الوصف

1. The led light is unidirectional, no light diffusion, which ensure the luminous efficiency 2. Unique secondary optical design, further improves the light efficiency 3. Light efficiency have reached *0lm / W, and there is potential. Overall, the LED total luminous efficiency is stronger than high pressure sodium lamps 4. From the visual psychological point, high pressure sodium lamp CRI is only *3, while LED light is *5+. To achieve the same brightness, the average LUX would reduce by at least *0% by replacing HPS lamps with LED lights 5. Lumens depreciation is less than 3% per year, it would still reach the demand of road illumination. However, the HPS light is with higher depreciation, more than *0% deduction for one year