MCR Safety VL2 Photochromic Safety Glass provides the industrial worker with a single option for many lighted environments. This auto tinting performance technology shifts from clear to gray in 30 seconds and will migrate from gray to clear in 180 seconds. This will allow you to work in applications that move from indoor to outdoor settings or extreme light settings to low light settings by eliminating the need to remove your safety glass to see safely. Coated with MAX6® Anti-Fog protection for 6 times better fog resistance than standard anti-fog.
(5-second increments)
As you can see from the numbers below, it does not take long when transitioning from clear to gray:
VLT, when a lens is at full gray, is more of a medium gray due to it not reaching a complete 13% VLT.
(10-second increments)
One thing stands out from the numbers below: it takes longer to reach clear going from a gray lens. Here are the VLT measurements as they transition:
To reach an 84.8% VLT clear lens, a lens will take a total of 5 minutes of transition time. So, anyone needing fast-acting clear glasses should maybe think twice about selecting a photochromic lens.
Photochromic lenses are temperature-dependent, which means transitional performance varies. So, it’s important to remember these two factors when thinking about transition time: