Providing more diurnal light to people working indoors serves vitality and healthy entrainment of our internal clock via the non-image forming pathway. But we do not exactly know how much light people are exposed to in their office, nor do we know how much extra light they receive if we raise the overall illuminance. In this study, we tracked office workers’ personal exposure during two three-week field intervention studies, one in winter, one in late spring. Electric lighting provided, on average, either approximately 125 or 900 lux horizontally on the desk (40 lux vs. 300 lux vertically, at the eye), on top of daylight conditions. The aim of the study was to demonstrate the amount of variance in exposure of office employees in a modern office space. Detailed graphical visualizations are presented to illustrate personal exposure patterns. Data collected with a spectrometer at a reference desk clearly revealed the light intervention, despite variations in weather conditions and sun position. Yet the person-based data revealed large differences between - and within - participants in terms of light received at the eye, despite them working in the same office space. Moreover, whereas for some individuals the light intervention resulted in marked increases in exposure, light exposure patterns of others showed virtually no signs of the additional lighting. We discuss implications for research and practice.

中文翻译：

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您设置的是（不是）您得到的：现场的光线干预如何转化为个人曝光

为在室内工作的人们提供更多的昼夜光，通过非图像形成途径为我们的内部时钟提供活力和健康的引导。但是我们并不确切知道人们在他们的办公室里暴露了多少光，也不知道如果我们提高整体照度，他们会收到多少额外的光。在这项研究中，我们在两项为期三周的实地干预研究中追踪了办公室工作人员的个人暴露情况，一项在冬季，一项在晚春。在日光条件下，电照明在桌面上提供的平均水平约为 125 或 900 勒克斯（40 勒克斯与垂直300 勒克斯，在眼睛处）。该研究的目的是证明办公室员工在现代办公空间中暴露的差异量。提供详细的图形可视化以说明个人暴露模式。尽管天气条件和太阳位置发生变化，但在参考台上用光谱仪收集的数据清楚地显示了光干预。然而，基于人的数据揭示了参与者之间和内部在眼睛接收到的光方面存在巨大差异，尽管他们在同一个办公空间工作。此外，对于某些人来说，光干预导致曝光量显着增加，而其他人的光曝光模式几乎没有显示出额外照明的迹象。我们讨论对研究和实践的影响。尽管他们在同一个办公空间工作。此外，对于某些人来说，光干预导致曝光量显着增加，而其他人的光曝光模式几乎没有显示出额外照明的迹象。我们讨论对研究和实践的影响。尽管他们在同一个办公空间工作。此外，对于某些人来说，光干预导致暴露量显着增加，而其他人的光暴露模式几乎没有显示出额外照明的迹象。我们讨论对研究和实践的影响。