Lens array-based light field display

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A microlens-based light field display is a type of 3D display that uses microlenses to show a light field. It is a type of light field display.

It can be near-eye or far-eye.

Its input is light field data.

The primary function of a microlens-based light field display is the depth capability. The secondary function is the range of viewpoints.

Examples

FoVI3D developed these.[1]

Doug Lanman developed a near-eye display with microlenses at NVIDIA in the year +2012.

Construction

A microlens-based light field display is based on an underlying 2D flat panel display. There is a grid of microlenses on top of the display.

Each microlens has multiple pixels underneath it. Each pixel generates a ray that has a unique origin and angle when it comes out of a microlens.[1]

Two lenticular sheets perpendicular to each other can be used to emulate a microlens array.[2]

The spatial resolution of a simultaneous light field display is proportional to the ratio of the microlens focal length to the distance of the display from the eye.[3]

Douglas Lanman's Nvidia near eye display

Douglas Lanman's NVIDIA research publication's display used two Sony ECX332A OLED microdisplays as the light sources.[3]

It used microlenses from a Fresnel Technologies #630 rectangular plano-convex microlens sheet.[3] The microlenses had a focal length of 3.3 millimeters and lens width of 1.0 millimeters. The microlenses were oriented with the planar surface facing the viewer.[3]

It was demonstrated at SIGGRAPH 2013.[4]

A copy of the project was made in about the year +2015 by Richard Assar, who used the same components as the original project.[5]

Details

An optical element to block the cross talk from one microlens to the next is called a baffle.[1]

Examples

FoVI3D made displays that tiled underlying flat microdisplays.[1]

References

  1. ↑ Jump up to: 1.0 1.1 1.2 1.3 "Error: no |title= specified when using {{Cite web}}". https://www.arch.tamu.edu/app/uploads/2021/10/FoVI3D_DeepDrive.pdf.
  2. ↑ https://www.jsr.org/hs/index.php/path/article/download/5965/2712/39803
  3. ↑ Jump up to: 3.0 3.1 3.2 3.3 "Error: no |title= specified when using {{Cite web}}". https://research.nvidia.com/sites/default/files/pubs/2013-11_Near-Eye-Light-Field/NVIDIA-NELD.pdf.
  4. ↑ "NVIDIA Research's near-eye light field display prototype eyes-on". 2013-07-27. https://yewtu.be/watch?v=kcmD2s6E-LE.
  5. ↑ "Near-Eye Lightfield Display Project". 2016-04-16. https://yewtu.be/watch?v=HhIWeJxWQpk.
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