| 摘要 |
A display system (100) has a semi-transmissive mirror (120) disposed between the light sources (116a, 116b) and the display panel (102). The semi-transmissive mirror includes a light-diverting input coupling element (206) facing the light sources, a light-diverting output coupling element (208) facing the display panel and a multilayer reflector (204) between the input and output coupling elements. The semi-transmissive mirror laterally spreads the light, making the illumination of the panel more uniform. The semi-transmissive mirror may include a transparent substrate (202) between the input and output coupling elements for additional light spreading. The light sources may be positioned within the controlled transmission mirror, rather than behind it. The output coupling (208) element can be non polarizing, so the light passing out of the controlled transmission mirror is unpolarized, or it can be polarizing so that the output light is polarized. ® KIPO & WIPO 2008 |
