| 摘要 |
<p>The device relates to an illumination system (3) and a flat-panel picture display device (1) including such an illumination system. The illumination system (3) comprises an optical waveguide (9) of an optically transparent material having an exit surface (19) and four end faces (13, 14, 15, 16). The light from a light source (11) is coupled into the optical waveguide (9) via at least one of said end faces (13). The illumination system (3) further comprises polarizing means for polarizing the light supplied by the light source. The polarizing means are implemented as a reflective polarizer (21) in combination with a diffuser (23). The reflective polarizer (21) is integrated with the optical waveguide (9) and constitutes the surface (25) of the optical waveguide (9) which is located opposite the exit surface (19). The diffuser (23) is present on a surface of the polarizer (21) remote from the optical waveguide (9).</p> |
