Unverified88% confidenceDecision RuleTime unknown
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
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Unverified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89% similarUnverified追求健康护眼应选支持PWM频率≥3125Hz或DC恒流调光的灯带，并有无频闪/低蓝光认证（如莱茵TÜV Low Blue Light、IEEE 1789无频闪）；低价灯带常用低频PWM调光，调暗时频闪加剧89% 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88% similarUnverified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87% similarUnverifiedPWM调光频率过低会产生频闪，防蓝光灯带若采用低频PWM调光反而伤眼，选购调光款需确认调光频率≥3000Hz或采用DC恒流无频闪调光87% similar
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