| 摘要 |
<p>An edge-lit illumination system comprising a light transmitting sheet (13) and a light source (10) is claimed. The light source (10) is positioned in proximity to and adjacent to the light transmitting sheet (13) which has a matrix of etched, painted or screen printed dots covering at least 50 % of at least one of its opposing surfaces. The edge-lit illumination system further comprises a reflective backing material (12) which is spaced apart from and faces one surface of the light transmitting sheet (13) such that it substantially overlies this surface. This system provides for an overall increase in average light intensity from the light transmitting sheet (13) as compared to a system where the reflective backing material is touching the surface of the light transmitting sheet.</p> |
