Flat lamp with diffraction grating

The flat lamp with diffraction grating has a light source and flat catadioptric optical-fibre waveguide (1), on whose opposite side, in front of the light-emitting surface, there is a layer made up of at least two diffraction grates (2), which are fitted over one another and which are vacuum coated in their top layer to reflect signals from the light sources (4, 5, 6) for the creation of individual light surfaces for the integrated lights of cars, like the light surface (7) of indicator lights, light surface (8) of brake and side lights, light surface (9) of fog lights and light surface (10) of reverse lights. Alternatively, the side of the flat catadioptric optical-fibre waveguide (1) is covered with individual independently delimited vacuum plated diffraction grates (2), for the creation of individual light surfaces for the integrated lights of cars. The light-emitting surface of the flat catadioptric optical-fibre waveguide (1) can be equipped with optical elements (11) of a diffractive character for the final distribution of light in required directions for individual light surfaces (7, 8, 9, 10) of the integrated lights of cars.