明図、第２図ａ〜ｃは夫々広角レン
ズ、望遠レンズ及びローズアツプレンズの状態を
示す説明図、第３図は各レンズでの撮影可能距離
及び人物を撮影した場合の画面比を示す図、第４
図ａはレンズ切換駆動機構を示す要部断面図、第
４図ｂ，ｄ，ｆ，ｈ，ｊ，ｌは夫々レンズ前ブロ
ツクの動作を示す説明図、第４図ｃ，ｅ，ｇ，ｉ
，ｋ，ｍは夫々レンズ後ブロツクの動作を示す説
明図、第５図ａはレンズ状態検出手段のパターン
基板のパターン図、第５図ｂは上記パターン基板
と切片とより生ずる信号を示すタイミングチヤー
ト図、第６図ａ〜ｄは夫々バリア開閉動作を示す
説明図、第６図ｅ〜ｇは夫々バリア開閉機構の説
明図、第７図ａ，ｂは夫々欠歯歯車の正面図及び
該歯車に肉盛り部を形成した場合の正面図、第８
図ａ，ｂは夫々広角レンズにおけるフアインダー
切換動作の説明図、第８図ｃ，ｄは夫々望遠レン
ズにおけるフアインダー切換動作の説明図、第８
図ｅ，ｆは夫々クローズアツプレンズにおけるフ
アインダー切換動作の説明図、第８図ｇ〜ｉは夫
々フアインダー切換動作を行う機構の説明図、第
９図ａ〜ｄは夫々切換防止機構の動作を示す説明
図、第９図ｅは切換防止スプリングの取付状態を
示す斜視図、第１０図ａ〜ｃは夫々本実施例にか
かる迷光防止機構を示す説明図、第１１図ａ，ｂ
は夫々レンズの切換動作のフローチヤート、第１
１図ｃはバリア開閉動作のフローチヤートである
。１……レンズ前ブロツク、１ａ，１ｂ……主光
学系、１ｋ，１ｌ，１ｍ……迷光防止壁、２……
レンズ後ブロツク、２ｃ……副光学系、２ｋ，２
ｌ……迷光防止壁、３……望遠スイツチ、４……
クローズアツプスイツチ、５……レリーズスイツ
チ、６……カメラマイコン、７……モータ、８…
…減速ギヤ、９……太陽ギヤ、１０……遊星ギヤ
、１１……レンズ切換ギヤＡ、１２……レンズ状
態検出手段、１３……レンズ切換ギヤＢ、１４…
…レンズ切換ギヤＣ、１５……レンズ切換ギヤＣ
′、１６……スナツプスプリングＡ、１７……ス
ナツプスプリングＢ、１８……切換防止爪Ａ、１
９……切換防止スプリングＡ、２０……切換防止
爪Ｂ、２１……切換防止スプリングＢ、２２……
レンズ回転軸、２３……レンズ位置決めＡ、２４
……レンズ位置決めＢ、２５……撮像素子、４０
……フアインダー部、４１……広角コン副光学系
ブロツク、４２……広角コンギヤ、４３……広角
コンスプリング、４４……広角コンストツパー、
４５……クサビレンズブロツク、４６……クサビ
ギヤ、４７……クサビスプリング、４８……クサ
ビストツパー、５１……バリア駆動ギヤ、５２…
…バリア状態検出手段、５３……バリア駆動レバ
ー、５４……バリア駆動連結板、５５……バリア
スプリングＡ、５６……バリアスプリングＢ、５
７……バリア駆動レバーＢ、５８……レンズバリ
ア、５９……バリアガイド、７０……フラツシユ
、７１……直流電源、８０……測光部、９０……
メインスイツチ、１０１……駆動側歯車Ｉ、１０
１ａ，１０２ａ……肉盛り部、１０１ｂ，１０２
ｂ……第１歯、１０１ｃ，１０２ｃ……第２歯、
１０２……被駆動側歯車，１０２ｄ……切欠部
。 1A to 1E are a plan view, a front view, a bottom view, a left side view, a right side view, and a first view of an electronic still camera equipped with a stray light prevention mechanism according to an embodiment of the present invention, respectively.
Figure f is an explanatory diagram showing the drive system provided in the still camera. Figures 2 a to c are explanatory diagrams showing the states of the wide-angle lens, telephoto lens, and rose-up lens, respectively. Figure 3 is an explanatory diagram showing the states of the wide-angle lens, telephoto lens, and rose-up lens. Diagram showing the possible distance and screen ratio when photographing a person, 4th
Figure a is a sectional view of the main part showing the lens switching drive mechanism, Figures 4 b, d, f, h, j, and l are explanatory diagrams showing the operation of the front lens block, respectively, and Figures 4 c, e, g, and i.
, k, and m are explanatory diagrams showing the operations of the post-lens blocks, respectively. FIG. 5a is a pattern diagram of the pattern board of the lens state detection means. FIG. 5b is a timing chart showing the signals generated by the pattern board and the section. Figures 6a to 6d are explanatory diagrams showing the barrier opening/closing operation, respectively, Figures 6e to g are explanatory diagrams of the barrier opening/closing mechanism, respectively, and Figures 7a and b are front views of the partially toothed gear and the gear. Front view when a build-up part is formed on the 8th
Figures a and b are explanatory diagrams of the finder switching operation for a wide-angle lens, respectively; Figures 8c and d are explanatory diagrams of the finder switching operation for a telephoto lens, respectively;
Figures e and f are explanatory diagrams of the viewfinder switching operation in a close-up lens, respectively. Figures 8 g to i are explanatory diagrams of the mechanism that performs the finder switching operation, respectively. Figures 9 a to d each illustrate the operation of the switching prevention mechanism. An explanatory view, FIG. 9e is a perspective view showing the installation state of the switching prevention spring, and FIGS. 10a to c are explanatory views showing the stray light prevention mechanism according to the present embodiment, and FIGS. 11a and b.
are flowcharts of lens switching operations, respectively.
Figure 1c is a flowchart of the barrier opening/closing operation. 1... Lens front block, 1a, 1b... Main optical system, 1k, 1l, 1m... Stray light prevention wall, 2...
Rear lens block, 2c...Sub-optical system, 2k, 2
l... Stray light prevention wall, 3... Telephoto switch, 4...
Close-up switch, 5...Release switch, 6...Camera microcomputer, 7...Motor, 8...
...Reduction gear, 9...Sun gear, 10...Planetary gear, 11...Lens switching gear A, 12...Lens state detection means, 13...Lens switching gear B, 14...
...Lens switching gear C, 15...Lens switching gear C
', 16...Snap spring A, 17...Snap spring B, 18...Switching prevention claw A, 1
9...Switching prevention spring A, 20...Switching prevention claw B, 21...Switching prevention spring B, 22...
Lens rotation axis, 23... Lens positioning A, 24
...Lens positioning B, 25...Image sensor, 40
...Finder part, 41...Wide-angle con sub-optical system block, 42...Wide-angle con gear, 43...Wide-angle con spring, 44...Wide-angle con stopper,
45... Wedge lens block, 46... Wedge gear, 47... Wedge spring, 48... Wedge stopper, 51... Barrier drive gear, 52...
... Barrier state detection means, 53 ... Barrier drive lever, 54 ... Barrier drive connection plate, 55 ... Barrier spring A, 56 ... Barrier spring B, 5
7... Barrier drive lever B, 58... Lens barrier, 59... Barrier guide, 70... Flash, 71... DC power supply, 80... Photometry section, 90...
Main switch, 101...Drive side gear I, 10
1a, 102a... Overlay part, 101b, 102
b...first tooth, 101c, 102c...second tooth,
102... Driven side gear, 102d... Notch.

Claims

[Claims for Utility Model Registration] A main optical system holding member 1 that supports the main optical systems 1a and 1b and a rear converter type sub optical system 2c are axially supported and the main optical system 1a is rotated about the axis.
, 1b, the main optical system 1a, 1b is attached to the surface of the main optical system holding member 1 facing the sub optical system holding member 2, and the main optical system 1a, 1b, and two second stray light prevention walls 1l extending from the first stray light prevention wall 1k and formed in an arc shape around the rotation axis of the sub optical system holding member 2. . The fourth stray light preventing wall 2l extends from the wall 2k and is movable between the two second stray light preventing walls 1l, 1m, and always closes the space between the two second stray light preventing walls 1l, 1m. Features a stray light prevention mechanism.