Hello, 

Not quite sure this community is still active?

I want to have a lens system which can form the image from infinity to a limited distance as show below.  As you can see that the concave lens system will reduce the input field of view.  How can I have a compact concave lens system which can form the image from infinity to a limited distance and keep the same field of view as the input.  Can you have some suggestions or initial configuration for recommendation?

Thank you ! 

BL