thumbnail Are the Biconvex Lens Important for a VR Headset

Are the Biconvex Lens Important for a VR Headset?


The lenses in a head-mounted display (HMD) for virtual reality allow the user to focus on images produced by displays that are very near to their eyes. The lenses are positioned between the monitors and the viewer’s eyes to make the images appear at a comfortable viewing distance.

The biconvex lens comprises a convex lens body, a solid lens created by the butt joint of the first and second spherical surface. For the human eye, these are used to create a virtual image, while photographic films or optical sensors are used to create a real image.

Are the Biconvex Lens Important for a VR Headset?

Fresnel lenses have been used in most VR headsets since 2016. Although Fresnel lens designs for various headsets do differ slightly, as of 2022, the majority of headsets use the same lens technology. Fresnel lenses, which have the same curvature as standard lenses but are segmented, are sometimes used in VR HMDs to make the lenses lighter and thinner.

However, you have to give up some things when using Fresnel lenses. A lens with many segments can be made to produce a sharper image. But if the peaks don’t have the proper curvature, you lose light because it gets scattered there. Fresnel lenses are widely used, so they must be the best, right? It all depends on what you mean by it.

They are unquestionably the most affordable, which is why everyone uses them. Cheap plastics can also be used to make them with ease. They were ideal for the original generation of VR headsets because they were lightweight and inexpensive to produce. The main disadvantage of these designs is that as your eyes move away from the center, the ridges in them scatter light.

A straightforward lens known as a “biconvex lens” is made up of two convex surfaces that are spherical in shape and typically have the same radius of curvature. The lens of the human eye serves as the best illustration of a biconvex lens.

The light rays from nearby objects must be refracted more sharply by the eye to focus them on the retina; in contrast, light rays from distant objects only require minimal refraction. To obtain this, it must have a very flexible form that allows for shape modification and the convexity to be increased or decreased.

The amount of refraction increases with convex lens height. The Biconvex lenses are well known for their equal radii on both sides and symmetrical form. They are commonly recommended for virtual imaging of real-world objects and for a positive conjugate ratio.


The biconvex lens, a kind of straightforward lens, has a variety of uses, including but not restricted to the focusing and control of laser beams, high-quality imaging, and other kinds of optical instruments. Because of how human eyes work, virtual reality head-mounted displays (HMDs) require lenses.

Therefore, when searching “are the biconvex lens important for a VR headset?” a biconvex lens is among the best lenses that may be used when a light beam incident on a lens has a diverging nature also converges symmetrically after leaving the lenses.

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