It stores light energy and continues to shine in the darkness!
Inside the phosphorescent glass, the movement of electrons occurs due to light energy, and these electrons are temporarily stored in areas called traps, which gradually return to their original state, resulting in prolonged luminescence.
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Phosphorescent glass stores light energy and continues to glow in the dark. - Phosphorescent with transparent glass - Long-lasting glow for several hours or more - A completely new type of phosphorescent material using rare earth terbium
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Japan is one of the world's leading producers of optical equipment, with optical glass being a key component. Since its establishment in 1953, SUMITA has been engaged in the world of light and glass as one of the few expert companies in this field. Since the 1960s, we have pursued our unique optical fiber technology. Additionally, we maintain a consistent production process from raw materials to final products, and there are very few companies globally that can mass-produce glass optical fibers at a scale of up to 700,000 km per month. We have earned high trust not only in the domestic market but also in overseas markets. Our optical fiber materials offer excellent cost performance and are applied in a wide range of fields, including medical devices, telecommunications, image processing, measurement, sensors, and lighting.