I'm looking for some information about the smallest laser pointers availiable, or more precisely the internal parts of the laser required to make your own. Its for a uni project which involves putting a laser pointer inside a pen like object but space is important so I need to find the smallest laser mechanism I can to fit inside the pen.
So basically could anyone provide me with any information on this, ideally I'm looking for something that could be used up to about 15 - 20 metres with as little divergence as possible.
I have seen lasers that are down to about 5.6mmx9mm but from what I've read I don't think this is really what I need so I'm hoping some of you guys could help as I don't really know too much about this stuff.
If anyone can help it would be much appreciated.
So basically could anyone provide me with any information on this, ideally I'm looking for something that could be used up to about 15 - 20 metres with as little divergence as possible.
I have seen lasers that are down to about 5.6mmx9mm but from what I've read I don't think this is really what I need so I'm hoping some of you guys could help as I don't really know too much about this stuff.
If anyone can help it would be much appreciated.