T8-8 980nm-1064nm-2940nm ND YAG Er YAG Infrared IR Laser Protective Goggles Glasses CE OD+4

1. This is an IPL laser protection goggles, it can work for nearly full wavelength by laser which human eyes sensible. as you know IPL uses lower power laser for full wavelength. some IPL machines can cover blue, yellow, green and red laser. but the output of them is no more than 10mw. so that this goggles is suitable. but this machine brings a problem. ALL sometimes is not as good as unique. acturally, we do recommend people buy laser protection goggles according to their wavelength. for example, if your laser is 808nm, we recommend a 808nm goggles. this kind of goggles works best at this wavelength.  but if you buy a full wavelength goggles, it may be not as good as a spedial wavelength goggles.

2. For the T: some people do not know what the T mean, T here means transparency. for a special wavelength goggles, a T=30% means there are 30% laser can pass through. for a full wavelength goggles, T here means an average level. as you can see in the picture, when you use a 405nm laser for the goggles, there are about 30% can pass through. if you use a red/green laser, there is about 50% pass through. if we use a 1064nm on the goggles, it is about 20%. so that we get an average value for T=30%