| 摘要 |
There is disclosed lighting apparatus suitable for being positioned adjacent to an area or an object for indicating the location or orientation of the area or object. The apparatus is provided with a set of light emitters for emitting light and which are positioned side by side relative to one another. The light emitters are staggered for emitting the light outwardly from the apparatus at an increasing angle along the set relative to a plane of reference. In a particularly preferred embodiment, the light emitters are light emitting diodes. The apparatus finds particular application as an airstrip light for indicating the position and orientation of the airstrip to approaching aircraft. Signalling apparatus for being positioned adjacent to an area for indicating the position of the area and which are provided with infrared emitting diodes for emitting an infrared signal are also described.
|
