Unverified82% confidenceCautionTime unknown
不要买没有任何蓝光/频闪第三方认证、仅靠低价的护眼灯，其无频闪多为PWM高频调光而非真直流调光，低亮度档位下频闪明显
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82%
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Unverified低价智能灯泡多用PWM调光，在低亮度(＜30%)时频闪明显，长时间在眼下（如卧室阅读、儿童房）不建议使用无频闪认证的产品85% similarUnverified对频闪敏感或长时间用眼者不建议买仅靠低频PWM调光的廉价台灯，尤其在中低亮度档位频闪深度会显著增大85% similarUnverified低蓝光/无频闪需认准两点：调光方式为高频PWM（≥3000Hz）或DC直流调光，且有IEEE 1789无频闪或护眼认证，普通低频PWM灯带在低亮度下频闪严重，长时间处于其光下易视疲劳84% similarUnverified无频闪认证只是标注PWM调光的灯在低亮度档往往频闪更严重，儿童房和长时间用眼场景不建议买低亮度靠PWM调光的产品，应选DC调光或混合调光84% 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84% similar
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