Unverified80% confidenceDecision RuleTime unknown
夹式阅读灯的夹口开合范围需≥3cm才能夹住精装厚书或床头板，纸质薄书优先选轻量书夹式而非重型金属夹，避免压坏书页或翻倒
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Unverified夹式阅读灯需确认夹口张开范围，普通床头板/书本约2-3cm，加厚床头/桌板需夹口≥6cm，购买前测量夹持位置厚度83% similarUnverified照度需求：纸质书阅读桌面照度应达到300-500lux，长时间阅读建议500lux以上；夹灯类产品需查看标称照度而非仅看流明，流明高不等于书页照度足80% similarUnverified读写台灯发光面应采用导光板或大面积漫射设计而非裸露LED灯珠，避免眩光；有效照明区直径应≥40cm覆盖整张书桌宽度77% similarUnverified灯具照射范围应能覆盖整个书本或报纸对开幅面（约30cm宽），发光面偏小或聚光型的灯会导致翻页时需频繁移动，老人阅读大开本报纸时中心亮边缘暗易疲劳76% similarUnverified书桌阅读优先选立式/大力钳类台灯，出光口宽度≥30cm可实现整桌面均匀照明，圆形小灯头照射范围窄易产生阴影75% similar
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