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An Outdoor Lighting Revolution – The Transition to Solid-State LED Lighting

An Outdoor Lighting Revolution – The Transition to Solid-State LED Lighting. Terry McGowan International Dark-Sky Association lighting@ieee.org. The First Electric Outdoor Lighting. NYC 1879 - 1881. Menlo Park, NJ December 31, 1879.

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An Outdoor Lighting Revolution – The Transition to Solid-State LED Lighting

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  1. An Outdoor Lighting Revolution – The Transition to Solid-State LED Lighting Terry McGowan International Dark-Sky Association lighting@ieee.org

  2. The First Electric Outdoor Lighting NYC 1879 - 1881

  3. Menlo Park, NJ December 31, 1879

  4. Incandescent “Radial Wave” Luminaire 1940s 4

  5. Standard Full Cutoff “Cobra Head” Street Lighting Luminaires

  6. Lights of San Diego from Mt. Palomar

  7. Environmentally-Sensitive Outdoor Lighting 7

  8. LED-powered Roadway Lighting LED-Powered Roadway Lighting

  9. I-35 Bridge LED Lighting - Minneapolis

  10. LED Lighting – Lantern Retrofit

  11. LED Roadway and Area Lighting

  12. Correlated Color Temperature (CCT) - Kelvin Scale High Efficiency LED Metal Halide Incandescent High Pressure Sodium

  13. High CCT Light Source Issues: • More Glaring • Greater Scattering of Light • Higher Impact on Circadian - --- Rhythms 13

  14. Quality Outdoor Lighting Requirements • See the effect, not the source • No glare! • Light only where and when needed • Shine the light down • Don’t over light • Choose low CCT light sources (4000 Kelvins max.) • Use energy efficient sources & Systems

  15. Terry McGowan, International Dark-Sky Association www.darksky.org lighting@ieee.org

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