How do I use OIO Loop to see the spectrum?

Simply hold OIO Loop at a 45° angle while directing it at OIO bulb. You should see a rainbow stretched along the length of the lens. For lights in the daytime, you’ll want to see bright blue close to the green area. For lights in the evening, there shouldn’t be any blue near the green,…

Is OIO Loop waterproof?

OIO Loop has no electronics, but water may leave a residue on the lens and degrade its ability to split the light into a spectrum. Excessive contact with the lens may also damage it. Try to keep the lens clear of dust and water.