| 摘要 |
<p>The shutter, for medical cameras of simplified construction, is designed to reduce the risk of failure, with a pivoted mirror having two defined end settings. The mirror (1) pivots about an axis (2) between endstopds (3, 4) with a spring (6) between mirror and case which holds the mirror against either stop. The mirror is displaced by cams (7, 7") engaging with projections (1, 1") operated by sliding the cam plate (7) under guidance of a slot (8) round the shaft (2). Exposure time is controlled by a locking system (12, 13, 15).</p> |
