| 摘要 |
A lighting system, preferably for use in operating theatres, in which at least one light source is mounted to be movable an adjustable in a single ceiling and/or wall element in the form of a prefabricated module element (4). The light sources in each module element may be controlled singly or in clusters by means of a control device designed to direct the source or sources to focus at a point defined by an optical, ultrasound or magnetic, radio frequency pointer that is seen by an appropriate sensor/camera system or receiver in the room, and which, via control means, moves the light source to the desired position. The light source consists of light-emitting diodes, halogen bulbs or the end of one or several fiber-optical cables, fixed ion a holder shaped as one half of a cup or a sphere, the holder being arranges to be movable about two perpendicular axes in the xy-plane (the ceiling plane) of the ceiling module (4). The holder is attached to the ceiling element by means of a gyroscopic suspension system or a ball joint suspension system. On the top of the holder, which is at the back of the ceiling module (4), there is provided two attachment points (16, 17) offset by 90° with respect to each other but parallel to the plane of the ceiling when the light beam is directed downwards normal to the ceiling plane (xy-plane), respective linear actuators being articulated to the attachment points for reciprocating movement, so as to rotate the holder about the x-axis and the y-axis, respectively. This can also be done by use of rotary actuators, possibly mounted in combination with a gear unit, which rotate the suspension ball/holder directly about the axis of rotation. |
