Lighting device for vehicles

The invention relates to a lighting device for vehicles, in particular a signal light, comprising a light source for emitting a light beam and an optical unit associated with the light source for producing a predetermined light function, the optical unit having a holographic element and a lens arranged in the main emission direction in front of the holographic element, the holographic element comprising such a diffraction structure that the light beam emitted from the light source onto the holographic element is varied according to a predetermined illumination pattern such that the holographic light beam lights an illumination surface of the lens to generate the light function. 本发明涉及种用于车辆的照明装置，尤其是信号灯，包括用于发射光束的光源并且包括配置给光源的光学单元，以用于产生预定的光功能，其中，光学单元具有全息图元件和沿主发射方向在所述全息图元件之前设置的镜片，其特征在于，全息图元件具有这样的衍射结构，使得从光源入射到全息图元件上的光束对应于预定的照明图案改变，从而全息图光束照亮镜片的预定的照明面，以用于产生光功能。