| 摘要 |
<p>A light guide is disclosed having a critical angle, wherein light enters the light guide in an input direction (301). A reflector (303, 304, 305, 306) reflects light using total internal reflection in a lateral direction (320). A second reflector (311) reflects light using total internal reflection in a second lateral direction (321). A third reflector reflects light from the lateral direction upward. A fourth reflector reflects light from the second lateral direction upward.</p> |
