Unverified85% confidenceDecision RuleTime unknown
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
1
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85%
Confidence
Long-term
Relevance
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Unverified'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88% similarUnverified护眼灯必须通过IEEE 1789-2015豁免级（无风险）频闪标准，即在3.125Hz以下调光深度极低；标注'无可视频闪'但无第三方检测报告的产品不可信，PWM调光频率应≥3000Hz或采用DC恒流调光86% similarUnverified无频闪应以IEEE PAR1789标准的『无光危害等级/豁免级』为准，标称『DC恒流驱动』比『高频PWM调光』更彻底无频闪，低亮度调光时PWM频闪风险更高85% similarUnverified无频闪需看RG0豁免级（IEC/TR 62778光生物安全）+ 无可视频闪认证，普通PWM调光在低亮度档位仍可能有频闪，直流恒流调光（DC调光）更稳定85% similarUnverified无频闪要认准通过IEEE 1789标准的'无危害'等级（豁免级），或看RG0蓝光豁免认证；宣传语'DC恒流驱动'比'PWM调光'更能避免低频频闪84% similar
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