Orange plastic

[Bearded_Galaxy]

I have some thick, translucent orange plastic. Does anyone know how I could reasonably see how good it is at protecting against blue light? I want to use it as a shield for some laser demos at my old high school.

 

[jeffreythe00]

Just because it is thick and orange doesn't mean it will block 445nm light. I'd suggest if you want to test the plastic. Send a sample of it to one of the members to test for you.

 

[Bearded_Galaxy]

Btw, I don't have an LPM. Any easy way anyone can think of for me to test it myself?

 

[Cyparagon]

^The rating for protection is optical density which is based on the logarithm of transmission. A laser power meter is about the only instrument you can use to quantitatively measure transmission.

TL;DR: no