Holographic diffraction waveguide lens and augmented reality color display device

Abstract

The invention provides a holographic diffraction waveguide lens, which comprises a lens body and two functional areas located on the surface of the lens body, wherein the functional areas are of a periodic grating structure, the two functional areas are a coupling-in area and a coupling-out area respectively, incident image light is projected to the coupling-in area and diffracted by the periodicgrating structure of the coupling-in area, the diffracted light is conducted and coupled to the coupling-out area along the waveguide total reflection, and is output after being diffracted by the periodic grating structure of the coupling-out area. The invention further provides an augmented reality color three-dimensional display device applying the holographic diffraction waveguide lens. According to the holographic diffraction waveguide lens, the ultrathin optical lens is adopted, a nanoscale grating structure is arranged, and compared with a traditional geometrical optical method, the holographic diffraction waveguide lens is better in portability. According to the augmented reality color three-dimensional display device, the holographic diffraction waveguide lens group made of two layers or three layers or multiple layers of waveguide lenses is adopted, so that the viewing experience is better.

Description

technical field [0001] The invention belongs to the field of display technology, and more specifically relates to a holographic diffraction waveguide lens and an augmented reality color three-dimensional display device using the waveguide lens. Background technique [0002] Augmented reality technology is a new technology that "seamlessly" integrates real-world information and virtual world information. It not only shows real-world information, but also displays virtual information at the same time. The two kinds of information complement and superimpose each other. In visual augmented reality, users use the helmet display to recombine the real world with computer graphics, and then they can see the real world surrounding it. With the development of virtual reality and augmented reality technology, near-eye display devices have developed rapidly, and the method of coupling image light into the human eye using traditional optical components has been adopted, including the use...

AI Technical Summary

Problems solved by technology

For example, Lumus realizes the AR display through the array grating design, and its display has the effect of pupil expansion, but there is a blind effect, which affects the viewing experience

Therefore, the current mainstream display solutions cannot achieve good display effects while reducing the thickness of the display unit.

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