Looking for the lens mount type for micron CMOS headboard.

Hi all,

Ok, so I've been searching the web for a while now... my googling skills seem to fail me :S

What I'm trying to find out is: what type of lens mount does the following micron headboard has? I'm asking because I'd like to buy the headboard but I need to know what options I have if I needed to change the lens.

here is the headboard:
http://parts.digikey.com/1/parts/111...12stch-es.html

Also, I'd be most grateful if someone can tell me if there is a standard mount for small lenses (diameter <= 5 mm) because that's the size of lens I'd like to have on my final prototype.

Any tutorials or links or advice would also be truly appreciated. really, every little helps :)

Many thanks in advance,
Hasan.