Perhaps, but that is the 5T one, the "one fresnel lens" option or "one diffraction grating" option are cheaper and seem more feasible.
That said, if scientists believe that all they lack is money, who are you to tell them otherwise.
That said, if scientists believe that all they lack is money, who are you to tell them otherwise.
(Not space lenses, but another risky, poorly-understood geo-engineering proposal)