Inside any VR headset today, inside the roundish light-blocking goggle set, you’ll find two things: a screen that displays the virtual world you’ll be seeing, and a set of lenses in front of that screen. A lot of attention is paid to display technology, which is familiar to many technology enthusiasts.
What resolution is that? What is the refresh rate, contrast ratio, etc.? But just as important as the lens in front of this screen. If you are looking for VR lenses, you can also opt for the DJI FPV Goggle Prescription lenses online.
Why are lenses such an important part of VR headphones and how do they affect the quality of the VR experience?
Lenses have been around for thousands of years and the basic principles behind them are easy to follow. Take a simple piece of glass; You will find that the display is distorted.
Glass (or water or translucent material) bends light that passes through it. Build shapes out of materials to bend light the way you want and have a lens.
Snell's law explains the physics behind it. Instead of showing you big formulas, here are the relevant terms for those equations so you know what we're looking for in lens properties:
The first property is known as the index of refraction and indicates how much the material can bend incident light. This effect occurs because light slows down as it enters matter, and the slower it gets, the more it bends. A common example is air, which is only slightly refracted, too (with increasing refractive index) water, plastics, and glass.
Another property is the angle of the material relative to the angle at which light falls on it, which means that light is bent depending on 1) the shape of the lens, 2) the time it takes to pass through the lens, before leaving. the lens, or – how thick the lens is, and 3) the wavelength (color) of light.