Last week, Google showed off their latest advances with their Google Glasses: several professionals jumped out of a helicopter, equipped with the Google Glasses Explorer Edition, and made their way towards the I/O 2012 Event. This week, we're seeing two other companies who may possibly tred along the same path of technological-eyewear: Apple and Olympus.

Olympus' headgear doesn't actually have a camera like the Google Glasses do, nor are they a standalone-unit. Instead, the augmented reality spectacles will connect via bluetooth to your smartphone or tablet. Olympus boasts that the Meg 4.0, the current prototype, will last for 8 hours; however, they expect users to use the glasses in 15-second spurts every three minutes, which just doesn't seem as feasible.

Meanwhile, Apple doesn't even have a working unit yet. Their big news comes in the form of a patent granted to them earlier this week. The patent allows for a dual-lens, dual-HUD eyeglass that projects images directly to your eyes. This would provide a more immersed experience than just simple glasses. Also, by using stereoscopic projection, the user would more likely avoid motion-sickness.

The Olympus augmented-reality glasses have no current release date, and Apple's "iGlass" (for lack of an official name) hasn't even been touted as a product idea - a patent doesn't necessarily mean there's already a game-plan behind it. However, if Apple does join the fray, then we'd be closer to centralizing our market on eyewear and heads-up displays...which definitely can't be a bad thing.

Sources: slashgear, gizmodo