Solid state lighting is a new semiconductor lighting source, which takes advantage of the energy saving, no-pollution and long lifetime.

固体白光照明节能省电、无污染、长寿命，是替代白炽灯和荧光灯的新一代半导体光源。

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It is shown hat the process of virtual photons shortens the lifetime of atom in excitation state, and remits in drift of energy levels of the ground state of atom.

结果表明，虚光子过程使原子处在激发态的寿命缩短，并导致原子的基态能漂移。

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A formula of energy storage in three-level system is deduced, which is different from the previous results in which the upper state lifetime is taken as the energy storage time.

推导了准三能级系统的储能公式。此公式与以前的结果不同，认为有效储能时间不等于上能级寿命。

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