| 摘要 |
The invention relates to a light emitting diode (LED) light source comprising an LED die, or a closely packed die array or matrix of die arrays, substantially and efficiently coupled to non-imaging collection optics. The non-imaging collection optics operate to provide a homogenized LED output having a near field whose intensity is highly uniform and a reduced far field extent substantially preserving the tendue (area, solid angle, index squared product) of the LED output. The near field, in turn, is imaged by a downstream relay lens to an illumination plane a specific distance away. |
