This headset display is the one that is actually holographic

What the paper demonstrated

"Holographic Near-Eye Displays for Virtual and Augmented Reality," by Andrew Maimone, Andreas Georgiou and Joel Kollin of Microsoft Research, was published in ACM Transactions on Graphics on 20 July 2017. This is the one entry in this batch where the word 'hologram' applies without qualification: the paper's bibliographic record describes a display using "phase-only holographic projection," applying "Fresnel holography and double phase amplitude encoding" to reconstruct a wavefront rather than project a fixed image through a lens or waveguide. A second bibliographic registry independently confirms the title, authors and venue.

What creates the image, and why it is different

Every other headset in this batch relays a rendered image, made elsewhere, through a lens, waveguide or panel; this display instead computes the actual interference pattern that would produce the desired wavefront, and shows that pattern on a phase-modulating panel so light diffracts into the intended image as it leaves the device. The record states the method achieves "full color, high contrast and low noise holograms with high resolution and true per-pixel focal control" — meaning each point in the image can carry its own simulated depth, addressing the vergence-accommodation conflict directly rather than working around it with a lens array. The same computation, the record states, allows "optical correction models for aberrations and vision defects," so a viewer's prescription could in principle be corrected in software rather than with glasses. The authors report GPU-accelerated computation running "at ≥90 Hz" and describe resulting eyeglasses-like form factors with an "80° field of view."

What the record does and does not establish

This is a research paper describing a working prototype and its computational method, not a shipped or independently tested product; the 80-degree figure and the real-time frame rate are the authors' own reported results, and the sources opened for this piece do not include an independent replication. Computing a full wavefront in real time is a substantially harder problem than displaying a pre-rendered image, which is precisely why, years after publication, no consumer headset in this batch uses this method — every shipping device instead uses waveguides, passthrough cameras or a lens array.

Questions to bring to a demo

• Is the displayed image actually computed as a hologram, or is 'holographic' being used as a name for a waveguide or projection product?
• What resolution and brightness cost comes with generating a full wavefront compared with a conventional panel?
• Does per-pixel focus actually remove eye strain in extended use, or only in a short demonstration?

The distinction is worth holding onto precisely because the word has been used so loosely elsewhere in this batch: this is the rare headset display for which 'holographic' is a description of the optics, not a marketing choice.