projected display 中文意思是什麼
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The location of cities, roads, and political boundaries that exist on the surface of the earth are projected onto a two - dimensional display or piece of paper, preserving the relative positions and relative distances of the rendered objects
實際的城市，道路，及行政區劃邊界被投影為二維的圖形，保留了原來的相對位置及相對距離，並可進行顯示或列印。 -
Normally, in current projection system, three array pixel type spatial light modulator devices were used to form three primary colors image in the projection display. to achieve the high performance projected images, the three slm devices must be adjusted precisely and superposed three primary colors images exactly one by one in space. it is means the correspondent pixels of the three colors " pixel devices must be overlapped exactly
以目前得到廣泛應用的三片式陣列像素器件投影顯示為例（如液晶投影顯示） ，在投影鏡頭成像質量達到要求的情況下，要得到清晰的圖像，還要求精確調整三片陣列像素器件的空間位置，使得陣列像素器件成像清晰，而且對應像素經成像后精確重合。
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