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发明公开
CN102468414A 脉冲LED白光发光装置 失效 - 权利终止

脉冲LED白光发光装置
摘要：
本发明涉及一种脉冲LED白光发光装置，属于白光LED制造技术领域。本发明LED白光发光装置，包括LED芯片和能够在此LED芯片激发下发光的发光材料，其特征在于：所述发光材料的发光寿命是1-100ms(优选5-20ms)，所述LED芯片发出的光与发光材料发出的光的混合色为白色；其中所述LED白光发光单元采用的驱动频率优选为50-150赫兹。本发明由于使用特定寿命的发光材料，当电流周期变化时，发光并不随着激发光源的消失而消失，而会持续到下个周期开始，从而弥补了由于脉冲电流关断时导致的LED芯片的发光频闪的影响，使白光发光装置在脉冲周期的光输出保持稳定，从而消除了脉冲频闪发光对人眼的伤害。
摘要（英）：

The invention relates to a pulse LED (Light Emitting Diode) white light emitting device, belonging to the technical field of manufacturing white light LEDs. The LED white light emitting device comprises an LED chip and a luminescent material capable of emitting lights under excitation of the LED chip, and is characterized in that the luminescence service life of the luminescent material is within 1-100ms (preferably 5-20ms), and a kind of mixing color of lights emitted by the LED chip and lights emitted by the luminescent material is white, wherein the driving efficiency utilized by an LED white light emitting unit is preferably 50-150Hz. According to the pulse LED white light emitting device disclosed by the invention, the luminescent material with the specified service life is utilized, and when a current period changes, the emitted lights do not disappear along the disappearance of an excitation light source, but continue till a next current period starts, thus the influence of stroboflash of lights emitted by the LED chip caused by shut-off of pulse current is compensated, the light output of the white light emitting device during a pulse period keeps stable, and the eye damage due to pulse stoboflash light emission is eliminated.

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