Optical structures for reducing distortion and dispersion for virtual reality headsets

Abstract

The invention discloses a distortion and dispersion reducing optical structure for a VR helmet. The optical structure comprises left and right optical systems which are completely the same in structure and arranged symmetrically; each optical structure comprises a double-convex optical lens, an inwardly-concave optical lens and a display screen which are coaxial in the visual line direction of the eyes and arranged successively; the optical sides of the two sides of the inwardly-concave optical lens include a plane and a recessed surface respectively; the surface of the display screen is pasted to the plane of the inwardly-concave optical lens or is arranged in parallel with the plane by being separated from the plane for a micro distance; the recessed surface of the inwardly-concave optical lens is orientated to the double-convex optical lens, and light emitted by the display screen is refracted by the inwardly-concave optical lens and the double-convex optical lens and then enters the eyes; and the left and right optical systems can approach each other or be separated from each other to adapt to the eyes of different interpupillary distances, and the display screen can move back and forth to different the eyes of different eyesight. The optical structure can reduce distortion and dispersion of the optical systems, reduce the image processing burden, improve the image quality, and improve the immersion degree of users.

Description

technical field [0001] The invention relates to an optical structure in a virtual reality helmet, in particular to an optical structure for reducing distortion and dispersion of the virtual reality helmet. Background technique [0002] Virtual Reality (VR) technology is a computer-generated, interactive and immersive visual virtual environment proposed in the 1980s. It can generate a variety of virtual environments as required and is widely used in urban planning. , driving training, interior design and other fields. In recent years, with the development of computer computing power and various types of sensors, various types of virtual reality helmets have appeared on the market, which are basically composed of a display screen or a mobile phone and a pair of eyepieces, through which the human eye can see the enlarged images on the screen. For images, the sensor senses the changes of the human head and adjusts the images on the left and right screens, so that the human eyes...

AI Technical Summary

Problems solved by technology

[0003] At present, the optical structure of virtual reality helmets on the market is basically the human eye. The normals of the lens and the screen are collinear. Distortion and dispersion will become larger and larger. At present, most of the methods of computer anti-dispersion and anti-distortion compensation are used to reduce the influence of these two aberrations, but this will increase the performance requirements of computer graphics cards, and the degree of edge blur cannot be improved. High, so the best way is to eliminate as much as possible at the lens level

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