Waveguide structure and head-mounted display device

Abstract

The invention discloses a waveguide structure and a head-mounted display device. The waveguide structure comprises a waveguide sheet and a polarizer, the waveguide sheet is provided with a first surface and a second surface which are oppositely arranged, the waveguide sheet comprises a light coupling-in end and a light coupling-out end, light enters the waveguide sheet from the light coupling-in end and is totally reflected between the first surface and the second surface, and the light is emitted out from the light coupling-out end; the side, away from the light coupling-in end, of the waveguide sheet is a first area, the side, away from the light coupling-out end, of the waveguide sheet is a second area, the polarizer is arranged in the first area and / or the second area, the polarizer is provided with a polarization light-transmitting shaft, and the polarization light-transmitting shaft is provided with a polarization light-transmitting hole. The polarization light-transmitting axis of the polarizer is orthogonal to the polarization direction of the incident light. According to the technical scheme, light leakage to the outside can be effectively reduced, so that the privacy of a user is protected.

Description

technical field [0001] The invention relates to the technical field of optical display, in particular to a waveguide structure and a head-mounted display device. Background technique [0002] Head Mount Display (Head Mount Display) sends optical signals to the user's human eyes through various devices set up, such as realizing virtual reality (VR, Virtual Reality), augmented reality (AR, Augmented Reality) or mixed reality (MR, mixed reality ) and other different effects. Among them, augmented reality is to superimpose display images on the basis of real images. In this process, the external light of the head-mounted display device needs to enter the interior of the head-mounted display device, so the internal light of the head-mounted display device is also easily projected outside. . As a result, the internal screen of the head-mounted display device is exposed to the outside, and the user's privacy is leaked. In particular, after the internal light propagates through t...

AI Technical Summary

Problems solved by technology

[0003] Based on this, for the existing head-mounted display devices, after the internal light is transmitted, the polarization state of the light changes, which makes it difficult to effectively reduce light leakage and cause user privacy to be leaked. It is necessary to provide a waveguide structure and The head-mounted display device is designed to effectively reduce the leakage of light to the outside, thereby effectively protecting user privacy

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