First published November 2026

How do holographic displays work?

A holographic display for VR recreates the light waves of a three-dimensional scene so the eye focuses naturally at each depth. The technology is demonstrated in lab prototypes today and no VR headset ships with it yet.

What makes a display holographic?

A hologram is a recording of an interference pattern that can reproduce a three-dimensional light field through diffraction. Two light beams meet on a plate and the pattern of their interference is stored. Shine a light through that pattern and the beam rebuilds the original field in space. A viewer looking into the rebuilt field sees the scene at its recorded depths.

Computer-generated holography (CGH) computes the wavefront instead of recording it. Software works out the phase and amplitude the screen must present at every point. A spatial light modulator then shapes the light to match that calculation. A display is holographic when it reconstructs a wavefront in this way.

Why do VR headset displays want holography?

A conventional near-eye display puts the image at one fixed focal plane. The panel is a single flat surface and every pixel reaches the eye from the same distance. Convergence is the inward turn of the eyes for a near object and accommodation is the focus change that goes with it. The eyes converge on the apparent depth of the object in the scene while the surface holds the focus at the screen. Vision researchers call that disagreement the vergence-accommodation conflict.

A holographic display rebuilds the wavefront so the eye can focus naturally at each depth. Depth control runs per pixel. A panel at arm’s length and a machine at the far wall can therefore sit at their own focus distances at the same moment. A design review can show a component at reading distance while the assembly around it sits two metres back.

No shipping headset rebuilds those depths yet. The closest display works another way: see-through AR glasses lay a flat monitor or a set of instructions over the view in front of the wearer and leave the focus where it was.

What have the Stanford prototypes shown?

Holographic Glasses for Virtual Reality (Kim, Gopakumar, Choi, Peng, Lopes and Wetzstein, ACM SIGGRAPH 2022) put a holographic near-eye display into an eyeglasses-like form factor. The optical stack combines a pupil-replicating waveguide, a spatial light modulator and a geometric phase lens. It measures 2.5 millimetres thick and delivers full-colour 3D holographic images. A waveguide carries the light along a thin slab and replicates the exit pupil. The eye keeps the image as it moves. At that thickness the stack fits inside a glasses frame.

The team built a benchtop version and a wearable one. The wearable reached a 22.8 degree diagonal field of view. The paper presents it as a feasibility prototype. Time-multiplexed Neural Holography, also from SIGGRAPH 2022, is the CGH algorithm framework behind that line of work. The algorithm work exists because a wavefront calculation across millions of pixels asks a lot of the processor.

Synthetic Aperture Waveguide Holography (Nature Photonics, July 2025) came from a Stanford and Meta collaboration. The design pairs a custom waveguide with AI-driven CGH algorithms in an optical stack under 3 millimetres. Its compact prototype reaches a 38 degree diagonal field of view with 1.2 arcminute diffraction-limited resolution. Human acuity is usually given as about one arcminute. The optics carry detail at the edge of what the eye resolves. Road to VR describes the output as true holograms produced by reconstructing the full light field.

Stanford presents the programme as a trilogy: the 2024 waveguide paper, the 2025 working prototype and a commercial product that may still be years away. The stated research goal is passing the Visual Turing Test where a viewer cannot tell the display from a real scene.

Who is building holographic display technology now?

VividQ spun out of the University of Cambridge in 2017. The company develops computer-generated holography software and optical designs for headset makers to license. Its development kits are CoReality AR, CoReality VR and CoReality HUD.

In January 2023 VividQ and Dispelix announced a 3D waveguide combiner that displays 3D content at variable depth. A Display Daily reviewer examined a 2023 demonstration and found a holographic image at the centre of the view within a wider stereoscopic field. In January 2024 the company demonstrated retina-resolution holograms on a 4K display and announced a partnership with JVCKenwood.

Company material describes these designs as removing the conflict between focus and convergence. The claim is a design aim rather than a measured result in a shipped headset. No consumer VR headset with computer-generated holography has been announced or found as of November 2026.

Gordon Wetzstein leads the Stanford work and expects the approach to reach the mainstream. “In the future, most virtual reality displays will be holographic,” he says. Holography, he adds, “offers capabilities we can’t get with any other type of display in a package that is much smaller than anything on the market today.”

What is marketed as a hologram but is not?

Pepper’s Ghost is a stage illusion from 1862. A hidden brightly lit scene reflects off a sheet of glass and appears to float in the room. Concert productions still use the technique to place a performer on stage.

LED fan displays spin a strip of lights and rely on persistence of vision to draw a floating image. A peer-reviewed paper describes them as pseudo-holograms. Lenticular screens send two ordinary views to different eyes. Each of the three builds its image from something already lit or already rendered.

One test separates the two camps. Does the display reconstruct a light wavefront, or does it reflect, rotate or direct pre-rendered views? A holographic display answers the first. A Pepper’s Ghost rig, an LED fan and a lenticular panel answer the second.

The labels blur in the market and where AR, MR and VR sit on one span sorts them by what each does with the room.

An events team can meet a hologram brief today with any of those three techniques. A holographic display in a VR headset waits on a commercial product that Stanford places years away.

Until a holographic headset arrives, a stand runs on the displays of the day. The expo activations we build use the headsets we run now so the plan on the stand matches the hardware that turns up.

Sources

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