More technology stories: Google Glass, Oculus Rift and the other near-eye projection platforms use LEDs as their light sources, which involves a few compromises. The image’s contrast ratio in particular can take a hit, thanks to unwanted spontaneous emission by the diode getting in the way. An actual laser source might be better, if you could design one that doesn’t exhibit spontaneous emission in the first place. EpiCrystals in Finland think they’ve made the laser for the job, so I asked them about it.
And: projecting images into mist or fog for PR purposes isn’t novel, but using a fog curtain as a virtual desktop for user interface purposes might be. A group at Bristol University has designed a prototype, so I paid them a visit and played with it.