| 简介 |
Fluorescent lamp 100 has a light color with a correlated color temperature higher than 10000 [K] and lower than 17000 [K] and Duv in a range of −2.5 to 5, comprising arc tube 10 and phosphor layer 20 which includes at least : a red emitting rare-earth phosphor with a main emission peak (11) in 605-625 [nm]; a green emitting rare-earth phosphor with a main emission peak (12) in 540-550 [nm]; and a blue emitting rare-earth phosphor with a main emission peak (13) in 440-460 [nm], an action function efficiency of melatonin suppression for per unit luminous flux is higher than 1.0, and a general color rendering index Ra is 80 or higher. With the stated structure, the fluorescent lamp 100 suppresses melatonin secretion thereby achieving effects of adjusting biological rhythms and promoting wakefulness of living bodies, and also remedies the shortcomings in color rendering characteristics of the light source. |
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