LED Lights: The Future of Lighting
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LED Lights: The Future of Lighting Lowen Okamoto Mentor: Dan O’Connell
description
LED Lights: The Future of Lighting. Lowen Okamoto Mentor: Dan O’Connell. Reasons of Interest. Cost of energy is quickly increasing Cut costs on electricity bill Maintain green & sustainable environment. Overview. What is an LED? How do they work? My Project on LED lights - PowerPoint PPT Presentation
Transcript of LED Lights: The Future of Lighting
LED Lights: The Future of Lighting
LED Lights: The Future of Lighting
Lowen OkamotoMentor: Dan O’Connell
Lowen OkamotoMentor: Dan O’Connell
Reasons of InterestReasons of Interest
Cost of energy is quickly increasing
Cut costs on electricity bill
Maintain green & sustainable environment
Cost of energy is quickly increasing
Cut costs on electricity bill
Maintain green & sustainable environment
OverviewOverview
What is an LED?
How do they work?
My Project on LED lights
Overall Benefits
What is an LED?
How do they work?
My Project on LED lights
Overall Benefits
How do they work?How do they work?
Incandescent Bulb
Tungsten filament
Glows when red hot
Much energy is wasted
Incandescent Bulb
Tungsten filament
Glows when red hot
Much energy is wasted
LED
Light Emitting Diode
Small silicon crystals “doped” with phosphor atoms
Free electrons become excited producing photons
No heat output
LED
Light Emitting Diode
Small silicon crystals “doped” with phosphor atoms
Free electrons become excited producing photons
No heat output
My ProjectMy Project Spectrophotometer
Typically used for filters
Fiber-optics emission Spectrometer
Displays readout of light spectrum
Spectrophotometer
Typically used for filters
Fiber-optics emission Spectrometer
Displays readout of light spectrum
ApproachApproach Aperture to house
different light sources
Allows for comparing different light bulbs on spectrometer
Aperture to house different light sources
Allows for comparing different light bulbs on spectrometer
Wastedenergy
Visible spectrum 400-780 nm
400 780
Light Source
60 W
50 W
16 W
8 W
0
10
20
30
40
50
60
Watts
Incandescent Halogen Fluorescent LED
POWER
Light Source
60 W
178 LUX
50 W
768 LUX
16 W
243 LUX
8 W
1438 LUX
0
200
400
600
800
1000
1200
1400
1600
LUX
Incandescent Halogen Fluorescent LED
Illuminance at 3 feet from
2.96 LUX / Watt
15.36 LUX / Watt
15.19 LUX / Watt
179.7 LUX / Watt
Light Source
1,000 Hours3,000 Hours
8,000 Hours
50,000 Hours
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Hours
Incandescent Halogen Fluorescent LED
Lifetime
ConclusionConclusion Advantages
Less wasted energy No hazardous materials Superior Long Life
GREAT way to maintain green & sustainable environment
In the near future incandescent lighting methods will be phased out
Advantages Less wasted energy No hazardous materials Superior Long Life
GREAT way to maintain green & sustainable environment
In the near future incandescent lighting methods will be phased out
AcknowledgementsAcknowledgementsMAHALO TO:
HNU TEAMDan O’Connell
Terry BornRichard PugaChris TaylorJeff Korcan
Nathan SabinMary LiangChad Sithar
PROGRAM DIRECTORSScott Seagroves
Lani LeBronLynne Raschke
Lisa Hunter
Also Thank You to Mark Hoffman
The Akamai Internship Program is funded by the Center for Adaptive Optics through its National Science Foundation Science and Technology Center grant (#AST-987683) and by grants to the Akamai Workforce Initiative from the National Science Foundation and Air Force Office of Science Research (both
administered by NSF, #AST-0710699) and from the University of Hawaii.
MAHALO TO:
HNU TEAMDan O’Connell
Terry BornRichard PugaChris TaylorJeff Korcan
Nathan SabinMary LiangChad Sithar
PROGRAM DIRECTORSScott Seagroves
Lani LeBronLynne Raschke
Lisa Hunter
Also Thank You to Mark Hoffman
The Akamai Internship Program is funded by the Center for Adaptive Optics through its National Science Foundation Science and Technology Center grant (#AST-987683) and by grants to the Akamai Workforce Initiative from the National Science Foundation and Air Force Office of Science Research (both
administered by NSF, #AST-0710699) and from the University of Hawaii.
