The brightness and illumination in the LED street light is contradictory

On April 25th, 2009, Aladdin Lighting Network invited domestic authoritative experts to hold the "Rational Call Behind the Big Heat - 2009 Symposium on LED Application Products and Trends" held in Shenzhen as the owner of LED lighting companies, designers and terminals. Share high-level wisdom together. The seminar site was a lively discussion.

A site spectator consulted the international OLED standard project team leader, LED backlight source, members of the International Standards Group for Optical Radiation Safety Experts, and Associate Professor of Department of Opto-electronic Information Engineering, Zhejiang University, on issues such as “Contradictions between brightness and illumination standards for LED street lamp design”. Tsinghua University, Graduate School of Shenzhen Institute of Electronics Physics and Laser Devices, Associate Researcher; Qiang Yuan, Deputy Director, Semiconductor Lighting Laboratory, Shenzhen Graduate School, Tsinghua University

Question: I would like to ask the teacher of money and teacher, we know that there is a standard of brightness and illumination above the design of street lamps. How should we consider this issue in the design? If I achieve even illumination, I may see bright spots on the road.

牟 牟 牟 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :. The lights we look at below are definitely shadows. This is not good for drivers. We all know that by driving, on the cement road, we are far away, where the light shines past, is watery, not watery, and we look brighter. This is a contradiction. According to my personal point of view, brightness is a comparison. scientific. Of course, these two are definitely contradictory.

Qian Keyuan: I just said a lot by the teacher. The brightness and illumination are contradictory on the street light. The street light is not diffuse. The second one reaches the next sixty meters. If it is a rainy day, the god can't do the brightness. Uniform, rainy water is a mirror, the driver is a point, can never be uniform brightness. The cement road is very good, and whoever does the lighting up is very good. Which point is very good. There are dozens of street lights hanging in Shenzhen. It's very good. At night you will feel very even, but we know that some of the asphalt roads are difficult to get loaded with, and you feel very even. The distance is the zebra, brightness. There is too much relationship with the reflection of the road surface, and even the best road surface will not work. Consider this issue when designing the road. Do not make the zebra bar so obvious. When speaking about the brightness of a rectangle, it is not a rectangle or a rectangle. It is a matter of problem, how light is covered, and brightness can be even. Of course, even illumination is a good thing. Finally, considering how good this road is, we did not dare to write this standard, so it passed. Even if the uniformity rate is not 100%, it will be the best. It may take into account both. I think the problem is very deep and the street lights may have encountered this problem.