Although Augmented reality is still a new technology, Howard Grub, an Irish telescope maker patented a device called the collimating reflector in the 1900s. Its main purpose was to enable greater accuracy when shooting firearms by augmenting the crosshair view exactly at the user’s target vision. It tried to solve a pertinent challenge of the human eye of being able to focus only on one object at a time. Since then there are numerous categories of devices that shook the tech industry. Augmented reality devices can be broadly categorized into four types-Smart Glasses, Holographic Displays, Handheld Devices and Heads up displays(HUDs).
