Luminous powder is the material which may automatic illuminating in the black hidden place, its principal constituent is the rare earth, belongs to the inorganic kind of material. Luminous powder absorbs each kind of light and the heat first, transforms the energy of light storage, then in darkness automatic illumination, through absorbs each kind of visible light realization illumination function, it is not including the radioactive element, and may use in circulation for the infinite number of times, it has very strong absorbing ability especially to 450 nanometer short wave visible light, the sunlight and the ultra-violet rays (the UV light) .

In the practical life, people, as per itslong time illumination characteristic of the luminous powder, makes the weak illumination photo source which has the special use in the military branch, spreads this material on the aeronautical instrument, the clock and watch, the window, the machine each kind of switch symbolized, gate hand and so on place, also the available each kind of diaphanous plastic suppresses to plant the mark, the part, the thing together (for example power switch, plug, fishing hooks and so on). Periphery these illumination part after the light illumination, after at night or the accident power cut, the lightning got out of bed waits for it still continually to shine, causes the people to be possible to distinguish the direction, brought conveniently for the work and the life. Mixes in the textile the night light material superfine granule, causes the color to be brighter, the child puts on has the night light textile, may reduce the traffic accid

1.Avoids using under the acidic environment (Al2O3 and acid can have response).
2.Avoids to be contact with the water, seals the preservation as far as possible; (Can absorb moisture content in air, causes the luminous powder to be changed into black non luminous and agglomerates).
3.Avoids to be contact with the metallic (being able to affect the luminous powder to be saturated condition, affects its illumination).
4.Avoids high speed friction in high temperature (being able to change the existing structure of the luminous powder).
The luminous powder which has the radioactive, mixes the radioactive substance in the luminous powder, using the radioactive substance to send out the beam to stimulate the luminous powder to keep illuminating unceasingly, this kind of luminous powder can illuminate very long time, but it application scope is very small because of its virulent harmful and the environmental pollution.