Abstract
AbstractThe efficiency of EEFLs with the new glass tube of high dielectric constant K∼6.6 and low dielectric loss tan δ, reaches 45 lm/W which is ∼ 20 % higher than 38 lm/W in the conventional glasses of K ∼ 5.5. And this new glass tube EEFL also shows a high reliability against pinholes.
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