seeking help with collimating issue.

[restlessmind]

I'm trying to come up with the way to combine multiple green laser diodes in order to project a visible beam approximately 1 to 2 inches wide. I'm trying to make everything fit in the smallest package possible. If this is possible I really would appreciate any information that would help me accomplish my goal. Thank you for your time in reading this post and I hope I can get this problem figured out

 

[trussmonkey25]

look-up knife edging