Increase range?

[Gr1mLogic]

How to increase range if money or parts not an issue can it be down increase range and power ?

[dreiduke]

u will need IR optics, such like that:
https://www.edmundoptics.com/c/ir-lenses/655/#:~:text=IR%20Lenses%20are%20optical%20lenses%20that%20use%20specific,infrared%20spectrum%20refers%20to%20700%20%E2%80%93%2016000nm%20wavelengths.