The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2020
Filed:
Dec. 30, 2016
Beijing University of Technology (Cn), Beijing, CN;
Guizhou Expressway Group Co., Ltd. (Cn), Guizhou, CN;
Jiangbi Hu, Beijing, CN;
Xiaoyu Li, Beijing, CN;
Xiaojuan Gao, Beijing, CN;
Xiaoqin Zhang, Beijing, CN;
Guiping Guan, Guizhou, CN;
Jianmin Wang, Beijing, CN;
Feng Liu, Beijing, CN;
Linxi Gao, Beijing, CN;
Yuanfeng Zhang, Beijing, CN;
Jiamei Liu, Beijing, CN;
Pengfei Xu, Beijing, CN;
Jianlong Cheng, Beijing, CN;
Jiechao Cheng, Beijing, CN;
Ronghua Wang, Beijing, CN;
Beijing University of Technology (CN), Beijing, CN;
Guizhou Expressway Group Co., Ltd (CN), Guizhou, CN;
Abstract
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.