Offset display light machine, method thereof and near-to-eye display equipment

Abstract

The invention provides an offset display light machine, a method thereof and near-to-eye display equipment, which can effectively reduce or eliminate ghost images in a display picture and improve the impression. The offset display light machine comprises an illumination assembly used for emitting an illumination light beam; the bias imaging assembly is used for modulating the image light beam in a deflection manner for imaging; the relay display assembly is arranged in a light path between the illumination assembly and the bias imaging assembly, and the relay display assembly is used for modulating an illumination light beam from the illumination assembly into an image light beam so as to spread the image light beam to the bias imaging assembly; the bias imaging assembly is used for deflecting the image light beam from the relay display assembly so as to obliquely project the image light beam to the coupling-in area of the waveguide display body, so that the view field of the bias display light machine is biased.

Description

technical field [0001] The present invention relates to the technical field of near-eye display, and in particular, to an offset display optical machine, a method thereof, and a near-eye display device. Background technique [0002] In recent years, with the continuous development of new display technologies, the related market for near-eye display devices (such as AR or VR glasses, etc.) has become increasingly mature. At present, among the various solutions in the field of near-eye display, the mainstream solutions include fold-back structures (Birdbath, BB), free-form surface prisms, arrayed optical waveguides, and diffractive optical waveguides. Among them, the AR mode based on the waveguide solution Although the device has been widely used due to its advantages of small size, light weight and good experience, AR display modules based on diffractive optical waveguides usually appear ghost images in the AR display screen, affecting the look and feel, so how to effectively...

AI Technical Summary

Problems solved by technology

At present, among the various schemes in the field of near-eye display, the mainstream schemes include catadioptric structures (Birdbath, BB), free-form surface prisms, array optical waveguides, and diffractive optical waveguides. Among them, the waveguide-based AR mode Although the group has been widely concerned and applied due to its advantages of small size, lightness, and good experience, AR display modules based on diffractive optical waveguides usually have ghost images in the AR display screen, which affects the perception. Therefore, how to effectively reduce the It is particularly important and meaningful to eliminate ghost images in the display screen

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