Outdoor illumination designed to minimize light pollution and glare falls under a specific category. These fixtures are engineered to direct light downwards, preventing it from scattering upwards into the night sky and reducing light trespass onto neighboring properties. An example includes a fully shielded wall-mounted light fixture that emits light only below the horizontal plane.
Employing such lighting offers numerous advantages. It preserves the natural darkness of the night sky, benefiting astronomical observation and reducing disruption to nocturnal wildlife. Additionally, it enhances visibility by minimizing glare, promoting safety and security. Historically, the adoption of these lighting principles has been driven by growing awareness of the negative impacts of excessive artificial light at night.
