Transition lenses are activated when exposed to sunlight. The stronger the sunlight the darker the lenses will get. However, remember that any glass (like a car windshield, window, etc.) can absorb UV rays and the lenses might not darken as much as when you are outside in direct sunlight.
What light activates transition lenses?
UV light
Why won't my transition lenses darken?
Temperature affects how Transitions change. When they're hot (like in the summer), the lenses will change slower and won't get as dark. ... When Transition lenses do wear out, they will take on a yellowish tinge when they're clear. They will no longer get as dark at that point.
Is there a break in period for transition lenses?
Transitions lenses do not need a break in period. Regardless of color, all that is needed is UV exposure to start the reaction.17 dic 2006
Can you make your transition lenses darker?
Consider Tinting Your Lenses If you're particularly photosensitive, you might want to consider adding some additional tinting to your transition lenses. This will keep them from reverting to a completely clear state; it will also allow them to reach a darker shade during transitioning.4 may 2021
How do you make transition lenses stay dark?
The Effect of Temperature If you move into a shaded area outdoors, they will stay darker longer than they would on a warm day. When you move into a shaded area when the temperature is warm outside, the molecules will be quicker to respond to the reduced UV and they will begin to lighten up more quickly.12 nov 2018
Do transitions filter blue light?
Transitions® lenses protect your eyes from harmful blue light both outdoors and indoors. ... Transitions® Vantage™ lenses filter 35% of harmful blue light indoors and 85% outdoors.
How do transition lenses work?
How do Transitions lenses work? Transitions lenses contain special patented photochromic dyes that cause the lens to activate, or darken, when exposed to ultraviolet rays from sunlight. When the UV light diminishes, the lenses fade back. ... They are clear indoors and darken outdoors in bright sunlight.
Does temperature affect transition lenses?
All Transitions lenses are temperature-dependent. Temperature affects the degree to which your lenses darken and the speed with which they clear again. ... At very high temperatures, Transitions Lenses will not be as dark due to the thermal process affecting the molecules. This is a normal reaction for photochromic lenses.10 jul 2011
Why do transition lenses get darker in cold weather?
When it is colder outside you may notice that your Transitions lenses seem to get darker than they do when it is warmer. This is because the molecules move more slowly when they are cold, which means when they are cold they will fade back from dark to clear more slowly.12 nov 2018
Are transition lenses heat sensitive?
All Transitions lenses are temperature-dependent. Temperature affects the degree to which your lenses darken and the speed with which they clear again.10 jul 2011