| 摘要 |
PURPOSE:To provide various types of flux distribution via a single lighting fixture. CONSTITUTION:A plurality of slits 2a are formed on a roughly cup-shaped reflecting plate 2, originating from the edge thereof. A flux distribution adjustment fixture 5 to externally restrict the reflecting plate 2 while in contact with the external surface thereof is so fitted as to be freely slidable in an axial direction, thereby making a relative position between the fixture 5 and plate 2 freely adjustable. The fixture 5 is kept in contact with the plate 2, and the position of the contact changes, thereby causing the fixture 5 to restrict the form of the plate 2. A change in the form of the plate 2 under restriction can provide flux distribution over the range of wide flux to narrow flux with a single lighting fixture. In addition, even after fitting the fixture, flux distribution can be adjusted, while light is being actually, irradiated and flux distribution to suit an installation position can be obtained. |
