How VR headsets lenses works?

Today you will figure out how lenses of the VR headsets work. However, you initially need to comprehend how our eyes work.

The black part of the eyes, or the pupils, has built-in lenses. Receptors are located behind the pupils and allow us to see.

Our eyes have lenses that alter the light incoming so it focuses on our receptors at the back. The distance between your eyes, and the object you are focusing on, will affect how the lens bends. To get sharp images, your lenses will need to bend significantly if you are looking at something very close. The lens doesn't need to bend much if you are looking at something from a distance.

This is why you need to take breaks every hour if you spend a lot of time in front of your computer. Instead, focus on something further away. It helps to prevent eye strain and gives your eyes a chance for relaxation.

Your eyes become less flexible and able to alter the light coming in as you age. This is why teens can focus on objects as close as 7cm in front of them, while older people can't.

We humans are unable to see VR HMDs (Virtual Reality Head Mounted Displays) that are between 3 and 7 cm in front our eyes. We need lenses for VR HMDs that bend light to make it easier for our eyes. Fresnel lenses are used in the HTC Vive and Varjo Aero , while hybrid Fresnel lenses are used in the Oculus Rift CV1. These lenses help us see clearly and keep the lenses thin.

Check the video below to understand more in-details: