Rayfoss 808nm Laser Collimation Lens

[Blord]

Does anybody have experience with these collimation lenses for 808nm diodes ?
I have a 808nm IR laser and the raw output is 860mW but with the standard glass lens the output drops to 650mW. I want to know of the Rayfoss lens will make any difference in ouput ?

2pcs 808nm Laser Collimation Lens/M9x0.5 Frame | eBay

 

[lasersbee]

I would ask the seller what the loses are at 808nm
through the lens...


Jerry