| 摘要 |
<p>PURPOSE: A projection display device is provided to compensate the lowering of output caused by the deterioration of a first light source by using a second light source. CONSTITUTION: A first light source(310) emits first light, and a second light source(320) emits second light corresponding to the first light source. The second light source has first color, and an image generation unit(200) generates a transmission image through the use of the first light. A sensing unit(270) senses the first light, and a driving unit receives the input of the first light strength from the sensing unit. The driving unit drives the second light source.</p> |
