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Eric Haugaard

Cree LED Lighting

Opportunities for Improved Lighting Performance with LED Solutions

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32009 DOE Projections

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300 LPW

2007 Efficacy

2014Efficacy

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5Packaged LED Value Evolution

$/lm

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Annual Improvement in $/lm @ 100 LPW

43% 45% 35% 29% 45% 40% 27%

Eff

icac

y (L

PW

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6LED Solution Adoption

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7The Evolution of Adoption: It Takes Time

8Area Lighting Example 2007

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9Area Lighting Example 2007

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Compared to Today…

(2007)5 Year Warranty

53% Energy Savings

53W 82% Energy Savings80% Price Reduction vs 2007 Product10 Year Warranty

Area Lighting Example

12LED Luminaire Design

Optical ControlInterior vs. Exterior

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13LED Luminaire Design

Optical ControlInterior – Sometimes Replication is the goal

65W BR30FL65 Watts

CRI = 100

LED~9 Watts or less

CRI = 93

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95W - LED (10.5W) 2012

180W - CFL (18W)

585W - Incandescent BR30 (65W)

68W - LED (7.5W) 2016

Recessed Lighting Example 2007

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• Meeting the Illumination Performance Requirements

• Meeting the Economic Performance Requirements

Evaluating the Viability of LED Solutions

Justification Based on 2 Major Criteria

16The Value of Lighting Design

Requires Complete and ComprehensiveProduct Performance Data!!!

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Total Life Cycle Cost Analysis• Evaluation Timeframe

• First Costs

• Product and Installation Costs

• Rebate Opportunities

• Energy Costs/Savings

• Maintenance Costs/Savings

• Downtime/Loss Productivity/Safety

• Cost of Money

• Tax Impact

• Rate of Inflation

• Warranty

• Environmental

• Greenhouse Gas Reductions and Disposal Costs

• Etc…

Meeting the Economic Performance Requirements

18Meeting the Illumination Performance Requirements

IESNA Recommended Practices

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Before19 kW

After6 kW

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Before

After

22Long Term Color Point Stability

This is poor color consistency…

Typical Fluorescent and Metal Halide Challenges

Greater Possibilities With LED Solutions

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Computer Lab - Before (2400W)

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Computer Lab - After (640W)

26Light Source Common Categories

Point

Line

Area

Point is the Most Flexible

All Other Forms can be Reasonably Replicated or Improved

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28The Early Days of LED Solutions

Spots-and-Dots

Giga-Nits???

Glare Discomfort GlareDisability Glare Annoyance Glare???

Efficiency, Control, Comfort… (Pick 2???)

Solutions Should be Comfortable and Attractive as Well as High Performance

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29Packaged LED Value Evolution

$/lm

, n

orm

aliz

ed(C

ool W

hite

)

Annual Improvement in $/lm @ 100 LPW

43% 45% 35% 29% 45% 40% 27%

Eff

icac

y (L

PW

)

30Different Die and Package, Same Performance

96% Reduction in Size (volume)

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Wave Guides

32Optical Coupling and Extraction

• Total Internal Reflection (TIR) Example

Acceptance Cone

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33Simple Extraction

Roughen / Diffuse to Extract and Distribute Light

34Simple WaveguidesEdge Coupled Side Emission • Core Technology from Display Backlighting• Optical Coupling Losses• Often Requires Addition of Reflectors, Etc…, to Recycle Light Not

Efficiently Extracted• Usually Around 80% Optical Efficiency (Not All Light is Extracted Before

Opposite Edge is Reached) • Typically Limited Optical Control Possibilities

Typical “Simple” Waveguide :

1) Room-Side Diffuser

2) Side Reflectors

3) Waveguide

4) Back Reflector

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35Maximizing Optical CouplingThe coupling surface is designedto maximize the amount of lightentering the wave guide from thesource

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Transmitted

Reflected&

Transmitted

Precise Light Extraction Features

Recycled

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37QuarkStar’s Controls in Space™

Means shaping light and fixtures any way you want it!Pendant Indirect-Recessed

Completely new designs and functions become possible*

Stacklighter

*All Photometric Distributions from 3rd Party Test Reports and finished prototypes

QuarkStar Confidential ©2016

38Indoor/OutdoorPendant StackLighter Ultra Compact Wall Grazer

Controlled up/down graze

3:1 UniformityUp/down ratiotuned in tooling

QuarkStar Confidential ©2016

All Photometric Distributions from 3rd Party Test Reports and finished prototypes

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QuarkStar Confidential ©2016

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41Typical Fluorescent Indirect Linear Luminaires

2 Lamp 28W T512’ & 14’ Spacing

9’ Ceiling18” Drop Length

42Direct / Indirect Lighting Ceiling Uniformity Improvement Example

Specification Grade T5 HO

Edge Coupled Side Emission LED

High PerformanceLED Wave Guide

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What’s the Value of Exceptional Color Quality?

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Seeing is Believing…

46Good CRI and Red Color Rendition is Important

For Illustrative Purposes OnlyImages: Courtesy GE Lighting

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For Illustrative Purposes Only

Good CRI and Red Color Rendition is Important

Different Colors…

Should Look Different

Help People

Look Their Best

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Tunable Fitting Room Lighting

Photo Credit; Lux Magazine

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LED Metal Halide

830W 3,070W

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Daylight at Night?

Metal Halide4000K ~65 CRI

R9 <0 

LED5000K 90+ CRI

R9 50+ 

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Published in March 2015Collaborative paper between CLTC, University of British Columbia and the National Research Council of Canada.

High Color Rendering Can Enable Better Vision without Requiring More Power

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Controls

58Control Technologies

• Non-network Based• On-board Occupancy Sensors (for example)

• Network Based• Wireless Mesh • Radio• Power Line Carrier• Power Over Ethernet (POE)• Etc.

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59Parking Structures

60Connected Bulb

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61Improved Sensing Functionality

• Occupancy

• Temperature

• Smoke

• CO

• Sound

• Daylight

• Man Made Light

• Etc… Higher Density Space Mapping Possibilities

Credit: RPI Smart Lighting Engineering Research Center

62LED Array With Sensors

• Capable of Detecting– Heat – Light– Sound – Image– CO

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63Can LED luminaires enable system consolidation and improvements to building automation and control?

HVACDATA

LIGHTINGLIFE SAFETY

Etc…

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66Cree LED Lighting – Retail

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Thank You for Your Kind Attention