The LG CF3D has been around for some time and has been reviewed at projectorreview.com. I'm not cetain what the AT at the end of the model number indicates for the one in the LG link you provided. However that LG web page has obvious errors. It say its LED in the title but in the spec. page it shows it has a lamp with a rated 3000 life in high lamp mode (as does the CF3D). It appears the term LED is an error, as this appears to be a lamp based projector.