As nouns the difference between collimation and recollimation
is that collimation is the act of collimating or something collimated while recollimation is (physics|of a beam) collimation subsequent to broadening.
collimation
English
Noun
the act of collimating or something collimated
aligning lenses along line of sight to minimize aberrations
Related terms
* collimate
* collimator
recollimation
English
Noun
(
en noun)
(physics, of a beam) collimation subsequent to broadening
Related terms
*recollimated