They all use some sort of a refraction system. LED CoB design should be more than sufficient.
More info below.
https://www.cnet.com/news/why-lasers-are-the-future-of-projectors/
http://www.benq.us/product/projector/lu9715/features/
More info below.
https://www.cnet.com/news/why-lasers-are-the-future-of-projectors/
http://www.benq.us/product/projector/lu9715/features/