Virtual reality headset

A head-worn device that presents computer-generated visual and often audio environments, typically tracking head movement to create an immersive experience.

Head-mounted display: A wearable display positioned in front of the eyes, including devices used for virtual and augmented reality. Virtual reality headsets are a specialized kind of head-mounted display.
Virtual reality: A computer-mediated experience that presents an interactive environment as if it were spatially present. The headset is a common interface for experiencing virtual reality.
Virtual reality gaming: Video gaming in which a headset presents an interactive three-dimensional virtual environment. Gaming is a prominent use that depends on responsive head tracking and immersive visuals.
Augmented reality headset: A head-worn device that overlays digital content onto a view of the physical environment. Unlike a typical virtual reality headset, it keeps the surrounding world visible.
Stereoscopy: A technique that presents different images to each eye to create an impression of depth. Separate views for the two eyes supply much of a headset’s perceived depth.
Field of view: The extent of the visible scene, measured as an angle from a viewpoint. A headset’s field of view limits how much of the virtual scene fills vision.
Virtual reality therapy: The use of simulated environments in psychological or physical treatment. Headsets can deliver controlled scenarios for exposure and rehabilitation exercises.
Mixed reality: A spectrum of systems that combine physical and digital content with spatial interaction. Mixed-reality devices blend virtual objects with surroundings rather than replacing the view entirely.
Fresnel lens: A thin optical lens made of concentric stepped sections that approximate a conventional curved lens. Many headsets use Fresnel optics to magnify small displays within a compact enclosure.
Refresh rate: The number of times per second a display updates its image, measured in hertz. Higher refresh rates can make head motion appear smoother in the headset.

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SmartwatchCompared with: It represents a body-worn computer built for immersive viewing rather than glanceable wrist use.