Backlight panel for illuminating e.g. decorations, has printed reflective mirrors provided with variable surface that is provided in direct proportion to intrinsic luminous attenuation of panel by absorption and refraction

摘要

The panel (1) has a set of LEDs (3), and a set of printed reflective mirrors (4), where the set of LEDs is arranged for illuminating a surface of the panel and a surface of a reflective film (6). The set of printed reflective mirrors is printed on the back of panel so as to return part of luminous energy corresponding to diffusion refraction (RD). The set of printed reflective mirrors is provided with a variable surface that is provided in direct proportion to intrinsic luminous attenuation of the panel by absorption and refraction.