Unverified80% confidenceDecision RuleTime unknown
带DC调光或PWM高频调光（≥1250Hz以上或标注无频闪）的灯泡才能护眼，低价灯泡低亮度时用低频PWM，调暗后频闪明显加剧
1
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80%
Confidence
Long-term
Relevance
-
First Seen
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Unverified亮度调节精度上，PWM调光在低亮度档可能产生频闪，选择支持DC线性调光或高频PWM（＞3125Hz）的产品在低亮度下更护眼92% similarUnverified调光方式优先选DC直流恒流调光或高频PWM（＞3125Hz），低频PWM调光（尤其调暗时）会产生肉眼难察觉的频闪，是低价灯的隐藏坑91% similarUnverified亮度调节需支持无级/PWM高频调光（≥3000Hz以上或DC调光），低频PWM调光在低亮度下频闪明显，长期夜间使用易造成眼疲劳和头痛91% similarUnverified真正无频闪需认准DC调光而非高频PWM调光，PWM调光频率≥3840Hz才能基本消除频闪对眼睛的影响，低于此值长时间使用易疲劳91% similarUnverified调光方式优先选DC直流调光或高频PWM（≥3125Hz），避免低频PWM调光；低频PWM在肉眼不可见的情况下仍会造成视疲劳累积89% similar
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