  We describe here the important astrophysical results that could be obtained
by using large format (say 32 by 32) bolometric detectors at 1 and 2 mm with
the IRAM 30m telescope: having a confusion-limited 1 mm extragalactic survey
containing a large fraction of high redshift objects, mapping star formation
regions in our galaxy at 1 mm, and mapping the Sunyaev-Zeldovich effect at 2 mm
in tens of high-redshift clusters. We also show a first optical implementation
and the key points of this project.
