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photometer

美[foʊ'tɒmətə] 英[fəʊ'tɒmɪtə]

n. [物]光度计；光度测定器

近义词：lightmeter，exposuremeter，

Noun

measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
photographic equipment that measures the intensity of light

用作名词(n.)

We must carry out the measuremnt with a photometer on an airplane.要进行这种测量，我们必须使用一台装在飞机上的光度计。
Photometer for measuring the directional light distribution characteristics of sources or luminaires.测量光源或灯具定向光线分布特性的光度计。

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