Virtual reality equipment capable of inhibiting myopia deepening and optical path structure thereof

Abstract

The invention relates to a virtual reality equipment capable of inhibiting myopia deepening and optical path structure thereof. The optical path structure comprises a main optical path and an auxiliary optical path, the main optical path forms a main image on the retina, and the auxiliary optical path forms a background image in front of or behind the retina, so that optical defocusing is formed,and a virtual image is formed by superposing spectroscopes at a certain distance in front of the retina. Myopia defocusing is enhanced to counteract myopia development; the main optical path and the auxiliary optical path are the positive lens group and then the negative lens group, so that the lens size of the head-mounted display equipment can be effectively compressed in a large field of view,the weight of the equipment is reduced, and the use requirements of light weight and miniaturization of the equipment are met; for a user suffering from hyperopia, the distance between the second negative lens group in the auxiliary light path and the spectroscope can also be changed, so that a background image is imaged behind the retina to control hyperopia deepening. 本申请一种可抑制近视加深的虚拟现实设备及其光路结构，所述光路结构包括主光路和副光路，主光路在视网膜上形成主图像，副光路在视网膜前方或后方形成背景图像，从而形成光学离焦，通过分光镜在前方一定距离叠加形成虚像，加强近视散焦来抵消近视发育；主光路和副光路均为先正透镜组再负透镜组，可在大视场下有效压缩头戴显示设备的镜片尺寸，减轻设备的重量，满足设备轻量化、小型化的使用要求；对于患有远视的用户，同样可以改变副光路中第二负透镜组与分光镜的距离使得背景图像成像于视网膜后方以控制远视加深。