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LIGHTING vs DARK SKY

LIGHTING vs DARK SKY. Definitions. SKY GLOW. Upward reflected light. Upward direct light. Obtrusive light. SPILL LIGHT. Direct glare. THA 1. Area to be lit. Three phenomena are related to light control of luminaires and their installation.  Glare.  Obtrusive light.

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LIGHTING vs DARK SKY

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  1. LIGHTING vs DARK SKY

  2. Definitions SKY GLOW Upward reflected light Upward direct light Obtrusive light SPILL LIGHT Direct glare THA 1 Area to be lit

  3. Three phenomena are related to light control of luminaires and their installation  Glare  Obtrusive light  Sky glow All are the result of waste of energy

  4. SOLUTION: No light at all ? As it has to do with safety of drivers and pedestrians – just let us say, for PEOPLE  Road lighting is necessary  Lighting of working places is necessary  Sports lighting is a social topic

  5. FINDING THE RIGHT APPLICATION RATE (To comply with the Standards)  Road Lighting EN 13201 & O 1051  Sports Lighting EN 12193  Working places EN 12464  Effect lighting (O 1052 & RVS & LiTG recommendations)

  6. FINDING THE RIGHT APPLICATION RATE BUT NOT OVERLIGHT  Fulfill the Standard  Exact lighting design  Use the informations needed for lighting design to talk with the customer

  7. FINDING THE RIGHT APPLICATION RATE  Work together with road-designer  Implement the needs for lower lighting levels  Find the best luminaire and the best design for this project

  8. OTHER POSSIBILITIESTO BE DISCUSSED  Road lighting increases security  The better the comfort, the safer is traffic  Increasing comfort is not meaning increasing lighting levels!

  9. OTHER POSSIBILITIESTO BE DISCUSSED Example:  Road lighting with Class ME3c needs 1cd; Uo > 40%; Ul > 50%; TI < 15%  Better comfort with 0,75cd; Ul > 70%; TI < 10%  Better comfort = better visibility = better, safer traffic

  10. WHAT HAS TO BE DONE  Research about the influence of uniformity, TI and Luminance to get the correlations  Implementation of the results into the standards  Better comfort + lower light levels + less Sky glow This sounds perfect and this is the target that we shall follow

  11. WHAT IS GOING ON AT THE MOMENT  Development of the new Standard for Light Pollution in Austria – the O 1052 « Lichtimmissionen »  Involved people: Lighting engineers Traffic engineers Astronomers Biologists Ecologists Environmental protection officers from provincial governments People from test and experimental station (Laboratory) Physicians (med)

  12. WHAT WE HAVE SEEN SO FAR  Development of the new Standard for Light Pollution shows a lot of problems to be taken into account  It is more than just looking at luminaire-design

  13. WHAT WE HAVE DONE SO FAR  Development of new reflectors straight on with flat glass with higher performance  We use all availlable technologies to keep maintenance factors as low as possible so overlighting of new installations is not necessary

  14. A LOOK INTO THE FUTURE  Lighting engineers (and industry if necessary) shall be involved into projects much earlier.  The seminars for lighting designers are a step in the right direction.  Good lighting design can improve all aspects about safety and light pollution.

  15. FACADE & EFFECT LIGHTING  Needs exact design to prevent spill light  « Rethinking » needed often is less more Awareness shall be strengthened  Problem: it is nearly impossible to do exact design just « on the paper »

  16. RETHINKING HAS STARTED  As example: Masterplan Licht in Vienna A lot of flat glass products Aim to reduce power consumption

  17. LIGHTING & DARK SKYIS POSSIBLE

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