The Lightbulb Computer
The 'Lightbulb Computer' is a speculative design project that uses projector technology and computer vision to display information on surfaces in the home. It aims to provide an alternative to screen-based devices like smartphones or headsets by integrating ambient computing into everyday environments.
Why it matters
It represents a shift in human-computer interaction design, moving away from personal screens toward spatial, ambient computing interfaces.
published September 2026 · Guillaume Ardaud
A video version of this piece is available on YouTube .
Modern visions for the future of human-computer interaction are excessively focused on smart glasses and headsets - devices that are constraining & socially awkward.
This project explores an alternative direction - a speculative device called the Lightbulb Computer that uses modern projector technology & computer vision advancements to blend ambient computation & spatial information display in everyday spaces.
In this series of design prototypes, I want to share with you a direction for computing that involves projecting information in the real world to augment it, rather than keeping it confined to small rectangular screens, or worse - piping it through devices that live on our faces.
I call this vision the Lightbulb Computer: a device that combines a projector with computer vision, in the shape of a large lightbulb.
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