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Contents

Published online by Cambridge University Press:  06 September 2017

Ron Hui
Ron Hui
Affiliation:
The University of Hong Kong
Type
Chapter
Information
Photo-Electro-Thermal Theory for LED Systems
Basic Theory and Applications
 , pp. vii - x
Publisher: Cambridge University Press
Print publication year: 2017

Contents

  1. Preface

  2. 1Basics of Light Science and Device Modelling

    1. 1.1Basics of Visible Light and Primary Colours

    2. 1.2Light Emission in Traditional Light Sources and LEDs

    3. 1.3Heat Loss Mechanisms of Traditional Light Sources and LEDs

    4. 1.4LED Structures and their Thermal Equivalent Models

    5. References

  3. 2Steady-State Photo-Electro-Thermal (PET) Theory for LED Systems

    1. 2.1Luminous Intensity, Luminous Flux and Luminous Efficacy

    2. 2.2Models for the Steady-State PET Theory

      1. 2.2.1Linking Photometric Quantity (Light) with Electric Quantity (Power)

      2. 2.2.2Linking Thermal Quantity (Heat) with Photometric Quantity (Light)

      3. 2.2.3Linking Electric Quantity (Power) with Thermal Quantity (Heat)

      4. 2.2.4Linking Photometric, Electric and Thermal Quantities together

    3. 2.3Important Meanings behind PET Theory

    4. 2.4Achieving Maximum Luminous Flux with Proper Thermal Design

    5. 2.5Optimal Design Procedure for LED Systems

    6. References

  4. 3Dynamic Photo-Electro-Thermal Theory for LED Systems

    1. 3.1Introduction

    2. 3.2Models for the Dynamic PET Theory

      1. 3.2.1Time-Domain Junction-to-Case Temperature and Heatsink Temperature

      2. 3.2.2Time-Domain Luminous Efficacy and Luminous Flux

    3. 3.3Predictions of Photo-Electro-Thermal Variables with Time

      1. 3.3.1Variation of Luminous Flux with Time

      2. 3.3.2Prediction of Internal Junction Temperature

    4. References

  5. 4Determination of PET Model Parameters and Internal Variables

    1. 4.1Determination of the Heat Dissipation Coefficient

      1. 4.1.1Experimental Approach: The Silicon Oil Bath Method

      2. 4.1.2Determination of Heat Dissipation Coefficient from Optical Power

    2. 4.2Determination of Wall-Plug Efficiency and Optical Power

      1. 4.2.1Theory

      2. 4.2.2Applications

    3. 4.3Determination of the Junction-to-Case Thermal Resistance Rjc and Junction Temperature Tj

      1. 4.3.1Theory

      2. 4.3.2Application

    4. References

  6. 5Unifying PET Theory with Colorimetry

    1. 5.1Spectral Power Distribution

    2. 5.2Practical Spectral Power Modelling Process

      1. 5.2.1Temperature Dependence of the Peak Wavelength and FWHM

      2. 5.2.2Temperature Dependence of the Popt_phosphor/Popt_b Ratio

    3. 5.3Determination of Junction Temperature, CCT and CRI using the Dynamic PET Theory Framework

      1. 5.3.1Temperature and Electrical Power Dependence of the Optical Power

      2. 5.3.2Time Dependence of the Junction Temperature

    4. 5.4Application of the Extended PET Theory to CCT and CRI Prediction

      1. 5.4.1Steady-State Measurements

      2. 5.4.2Dynamic Measurements

      3. 5.4.3Use of the Spectral Model as a Dynamic Modelling Tool

    5. References

  7. 6Chromatic, Photometric and Thermal Modelling of LED Systems

    1. 6.1A Partitioned Grid Model for an LED System

    2. 6.2Generalized Partitioned Model for an m ××n LED Array Structure

    3. 6.3PET Modelling of Non-Identical LED Devices in Array Structures

    4. 6.4Chromatic Modelling of LED Array Systems with Non-Identical LED Devices

    5. 6.5Application Examples

      1. 6.5.1An LED System with Identical LED Devices

      2. 6.5.2An LED System with Non-Identical LED Devices

    6. References

  8. 7Precise Dimming and Colour Control of LED Systems

    1. 7.1Traditional Linear Colour Control and its Drawbacks

    2. 7.2Nonlinear Dimming and Colour Control

      1. 7.2.1Nonlinear CCT Function of White LED Systems with Variable CCT

      2. 7.2.2Mutual Thermal Dependence of Different LED Types

      3. 7.2.3Parameter Determination for the Nonlinear Luminous Flux Functions

    3. 7.3Precise Dimming and Colour Control

      1. 7.3.1Averaged CCT for Cool-White LED as a Function of DT

      2. 7.3.2Averaged CCT for Warm-White LED as a Function of DT

      3. 7.3.3Mixed CCT Based on the Nonlinear Method

    4. 7.4Practical Implementation of Precise Dimming and Colour Control

    5. References

  9. 8Applications of PET Theory

    1. 8.1Design of Smart LED Street Lighting for Weak Power Grids

    2. 8.2Structural Designs of LED Devices and Systems

      1. 8.2.1System Level

      2. 8.2.2Device Level

    3. 8.3Other Advanced Topics and Future Trends of LED Technologies

    4. References

  10. Index

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  • Contents
  • Ron Hui, The University of Hong Kong
  • Book: Photo-Electro-Thermal Theory for LED Systems
  • Online publication: 06 September 2017
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  • Contents
  • Ron Hui, The University of Hong Kong
  • Book: Photo-Electro-Thermal Theory for LED Systems
  • Online publication: 06 September 2017
Available formats
×

Save book to Google Drive

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  • Contents
  • Ron Hui, The University of Hong Kong
  • Book: Photo-Electro-Thermal Theory for LED Systems
  • Online publication: 06 September 2017
Available formats
×