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单词 ANSI lumen
释义

ANSI lumen

中文百科

流明 Lumen (unit)

(重定向自ANSI lumen)

流明英语:Lumen),符号为lm(㏐)。是光通量的国际单位制的导出单位(derived unit),是从一光源放射出的可见光的量度。光通量(luminous flux)与辐射通量(radiant flux)不同,辐射通量是所有电磁波发光总功率的量度,而光通量量度则反映了人眼对不同波长光的变化敏感度。

1勒克斯是每平方米有1流明。

英语百科

Lumen (unit) 流明

(重定向自ANSI lumen)
A standard LED lamp producing 470 lumens. It consumes about one sixth the energy of an incandescent light bulb producing the same light.
Relative Hellempfindlichkeitskurven für Tagsehen V(λ) (rot) und Nachtsehen V'(λ) (blau).

The lumen (symbol: lm) is the SI derived unit of luminous flux, a measure of the total quantity of visible light emitted by a source. Luminous flux differs from power (radiant flux) in that radiant flux includes all electromagnetic waves emitted, while luminous flux is weighted according to a model of the human eye's sensitivity to various wavelengths. Lumens are related to lux in that one lux is one lumen per square meter.

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更新时间:2025/6/19 17:33:31