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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

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Led lights the future of lighting

LED Lights:The Future of Lighting

Lowen Okamoto

Mentor: Dan O’Connell


Reasons of interest
Reasons of Interest

  • Cost of energy is quickly increasing

  • Cut costs on electricity bill

  • Maintain green & sustainable environment


Overview
Overview

  • What is an LED?

  • How do they work?

  • My Project on LED lights

  • Overall Benefits


How do they work

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

How do they work?


My project
My Project

  • Spectrophotometer

  • Typically used for filters

  • Fiber-optics emission Spectrometer

  • Displays readout of light spectrum


Approach
Approach

  • Aperture to house different light sources

  • Allows for comparing different light bulbs on spectrometer


Wasted

energy

Visible spectrum 400-780 nm

780

400



179.7 LUX / Watt

15.36 LUX / Watt

15.19 LUX / Watt

2.96 LUX / Watt

Light Source



Conclusion
Conclusion

  • 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


Acknowledgements
Acknowledgements

MAHALO TO:

HNU TEAM

Dan O’Connell

Terry Born

Richard Puga

Chris Taylor

Jeff Korcan

Nathan Sabin

Mary Liang

Chad Sithar

PROGRAM DIRECTORS

Scott Seagroves

Lani LeBron

Lynne 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.


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