| 摘要 |
Disclosed herein is a LED and a lighting apparatus, which employs a LED as a light source of low power and high efficiency for an optical projection system. The lighting apparatus comprises a reflection part together with the LED, and enhances light emitting directionality of the LED, thereby generating parallel light or focused light suitable for the light source of the optical projection system. The LED comprises a negative electrode and a positive electrode formed on an identical plane with different stack constructions, thereby reducing the number of wires between the electrodes occupying a predetermined volume. In addition, the substrate and the electrodes are made of a transparent material to transmit light therethrough, so that the light source using the LED radiates light in all direction as in the light source using the arc discharge, without shielding the light at a rear side by the electrodes.
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