Unverified85% confidenceDecision RuleTime unknown
选择通过IEEE PAR1789标准的'无危害'频闪等级，波动深度<5%可视为无频闪；商家宣称'无频闪'但只用DC恒流调光在低亮度档仍可能出现频闪，用手机慢动作录屏验证最直接
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Unverified无频闪要认准通过IEEE 1789无频闪标准或标注'无可视频闪'，DC恒流驱动优于低频PWM调光；用手机慢动作摄像模式对准灯面拍摄若出现明显滚动条纹则为频闪明显86% 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84% similarUnverified频闪判据看无可视频闪认证（符合IEEE 1789标准的豁免级），劣质灯在100Hz以下频闪深度＞30%，用手机慢动作拍摄灯面出现明显条纹即为频闪不达标84% 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84% similarUnverified频闪要看波动深度而非'无蓝光'噱头，选择通过IEEE PAR1789'无频闪'或'豁免级'标准的产品（波动深度<3.2%在低照度下无风险），廉价灯多在低亮度档位频闪明显83% similar
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