Last Updated
：2025/12/07
光束
Hiragana
こうそく
Noun
Japanese Meaning
光のエネルギーが時間当たりに運ぶ量、または光の流れを示す概念 / 光源から放射される光の総量を表す物理量で、単位はルーメン（lm） / 照明工学において、明るさを定量的に評価するために用いられる指標の一つ
Easy Japanese Meaning
光が一秒にどれくらいの量で出ているかをあらわす数
Sense（1）
luminous flux
（ canonical ）
（ romanization ）
（ romanization ）
（ hiragana historical ）
（ hiragana ）
Quizzes for review
See correct answer
This room feels bright because it has enough luminous flux.
This room feels bright because it has enough luminous flux.
See correct answer
この部屋は光束が十分にあるため、明るく感じます。
Japanese - English
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