Unverified85% confidenceDecision RuleTime unknown
'无频闪'需看是否通过频闪豁免（波动深度<8%）或过IEEE 1789无频闪标准，很多低价灯用PWM调光在低亮度时频闪明显
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Unverified看重护眼选无频闪认证（不闪烁或频闪深度＜5%）+ 显色指数Ra≥90，低价氛围灯常用PWM低频调光在低亮度档位出现明显频闪90% similarUnverified无频闪要看'无危害频闪'认证（波动深度符合IEEE PAR1789标准），普通LED驱动在低亮度调光时频闪反而加剧，PWM调光台灯低档位易频闪，DC恒流调光更安全89% similarUnverified低亮度下的调光平顺度和无频闪同样关键：便宜的PWM调光灯在1%~10%低亮区间会闪烁或跳档，拍高速快门/慢动作会出现横纹，需选支持高频无频闪调光的灯89% similarUnverified频闪判断认准'无可视频闪'并要求提供IEEE PAR1789豁免级或exempt级检测报告，PWM调光的低价灯在低亮度档位往往频闪严重88% similarUnverified看重护眼选标注无频闪或频闪深度＜5%（低于Pst≤1.0标准）的灯泡，PWM调光频率应≥3125Hz，低价灯泡低亮度时易出现肉眼可见频闪87% similar
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