How should the arrangement interval of garden lights be set?

In actual construction, what is the general interval of garden lights? This problem is actually related to the illuminance. The larger the power of the lamp, the larger the interval. Garden lights can be divided into two types: 1. Diffuse reflection, no mask, this kind of light is scattered everywhere, so most of the 150W high pressure sodium lamps (metal halide lamps) are used. The light is too dazzling) The height can be between 3.5 and 4.5. Generally, there are two specifications of 3.5 and 4.5 meters for light poles. The distance between them is preferably 18 to 20 meters. 2. Indirectly, there is a mask, this kind of His light is not scattered everywhere, so both sodium lamps and metal halide lamps can be used with a spacing of 150W at about 16 meters, which is OK, and can be enlarged. The garden lamp is a 45W spiral tube energy-saving lamp, the luminous flux can reach more than 2300lm, the color temperature is generally 2700K, the lamp height is 3.5m, and the color rendering index can basically reach Rau003d80. 20m. In addition, a lamp is arranged at the intersection of each unit entrance and the main fire lane in the residential area for individual control of night lighting. On the road, the interval jumper method is used for two-way control, and half of the lights are turned off in the second half of the night to save energy. According to engineering practice, the dark band between the two lamps is just eliminated, that is to say, the arrangement spacing is basically appropriate. If the height of the light pole changes, the arrangement spacing will be slightly adjusted accordingly.