What are the benefits of white light technology? Lighting Consultant Miles Pinninger and GE Global Outdoor Leader Diederik de Stoppelaar talk about innovative outdoor lighting solutions at Light + Building 2012.

1. “White light – just a
choice of color or more?”
Miles Pinniger
Independent Lighting Consultant
Diederik de Stoppelaar
Global Outdoor Leader
GE Lighting
18th April 10:00 AM & 3:00 PM
GE Stand
1
Vertical Pages
2012 Q1

2. The case for white light
 Horrible colour appearance & no colour rendering
 Poor lumen maintenance ( SOX )
 High control gear losses “
 Useless photometrically “
 Outdated by white light developments
 Also, poor visual performance under this light colour
2

3. Moorfield estate Essex – Thanks to Thorn

4. Improvements in white light
technology:
 Efficacy - more Lumens for less Watts
 Better Lumen maintenance
 Longer life
 Electronic control gear
 More stable white colour
3

5. Three Key Points...
1. Quality not Quantity
2. Spectral Distribution critical to Vision
3. Optical system efficiency with LEDs
far higher than with HID

6. And actually a fourth point:
(not strictly to do with white light)
4. LEDs are beautifully controllable
- both optically
- and with dimming

7. Mesopic Vision
 Sometimes known as „Twilight Vision‟,
occurs in a narrow illuminance band
corresponding to Eh = 5–30 Lux.
 Coincides closely with BS5489 / EN13201
urban/residential.
 Vision enhanced under blue-rich white light
with good colour-rendering light sources (ie.
better than CRI 60)
4

8. SON vs Metal Halide
ILLUMINANCE 60% LESS
Thanks to Venture Lighting
Costco Liverpool HPS (2200K CRI 20) White Metal Halide (5000K 90 CRI)
600 W SON 365 Watt, 39% energy reduction

9. Facial Recognition
 White light significantly better for facial
recognition than yellow Sodium light
 About 60% less white light needed
Source: Raynham & Sakvikronning UCL London

10. Facial recognition
Source: Raynham & Saksvikronning UCL London

11. Conclusions:
1. White light saves energy,
lower lamp powercan be used.
2. Better facial recognition (therefore security)
with white light & requires 60% less
3. Mesopic conditions (5 – 30 Lux):
High (> 60%) CRI lamps give optimum
vision for lowest energy.

12. Exterior light fixtures of the future
“ Fit & Forget” 10 yrs no-servicing solutions (CFL& LEDs)
 Smaller luminaires
 Super-efficient reflectors
 Self – cleaning optics
 Better luminaire sealing – protect electronics & LEDs
 Minimum upward light (future legislation)
 Simple electronic lighting control systems (energy saving)
 More reliable electronics(currently a weak link)
 Recyclable luminaires – return to factory for LED change
after 10yrs, with 40-year luminaire life

13. White road lighting
VISUAL COMFORT:
Closer to daylight
Better colour discrimination
SAFETY & SECURITY:
Better facial recognition
SAFER DRIVING:
Improved peripheral vision
Quicker response

14. CMH StreetWise Conversion
Budapest Elizabeth
Bridge
Thanks to GE Lighting

15. White Light LEDs
White LEDs 8400 Lm 75 CRíI HPS 21000 Lm 22 CRI
Better visibility with 60% less light!

16. White Light Architectural Lighting
(image of LED scheme)
GE‟s 2012 Olympics scheme for Tower Bridge London

17. Dynamic Power Management
(DPM)
• Ambient lighting level “simmers“ at low level (i.e.10-20%)
• Sensors trigger higher levels when required
• LEDs perfect for this application
• Energy savings up to 85% compared w static operation
• Less thermal stress on system gives even longer LED life
• Application now moving to radar sensors for road lighting
• New sensor technology will widen applications

18. Radar-operated Road Lighting
Thanks to Comlight Norway

19. DPM in action: Shell worldwide
forecourts
Thanks to Nexus Malaysia
( Thanks to Nexus Malaysia )

20. GE... For Outdoor
Your partner for white light,
upgrade alternatives tailored to
budgets
Unique light source efficiency &
optimized system efficacy
Effective light control, even light
distribution
Technical performance
Demonstrate sustainability
20

21. See our stand for the white light
solution that fits You best