Opt Express. 2021 Nov 8;29(23):38606-38614. doi: 10.1364/OE.443050.
Alzheimer disease and related dementias affect 15-20% of elderly people, and 60-70% of these suffer from sleep disturbances. Studies suggest that lighting can improve sleep. The key challenge is how to deliver light effectively. We have designed a lighting system that adjusts spectrum and irradiance on a 24-hour timetable to provide spatially uniform, shadow-free white light with CRI>85 and up to 1000 Lux for day vision and amber light for night vision. To aid sleep, melanopic illuminance varies over 3 orders of magnitude to enable strong suppression of melatonin in the morning/early afternoon, moderate suppression in the evening, and no suppression at night.
阿尔茨海默病和相关痴呆影响 15-20%的老年人，其中 60-70%患有睡眠障碍。研究表明，光照可以改善睡眠。关键的挑战是如何有效地提供光照。我们设计了一种照明系统，可以根据 24 小时时间表调整光谱和辐照度，提供空间均匀、无阴影的白光，显色指数>85，高达 1000 勒克斯用于白天视觉，以及用于夜间视觉的琥珀光。为了帮助睡眠，人眼色度照度变化超过 3 个数量级，以便在早上/下午早些时候强烈抑制褪黑素，晚上适度抑制，晚上不抑制。
