| 摘要 |
<p>A non-scattering light pipe (10) includes a transition surface (28, 30) between a first side wall (14) and an input suface (12) and a second side wall (16) and the input surface (12). The transition surface is arranged to substantially obscure the corner interfaces (36, 38) between the first and second side walls and the input surface such that in the corner formation any imperfections therein are not imaged into the output. Most preferably, the transition surface is optimized to provide a substantially uniform light intensity distribution. A light pipe in accordance with the preferred embodiments of the present invention is further arranged to couple a linear light source (306), such as a cold cathode fluorescent light (CCFL). The light source is arranged such that dim areas (337', 338'), i.e., areas of the light source having non-uniform intensity, are not disposed adjacent the input surface.</p> |
