smart lighting engineering research centerconnor/smartpowerandlight/tech... · 2011-05-01 · smart...
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Smart LightingThe Right Light where and when you need it
Partha S. Dutta
Smart Lighting Engineering Research CenterElectrical, Computer and Systems Engineering
Rensselaer Polytechnic Institute, Troy, New York, USAe-mail: duttap@rpi.edu
July 7th, 2010
Light Sources
Efficiency of Light Sources
Category Lumen/wattIncandescent 10 to 35
Mercury Vapour (HID)) 20 to 60
Light Emitting Diode 100 (today) 200-300(Future)
Fluorescent 40 to 100Metal Halide (HID) 50 to 110High Pressure Sodium (HID) 50 to 140
Low Pressure Sodium 100 to 180
High EfficiencyNo controllability
Conventional Lighting: poor efficiency, no controllability
Efficiency & Controllability
Emergence of Digital Lighting TechnologiesSolid State Light sources: inherent spectral, polarization, spatial emission, temporal, color temperature controls, compact foot print, integration with microelectronics
High Optical FluxSmart Lighting
Solid State Lighting & Displays
Color
lPolarization
,//E⊥
Color temperature
Pattern
Health Lighting Display
Digital Light Sources
Smart Systems
Smart Lighting Systems
Communications Imaging
emitter
photons
EfficiencySpeed
Need for Large Scale Artificial Lighting
Wavelength Controlled Plantation
Large Scale Deployment of Smart Light Sources
Smart Lighting Transformation
Light and Human Health
Light isn’t just for vision anymore!› Measurement› Theory› Application
Night shift workers
Jet lag
Adolescents’ sleep patterns
Sleep disorders
Neonatalintensive
care units
Sports performance
Seasonal affective
disorder
Spacetravel
Breastcancer
Older adults’sleep patterns
Mark Rea and Mariana Figueiro, Lighting Research Center, RPI
New paradigm for light
Intensity Spectrum DurationDistribution Timing
Appearance Visual System Visual Performance
Performance, Well-being, Satisfaction, and Comfort
Alerting Effects Circadian System Phase Shift
Intensity Spectrum DurationDistribution Timing
Culture, Experience, Expectations
IESNA
Light System for Personal Health
Direct effect of light on circadian rhythm through non‐visual receptorsDisruption of circadian linked to major health problemsPersonal Light System: ‐ Circadian rhythm estimator based on entrainment model and daysimeter data‐ Optimized lighting control with daysimeter feedback for entrainment
Mark Rea and Mariana Figueiro, Lighting Research Center, RPI
Light sensors
Activity monitor
Energy Efficient Displays
Polarized LEDs will provide huge energy savings!
Courtesy: E.F. Schubert
Distributed Adaptive Lighting and Display
Filtering, Prediction, State
Observer
Distributed Source
Controller
Lighting Drivers
Sensing, Adaptive Sampling
Multiresolution interpolation and
planning
Distributed Lighting and surface models
Multisource
Multisensor
Distributed Illumination Field
Ad Hoc Network
Art Sanderson, John Wen, RPI
High Bandwidth Density Integrated Mobility
Visible Light Communications (Dual‐Use)
Critical Infrastructure Applications
Prototype Module
Tom Little, BU
Digital Light Sources: Vision
LEDs with Theoretical Performance LimitsFabrication & Processing Technologies for Nano‐scale and Large Area LEDs“Smart‐Adaptable LEDs”: Multi‐functional, Integrated Electronic‐Photonic Device & Circuit Architectures
+Dual-Functionality
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