If, like me, you’ve been trying to figure out just how Google Glass works then you’ll definitely want to check out this insightful infographic created by Martin Missfeldt. The infographic is a handy, albeit brief glimpse at the hardware setup, including camera, microphone, and speaker locations, and it also demonstrates how the all important digital image overlay works.
It’s actually a surprisingly simple piece of technology, component wise at least, but it’s based on a very clever idea. The most important, and innovative piece of technology, is certainly the projector/prism combination. The mini-projector inside Google Glass projects an image onto a semi-transparent prism, allowing digital and real images to be combined and sent directly on the retina in the eye. You can then simply tilt the prism in order to improve the focus of the image.
I’ve always wondered how Google Glass will work ergonomically, considering peoples individual face shapes and preferences for how intrusive the overlay might be. Fortunately it also looks like that you can adjust the position of the digital image by adjusting where Google Glass sits on your nose, which seems obvious now that I think about it. Placing Google Glass high on the nose moves the image into your peripheral vision so that you need turn the eye up to focus on the image correctly. Alternatively you can arrange the image overlay more centrally into your vision if you so desire, thanks to the semi-transparent prism.
Martin Missfeldt still has some concerns about how the device will work for people who require normal glasses. Sadly it seems that some additional adjustments will be required in order to focus the image correctly.