Photochromic glasses are specialty lenses with the ability to transition from one type of lens to another. In Winston Bentley Eyewear’s case, from blue light blocking lenses to polarised lenses. In short this means our specialty photochromic glasses with intelligent lens technology can essentially morph from blue light blocking lenses indoors, to polarised sunglasses outdoors. The transition is automatically triggered by exposure to UV light from the sun, and the transition time is just 13 seconds.
What is the difference between a photochromic lens and a polarised lens?
A polarised lens is tinted permanently dark. They do not have the ability to alter in colour. A Winston Bentley Eyewear polarised TAC lens has the ability to reduce glare on highly reflective surfaces, such as bitumen, water, snow, white sand and the shiny surfaces of your car.
A Winston Bentley Eyewear photochromic lens on the other hand, has the ability to start crystal clear and with exposure to UV light turn dark into a polarised state. When you return to little or no exposure of UV light the lenses will then revert to their original clear state, they can also adjust to the level of brightness, for example standing under a tree the lens may be tinted polarised.
How do photochromic lenses work?
Teeny tiny molecules of silver halide and chloride are embedded within Winston Bentley Eyewear’s photochromic lenses. These molecules are invisible and clear until they are exposed to sunlight or UV rays. A somewhat magical, chemical process takes place when exposed to the sunlight or UV rays and the molecules move, change shape, altering their colour appearance and absorb the sunlight or UV light.
What are 6 advantages of photochromic lenses?
There are many advantages when it comes to photochromic lenses, here are the top 6:
- Photochromic lenses can adapt to all environmental changes (indoor, outdoor, high or low brightness / exposure to UV rays).
- Winston Bentley Eyewear photochromic lenses provide extreme comfort during activities, since they reduce eyestrain and glare in the sun.
- No prescription is required for them.
- Photochromic lenses provide daily protection against UV rays, by absorbing up to 100% of UVA and UVB rays.
- They are very convenient! Allowing you to stop juggling between your pair of clear anti blue light glasses and your polarised sunglasses.
- They are available in different styles, shapes and frame materials.
Why do photochromic glasses not work in my car?
Photochromic lenses generally change their tint density when exposed to certain kinds of light. Specialty photochromic lenses that only react to UV light, do not work to their full potential when inside your car because modern car windscreens filter out UV, slowing and limiting the reaction of the lenses.
Can you remove the transition from the lens?
In short, the answer is no. Transition lenses have a chemical within the material and is not possible to remove it. The colour changing capability within the material of the lens can't be removed just like any kind of the normal coatings. If you don't want the photochromic lens in your glasses, you can get a new pair of glasses or lenses without transitions.