Unverified80% confidenceDecision RuleTime unknown

光疗类助眠灯的关键参数是色温可调至2700K以下暖光并支持渐暗（日落模式≥30分钟），仅有定时关灯功能而无渐暗曲线的产品助眠效果有限

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Unverified光疗类助眠灯选购看色温：入睡前用≤3000K暖光（模拟日落抑制过度清醒），晨起唤醒用≥6500K冷白光（模拟日光抑制褪黑素）；单一色温产品无法覆盖完整昼夜节律调节94% similar Unverified安抚助眠首选可调至暖光（色温≤3000K）且最低亮度能降到几勒克斯的机型，冷白光（≥5000K）会抑制褪黑素分泌反而影响入睡92% similar

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