CHAPTER 6 - Types of Sunglasses Lenses
- Gradient Lenses
- Polarized Lenses
- Photochromic Lenses
Gradient Lenses
What are gradient lenses?
Gradient lenses are sunglasses that tinted lenses from the top so that the upper part of the lens has the darkest shade. These lenses provide sun protection and make you look stylish and classy. Also, the best part is that tinted lenses can be placed on any sunglass frame style.
What are double gradient lenses?
Double gradient lenses are darker on the top and bottom and lighter in the middle. These lenses are useful in eliminating glares from the sun, snow, and asphalt. Due to their adaptability, these lenses can be fitted into many sunglass frames.
Polarized Lenses
What do polarized lenses mean?
Polarized lenses are the best choice for people who are always involved in outdoor activities. Sunglasses with polarized lenses are a good choice for reducing glare, providing a clear vision, and protecting your eyes while doing outdoor activities involving water or snow.
Photochromic Lenses
What are photochromic lenses?
Photochromic lenses are a type of optical lens that appear like regular lenses but become dark in the presence of light or bright areas. Since specific molecules in the photochromic lenses are affected by ultraviolet rays from the sun, it can cause the clear lens to become dark.
Photochromic Lenses Pros and Cons
Photochromic lenses can adjust to lighting conditions on their own. But these types of lenses cannot filter out light when you are in a moving vehicle and need to have a pair of clip-on photochromic lenses. Due to their compatibility with anti-reflective coatings, they can be added to almost all lenses and designs. Some facts about photochromic lenses:
- Photochromic lenses become dark when directly exposed to UV lights
- So, they do not become dark inside a car. However, there are some specialized lenses from Transitions brand that become partially dark inside a car.
- Photochromic lenses can become dark in overcast conditions if there is UV radiation in the atmosphere
- Photochromic lenses can become dark under artificial UV light sources like UV lamps for mosquitoes, metal halide lights.
