| 摘要 |
A luminaire (1) comprises a reflector (3) that defines an elongate concave cavity in which an elongate light source (2), for example a fluorescent tube, is located in spaced relationship to the reflector whereby the latter surrounds the light source on its rearward side to reflect light from the source and cause it to be emitted from the cavity in a generally-forwards direction. To enable the distribution of light from the luminaire (1) to be tailored to meet the requirements of the situation in which the luminaire is to be used, the reflector (3) is provided, on opposite sides of the cavity, with a respective prismatic structure (6) upstanding from its inner surface to intercept and deviate light that is emitted, in the generally-forwards direction, from the space in the cavity between the light source (2) and the reflector (3). |
