IMAGE-CAPTURING DEVICE

PROBLEM TO BE SOLVED: To assist in resolving abnormality in lens movement.SOLUTION: When a lead screw 71 rotates along with the rotation of a motor 51a, a nut 72 joined with the lead screw 71 moves in an axis 310 direction. A focus len 31 moves along with the movement of the nut 72. When the nut 72...

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Bibliographic Details
Main Authors HISANO SHINJI, HATANAKA HARUO
Format Patent
LanguageEnglish
Japanese
Published 17.11.2014
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Summary:PROBLEM TO BE SOLVED: To assist in resolving abnormality in lens movement.SOLUTION: When a lead screw 71 rotates along with the rotation of a motor 51a, a nut 72 joined with the lead screw 71 moves in an axis 310 direction. A focus len 31 moves along with the movement of the nut 72. When the nut 72 moves up to an end 320 of the lead screw 71 for some reason, the nut 72 comes near to be separated from the lead screw 71, causing normal movement of the nut 72 and the lens 31 to be impaired. When such abnormality is detected, a message "Gently hit the camera" is displayed, and a return operation is executed in which the motor 51a is rotated in a direction at a prescribed speed for causing the nut 72 and the lens 31 to move in a collapsible direction (it can be expected that the nut 72 is normally returned onto the lead screw 71 by a mechanical shock generated by hitting the camera). 【課題】レンズ移動異常の解消を支援する。【解決手段】モータ51aの回転に伴ってリードスクリュー71が回転すると、リードスクリュー71と結合するナット72が軸310方向に移動する。ナット72の移動に伴いフォーカスレンズ31が移動する。何らかの要因によりナット72がリードスクリュー71の端部320にまで移動すると、ナット72がリードスクリュー71から外れかかってナット72及びレンズ31の正常移動が損なわれる。このような異常が検出された時、「カメラを軽く叩いて下さい」というメッセージを表示すると共に、ナット72及びレンズ31を沈胴方向に移動させる方向にモータ51aを所定速度で回転させる復帰動作を実行する(カメラを叩く衝撃によりナット72がリードスクリュー71上に正常復帰することが期待される)。【選択図】図9
Bibliography:Application Number: JP20130093795