Near-eye display based on holographic waveguide

Abstract

The present invention discloses a near-eye display based on a holographic waveguide, comprising: an optical waveguide and a group consisting of an array light source, an in-coupling optical element, a reflective spatial light modulator, and an out-coupling optical element which are disposed on both sides of the optical waveguide. The array light source and the in-coupling optical element are located on different sides of the optical waveguide. A human eye viewpoint position is located at the opposite side of the out-coupling optical element. The light emitted by the array light source is reflected by the in-coupling optical element, then irradiates the reflective spatial light modulator to be modulated by the reflective spatial light modulator, and then is reflected to the out-coupling optical element. The modulated light is output from the optical waveguide into human eyes by the out-coupling optical element. The reflective spatial light modulator and the array light source have synchronous driving signals. The display structure of the invention can greatly reduce the size of an optical system, increases the field angle of holographic imaging, and enhances the user's viewing experience.

Description

technical field [0001] The invention belongs to the technical field of near-eye display systems, in particular to a near-eye display based on a holographic waveguide based on an optical waveguide-based holographic light field augmented reality display technology. Background technique [0002] In recent years, many well-known high-tech companies at home and abroad have made great efforts to develop virtual reality and augmented reality technologies. However, most of the current near-eye display solutions use some optical components, such as free-form surfaces, optical lenses, half mirrors, optical waveguides, etc., to project the image source content of the display system placed within the non-photopic distance into the pupil. . However, there are still many challenges in the current solution, such as miniaturization and light weight of the device, low power consumption of the system, high resolution of the image, real-time rendering, and most importantly, visual comfort. A...

AI Technical Summary

Problems solved by technology

However, the resolution loss of the display device is relatively serious, and the viewing angle is small, which cannot provide a better viewing experience.

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