RPI ID: 2018-053-401
Innovation Summary: This system reduces sky glow by monitoring cloud coverage and adjusting outdoor lighting output when clouds are at or below a set threshold. A control unit receives sensor data, decides against a policy whether to dim and shift spectra, and commands light sources capable of variable intensity and wavelength. The policy can incorporate local factors such as time of night, traffic, events, and seasonality. By favoring longer wavelengths and lower intensities on clear nights, the system preserves safety while minimizing astronomical impact. Thresholds (e.g., ~50% cloud cover) provide a simple deployment rule, while AI control enables adaptive strategies across districts.
Challenges & Opportunities: Challenges include reliable cloud sensing at city scale and coordinating heterogeneous streetlight inventories. Human‑factors validation must show maintained visibility and safety under dimming and spectral shifts. Integration with municipal policies and utility tariffs is required. Opportunities include measurable reductions in light pollution, energy savings, improved wildlife outcomes, and star‑friendly tourism. The platform can extend to glare reduction, curfews, and astronomical‑event modes triggered automatically.
Key Benefits: ✓ Reduces sky glow on clear nights ✓ Policy‑driven control with AI option ✓ Works with variable‑intensity and tunable‑spectrum lights ✓ Energy savings and ecological benefits ✓ Scalable from campuses to cities
Applications: • Municipal streetlighting and highways • Parks, observatories, and dark‑sky preserves • Campuses, resorts, and smart‑city pilots • Wildlife‑sensitive corridors
Keywords: Light pollution; sky glow; cloud sensing; tunable white; outdoor lighting control; smart city; AI policy engine
Intellectual Property Issued US Patent No. 12,369,241