LIGHTING DEVICE Russian patent published in 2014 - IPC F21S8/00 

FIELD: electricity.

SUBSTANCE: invention relates to the field of lighting engineering, in particular to lighting fixtures of floodlight type, and can be used for development of underwater lighting fixtures, and also car headlights and searchlights of other vehicles. The technical result is achieved due to that in the device with LED lamps as light sources, collimation secondary optics and protective glass, the LED lamps are installed with collimation secondary optics so that the optical axes spatially are located under different corners to optical axis of the lighting fixture, while minimum two groups of LED lamps are connected to the power supply in parallel. The power supply allows to power up different combinations of groups of LED lamps, and also to regulate the current in these groups of LED lamps. LED lamps with collimation secondary optics can be located evenly along circumferences, concentric with reference to the lighting fixture axis, and their optical axes intersect an optical axis of the lighting fixture at the centre of its protective glass. As a light source the clusters of LED lams and their respective collimation secondary optics can be used.

EFFECT: interactive change of angle of dispersion and direction of shaped light beam, distribution of light intensity by a scattering angle and expansion of the scope of its application.

3 cl, 1 dwg