动态照明对健康光环境视知觉恒常性的影响机制研究

随着LED技术的迅速发展，动态照明在城市夜景、立面媒体、氛围营造和室内功能照明等场景得到了广泛的应用。然而，不合理的动态照明所造成的光污染会威胁到人的视觉功能和心理健康。目前，动态照明对人视觉感知和心理恒常性的影响机制尚不明确，其在心理物理学层面上对光环境健康的基础理论研究仍有较大欠缺。本研究拟以健康光环境为研究目标，以视知觉恒常性为研究对象，采用心理物理学实验和循证设计相结合的方法，系统研究动态照明对视知觉恒常性的心理物理学作用机理，不同视觉范围下动态照明参数对视知觉恒常性指标的影响，动态照明影响空间、距离和时间三种恒常性的耦合模型，以及适用于典型视觉任务和照明场景的健康动态照明参数优化等关键科学问题。为此，本研究将得到动态照明对视知觉恒常性的单因素影响曲线，建立三种视知觉恒常性对动态照明环境的耦合模型组，并为进一步提出适用于建筑照明设计标准的健康动态光环境控制指标和推荐参数提供科学依据。

As LED technology rapidly processes, dynamic lighting now has been widely used in many applications such as night landscape, facade media, ambient lighting and indoor functional lighting. However, light pollution brought by inappropriate dynamic lighting will deteriorate visual function and psychological health. Currently there is a knowledge gap underpinning the fundamental theory at psychophysical level for healthy luminous environment, in the effect of dynamic lighting on visual perception and psychological constancy. In this study, visual perceptual constancy under dynamic lighting will be investigated, for the objectives of healthy lighting environment. Psychophysical experimentation and evidence-based lighting design approach will be combined as the major research method. Four research questions were raised: 1) How does dynamic visual cue work on maintaining the visual perceptual constancy from psychophysics perspectives? 2) How do parameters of dynamic lighting at different ranges of vision influence visual perceptual constancy? 3) How much will space, distance and time constancies be affected by dynamic lighting environment in a compounded model? 4) What are the optimal parameters for healthy dynamic lighting that suit typical visual tasks and lighting scenes? Single factor curves of the effect of dynamic lighting environment on visual perceptual constancy will be obtained. A set of compounded models for the three visual perceptual constancies will also be established. Ultimately, the results of this study will provide further scientific basis for the regulations and recommendations of dynamic lighting that are suitable for architectural lighting design standards.