Sunglasses eyewear

Aside from an aesthetic function, protection against the effects of sharp sunlight and UV radiation is still the main function of sunglasses. The entire electromagnetic spectrum of sunlight is compound of a set of waves continuously changing frequencies.

Nowadays, each of us can choose hairstyle, make-up, clothes and accessories to mold a personality. People should feel comfortable and at the same time, draw attention by their appearance to some extent. The same holds for sunglasses. They are not just a protective device against sun, but primarily, they are a specific accessory reflecting your personality. Their design also subjects to fashion trends.

Light spreads throughout the space in waves, which oscillate to every direction of the optical sphere. If the light reflects from a shiny non-metal surface (glass, snow, water surface …), it becomes polarized, which means that its waves move only in two dimensions: horizontal and vertical.

Recently sunglasses have become an essential accessory for almost all of us. We do not use sunglasses only for a summer season, on the beach or mountains but now they are more commonly used as a fashion accessory. Now fashion sunglasses are not only a privilege of film stars, athletes and other celebrities but they have become a component of image for ordinary people. Nowadays sunglasses generate the image but their major role should remain to be a protection of our eyes against harmful ultra-violet radiation.

Sunglasses during the history have been used in different forms around the world for a very long time. Roman emperor Nero used to watch gladiators through a shiny green emerald, which protected him from sun blindness. The light also disturbed the Eskimos, when it reflected from the snow. As a protection they used a piece of leather with holes in it. The first invention in history of the actual sunglasses is dated between 1268 and 1289.