| 摘要 |
<p>This magnetic direct drive shutter actuation system for an optical shutter with an aperture and shutter blades has blades rigidly connected via a pivot to a permanent magnet or magnets. This magnet or magnets have magnetic axes parallel to the pivot. The magnet or magnets is/are moved so as to cause rotation of said pivot and thereby open or close said aperture by electromagnets peripheral to the aperture. In the preferred embodiment, the electromagnet(s) form a quadrapole.</p> |
