Beijing University of Technology

Guizhou Expressway Group Co., Ltd (cn)

Jiamei Liu

Feng Liu

Xiaoyu Li

Yuanfeng Zhang

Pengfei Xu

Jianmin Wang

Xiaojuan Gao

Linxi Gao

Jiangbi Hu

Xiaoqin Zhang

Guiping Guan

Ronghua Wang

Jianlong Cheng

Jiechao Cheng

The present invention relates to a visual efficacy measuring method for objects in different light environments, which comprises: (a) setting a light environment; (b) measuring a relationship between color temperature and time; (c) a driver visually recognizing a target object; (d) resetting the light environment, and repeating the step (c); (e) processing the visual recognition information data collected by the experiments so as to establish a relationship of the visual recognition time in relation with the light environmental parameters of color temperature, color rendering index and brightness; (f) performing visual efficacy analysis according to the processing results of the visual recognition information data. The present invention also provides a color temperature standard determining method for a tunnel middle section in day time, which comprises: (a) setting a light environment; (b) measuring a relationship between color temperature and time; (c) selecting a stably distributed color temperature segment; (d) determining the color temperature standard. The method of the present invention performs visual efficacy analysis of the influence that light environment settings of illumination on a night road or in a tunnel middle section have on drivers' visual recognition activity, thereby providing a good guiding standard for reasonable and efficient setting of color temperature, color rendering index and average brightness of an illumination device.

Visual efficacy measuring method for objects in different light environments

Growing community of inventors

Beijing, China

Jiamei Liu