A special frame with an "eyecup"-shaped lens frame that fits the face. In addition, the ``Flex Frame'' allows the frame part to move flexibly, providing a perfect fit while maintaining high protection performance. Japan fit design that pursues wearability.
The unique "rubber nose pad" provides a stable fit and a soft, comfortable fit for the nose area, which is prone to slipping.
Double-sided hard coat & anti-fog lenses. A lens with excellent safety and optical performance that has been treated with a unique coating. Ensures comfortable visibility.
"Non-slip rubber temple" provides a stable hold. It fits softly without slipping.
Blocks over 99.9% of harmful ultraviolet rays (below 380nm). Designed to fit the curve of the face, it prevents not only UV rays from entering through gaps, but also harmful rays from entering during welding.
[✅ Strengths & Recommended Points of These Shading Glasses]
●Reliable Compliance with JIS Standards
This model is a shading protective eyewear that meets the Japanese Industrial Standards (JIS). It clears strict quality and safety standards, providing peace of mind when used on work sites.
●High Shading Performance — Shade #5
Shade #5 lenses are suitable for environments with intense or harmful light, such as gas welding and surrounding welding areas. This level of shading effectively protects your eyes from glare and harmful radiation.
●Polycarbonate Lenses with Dual Hard Coating & Anti-Fog Treatment
The lenses are made of impact-resistant polycarbonate. Both sides feature hard coating and anti-fog (PET-AF) treatment, making them scratch-resistant and maintaining clear vision even during extended use. They also resist fogging caused by masks or breath, ensuring stable visibility.
●“Japan Fit” Design That Conforms to Facial Shapes
The frame shape and weight balance are designed based on extensive Japanese head data. This reduces fatigue and slippage during long work hours, making it ideal for professional site work.
●Comfortable Fit with Soft Nose Pads & Non-Slip Temples
Soft rubber nose pads and non-slip rubber temple arms provide a gentle fit and prevent slipping or discomfort during work.
●Replaceable Lenses
If the lenses get scratched, dirty, or lose their anti-fog effectiveness, they can be replaced with separately sold spare lenses. This feature enhances the long-term usability of the glasses.
●High Quality & Reliability Made in Japan
Both the frame and lenses are made in Japan. Designed with reliable materials and craftsmanship, these glasses prioritize protection against strong light, ultraviolet rays, and harmful radiation.
[🛠 Recommended Usage Scenarios]
●Tasks involving strong light or sparks, such as gas welding or metal cutting
Shade #5 lenses protect eyes from glare and harmful light, ensuring safety.
●High-temperature furnace work or casting environments where heat and light coexist
Polycarbonate lenses with anti-fog treatment resist yellowing and fogging, allowing for long-duration work.
●Laboratory or factory light irradiation work, infrared tasks, etc.
UV-cut functionality and shading performance help reduce eye strain and potential damage.
●Ensuring safety for weld spectators or passersby
Effective not only for operators but also for observers or people nearby, protecting their eyes from intense light.
[✨ Summary]
The "Yamamoto Kogaku Shading Glasses YW-390" combine powerful shading performance with high safety and reliability. Polycarbonate lenses with dual hard coating and anti-fog treatment maintain clear vision and comfort during extended work. Lightweight and designed with a “Japan Fit” for Japanese facial features, they provide stable wear even with hairstyles or helmets. With replaceable lenses, they are also cost-effective for long-term use. Highly recommended for anyone prioritizing eye safety in environments with intense light or harmful radiation, such as welding, metalworking, and furnace operations.