名詞 photometer:

1. measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
2. photographic equipment that measures the intensity of light
   同義詞：light meter, exposure meter

pho.tom.e.ter

n.（名詞）
An instrument for measuring a property of light, especially luminous intensity or flux.
光度計(jì)：用來(lái)測(cè)量光的性質(zhì)、尤其是光的強(qiáng)度和通量的儀器