| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-emitting diode (LED) and, in particular, a technique for controlling the beam of the LED. <P>SOLUTION: A beam shutter is disclosed that is affixed to an LED die submount or circuit board to sharply define the emitted optical pattern. The beam shutter may be a solid piece of aluminum or any other arbitrary opaque material to block a portion of the light emitted from the LED die. The beam shutter is particularly advantageous for shaping the LED light for car headlamps. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
