Patent ID: 8668359
Filing Date: 2014-03-11
Classification: F21K,F21S,F21Y

Abstract:
1. A fixture for providing lighting comprising a light source, an optical system adapted to direct and shape an incident beam of light from the light source into an output slit beam, a motor coupled to a revolvable part of the optical system, thereby enabling rotation of the revolvable part, and accordingly the output slit beam, around a rotational axis (y), with such an angular velocity (φ) and in such a manner that the provided lighting appears continuous to a spectator, characterized in that a stationary part of the optical system comprises a concentrating element adapted to concentrate light from the light source and a control circuit configured to deliver a pulse modulated feed current to the light source and to synchronize a pulse frequency of the feed current with the angular velocity (φ) so that the light source is recurrently activated in the same at least one rotational angle (θ 0 ), thereby recurrently illuminating a corresponding at least one sector (S θ=0 ) of the environment.