Optical setup: proper lenses selection

[MG_xy]

Dear all,
I am going to realize an experimental optical setup and I need your suggestions to make the correct selection of lenses.
A polychromatic light beam coming from a monochromator (400-700, slit dimension: 1 mm, cone angle 11°) has to be focused onto the base of a cylindrical lens.
I need the light beam striking onto the glass prism being almost parallel through the path along the prism.
I think that a convergent beam with a section of 2 mm can “simulate” this ideal situation.
Can you suggest me a combination of lenses able to direct the light beam from the monochromator to the prism?

Thank you in advance

 

[UltrafastPED]

Some drawings would help ... it would also help to know what the setup is for.

 

[MG_xy]

Thank you for your fast reply.
In the attachment you can find a raw scheme of my experimental setup.
I thinck that a pair of achromatic doublet lens could be a good choice.
But I need some suggestions to make a proper choice of focal lenses in order to obtain a beam focused on the the base of the prism with a small section (1-2 mm) and with a very small cone angle.
Could you help me?

Thank you in advance

 

[UltrafastPED]

For general principles, in a handy format, always check the optical component vendors!

In this case Newport provides a complete analysis of your situation:
http://www.newport.com/Focusing-and-Collimating/141191/1033/content.aspx

They will also sell you the correct achromats; for example, this one is good for 400-700 nm:
http://search.newport.com/?q=*&x2=sku&q2=APAC17