Light Field Lab makes holograms you can walk up to.

Here is a useful test for anyone selling you a hologram: ask whether it hides the things behind it. Most "holograms" you have seen - the concert ghosts, the museum apparitions, the shimmering figures at trade shows - are variations on a 160-year-old parlor trick called Pepper's Ghost, a reflection off angled glass. They are translucent. You can see the wall through them. They are, in the strict optical sense, not there.

Light Field Lab's demo, by contrast, includes a chameleon. It is affectionately named Chammie. It sits on a branch, changes color, and - this is the part that matters - completely blocks the plants positioned behind it, exactly the way a real animal would. Occlusion is an unglamorous word for a profound difference. It means the display is not casting a faint image into the room; it is reconstructing, pixel by pixel, the actual field of light that a solid object would send toward your eyes.

The Lytro inheritance

The company was founded in 2017 by three people who had spent years on the opposite side of this problem. Jon Karafin, Brendan Bevensee, and Ed Ibe came from Lytro, the camera startup that tried to commercialize light-field photography - the idea that you could capture not just a flat image but the direction of every ray, and refocus a photo after taking it. Lytro built the world's first professional light-field cinema camera. It also, eventually, went out of business.

The founders took the inconvenient lesson and inverted it. If you can record a light field, the reasoning went, you can rebuild one. Karafin had run Lytro Cinema and come up through Digital Domain's visual-effects world. Bevensee holds a PhD in particle physics, the kind earned near a collider, which is an unusual credential for a display company and a very useful one when your product is essentially a machine for controlling billions of wavefronts. Ibe, the hardware lead, arrived from IBM. It is not the resume you would draft for a consumer-electronics startup. It is roughly the resume you would need to attempt this.

What SolidLight actually is

The product is called SolidLight, and physically it is a tile. Each self-emissive, bezel-less panel - about 28 inches - contributes on the order of 2.5 billion pixels. The panels snap together into a wall the way video-wall modules already do, except the density is on another planet: roughly 10 billion pixels per square meter. Assemble enough of them and you get a surface that can throw objects into the space in front of it. Scale the wall up and the pixel count runs into the hundreds of billions.

This is a deliberately boring go-to-market disguised as a wild one. Light Field Lab is not asking anyone to buy a new category of gadget. It is entering the existing global video-wall market - the business of corporate lobbies, entertainment venues, museums, and public displays - and offering a wall that happens to have a third dimension. Sell the future through a door the customer already walks through.

The tell in the cap table

You can learn a lot about a hardware company from who is willing to fund it, because manufacturing is where optimistic demos go to die. Light Field Lab has raised about $85 million. The $50 million Series B in early 2023 was led by the game developer NCSOFT and included Corning - the glass company - LG Tech Ventures, OTOY, and Gates Frontier, the investment vehicle of Bill Gates. Earlier rounds pulled in the venture arms of Samsung, Verizon, Bosch, and Liberty Global.

Read that list again. It is not a collection of momentum investors chasing a buzzword. It is, disproportionately, the display supply chain and the companies that would have to help build the thing at volume. When Corning and LG and Samsung all put money into the same holographic startup, they are not buying a demo. They are buying a bet on whether the demo can become a product line.

The part nobody has solved yet

Which is also the honest caveat. TIME named SolidLight one of the Best Inventions of 2022; the SETI Institute's chief executive, after seeing an interactive holographic alien rendered on the platform, called it "the precursor to Star Trek's Holodeck." Those are lovely sentences. They are also the easy part. The hard part - the part that will decide whether Light Field Lab is a footnote or a category - is manufacturing tens of billions of controllable pixels at a price a museum or a mall can justify, reliably, at scale.

The company is now guiding toward delivering its Volumetric systems and lower-bandwidth versions of the technology to market, driving multiple image planes from a single computer. A team of roughly nineteen people is attempting to make the flat screen - undefeated for a century - look quaint. It may not work. But the ambition is refreshingly literal. Most startups say they are reimagining something. Light Field Lab is trying to reproduce the exact light a real object would emit, and then sell it by the panel.