How to copy or project uvs & (data block) to another object? to use the same UV map in other objects

**How i do this ?**
> Maybe you want to work on your object until it satisfies the lowpoly lod level, then unwrap and duplicate, and add a subdivide modifier with the option 'subdivide uv' off. This way all you object will have the same uv layer – Yvain Mar 30 '16 at 11:22

[![Example][1]][1]

  [1]: https://i.sstatic.net/qU8ca.png