The true nature of glare. The "science of light" that goes beyond 100% light blocking.

"Have you ever felt a strange sense of discomfort, wondering why your eyes feel tired even though you are using a parasol?" Despite blocking UV rays and creating shade, you may still feel a piercing glare in your field of vision.

The source of this lies in "visible light"—the spectrum that we perceive as "light."

When choosing a parasol, UV protection rates and light-shielding ratings have become standard specifications. However, if you are looking to pursue the ultimate level of perfection in an accessory, the next area to focus on is "100% visible light blockage."

This is the standard of a new era, one that does not merely prevent sunburn, but also dramatically transforms our "visual stress" and "perceived temperature."


Controlling "wavelengths" to be gentle on the eyes and block heat

About half of the energy that reaches us from the sun, which we perceive as heat, is contained within visible light. In other words, thoroughly blocking visible light translates directly into improved heat-shielding performance.

100% light-blocking fabric provides a gentle field of vision, like stepping into the shade of a deep forest. You should be able to feel the tension in your eye muscles from the glare dissipate, leading to a surprising reduction in fatigue when you are out and about.

This is where the "inner color" of the parasol becomes important. Even if the exterior reflects light, it is meaningless if reflections from the ground bounce around inside the canopy.

By using a dark color, such as black, on the inside, the umbrella absorbs scattered light and minimizes the burden on your eyes. From an optical perspective, this is the correct answer for an effective "tool."


"Honest Measurement" behind the specifications

To prove this performance, we prioritize the metric of the "visible light blockage rate."

While general light-shielding ratings measure the "amount of brightness," this method uses a spectrophotometer to precisely measure each individual component (wavelength) of the light spectrum.

However, we deliberately avoid using the term "total light blockage." Even with the most superior fabric, there is always a non-zero possibility that a tiny amount of light might leak through the stitching or embroidery when crafted into a finished parasol.

While we strive for "100%" fabric performance, we also believe that honestly conveying the limitations of the product itself is the hallmark of a specialized manufacturer.

Experience a quiet, cool field of vision that exists beyond mere numbers. We invite you to step into an unprecedentedly comfortable summer with an umbrella that controls even visible light.


アンベル株式会社 CEO

執筆者:辻野義宏

30年以上に渡って傘の開発および研究を続けている。革新的な機能を追求し続ける日本の傘ブランド「AMVEL (アンベル) 」では、時代によって変化するベストを追求し、最先端の技術を駆使した傘をお届けしています。