灯泡、LED、单色激光、三色激光……投影仪的光有什么区别？激光投影仪就一定更好吗？

买投影仪看电影，图的就是一个“氛围感”、“沉浸式”，但很多人会发现，投影仪要么亮度不够，要么色彩差那么点意思。而这些，都跟投影仪的光源有关。不同投影仪有什么区别？激光投影仪一定更好吗？什么样的投影仪能还原出准确、真实的色彩？
Buying a projector to watch movies is for the "atmosphere" and "immersion", but many people will find that the projector is either not bright enough or the color is not good. And these are all related to the light source of the projector. What's the difference between the different projectors? Are laser projectors necessarily better? What kind of projector can reproduce accurate, true colors?

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