capping shutter

Japanese: capping shutter(英語表記)cappingshutter
capping shutter

…While the rotating prism type can be synchronized sufficiently with mechanical contacts, the rotating mirror type requires technology to control the occurrence of the phenomenon to within ±1 μs of the mirror's rotation angle in order to match it to the narrow angle range of the mirror's rotation, and research into the method of starting the subject is important. In addition, this type of camera sometimes uses a high-speed capping shutter to prevent double exposure. An explosion shutter, which uses a small electric detonator to crack the transparent glass and make it opaque, has a response speed fast enough to block the exposure in the next rotation phase of the high-speed rotating mirror. …

*Some terminology that mentions "capping shutter" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…回転プリズム式では機械的接点で十分同期できるが,回転鏡式では鏡の回転の狭い角度範囲に合わせるため,現象の発生を鏡の回転角に合わせて±1μs以内の精度で制御する技術も必要で,撮影対象の起動法の研究が重要となる。またこの種のカメラでは,ときとして二重露光を防ぐため高速のキャッピングシャッターcapping shutterを用いる。小さな電気雷管に通電して,透明ガラスにひびを入れ不透明とする爆発シャッターは,高速回転鏡による次の回転相での露光を遮断するのに十分な応答速度をもっている。…

※「capping shutter」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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