What’s the difference between Ballistic Eyewear & Safety Glasses?
Ballistic rated safety glasses and sunglasses are becoming one of the fastest growing segments of protective eyewear, however there seems to be a considerable amount of confusion on what actually classifies eyewear as ballistic rated.
I’ve read several comments in forums, blog posts and customer emails where the “Z87″ markings on a frame or lens are mistakenly interpreted as proof of ballistic certification. The “Z87″ markings on safety glasses and goggles indicate the eyewear is compliant with the ANSI Z87.1-2003 High Impact and ANSI/ISEA Z87.1-2010 industrial safety standard for eye protection. Although the Military Ballistic Standard 662 uses some test similar to those used in the “Z87″ standards, the requirements are much different.
There are two main Military Ballistic Standards used for testing, MIL-PRF-31013 (spectacles) and MIL-DTL-43511D (goggles). Here’s a chart from Smith Optics Elite showing the differences in projectile size, weight and velocity for each test.
As you can see in the above chart there is a significant difference between the Military Ballistic Standards and ANSI Z87.1, in fact the MIL-PRF-31013 test is producing approximately 7 times more impact energy than the ANSI Z87.1 standard.