Recently, sponsored by the National Semiconductor Lighting Engineering R&D and Industry Alliance, the Third Generation Semiconductor Industry Technology Innovation Strategic Alliance, and the Cangzhou Zhongjie High-tech Industrial Development Zone Management Committee, China Semiconductor Lighting Network, Jizhi Toutiao, and Third Generation Semiconductor Industry Network The media platform joins hands with Zhejiang Institute of Illumination, Zhejiang Provincial Lighting Association, Zhejiang Solid State Light Source Industry Association and other units, with the theme of “wisdom leading · collaboration and win-win”-the 5th China Smart Lighting Innovation Application Summit · Zhongjie Optoelectronics Industrial Cluster Development Seminar and Hangzhou Road Landscape Lighting Special Event was held in New Century Grand Hotel Hangzhou.
Li Qian, deputy director of Yuanfang Optoelectronics Science Research Institute, shared the theme report of “Performance Index Evaluation of Road Landscape Lighting Products”. She said that the modern urban road landscape is already a combination of function, science, culture, and art. For road landscape lighting related standards and specifications, the quality evaluation is mainly measured from the aspects of illuminance, brightness, color, uniformity, light interference, and edge illuminance ratio (road lighting). Although the illuminance and brightness measurements are parallel, it is actually more appropriate to use brightness to measure and evaluate. Remote information can provide comprehensive measurement solutions for the electrical and electromagnetic compatibility (EMC) performance of other accessories of multifunctional street light poles.
And contrast index, brightness index, aiming-point brightness measurement, uniformity, contrast and three-dimensional perception, edge illuminance ratio (EIR), image-based brightness measurement, adaptive road lighting quality evaluation, light curtain brightness, and road lighting The core evaluation indicators such as the threshold increment limit TI, the glare evaluation index-GR in the area lighting, the color parameters, the perception and measurement of color, etc. were interpreted in detail.
The human eye directly perceives the brightness, the same lighting conditions but different road materials, the brightness has a big difference. Roads, squares, parks, and other places, billboards using floodlighting methods should consider the illuminance (or brightness uniformity). When focusing on lighting targets in places such as sculptures, fountains, greenery, building entrances, etc., attention should be paid to the contrast between the brightness of the illuminated object and the brightness of the background. Excessive contrast can also cause discomfort. Commercial pedestrian streets, advertisements, and other places with high color recognition requirements should use high color rendering light sources. Advertising and sign lighting should use high color rendering light sources with a general color rendering index greater than 80. The color rendering index of the light source in road lighting should not be less than 60.