LED Fundamentals

Welcome to LED Fundamentals, a primer on LEDs for lighting applications and LED system design considerations. The system and technology are introduced with a special focus placed on engineering discipline categories thermal, optical, and electrical.

Basics
Mesopic Vision click here to watch the video
LEDs Basics click here to watch the video
LEDs System Introduction click here to watch the video
How to Read a Datasheet Part 1 of 2 – Typical/Maximum Characteristics and Binning click here to watch the video
How to Read a Datasheet Part 2 of 2 – Characteristic Curves, Dimensions and Packaging click here to watch the video
Thermal
Thermal Characteristics of LEDs click here to watch the video
Basics of Heat Transfer click here to watch the video
Internal Thermal Resistance of LEDs click here to watch the video
External Thermal Resistance (Substrates) click here to watch the video
External Thermal Resistance (Interface Materials and Heat Sinks) click here to watch the video
Optical
Optical Principles click here to watch the video
Radiometry and Photometry click here to watch the video
Colorimetry click here to watch the video
Primary/Secondary Optics and Measurements click here to watch the video
Optical and Lighting Software click here to watch the video
Electrical
Electrical Characteristics of LEDs click here to watch the video
Driving LEDs – Resistors and Linear Drivers click here to watch the video
Driving LEDs – Switch Mode Drivers click here to watch the video
Driving LEDs – AC-DC Power Supplies click here to watch the video