NDLI: Using Color to Enhance LED Lighting Quality

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Using Color to Enhance LED Lighting Quality

Content Provider	TeachEngineering: STEM curriculum for K-12
Author	Banks, Bertina
Copyright Year	2017
Description	Students take what they know about materials, optical properties and electrons to the next level—to see how semiconductors can be used to augment light. The challenge: To design an improved LED headlight that lights the roadway without distracting oncoming drivers and passengers with the harsh, bright white light seen in many cars today. Students take what they know about materials, optical properties and electrons to the next level—to see how semiconductors can be used to augment light. First, they learn how light-emitting diodes (LEDs) work, which helps them to think critically about a real-world problem they are asked to solve later in the activity as if they are practicing engineers. The challenge: To design an improved LED headlight that lights the roadway without distracting oncoming drivers and passengers with the harsh, bright white light seen in many cars today. Students research the problem via an online video, article and interactive simulation, learning all about quantum dots. Then teams use small LED flashlights and pieces of red, blue, yellow and green acetate to independently experiment to come up with a model that has the potential to improve the measured visual quality of bright white LED light—their solutions to the headlight challenge.
Language	English
Access Restriction	Open
Rights Holder	Georgia Institute of Technology Regents of The University of Colorado
Subject Keyword	Physical Science New Technology Improved Backlighting Technology Quantum Dot Technology Too Bright Cutting Edge Technology LED Headlight Challenge Bright Headlight Semiconductors Led Flashlight Color Mixing Light Quantum Dot Light-emitting Diode Flashlight Headlight
Content Type	Text Video
Time Required	PT1H
Education Level	Class VIII Class IX
Pedagogy	Experimental Activity Lecture cum Demonstration
Resource Type	Hands-on
Subject	Physics

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