We investigated minimally required uniformity of refrigerator lighting for comfortable use while maintaining the perceived lighting quality. Two experimental conditions were set depending on having or not having the storage items. In both conditions, 12 luminance uniformity levels were provided in a refrigerator. A total of 33 women participated and assessed the lighting stimuli to judge the perceptibility and acceptability of the presented uniformity levels. As a result, the stored items influenced both the perceptibility and acceptability of the luminance uniformity. To be specific, at least 71% luminance uniformity is recommended to be acceptable, and 80% luminance uniformity is recommended to be perceived as homogeneous for refrigerator lighting. The empirical result conforms to the uniformity guideline of 70% as the minimum, implying it as a minimally requested uniformity of spatial lighting to be considered in lighting design.

中文翻译：

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首选冰箱照明的亮度均匀性

我们研究了冰箱照明的最低要求均匀度，以使其舒适使用，同时保持感知的照明质量。根据是否具有存储项目设置两个实验条件。在两种情况下，冰箱中均提供了12个亮度均匀度级别。共有33名妇女参加并评估了照明刺激，以判断所提出的均匀度水平的可感知性和可接受性。结果，所存储的项目影响亮度均匀性的可感知性和可接受性。具体而言，建议至少71％的亮度均匀性是可接受的，并且建议将80％的亮度均匀性视为冰箱照明均匀。实验结果至少符合70％的均匀性准则，