ORDERED GEOMETRIES FOR OPTOMIZED HOLOGRAPHIC PROJECTION
Disclosed are systems for directing energy according to holographic projection. Configurations of waveguide arrays are disclosed for improved efficiency and resolution of propagated energy through tessellation of shaped energy waveguides.
1 . An energy waveguide system for defining a plurality of energy propagation paths comprising:
an array of energy waveguides, the array comprising a first side and a second side, and being configured to direct energy therethrough along a plurality of energy propagation paths extending through a plurality of energy locations on the first side;
wherein a first subset of the plurality of energy propagation paths extend through a first energy location;
wherein a first energy waveguide is configured to direct energy along a first energy propagation path of the first subset of the plurality of energy propagation paths, the first energy propagation path defined by a first chief ray formed between the first energy location and the first energy waveguide, and further wherein the first energy propagation path extends from the first energy waveguide towards the second side of the array in a unique direction which is determined at least by the first energy location; and
wherein each waveguide of the array of waveguides comprises a shape of a set of one or more shapes configured to tessellate across a transverse plane of the energy waveguide system, the array of energy waveguides being arranged in a tiling of the one or more shapes across the transverse plane of the energy waveguide system.
2 . The energy waveguide system of claim 1 , wherein there are substantially no empty spaces between the energy waveguides of the array of energy waveguides.
3 . The energy waveguide system of claim 1 , wherein energy directed along the first energy propagation path through the first energy waveguide substantially fills a first aperture of the first energy waveguide; and
the energy waveguide system further comprising an energy inhibiting element positioned to limit propagation of energy along a portion of the first subset of the plurality of energy propagation paths that do not extend through the first aperture;
wherein a first portion of the plurality of energy propagation paths extend through a first region, and a second portion of the plurality of energy propagation paths extend through a second region, the first and second regions separated by the energy inhibiting element, and wherein the first and second portions of energy propagation paths intersect at the second side of the array.
4 . The energy waveguide system of claim 3 , wherein the energy inhibiting element is located on the first side between the array of energy waveguides and the plurality of energy locations.
5 . The energy waveguide system of claim 3 , wherein the first energy waveguide comprises a two-dimensional spatial coordinate, and wherein the unique direction determined at least by the first energy location comprises a two-dimensional angular coordinate, whereby the 2D spatial coordinate and the 2D angular coordinate form a four-dimensional (4D) coordinate set.
6 . The energy waveguide system of claim 5 , wherein energy directed along the first energy propagation path comprises one or more energy rays directed through the first energy waveguide in a direction that is substantially parallel to the first chief ray.
7 . The energy waveguide system of claim 3 , wherein energy directed along the first energy propagation path converges with energy directed along a second energy propagation path through a second energy waveguide.
8 . The energy waveguide system of claim 7 , wherein the first and second energy propagation paths converge at a location on the second side of the array.
9 . The energy waveguide system of claim 7 , wherein the first and second energy propagation paths converge at a location on the first side of the array.
10 . The energy waveguide system of claim 7 , wherein the first and second energy propagation paths converge at a location between the first and second sides of the array.
11 . The energy waveguide system of claim 3 , wherein each energy waveguide comprises a structure for directing energy, the structure selected from a group consisting of:
a structure configured to alter an angular direction of energy passing therethrough;
a structure comprising at least one numerical aperture;
a structure configured to redirect energy off at least one internal surface;
an energy relay.
12 . The energy waveguide system of claim 3 , wherein the energy inhibiting element comprises a structure for attenuating or modifying energy propagation paths, the structure selected from a group consisting of:
an energy blocking structure;
an element configured to alter a first energy propagation path to alter a fill factor of the first aperture;
a structure configured to limit an angular extent of energy proximate the first energy location.
13 . The energy waveguide system of claim 12 , wherein, when the energy inhibiting element is configured to limit an angular extent of energy proximate the first energy location.
14 . The energy waveguide system of claim 12 , wherein the energy inhibiting structure comprises at least one numerical aperture.
15 . The energy waveguide system of claim 12 , wherein the energy inhibiting structure comprises a baffle structure.
16 . The energy waveguide system of claim 12 , wherein the energy inhibiting structure is positioned adjacent to the first energy waveguide and generally extends towards the first energy location.
17 . The energy waveguide system of claim 12 , wherein the energy inhibiting structure is positioned adjacent to the first energy location and generally extends towards the first energy waveguide.
18 . The energy waveguide system of claim 1 , wherein each waveguide of the array of waveguides comprises a cross-sectional shape of a set of one or more shapes along the transverse plane of the energy waveguide system, the one or more shapes configured to form the tiling across the transverse plane of the energy relay.
19 . The energy waveguide system of claim 1 , wherein the array of energy waveguides are arranged to form a planar surface.
20 . The energy waveguide system of claim 1 , wherein the array of energy waveguides are arranged to form a curved surface.
21 .- 34 . (canceled)