The illumination angle of solar street lights can usually reach 180 degrees, but the specific angle will vary depending on the height of the lamp pole. Under the premise of ensuring the intensity of light, the larger the illumination angle, the better. However, in order to avoid insufficient lighting intensity due to photoelectric dispersion, it is usually not recommended to adjust the illumination angle too large. When purchasing, you should communicate clearly with the manufacturer to meet specific project requirements and avoid disputes caused by illumination angle issues.

• The illumination angle of solar street lights mainly involves two aspects: the illumination angle of the lamp and the installation angle of the solar panel, as follows:

1. Lighting angle of lamps

Standard configuration

The illumination angle of conventional solar street lights is generally 180°, which can cover the basic lighting needs on both sides of the road12.

Extended design

Some advanced models can expand the illumination range through structural optimization, for example:

• The patented design of the three-sided lighting module can reach an angle of 260°4;

• The double-sided wide-angle lighting design can achieve 270° coverage11;

• The lamp supports 180° horizontal adjustment, and the lamp arm can be adjusted 160° vertically, achieving flexible adaptation in multiple directions13.

Adjustability

Some street lights are equipped with an angle adjustment mechanism, which allows the illumination direction to be adjusted according to actual needs to improve lighting efficiency3.

2. Solar panel angle

Conventional installation

The solar panel and the lamp pole are usually at a 45° angle, which is suitable for most areas69.

Optimization suggestions

Direction: It is recommended to face due south to maximize the reception of sunlight7;

Tilt: Consistent with the local latitude (for example, a 40° tilt is recommended in areas at 40° north latitude)10;

Dynamic adjustment: Some designs support automatic tracking of the sun's azimuth to improve energy conversion efficiency5.

Summary

Lighting angle: Prioritize wide-angle design above 180°, and consider 260°~270° models for complex scenes;

Solar panel angle: needs to be adjusted according to geographical location, and dynamic tracking design can further improve power generation efficiency.