Unverified88% confidenceTradeoffTime unknown
射程（beam distance）指照度降到0.25 lux处的距离，聚光型（thrower）适合远距离照物但泛光弱，泛光型（flooder）适合近距离大范围照明，营地/搜索选泛光，野外找路/防身选聚光
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified射程（beam distance）与流明不成正比，取决于反光杯深度和聚光设计，深杯聚光手电射程远但泛光弱，浅杯泛光近距离照明范围大；找路选聚光，营地/搜索选泛光82% similarUnverified泛光（近光）适合近距离走路看脚下，聚光（远射）适合看远处路况。徒步/露营优先泛光为主，越野下坡和探洞需要聚光+泛光双光源可切换74% similarUnverified泛光角度越大越适合近距离作业但照射距离短；聚光远射适合探路但视野窄，混合光斑（泛光+聚光）才能兼顾72% similarUnverified追求超远射程（聚光探照）不建议作为日常头灯，聚光光斑窄且近处地面照不到，行走时需频繁低头，泛光或泛光+聚光混合光型才适合大多数移动场景70% similarUnverified亮度与续航是核心矛盾：识别距离越远需要越高流明，但高流明急剧缩短续航。户外应急场景应选带高低亮度切换的型号，日常低亮保命、危急时高亮呼救70% similar
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