Waveguide-based display system

Abstract

The invention discloses a waveguide-based display system, which comprises an image segmentation unit, an optical fiber scanning module and waveguides, and is characterized in that the image segmentation unit is used for segmenting a to-be-displayed image into more than two sub-images; the waveguides are two sets of stacked waveguides, and the first set of waveguide is provided with a coupling grating of which the angular bandwidth is smaller than a preset angle; the optical fiber scanning module comprises at least one scanning brake, two sets of scanning optical fibers are fixed to each scanning brake, emergent light of the first set of scanning optical fibers enters the waveguide at an angle smaller than the angular bandwidth of the first set of waveguide, and emergent light of the secondset of scanning optical fibers enters the waveguide at an angle larger than the angular bandwidth of the first set of waveguide; by utilizing the characteristic that the grating hardly plays a diffraction / reflection role on emergent light exceeding the angular bandwidth of the grating, the optical fiber scanning module can comprise a plurality of scanning optical fibers and can be integrated intoone module, so that the field of view, the resolution ratio and the refresh rate can be improved, and the miniaturization production of near-to-eye display equipment is facilitated.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a waveguide-based display system. Background technique [0002] Most of the existing near-eye display modules used in the augmented reality (Augmented Reality, AR) field have a small field of view. Take the waveguide-based display module in the prior art as an example: the existing waveguide-based display The module generally includes image source 1, eyepiece system 2, coupling-in grating 3, waveguide 4 and output-coupling grating 5, such as figure 1 shown. After the light beam emitted by the image source 1 is collimated by the eyepiece system 2, it is coupled into the waveguide 4 at a certain angle through the coupling grating 3 for total reflection transmission, and the coupling grating 5 set in the waveguide corresponding to the exit pupil position transmits the The light beam is coupled out to the human eye. Since the grating is very sensitive to the incident angle, for c...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a display system based on waveguide to solve the problems of small field of view and inability to miniaturize existing near-eye display technology

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