Help Needed for Lens Selection for Fiber optics

[EBINESH]

I am using a fiber optic cable through which led light propogate, fiber's half acceptance agle is 30 degree. I want to make the light (diverging)comes out of fiber into collimated beam and this collimated beam will pass through filters, sample and will be used for Fluoroscence application. hope you got the instrumentation set up. Which type of lens would best work for this application. Either Plano convex or Double convex , aspheric ! Please help me to find the best solution.
Thanks in advance

 

[sophiecentaur]

Google can be your friend here. Try googling "lenses for fibre optic coupling". I got many interesting hits. Come back to PF with a bit of knowledge gained and you will get much more useful help from us.