How Outdoor Lighting damages the Environment
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Invited talk for the IEEE Young Scientists Workshop "Photonics and Microsystems", held in June 2009 at Harz University
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How Outdoor Lighting damages the Environment
- 1. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Ecological problems from outdoor lighting – and possible solutions using LED technology ●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Christian Reinboth HarzOptics GmbH Dipl.-Wi.-Inf.(FH) www.harzoptics.de ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●●●
- 2. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Overview ●●●●●●●●●● ● What is light pollution? ●●●●●●●●●● ● LED lighting – a solution? ●●●●●●●●●● ● LED lighting – a poblem? ●●●●●●●●●● ● Other energy saving ideas
- 3. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Lighting and the environment ●●●●●●●●●● ● Energy demand ●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●● 4 bn KWh / year (BRD) 35 bn KWh / year (EU) ~ 21,8 mil t CO2 / year This equates to the combined need of Berlin, Brandenburg and Mecklenburg-Western Pomerania ●●●●●●●●●● ● Light pollution / smog Graphic © Alexander Cremer
- 4. Anthropogenic climate change ●●●●●●●●●●●●●●●●●● Graphics © www.globalwarmingart.com ●●●●●●●●●●●●●●●●●●●
- 5. Glacier in Boulder, Colorado ●●●●●●●●●●●●●●●●●● Graphics © www.globalwarmingart.com ●●●●●●●●●●●●●●●●●●●
- 6. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Worldwide sea level risks Graphics © www.globalwarmingart.com
- 7. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Destroying the night sky... 50% of all Europeans are already unable to see the Milky Way with the naked eye Pictures © Jeremy Stanley
- 8. ...all over the world ●●●●●●●●●●●●●●●●●● Switzerland: 2.800 km² of settlement area destroys the natural night sky over an area of 41.000 km² Picture © Dark Skies Switzerland ●●●●●●●●●●●●●●●●●●●
- 9. Vincent Van Gogh – Arles, 1888 ●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●●●
- 10. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Light pollution in Wernigerode Highly inefficient „ground spots“ at the Nikolaiplatz
- 11. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Street lights are insect killers Gas discharge lamps kill about 150 insects per night - several billion insects per year in Germany alone Pictures © Prof. Eisenbeis, Uni Mainz
- 12. AuLED lighting research project ●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●●●
- 13. Increased energy efficiency ●●●●●●●●●● ● ~30% less energy use compared to GDL ●●●●●●●●●● ● Additional dimming can save up to 20%
- 14. Focused light dispersion ●●●●●●●●●●●●●●●●●●●● ● ●●●●●●●●● ●●●●●●●●●● ● Independent of mast height and distance ●●●●●●●●●● ● More focused light reduces light pollution
- 15. Additional advantages ●●●●●●●●●● ● Color spectrum similar to daylight ●●●●●●●●●● ● Insect-friendly light (less attraction) ●●●●●●●●●● ● Long life span (close to 50.000 hours)
- 17. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● First live tests are underway LED street lights in Brandenburg an der Havel Picture © Meetingpoint Brandenburg
- 18. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Where there is light... LED illumination in Obergrombach (16.000 LEDs) Pictures © Rolf Kaiser
- 19. How else can we save energy? ●●●●●●●●●●●●●●●●●● Polymeric sidelight fibers for indirect lighting applications (developed by tti GmbH, HarzOptics GmbH and DieMount GmbH) ●●●●●●●●●●●●●●●●●●●
- 20. ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● Thank you very much! ●●●●●●●●●●●●●●●●●● ●●●●●●●●●●●●●●●●●● http://www.harzoptics.com ●●●●●●●●●●●●●●●●●●● http://www.led-street-light.info ●●●●●●●●●●●●●●●●●●●