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"... projectors that suffer the largest light loss are hybrids -- those that use a combination of LED and laser sources. Pure LED projectors have less brightness but also lose less light output over their lives."

Trying to figure out how this goes. Okay, so a pure LED projector used R+G+B LEDs, whereas a hybrid projector uses a RED LED, a BLUE LED, and for the GREEN color, it uses a blue laser with a yellow phosphor wheel. If these LED+laser combination "hybrid" projectors lose more of their brightness than the pure LED chip projectors do, as seems to be suggested here, than the lightness loss must be related to the laser part in the hybrid, specifically the tiny blue laser gun that is used to generate the greens via the spinning phosphor wheel. I was not aware that laser sources dim over time at all, although I know that LEDs do.