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2012 Q1

“White light – just a choice of color or more?”

Miles PinnigerIndependent Lighting Consultant

Diederik de StoppelaarGlobal Outdoor LeaderGE Lighting

18th April 10:00 AM & 3:00 PMGE Stand

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appearance & no colour rendering Poor lumen maintenance ( SOX ) High control gear losses “ Useless photometrically “ Outdated by white light developments Also, poor visual performance under this light colour

Moorfield estate Essex – Thanks to Thorn

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Efficacy - more Lumens for less Watts Better Lumen maintenance Longer life Electronic control gear More stable white colour

Improvements in white light technology:

1. Quality not Quantity

2. Spectral Distribution critical to Vision

3. Optical system efficiency with LEDs far higher than with HID

Three Key Points...

And actually a fourth point:(not strictly to do with white light)

4. LEDs are beautifully controllable

- both optically - and with dimming

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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)

Mesopic Vision

SON vs Metal Halide

Costco Liverpool HPS (2200K CRI 20) White Metal Halide (5000K 90 CRI)600 W SON 365 Watt, 39% energy reduction

ILLUMINANCE 60% LESS

Thanks to Venture Lighting

Facial Recognition

White light significantly better for facial recognition than yellow Sodium light

About 60% less white light needed

Source: Raynham & Sakvikronning UCL London

Facial recognition

Source: Raynham & Saksvikronning UCL London

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.

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

VISUAL COMFORT:

Closer to daylight

Better colour discrimination

SAFETY & SECURITY:

Better facial recognition

SAFER DRIVING:

Improved peripheral vision

Quicker response

White road lighting

CMH StreetWise Conversion

Thanks to GE Lighting

Budapest Elizabeth Bridge

White LEDs 8400 Lm 75 CRíI HPS 21000 Lm 22 CRI

Better visibility with 60% less light!

White Light LEDs

(image of LED scheme)

White Light Architectural Lighting

GE’s 2012 Olympics scheme for Tower Bridge London

• 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

Dynamic Power Management(DPM)

Thanks to Comlight Norway

Radar-operated Road Lighting

( Thanks to Nexus Malaysia )

Thanks to Nexus Malaysia

DPM in action: Shell worldwide forecourts

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 sustainability20

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