Name the product, then the one record that reframes it. The mixed-reality headset — a device that can blot out the room for a game and then turn semi-transparent to overlay information on it — is sold today as a recent breakthrough. But Google's granted patent US10750162B2, "Switchable virtual reality headset and augmented reality device," issued on August 18, 2020, already describes exactly that dual-mode behavior. The filing names inventors Erik Goossens, Joost Korngold, and Xavier Benavides Palos, and its classifications — G02B 27/0172 for head-mounted image displays and H04N 13/359 for stereoscopic display control — place it squarely in the optics-and-display art that today's headsets occupy.
What it costs, what it earns, who owns it. The engineering problem the patent addresses is the one that still defines the category: a VR headset and an AR headset want opposite things from their optics. VR wants an opaque path and a wide field of view; AR wants the real world to pass through. A device that does both has to switch the optical state, not just the software. Google's grant is a claim on how to make one piece of hardware do both, which is why it matters more than any single demo — it is a structural bet that the two categories collapse into one.
The CPC class is the tell. G02B 27/0172 is not a software class; it is the optics-of-head-mounted-displays class. When a company's filings cluster there rather than in the application-layer G06 classes, it is signaling that the hard, expensive, defensible work is in the light path, not the app. That is the same place Apple, Meta, and Magic Leap have since concentrated their own portfolios.
The timing is the analysis. A patent issued in 2020 typically reflects work filed two to four years earlier, which puts the conception of this switchable headset in the late-2010s window — the same period the public narrative treated VR and AR as separate, competing product lines. The docket says Google was already designing for their merger.
It is worth being precise about scope, because the house rule here is that scope ends where the claim ends. This is a granted patent, not a pending application, so the rights are live. But a grant on a switchable headset architecture does not mean Google shipped the best version of it, or any version at all. The value of the record is as evidence of direction, not of market outcome.
Follow the filing, not the demo. The lesson of US10750162B2 is that the convergence story the industry now tells as new was a settled engineering assumption inside at least one major platform half a decade ago. When the next "mixed reality" device is announced, the question to ask is not whether the idea is novel — the docket says it is not — but whose optical-switching claims it reads on.