It’s been more than a year since we first heard about Leap Motion’s new, Open Source augmented reality headset. The first time around, we were surprised: the headset featured dual 1600×1440 LCDs, 120 Hz refresh rate, 100 degree FOV, and the entire thing would cost under $100 (in volume), with everything, from firmware to mechanical design released under Open licenses. Needless to say, that’s easier said than done. Now it seems Leap Motion is releasing files for various components and a full-scale release might be coming sooner than we think.
Leap Motion first made a name for themselves with the Leap Motion sensor, a sort of mini-Kinect that only worked with hands and arms. Yes, we’re perfectly aware that sounds dumb, but the results were impressive: everything turned into a touchscreen display, you could draw with your fingers, and control robots with your hands. If you mount one of these sensors to your forehead, and reflect a few phone screens onto your retinas, you have the makings of a stereoscopic AR headset that tracks the movement of your hands. This is an over-simplified description, but conceptually, that’s what Project North Star is.
The files released now include STLs of parts that can be 3D printed on any filament printer, files for the electronics that drive the backlight and receive video from a laptop, and even software for doing actual Augmented Reality stuff in Unity. It’s not a complete project ready for prime time, but it’s a far cry from the simple spec sheet full of promises we saw in the middle of last year.
You may remember that earlier this year Leap Motion revealed Project North Star, a kind of open-source reference design for an Augmented Reality (AR) headset. While it’s not destined to make high scores in the fashion department, it aims to be hacker-friendly and boasts a large field of view. There’s also an attractive element of “what you see is what you get” when it comes to the displays and optical design, which is a good thing for hackability. Instead of everything residing in a black box, the system uses two forward-facing displays (one for each eye) whose images are bounced off curved reflective lenses. These are essentially semitransparent mirrors which focus the images properly while also allowing the wearer to see both the displays and the outside world at the same time. This co-existence of both virtual and real-world visuals are a hallmark of Augmented Reality.
A serious setback to the aspiring AR hacker has been the fact that while the design is open, the lenses absolutely are not off the shelf components. [Smart Prototyping] aims to change that, and recently announced in a blog post that they will be offering Project North Star-compatible reflective lenses. They’re in the final stages of approving manufacture, and listed pre-orders for the lenses in their store along with downloadable 3D models for frames.
When Leap Motion first announced their open-source AR headset, we examined the intruiguing specifications and the design has since been published to GitHub. At the time, we did note that the only option for the special lenses seemed to be to CNC them and then spring for a custom reflective coating.
If the lenses become affordable and mass-produced, that would make the design much more accessible. In addition, anyone wanting to do their own experiments with near-eye displays or HUDs would be able to use the frame and lenses as a basis for their own work, and that’s wonderful.