Unverified85% confidenceDecision RuleTime unknown
防眩光需要发光面积大且带导光板或磨砂罩，让光线均匀漫射；直接露出LED灯珠的灯即使亮度够也会形成刺眼光斑，老年人对眩光的不适阈值更低
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85%
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Long-term
Relevance
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Unverified遮光设计（下沉式光源+防眩光板）比单纯高流明更重要，能看到裸露光珠或直视灯头刺眼的灯，即便照度达标也会造成眩光疲劳86% similarUnverified遮光角需≥30度且灯头可俯仰调节，避免光源直射眼睛产生眩光；裸露LED灯珠无遮光罩的台灯即使参数好也会造成眩光疲劳，不建议购买85% similarUnverified防眩光设计越好（深藏光源、格栅、磨砂罩）光效损失越大，同瓦数下深防眩灯实际亮度比裸灯低20-30%，追求氛围选防眩、追求照度需加大功率83% similarUnverified起夜照明亮度控制在5-15流明即可，过亮（＞30流明）会导致瞳孔收缩、彻底清醒；带无极调光或多档亮度的产品更实用，固定单一亮度容易过刺眼83% similarUnverified照度均匀度（最低/平均照度比）越高越好，专业护眼灯用透镜阵列或导光板实现均匀分布；单颗大功率LED裸露光源亮度高但中心过亮边缘暗，长期看书导致瞳孔频繁调节疲劳82% similar
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