solid state lighting: the future is here xavier fernando ryerson university
TRANSCRIPT
![Page 1: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/1.jpg)
Solid State Lighting:Solid State Lighting: The FutureThe Future is here is here
Xavier FernandoXavier Fernando
Ryerson UniversityRyerson University
![Page 2: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/2.jpg)
Incandescent BulbIncandescent Bulb
![Page 3: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/3.jpg)
LED LampLED Lamp
![Page 4: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/4.jpg)
How Does LED Works?How Does LED Works?
![Page 5: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/5.jpg)
Common LEDsCommon LEDs
![Page 6: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/6.jpg)
White White LEDLED
![Page 7: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/7.jpg)
RGB Based White LEDsRGB Based White LEDsAdvantagesAdvantages
Excellent Color Rendering (faithful color reproduction)Excellent Color Rendering (faithful color reproduction) High lumens/wattHigh lumens/watt Color temperature can be tuned by adjusting the three colors Color temperature can be tuned by adjusting the three colors
separatelyseparately More efficient compared to phosphor based LEDMore efficient compared to phosphor based LED
DisadvantagesDisadvantages Difficult to achieve pure white colorDifficult to achieve pure white color Lamp to Lamp color variationLamp to Lamp color variation
22ou-u u ovvv
(u,v) is the colour coordinates
![Page 8: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/8.jpg)
Blue LED with PhosphorBlue LED with Phosphor
AdvantagesAdvantages Temperature StabilityTemperature Stability Simpler to create than the RGB LEDSimpler to create than the RGB LED Decent colour renderingDecent colour rendering
DisadvantagesDisadvantages Less efficiencyLess efficiency Weak lumens/wattWeak lumens/watt Board emission spectrumBoard emission spectrum Short lift time compare with other type of LEDsShort lift time compare with other type of LEDs
![Page 9: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/9.jpg)
Relative Energy Vs. WavelengthRelative Energy Vs. Wavelength
![Page 10: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/10.jpg)
Comparison of different light sources
Incandescent Light
Phosphor Based LED
RGB Based LED
![Page 11: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/11.jpg)
Power Conversion EfficiencyPower Conversion EfficiencyPower efficiency (lumen-per-watt) is the measurement of the total amount of light emitted by a light sources per energy input.
![Page 12: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/12.jpg)
Directional IlluminationDirectional Illumination
Lights from LEDs can be directed effectively to where it is needed, compensating for their lower luminous efficiencies.
![Page 13: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/13.jpg)
LifetimeLifetime
![Page 14: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/14.jpg)
LED Traffic SignalsLED Traffic Signals
LEDS use 80% to LEDS use 80% to 90% less energy 90% less energy than incandescent than incandescent signalssignals
No need for colored No need for colored filtersfilters
Longer lifeLonger life Reduce Reduce
maintenance costsmaintenance costs
Compared to filtered incandescent signals:
![Page 15: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/15.jpg)
Specific Application: Specific Application: Signs and Signs and Contour lightingContour lighting
![Page 16: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/16.jpg)
Specific application: MSpecific application: Medical edical EquipmentsEquipments
![Page 17: Solid State Lighting: The Future is here Xavier Fernando Ryerson University](https://reader033.vdocuments.us/reader033/viewer/2022051517/56649dc95503460f94abf911/html5/thumbnails/17.jpg)
FutureFuture