Augmented reality holographic display using optical waveguide and holographic optical element

A holographic display method comprising:

• emitting, by a light source module, a beam and allowing the beam to enter an optical waveguide;
• propagating, by a plurality of holographic optical elements (HOEs), the beam entering the optical waveguide inside the optical waveguide while totally reflecting the beam;
• and
• reproducing, by a modulator, a holographic image on the progressing beam, and propagating the beam to the inside of the optical waveguide while totally reflecting the beam,
• wherein the HOEs comprise a first HOE which is attached to the other side of the optical waveguide to transform a beam, which enters after passing through the lens and being reflected from one side of the optical waveguide, into a parallel beam, and to totally reflect the beam toward the other side of the optical waveguide,
• wherein the HOEs further comprise a second HOE which is attached to the other side of the optical waveguide to converge the beam which is totally reflected from the modulator and enters, and to totally reflect the beam toward one side of the optical waveguide, and
• wherein the HOEs further comprise a third HOE which is attached to one side of the optical waveguide to diffuse only part of the beam which is totally reflected from the second HOE and enters, and to totally reflect the beam toward the other side of the optical waveguide.

A holographic display comprising:

• an optical waveguide through which a beam enters and progresses;
• a plurality of holographic optical elements (HOEs) configured to propagate the beam entering the optical waveguide inside the optical waveguide while totally reflecting the beam;
• and
• a modulator configured to reproduce a holographic image on the progressing beam, and to propagate the beam to the inside of the optical waveguide while totally reflecting the beam,
• wherein the HOEs comprise a first HOE which is attached to the other side of the optical waveguide to transform a beam, which enters after passing through the lens and being reflected from one side of the optical waveguide, into a parallel beam, and to totally reflect the beam toward the other side of the optical waveguide,
• wherein the HOEs further comprise a second HOE which is attached to the other side of the optical waveguide to converge the beam which is totally reflected from the modulator and enters, and to totally reflect the beam toward one side of the optical waveguide, and
• wherein the HOEs further comprise a third HOE which is attached to one side of the optical waveguide to diffuse only part of the beam which is totally reflected from the second HOE and enters, and to totally reflect the beam toward the other side of the optical waveguide.

A holographic display method comprising:

• propagating, by a plurality of holographic optical elements (HOEs), a beam entering an optical waveguide inside the optical waveguide while totally reflecting the beam;
• and
• reproducing, by a modulator, a holographic image on the progressing beam, and propagating the beam to the inside of the optical waveguide while totally reflecting the beam,
• wherein the HOEs comprise a first HOE which is attached to the other side of the optical waveguide to transform a beam, which enters after passing through the lens and being reflected from one side of the optical waveguide, into a parallel beam, and to totally reflect the beam toward the other side of the optical waveguide,
• wherein the HOEs further comprise a second HOE which is attached to the other side of the optical waveguide to converge the beam which is totally reflected from the modulator and enters, and to totally reflect the beam toward one side of the optical waveguide, and
• wherein the HOEs further comprise a third HOE which is attached to one side of the optical waveguide to diffuse only part of the beam which is totally reflected from the second HOE and enters, and to totally reflect the beam toward the other side of the optical waveguide.