Unverified85% confidenceDecision RuleTime unknown
显色指数Ra≥90、R9（红色还原）≥50的顶灯颜色还原更真实，长时间用眼疲劳感更低，选购看灯具是否标注具体Ra和R9数值而非仅写'高显色'
1
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85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified显色指数Ra≥95虽好，但更应关注R9（红色显色）≥50，很多灯Ra虚标高而R9偏低，导致辨色（如批改红笔、看图册）失真91% similarUnverified显色指数Ra≥90 + R9（红色显色）≥50，才能准确还原纸面和物体色彩，减少视觉辨认负担；仅看Ra达标而R9低仍可能偏色89% similarUnverified护眼台灯的显色指数Ra应≥90（国AA级要求Ra≥90，R9≥50），Ra越接近100色彩还原越真实，绘画/阅读场景优先看R9红色还原值88% similarUnverified显色指数选Ra≥95优先，同时看R9（红色显色）≥50，普通护眼灯只标Ra而回避R9，R9低会导致纸张字迹和肤色失真，长时间阅读更易疲劳88% similar
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