Luminaires designed to minimize light pollution are engineered to direct light downward, preventing it from scattering upwards into the night sky. These fixtures typically feature shielding or specific optics to control light distribution. An example includes a fully shielded wall pack that directs all light downwards, eliminating glare and reducing skyglow.
The adoption of lighting solutions that reduce upward light spillage offers several advantages. These include improved nighttime visibility by reducing glare, conservation of energy by directing light where it is needed, and protection of nocturnal ecosystems. Historically, concerns about light pollution have led to increased awareness and demand for these environmentally conscious lighting options.