Imagine stepping into a virtual world, but instead of crisp, modern screens, you're greeted by the warm, analog glow of vintage technology! This isn't your typical VR headset; it's a fascinating throwback that challenges our modern perceptions of virtual reality. A maker known as "dooglehead" has ingeniously crafted a VR headset that deliberately eschews the sleek LCD and OLED displays found in today's devices. Instead, it embraces the charm of the past by utilizing Sony Watchman CRTs as its visual core.
"dooglehead" explains the inspiration behind this unique project: "Modern VR headsets are really good, but they all use LCD and OLED displays. I've always found there to be something appealing about playing games on CRTs, and I've been wondering what it would be like to be in a virtual world where everything in my field of view is made up of images drawn on CRTs."
For decades, Cathode-Ray Tubes (CRTs) were the undisputed champions of display technology. From radar screens and oscilloscopes to the computers and televisions that filled our homes, CRTs were everywhere. Their magic lies in a vacuum-sealed glass tube where a magnetically guided electron beam strikes a phosphor-coated surface. This energizes the phosphor, causing it to emit light. By rapidly scanning this beam line by line, approximately 50 times per second, a seemingly stable image is formed. This process, while dated, offers certain advantages over modern flat-panel displays in various metrics, with one significant drawback: weight. CRTs are inherently bulky and heavy, making them far from ideal for wearable devices.
Interestingly, even the earliest VR headsets often opted for simpler LCD panels over the higher-quality, albeit heavier, CRTs. However, "dooglehead" proves that it's indeed possible to build a functional VR headset using this classic technology.
The current iteration of the headset features a temporary cardboard enclosure, with plans for a more durable 3D-printed shell in the future. At its heart are compact 2.7-inch CRTs originally designed by Sony for their Watchman portable TV series. To bridge the gap between modern and vintage tech, an FPGA handles the crucial logic. It takes an HDMI signal from a PC and expertly splits it into two separate analog signals, one for each CRT display. To track your movements in this virtual space, standard "lighthouse" trackers are employed to monitor head position and orientation. Powering this retro-futuristic setup is surprisingly simple, with each CRT drawing approximately 200mA via USB.
While the displays are black-and-white, they are remarkably responsive. The headset is quite usable, provided you exercise caution around the exposed high-voltage electronics. "dooglehead" notes that the headset weighs in at around 544 grams (approximately 1.2 lbs), which is not as heavy as one might expect, comparing it favorably to the weight of many modern VR headsets. "Obviously, it doesn't look great compared to a modern headset, but my expectations were very low – so I was just surprised to see it looked as good as it did."
But here's where it gets controversial... While the creator expresses satisfaction with the visual quality given the constraints, some might argue that the limitations of black-and-white CRT displays inherently detract from the immersive potential of VR. Is the nostalgic appeal of CRTs enough to overcome the visual fidelity sacrificed? Furthermore, the inherent danger of working with uncased CRTs, which carry extremely high voltages, is a significant concern. Should such a project be undertaken without robust safety measures, even for the sake of innovation? What are your thoughts on this fascinating blend of old and new technology in the realm of virtual reality? Let us know in the comments below!
