Abstract: An operating room lighting system, which comprises a lighthead support for a lighthead with a plurality of light elements, especially LED light elements, for generating a light field on an object to be illuminated, as well as adjustment elements for controlling features of the lighting system, especially for controlling features which modify a light field generated by the lighthead, said adjustment elements comprising a portable pointing device for controlling the lighting system by means of a pointing beam by the action of a lighting system operator. In the invention, the portable pointing device further comprises projection elements for projecting adjustment instructions on or around a light field generated by the pointing device and/or on a light field generable or generated by the lighthead.

Abstract: A lighting arrangement having a lighthead support, including one mounting plane which consists of a plurality of mounting brackets set in a single plane fitted with light elements and being rod-like members which are aerodynamic at least in a direction transverse, and the light elements containing at least one light emitting diode, whereby said mounting brackets are disposed in the proximity of a ceiling preferably above an operating table so as to be located immediately below a supply air frame of the facility to be illuminated and in such a way that a supply air flowing through the supply air frame is adapted to retain its constant angle of incidence with the mounting plane regardless of where the object of illumination is located in the to-be-illuminated facility with respect to the mounting plane or regardless of the direction of a light beam generated by each light source or LED.