May 2025
Intermediate to advanced
512 pages
16h 39m
English
Content preview from Quantum Dot Display Science and Technology
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Chapter 7Quantum Dots for Augmented Reality
Jason Hartlove
Meta, Menlo Park, California, USA
7.1 Why Quantum Dots for Augmented Reality?
The realm of augmented reality (AR) has witnessed exponential growth, transitioning from speculative fiction to tangible applications in industries such as healthcare, education, and entertainment. At the heart of AR systems lies the display technology, which must seamlessly integrate digital imagery with the user’s natural view. Waveguide-based displays have garnered significant attention due to their potential to deliver high-quality visuals within a compact form factor. While other instantiations of AR are under development, such as automotive heads-up displays, this chapter discusses the challenges and needs for quantum dots (QDs) in AR glasses (ARG). There are three main elements of the optical system in such display: the display engine, which could be comprised of a liquid crystal on silicon (LCoS), digital micromirror devices (DMD), or microLED (μLED) display panel, the relay optics; and an optical combiner. The overall efficiency of the relay optics and optical combiners available in the form factor constraints for ARG have relatively low-efficiency, coupling <<1% of the display engine emitted light to the eye, creating a need for a very high-brightness display engine. The small form factor required for ARG also dictates that this brightness must require limited power to maintain use life given the small battery size. Lastly, to ...
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