| 摘要 |
PURPOSE:To enhance atmosphere around a lamp by controlling light distribution to the front of a lamp, and making light permeate in the directions other than forward. CONSTITUTION:Light distribution controllers 10, 25 control part of lamp light, to thus control light distribution to the front of a lamp 1. The residual lamp light permeates a transparent portion 9 so as to radiate light sideways or rearward of the lamp 1. Consequently, it is possible to sense the atmosphere around the lamp 1 through the transparent portion 9, to sufficiently distribute light forward of the lamp 1 by the light distribution controllers 10, 25, to facilitate light distribution control, to particularly facilitate prevention of a phenomenon of illuminance drop directly under the lamp, and to enhance efficiency of the luminaire. |
