Mixed reality display device

A mixed reality display device, comprising:

• a waveguide element;
• an image display device located on a first side of the waveguide element and configured to emit a light field image;
• an imaging lens located between the waveguide element and the image display device and configured to image the light field image at infinity;
• a first diffractive optical element located on a second side of the waveguide element opposite to the first side and configured to guide the light field image into the waveguide element;
• a first volume holographic optical element located on the second side of the waveguide element and configured to guide the light field image;
• a second volume holographic optical element located on the first side of the waveguide element and configured to guide the light field image, wherein the first volume holographic optical element and the second volume holographic optical element have an angular selectivity, configured to extract a specific viewing angle, and the second volume holographic optical element has a lens array function to form a light field image source;
• and
• a second diffractive optical element located on the second side of the waveguide element and having a lens array function to transfer the light field image source into a three-dimensional image.