| 摘要 |
A light source (figure 1) with enhanced brightness includes an angle-selective optical filter (106) and a light emitting diode (100) (LED) having a high reflective layer (104). The angle-selective filter (106) is located on the top surface of emitting diode to pass lights at specified angles. According to one embodiment, the angle-selective filter (106) comprises index-alternating layers. With a reflective polarizer, the light source can produce polarized light with enhanced brightness. |
