Different items/types of collections have some very different definitions. Typically "antique" means things older than 100 years. For me it also means no electricity even if that can now cross the 100 year line.
"Vintage" is more variable, can be one generation or more -- so for my generation in the 1970s the 1950s was vintage. My own definition for what I mean by "vintage" fabric is that which is 36" wide (in general) which is generally earlier than mid-1960 (at least American-made), but I've seen Y2K fabrics described as vintage as well. As time is passing on, a lot more stuff is dated as "mid-century".