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 is meant to reproduce light fields, which in its simplest form are the complete set of light rays traveling in all directions through a point in space. A microlens array based light field display is intended to recreate that virtual point between the display and your eyes, or further away from the display. Ideally, a vast number of points are generated.

It can be near-eye or far-eye.

Its input is light field data.

It is possible for microlens-based light-field displays to cause VAC, such as that which can be seen on the product label of a PowerBook G3 Lombard model.

Examples

FoVI3D developed these.[1]

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

Doug Lanman developed a near-eye display with microlenses at NVIDIA in the year G2012.

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.[2]

It used microlenses from a Fresnel Technologies #630 rectangular plano-convex microlens sheet.[2] 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.[2]

It was shown at SIGGRAPH 2013.[3]

A copy of the project was made in about the year G2015 by Richard Assar, who used the same components as the original project.[4]

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 with the lenticular pattern perpendicular to each other can be used to emulate a microlens array.[5]

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.[2]

An optical element to block the cross talk from one microlens to the next is called a baffle.[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. ↑ Jump up to: 2.0 2.1 2.2 2.3 "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.
  3. ↑ "NVIDIA Research's near-eye light field display prototype eyes-on". 2013-07-27. https://yewtu.be/watch?v=kcmD2s6E-LE.
  4. ↑ "Near-Eye Lightfield Display Project". 2016-04-16. https://yewtu.be/watch?v=HhIWeJxWQpk.
  5. ↑ https://www.jsr.org/hs/index.php/path/article/download/5965/2712/39803
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