Help identifying

[Alien Laser]

I found some glass lenses !
one is reflecting blue the other purple and the last yellow the blue is for Red diodes the purple i have no idea and the yellow i believe is for 445nm+ no idea if I’m correct.

 

[paul1598419]

Are these single element or 2 element lenses?

 

[Alien Laser]

I got this from DTR like in 2015 i believe the all are -3E

 

[paul1598419]

I got this from DTR like in 2015 i believe the all are -3E

Okay. Well, sorry I can't help you identify the AR coating on them. I have never used those lenses.