Unverified87% confidenceTradeoffTime unknown
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
1
Sources
87%
Confidence
Long-term
Relevance
-
First Seen
Sources
Related Entities
Related Claims
Unverified流明高看得亮但看不远，射程取决于反光杯深度和光斑聚焦，聚光型(TIR/深杯)射程远但泛光弱，泛光型(浅杯)照面广但打不远，露营选泛光、远搜选聚光86% similarUnverified远射聚光与泛光是矛盾的：聚光看得远但视野窄，泛光近距离照明范围大但射程短，营地/近距作业选泛光，找路/搜索选聚光，混合光束档最通用85% similarUnverified射程与泛光是矛盾的：深反光杯（大直径灯头）聚光射程远但近处黑边明显，橘皮反光杯或TIR透镜泛光均匀但射程近，户外找路选聚光、营地照明选泛光83% similarUnverified流明高不等于照得远，射程由聚光反光杯/透镜决定：泛光头(TIR透镜)照近处一片亮，聚光头(深反光杯)照远处一个点。找人找路选聚光，营地作业选泛光83% similarUnverified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82% similar
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