Lens array-based light field display

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A microlens-based light field display is a type of 3D display that uses a microlens array (MLA) to show a light field. It is a type of light field display.

Its underlying display source can be a microdisplay.

It is meant to reproduce light fields, which in their simplest form are the complete set of light rays traveling in all directions through a point in space, but for a whole lot of points. 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. This was the Nvidia near-eye lightfield display project.

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.[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]

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. ↑ https://www.jsr.org/hs/index.php/path/article/download/5965/2712/39803
  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.
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