Fresnel lenses are thin, lightweight lenses made up of a series of concentric grooves, which allow for the manipulation of light while maintaining a compact form factor. These lenses are especially significant in virtual reality systems because they help enhance the field of view and reduce optical distortion, making the virtual experience more immersive and comfortable for users. The design of Fresnel lenses also allows VR headsets to be lighter and more efficient, which is crucial for long-term usage.
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