Unverified80% confidenceTradeoffTime unknown
Ra值越高越接近自然光但发光效率越低（更耗电/需更多灯珠），家用读写Ra95已足够，追求Ra98以上会显著增加成本且肉眼难辨差异
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Related Claims
Unverified显色指数越高（Ra97、R9高）通常发光效率越低，同等亮度需更高功率、发热更大且价格更贵；非专业用途Ra95已足够，无需盲目追求Ra9888% similarUnverified显色指数越高（Ra95+/高R9）往往牺牲发光效率，同瓦数流明更低更耗电；一般居家Ra90+已足够，Ra95+适合专业辨色需求88% similarUnverified显色指数越高，发光效率越低、单瓦亮度越暗，Ra97比Ra95亮度损失明显；除非从事美术、印刷、珠宝鉴定等专业工作，日常家用Ra95已足够且更亮更省87% similarUnverified高显色（Ra95）与高亮度往往难兼得：追求Ra95以上的灯珠发光效率较低，同功率下亮度略降，日常读写Ra90+已足够，无需盲目追求Ra9886% similarUnverified高显色指数(Ra95)会降低发光效率、增加成本和发热，纯阅读用途Ra90已足够，无需盲目追求Ra9885% similar
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