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Introducing a coating to control blue light exposure

Why is the sky blue?
Most people have probably wondered about this at some point.
It is said that Lord Rayleigh, a British physicist in the late 19th century, was the first person to answer to this question.
The light from the Sun looks white, but it actually contains various colors (wavelengths) of light.
In the spectrum of visible light, blue light with short wavelengths tend to bounce off molecules and dust in the atmosphere and scatter all over the sky. This is why the sky appears blue.

We are exposed to various types of light, including sunlight in daily life.
A certain type of blue light is gaining increasing attention in this information age.
It is the blue light emitted from the displays of digital devices.
While the widespread use of smartphones and computers has made many activities more convenient, more and more people are suffering from symptoms of eye strain called VDT (Visual Display Terminals) syndrome, which is increasingly causing concern. The blue light emitted from digital displays is considered to be a cause of such symptoms.
Blue light with higher energy levels affect our optical health. Such light also tends to be diffused and is believed to cause flickering in vision.

Nikon has been quick to focus on this issue and became the world's first company to develop an innovative lens coating technology to address it. This technology was originally used to increase light transmittance and Nikon successfully applied it to coat ophthalmic lenses to reduce blue light exposure.
Ophthalmic lens coating for cutting blue light has created new applications for ophthalmic lenses, challenging the notion that they are only for people with eyesight problems.
By being the first to meet the needs of the age as they arise, we offer things the world has never seen before.
Nikon looks into the future, always keeping one step ahead.

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