I answer myself: it works very well, you just need to have an HDMI-MHL input on the projector. And don't exceed 1920x1080 resolution, otherwise the image will not be projected.

Hi Sylvain! - Excuse my bad French and thanks to leo.org :)

According to the manufacturers: No. Because it's not possible to stick the Acer consis (bündig) connector on the back of the projector.
I tried it anyway, and it's not to be recommended: The HDMI connections are very sensitive and after a few weeks the broadcast is not reliable.

Best regards
Peter