Sunglasses with the Unique Crizal Sun™ Anti-Reflective (AR) Technology

Crizal Sun technology is unique because AR is applied to the back surface only, protecting the wearer from backside glare and protecting the color integrity of the lens. In addition, Crizal Sun lenses utilize the industry-leading Crizal® Alizé® technology which provides scratch protection and ease of cleaning with a double-sided hard coat and super-hydrophobic top coat, creating the most durable, easy-to-clean sun lens on the market.

Sunglasses without AR Technology

For a person wearing glasses, reflections are an annoyance that interfere with vision and create discomfort, leading to eyestrain. In Sunwear lenses, the effects of backside reflections are particularly uncomfortable because they are worn in bright environments where reflective surfaces such as water, snow, sand and pavement are often present. The wearer’s vision is hindered by backside glare, causing the eye to adjust between undesirable light and useful light. (See Exhibit A)

In addition, sunglasses are worn outside, bearing all the elements and are often not protected by a glasses case when not in use. This results in dirt, smudges and scratches because the lens is not protected.

Sunglasses with Traditional AR Technology Applied to Both Sides

The problem with typical sunglasses combined with AR technology is that they are designed to achieve opposite goals: sunglasses aim to block the amount of light entering a lens where AR technology aims to allow more light to enter the lens. In addition, applying AR to the front side of a regular pair of sunglasses can cause color changes to the lens, resulting in an undesirable color change. (See Exhibit B)