An illumination system (1, 100, 200, 300) for providing an optically widened perception, the illumination system (1, 200, 300) comprising: a reflector unit (6, 206, 306) comprising a reflective surface and a luminous layer (10, 210, 310) for homogenously emitting diffuse light at a first color, the luminous layer (10, 210, 310) extending in front of the reflective surface and comprising a visible front area section (10A, 210A, 310A) of the reflector unit (6, 206, 306), which extends up to a first boundary (12A, 310A) and through which the diffuse light is emitted; a light projector (2, 202, 302) configured to generate a light beam (3, 203, 303) adapted in size for comprehensively illuminating the visible front area section (10A, 210A, 310A) such that at least a portion of the light beam (3, 203, 303) passes through the luminous layer (10, 210, 310) before and after being reflected by the reflective surface, thereby forming an illuminating light beam at a second color associated with a direct light correlated color temperature, and wherein the first color and the second color are separated in color space; and a frame element positioned in a frame-like area next to and surrounding the visible front area (10A, 210A, 310A) section to form a frame area section of the reflector unit that extends outside of the visible front area section and at least partly along the first boundary, wherein the frame element is configured to essentially avoid contribution of the light portion of the light beam incident onto the frame area section to the illuminating light beam such that light of the light beam incident onto the frame area section is essentially removed from the illumination system thereby configuring the illumination system (1, 200, 300) such that a perceivable light emission from the frame-like area is essentially independent from the light beam (3, 203, 303) of the light projector (2, 202, 302). a reflector unit (6, 206, 306) comprising a reflective surface and a luminous layer (10, 210, 310) for homogenously emitting diffuse light at a first color, the luminous layer (10, 210, 310) extending in front of the reflective surface and comprising a visible front area section (10A, 210A, 310A) of the reflector unit (6, 206, 306), which extends up to a first boundary (12A, 310A) and through which the diffuse light is emitted; a light projector (2, 202, 302) configured to generate a light beam (3, 203, 303) adapted in size for comprehensively illuminating the visible front area section (10A, 210A, 310A) such that at least a portion of the light beam (3, 203, 303) passes through the luminous layer (10, 210, 310) before and after being reflected by the reflective surface, thereby forming an illuminating light beam at a second color associated with a direct light correlated color temperature, and wherein the first color and the second color are separated in color space; and a frame element positioned in a frame-like area next to and surrounding the visible front area (10A, 210A, 310A) section to form a frame area section of the reflector unit that extends outside of the visible front area section and at least partly along the first boundary, wherein the frame element is configured to essentially avoid contribution of the light portion of the light beam incident onto the frame area section to the illuminating light beam such that light of the light beam incident onto the frame area section is essentially removed from the illumination system thereby configuring the illumination system (1, 200, 300) such that a perceivable light emission from the frame-like area is essentially independent from the light beam (3, 203, 303) of the light projector (2, 202, 302).