A prototype device shaped like a lightbulb and equipped with a projector and computer vision capabilities has been developed to test a different approach to human-computer interaction. Rather than relying on smart glasses or head-mounted displays, the system projects digital information onto surfaces in physical environments, aiming to integrate computing more naturally into everyday spaces.

The device, referred to as the Lightbulb Computer, combines a projector with visual recognition functions in a form factor resembling a standard household lightbulb. It can be mounted on a portable base for mobility or screwed into a ceiling or lamp socket for fixed installation. According to the project's documentation, the design leverages the widespread availability of Edison screw sockets and elevated positioning for broader spatial coverage.

Functionality includes voice command responsiveness, object and gesture recognition, and real-time analysis of surroundings. During demonstrations, the system was shown projecting interactive elements such as timers and recipe overlays in kitchen environments, enabling use with hands that may be dirty or occupied. In educational contexts, it was used to display answers directly within a user's line of sight while reading, reducing reliance on mobile devices.

For collaborative tasks, such as trip planning, the system projected shared maps onto walls or tables, allowing multiple users to view and interact with content through gestures. It also supported the projection of photos and other media for group viewing, and could highlight or annotate physical objects, such as locations on a 3D map of a local area.

The project notes that ambient displays — such as time, weather, or calendar updates — could be shown in common areas like hallways or bedrooms without requiring dedicated screens. In smart home settings, the system was described as enabling more intuitive control, where users could point at devices to issue commands, bypassing the need to remember specific voice triggers or app navigation.

The developer emphasized that computer vision models used in the system process visual data locally, citing privacy considerations such as on-device processing and physical camera activation indicators. While acknowledging that current hardware limitations prevent a fully refined consumer version, the project highlights advancements in projection resolution, miniaturization, and real-time image recognition as signs that the concept may become feasible in the near future.

The work is positioned as a counterpoint to dominant trends in augmented and virtual reality, which often center on wearable displays that require individual devices and can isolate users from their physical surroundings. Instead, the Lightbulb Computer explores a model where computation extends into shared spaces, blending digital information with real-world environments in a way that prioritizes accessibility and social interaction.

The project remains experimental, with no announced commercial release. Demonstrations featured unedited footage from a functional prototype, and the developer indicated plans to share additional testing results and technical details if further interest is expressed.

Guillaume Ardaud, the creator, is a software designer with prior experience at Apple, where he contributed to projects including Face ID and the iPhone camera system. He has since worked independently under the name Héliographe, focusing on interface and hardware design.