SEIKO OPTICAL PRODUCTS

Refractive Index (Thinness)

Our glass lenses are all plastic lenses.
The more material with a large refractive index is used, the more it is possible to have a thinner finish in lenses of the same power.

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UV-cut Coating

Sunlight contains ultraviolet rays such as UV-A waves that are known to tan the skin and form blemishes on the skin or cause skin to sag and UV-B waves that are believed to cause skin aging and form skin blemishes or freckles. Lenses furnished with a function to cut out these harmful ultraviolet rays are called "UV-cut lenses."

Seiko’s UV-cut process results in the elimination of more or less 100% of ultraviolet rays of 400 nm or less.

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Bright, Clear Anti-reflective Coating

Prevents light reflection to give bright, clear vision

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Scratch-resistant Coating for Prevention of Lens Damage

This is a process that improves the resistance of plastic lenses to scratches, the greatest drawback of this type of lens. Normally, all SEIKO lenses are provided with a coating for protection against scratches as standard.

"Super-Resistant-Coat" provides the ultimate protection against damage.

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Grime-resistant Coating

The grime-resistant coating is a new high-quality coating that realizes enhanced lens surface water-repelling and oil-repelling performance.
This groundbreaking coating features a remarkable improvement in the contact angle between the lens surface and the attached matter, demonstrating the ability to quickly repel substances such as water and oil. In addition, compared to older products, the coefficient of friction on the lens surface is 60% lower, making it possible to easily wipe off grime that contributes to lens fogginess such as sebum, fingerprints and substances that become attached while performing housework, including for example, oil film and cosmetics.

A grime-resistant coating makes it so much easier to care for spectacles and greatly enhances usability.

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Shock-resistant Reinforced Coating

Up to the present, spectacle lens safety has been based on the widely-known American FDA (Food and Drug Administration) standards. Combining its cutting-edge technologies, SEIKO has developed a shock-resistant coating that achieves a degree of shock resistance even higher than that defined in FDA standards, resulting in greatly-enhanced spectacle safety.

Product Names
SEIKO、STARVISION / High impact coat
PENTAX / PR Coat

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Anti-static Coating

Static electricity readily accumulates on ordinary plastic lenses, attracting substances such as dust and pollen. This coating features a special film (conduction film) that releases static electricity, making it difficult for substances such as dust and pollen to become attached to the lens surface.

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Anti-fogging Coating

The anti-fogging coating is a new type of coating that prevents lenses from fogging when exposed to changes in temperature as the wearer moves from one location to another.
Powerful anti-fogging effects and high sustainability can be realized by carrying out simple, regular maintenance by coating the coating film that features high hydrophilicity with maintenance cleaner with an even greater degree of hydrophilicity.

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Reducing blue light

By reflecting and reducing the short wavelengths (blue light) that cause glare and flickering are reduced with an improvement in visibility

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