Head-mounted displays have always been a niche product, but they were still relatively commonplace a decade ago. By putting a pair of tiny LCDs right in front of their eyes, HMDs helped digital professionals and extravagant early adopters immerse themselves in a pixelated virtual reality... or at least a private viewing session or two. They've never truly disappeared, of course, and companies like Vuzix even sell relatively affordable versions to this day, but none have captured our interest quite like the HMZ-T1 from Sony.

Sony's not exactly a stranger to the HMD arena, as 1997's Sony Glasstron can attest, but in many ways the HMZ-T1 Personal 3D Viewer thrusts the concept into the modern era. Rather than cheap LCD shades, the headset has a pair of 0.7-inch 1280 x 720 HD OLED screens inside. It takes a single HDMI connection for audio and video, rather than several component or composite video cords, and its slick design is more evocative of our sci-fi anime video game future than the goggles and glasses of old. Why now? Sony's on the stereoscopic 3D bandwagon in a big way, and it turns out it can be a lot easier to enjoy three dimensional content with one screen per eye.