---
title: Effective UV Protection
url: "https://www.filtral.com/en/sunglasses/facts/effective-uv-protection/"
description: Thanks to the UV400 lenses, Filtral glasses also protect you from the high-energy photons in the visible violet-blue range of sunlight.
date: 2018-09-04
modified: 2019-01-14
locale: en_GB
---

# Effective UV Protection

EFFECTIVE UV PROTECTION
=========================

All Filtral sunglasses provide 100% protection against dangerous UVA, UVB and UVC rays. In addition, part of the harmful short-wave blue components of visible light are also filtered out – without distorting colour reproduction.

 **UVC rays** (up to 280 nm)
 Extremely short wavelengths which do not penetrate the earth’s atmosphere.

**UVB rays** (280 nm-315 nm)
 Rays with this wavelength cause sunburn and damage the eye tissue. All Filtral sunglasses filter out UVB radiation.

**UVA rays** (315 nm-380 nm)
 Rays with this wavelength tan the skin but also lead to premature skin aging and can damage eyesight.

 **Violet/Blue light** (380 nm-500 nm)
 Rays of this wavelength act like UVA rays, but reach the visible light spectrum. Therefore, Filtral sunglasses filter out part of the harmful short-wave blue components but maintain the necessary spectrum range to ensure correct colour reproduction.

**Green and red light** (500 nm-780 nm)
 Rays in the green and red spectrums are not dangerous to people’s health.

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