Reconstructing objects with display zero order light suppression

An optical device comprising:

• an optically diffractive component;
• and
• an optically redirecting component,
• wherein the optically diffractive component is configured to diffract light at an incident angle onto a display comprising a plurality of display elements spaced with gaps on the display, the display is configured to diffract a portion of the light illuminating the display elements, and the optically redirecting component is configured to transmit the portion of the light to form a holographic scene and to redirect display zero order light away from the holographic scene in a three-dimensional (3D) space to suppress the display zero order light in the holographic scene, the display zero order light comprising reflected light from the gaps on the display, and
• wherein the optical device is configured such that the display zero order light is incident on the optically redirecting component at a redirecting incident angle larger than that of the diffracted portion of the light, and the optically redirecting component is configured to diffract the display zero order light through the optically redirecting component with a substantially larger diffraction efficiency than the diffracted portion of the light.

A method of fabricating an optical device comprising an optically diffractive component and an optically redirecting component, the method comprising:

• forming the optically diffractive component on a first side of a substrate;
• and
• forming the optically redirecting component on a second side of the substrate opposite to the first side,
• wherein the optically diffractive component is configured to diffract light at an incident angle onto a display that is configured to diffract a portion of the light illuminating display elements that are spaced with gaps on the display, and the optically redirecting component is configured to transmit the portion of the light to form a holographic scene and to redirect display zero order light away from the holographic scene in a three-dimensional (3D) space to suppress the display zero order light in the holographic scene, the display zero order light comprising reflected light from the gaps on the display, and
• wherein the optical device is configured such that the display zero order light is incident on the optically redirecting component at a redirecting incident angle larger than that of the diffracted portion of the light, and the optically redirecting component is configured to diffract the display zero order light through the optically redirecting component with a substantially larger diffraction efficiency than the diffracted portion of the light.

A system comprising:

• a display comprising display elements separated with gaps on the display;
• and
• an optical device comprising:
• an optically diffractive component;
• and
• an optically redirecting component,
• wherein the optically diffractive component is configured to diffract light at an incident angle onto the display, the display is configured to diffract a portion of the light illuminating the display elements, and the optically redirecting component is configured to transmit the portion of the light to form a holographic scene and to redirect display zero order light away from the holographic scene in a three-dimensional (3D) space to suppress the display zero order light in the holographic scene, the display zero order light comprising reflected light from the gaps on the display, and
• wherein the optical device is configured such that the display zero order light is incident on the optically redirecting component at a redirecting incident angle larger than that of the diffracted portion of the light, and the optically redirecting component is configured to diffract the display zero order light through the optically redirecting component with a substantially larger diffraction efficiency than the diffracted portion of the light.