Note: Absorption vs. Reflection

Nowadays, we spend a large part of our day in front of screens: at the office, at home, on the go, and even just before going to bed. This time spent in front of screens constantly exposes us to artificial blue light. The consequences are increasingly well documented: eye strain, sleep disorders, and adverse effects on our biological clock and, consequently, on our hormones.

It is therefore not surprising that blue light blocking glasses are becoming increasingly popular. But this is where many people are mistaken: not all blue light blocking glasses offer the same level of protection. On the contrary, most glasses on the market use a simple coating that reflects only a fraction of the blue light. At Alina, we believe this is insufficient. We develop glasses that deliver on their promise: effective protection. And that starts with understanding the difference between reflection and absorption.

Absorption versus reflection: a fundamental difference

Blue light blocking glasses work in two ways: by reflection or absorption. Their effectiveness depends largely on the technology used.

Reflection: surface protection

Many inexpensive blue light blocking glasses use a coating that reflects blue light. This seems logical: blue light is supposed to be reflected. In reality, its effectiveness is limited:

• Only 10 to 20% of blue light is actually reflected.

• The light that strikes the glass directly still reaches the eye.

• The coating may become damaged or worn over time.

• Reflection depends on the angle of incidence of light.
  

In other words, a reflective coating offers only partial and irregular protection, and often loses its effectiveness over time.

Absorption: core protection

At Alina, we have deliberately chosen a different approach. Our glasses are designed to absorb blue light rather than reflect it. The technology is integrated into the lens, rather than placed on its surface. This offers several major advantages:

• Harmful blue light is immediately absorbed and neutralized (converted into heat). Rest assured, you will never feel this heat.

• Operation is constant, regardless of the angle of incidence of the light.
  

• The filter is durable. Its effectiveness remains unchanged, even after intensive use.

Our technology, adapted to the time of day

We offer two types of glasses, each optimized for a different use:

Evening glasses: Our red-lensed glasses absorb almost the entire blue light spectrum (380–520 nm). The lenses are impregnated with pigments that absorb light and convert it into harmless heat. These glasses are therefore ideal for use in the evening, in low light conditions, or before bedtime. They help maintain a natural sleep rhythm by preserving melatonin production.

Daytime glasses: Designed for daytime use, our transparent (light yellow) glasses offer an excellent balance between protection and aesthetics. Although they appear colorless, they incorporate an advanced pigment layer that specifically absorbs harmful high-energy blue light (380–455 nm). This eliminates any visible coloration and prevents color distortion. Ideal for people who work long hours in front of a screen.

Your eyes deserve better

At a time when we spend hours every day in front of screens, investing in effective blue light blocking glasses is essential. The difference between reflection and absorption is not just a technical issue: it has direct consequences on your health, sleep, and productivity. Cheap solutions may seem attractive, but they rarely offer the promised protection.

At Alina, we combine cutting-edge technology with thoughtful design. Because we believe that your body deserves to be truly protected, today and tomorrow.