In contrast to handheld mobiles, AR devices worn like eyeglasses or futuristic visors, such as Microsoft HoloLens and Metavision Meta, may be referred to as optical see-through eyewear augmented reality devices, or simply, smartglasses. As illustrated in the following image, they do not use video to capture and render the real world. Instead, you look directly through the visor and the computer graphics are optically merged with the scene:
The display technologies used to implement optical see-through AR vary from vendor to vendor, but the principles are similar. The glass that you look through while wearing the device is ...
