| 摘要 |
PURPOSE:To obtain the title unit easy to rotate even if set up over a continuous span by stretching a thin-filmy flexible lightweight material over the surface of a fixed blade integrated with a revolving shaft. CONSTITUTION:The objective light conditioning unit is comprised of a set of removing shaft 3, fixed blade 4 integrated with this shaft 3 and revolving mechanism. And a thin-filmy flexible lightweight material is stretched so as to surround the entire outer periphery of each skeletal form constituting the corresponding fixed blade 4. Said lightweight material is suitably a thin film of curtain material or synthetic resin, and plural functions can easily added to the blade by application of various kinds of mutually different functional materials. |
