Sunglasses are an essential accessory that not only protect our eyes from the harmful effects of the sun but also add to our fashion statement. But did you know that the quality of sunglasses is not just determined by their appearance, but also by their technical specifications? Lucky for you, Peeq Reversible Sunglasses takes these specifications seriously. One such specification that is often overlooked is the Abbe value.
The Abbe value is a measure of the dispersion of light through a lens material. It is determined by the refractive index of the lens material at different wavelengths of light. A higher Abbe value indicates less dispersion of light, which means the lens material has better optical clarity.
Why is the Abbe value important for sunglasses?
When light passes through a lens, it refracts or bends. The degree of bending is determined by the refractive index of the lens material. However, different wavelengths of light bend at different angles, which can cause chromatic aberration or color fringing. This is especially noticeable when looking at objects with high contrast, such as black text on a white background. The result is a blurred or distorted image that can be uncomfortable to look at.
Sunglasses with a low Abbe value can exacerbate this effect, leading to eye strain, headaches, and even dizziness. This is because the lenses are not able to properly filter out the different wavelengths of light, leading to a distorted image.
On the other hand, sunglasses with a high Abbe value provide better optical clarity, reducing the risk of these side effects. This is especially important for people who spend a lot of time outdoors or driving, where high contrast objects are common.
How is the Abbe value determined?
The Abbe value is determined by measuring the refractive index of the lens material at different wavelengths of light. This is done using a device called an Abbe refractometer, which measures the amount of refraction at three different wavelengths of light (usually blue, yellow, and red). The Abbe value is then calculated based on these measurements.
Different lens materials have different Abbe values. For example, glass lenses typically have a higher Abbe value than plastic lenses. However, glass lenses are heavier and more prone to breakage, while plastic lenses are lighter and more impact-resistant. Peeq reversible glasses utilize a nylon based lens which offers the optimal combination of clarity and durability (unbreakable).
When shopping for sunglasses, it's important to consider not just their appearance but also their technical specifications, including the Abbe value. Sunglasses with a high Abbe value provide better optical clarity, reducing the risk of eye strain, headaches, and dizziness. Different lens materials have different Abbe values, so it's important to choose a material that meets your needs and preferences. With this knowledge, you can make an informed decision and choose sunglasses that not only look great but also provide optimal protection for your eyes. Peeq. Patented reversible glasses.