Mixed Reality: Definition, How It Works and Industrial Applications
A maintenance technician inspecting an aircraft engine checks what they see against a technical drawing, a checklist and a service history. Three separate sources, checked one after another. Mixed reality merges these sources onto the object itself. It overlays interactive digital content directly on the physical environment, with occlusion and spatial anchoring. The content behaves like a physical object: hidden behind a part, aligned to a surface, stable in space. That is the core difference from simple augmented reality, which displays information without anchoring it to the real world. For field teams (maintenance, quality control, training on rare gestures), this stability changes what assistance means in practice. The operator keeps both hands free. The information stays exactly where it is useful.
Definition of mixed reality
What mixed reality is, in one sentence: it anchors interactive digital objects to the physical world, letting operators see and interact with those objects as if they were part of their immediate environment. Unlike virtual reality (VR), which creates an entirely artificial environment, or simple augmented reality (AR), which overlays digital images on the real world without deep interaction, mixed reality offers a more immersive, interactive experience. It combines the strengths of VR and AR into a continuum that anchors virtual elements to a real, physical setting.
How mixed reality works
Mixed reality devices, such as purpose-built headsets and glasses, use cameras, sensors and advanced software to place virtual images convincingly in the real world. Cameras and sensors first capture the physical space, then the system tracks the operator's position and orientation and recognizes the surfaces or parts to augment. These devices track the operator's movements and update the display in real time, enabling natural, intuitive interaction with virtual objects. The technology behind mixed reality is built to understand and adapt to the physical environment, so virtual elements respond realistically as that environment changes.
Industrial applications
Mixed reality serves three precise use cases in industry.
- Training on rare or hazardous gestures. Repeating a high-risk procedure under realistic conditions, without stopping the production line.
- Remote expertise and assistance. An expert annotates the machine remotely. The annotations stay anchored to the part for the duration of the intervention.
- Hands-free guided quality control. Comparing a part against tolerances in the field of view, without a separate inspection station.
Immersive training cuts skill acquisition time by 60%, with return on investment within 6 to 12 months. On a 200-person industrial site, annual savings range from €300,000 to €800,000.
From pilot to standard deployment
Mixed reality is moving from pilot projects to standardized deployment. As headsets get lighter and platforms grow more interoperable, the technology layer fades. The use case remains: the operator's task, assisted at the right time, in the right place.
In short, mixed reality anchors digital information to the physical object an operator is working on, closing the gap between what they see, what they know and what they do.