1. Because of its principle, all so-called luminous bracelets and bracelets need lighting. After absorbing light, they can shine in the dark, and the storage time of light is very short. There is luminescent powder in the luminous bracelet, that is, the bracelet with luminescent powder will glow. Luminous powder refers to the ability to store light after being irradiated by natural light, fluorescent lamp and ultraviolet ray. After the light stops, it is slowly released in the form of fluorescence. Therefore, light can still be seen at night or in the dark, lasting for several hours to more than ten hours.
There are many kinds of things that glow, both natural and synthetic. The main material of luminous instrument is photoluminescent material. After being irradiated by ultraviolet rays, sunlight or ordinary light, an object has certain luminous performance in a dark environment, which is called photoluminescence material. Also known as redundant luminescent materials and energy storage luminescent materials. Their luminous intensity and delay time are related to the material of the object. There are many kinds of photoluminescence materials, including long phosphors and rare earth long afterglow phosphors.
3. The phosphor is non-radioactive, short in light but long in luminous efficiency, and its luminous life is more than 20 years. Generally, light is released after a short period of time in electric light or sunlight, and the duration is generally 3 hours, which is equivalent to the mode of absorbing energy and finally releasing energy. Luminous jewelry is made of a long and redundant luminous material. Its luminescence principle is that after visible light irradiation, under the condition of weak light or darkness, light is gradually released to produce luminescence.
4. Ordinary lighting needs external light sources, such as fluorescent lamps and ultraviolet rays. Usually, the stored energy will gradually weaken in the dark, and it will turn black in three or four hours at most, and almost no light can be seen. Luminous powder first absorbs all kinds of light and heat, converts it into light energy for storage, and then automatically emits light in the dark. The luminous function is realized by absorbing all kinds of visible light, which can be recycled indefinitely. Especially, it has strong absorption ability for short-wave visible light, sunlight and ultraviolet (UV) below 450nm.