Difference between revisions of "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]].
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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]].
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Its underlying display source can be a [[microdisplay]].
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A microlens array based light field display is intended to recreate a set of virtual points through which rays of different angles of light pass through in front of the user's eyes. Ideally, a high number of points are generated.
  
 
It can be near-eye or far-eye.
 
It can be near-eye or far-eye.
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Its input is light field data.
 
Its input is light field data.
  
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The primary function of a microlens-based light field display is the depth capability. The secondary function is the range of viewpoints.
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The individual lenses are not visible because the array is out of focus.<ref>https://www.youtube.com/watch?v=uwCwtBxZM7g</ref>
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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.
 
__NOTOC__
 
__NOTOC__
 
==Examples==
 
==Examples==
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FoVI3D developed these.<ref name="f364">{{cite web | title= | url=https://www.arch.tamu.edu/app/uploads/2021/10/FoVI3D_DeepDrive.pdf | access-date=2024-07-17}}</ref>
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[[FoVI3D]] developed these.<ref name="f364">{{cite web | title= | url=https://www.arch.tamu.edu/app/uploads/2021/10/FoVI3D_DeepDrive.pdf | access-date=2024-07-17}}</ref> FoVI3D made displays that tiled underlying flat microdisplays.<ref name="f364"/>
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[[FoVI3D]] made displays that tiled underlying flat microdisplays.<ref name="f364"/>
 
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Doug Lanman developed a near-eye display with microlenses at NVIDIA in the year G2012.
 
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===Douglas Lanman's Nvidia near eye display===
 
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[[Douglas Lanman]]'s NVIDIA research publication's display used two Sony [[ECX332A]] OLED microdisplays as the light sources.<ref name="w353"/>
 
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It used microlenses from a Fresnel Technologies #630 rectangular plano-convex microlens sheet.<ref name="w353"/> 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.<ref name="w353"/>
 
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It was demonstrated at [[SIGGRAPH 2013]].<ref name="k223">{{cite web | title=NVIDIA Research's near-eye light field display prototype eyes-on | website=Engadget | date=2013-07-27 | url=https://yewtu.be/watch?v=kcmD2s6E-LE | access-date=2024-07-09}}</ref>
 
  
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A copy of the project was made in about the year G2015 by Richard Assar, who used the same components as the original project.<ref name="b156">{{cite web | title=Near-Eye Lightfield Display Project | website=Richard Assar | date=2016-04-16 | url=https://yewtu.be/watch?v=HhIWeJxWQpk | access-date=2024-07-09}}</ref>
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[[Doug Lanman]] developed a near-eye display with microlenses at NVIDIA. This was the [[Nvidia near-eye lightfield display]] project.
  
 
==Construction==
 
==Construction==

Latest revision as of 19:21, 1 February 2025

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.

A microlens array based light field display is intended to recreate a set of virtual points through which rays of different angles of light pass through in front of the user's eyes. Ideally, a high number of points are generated.

It can be near-eye or far-eye.

Its input is light field data.

The individual lenses are not visible because the array is out of focus.[1]

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[edit]

FoVI3D developed these.[2] FoVI3D made displays that tiled underlying flat microdisplays.[2]

Doug Lanman developed a near-eye display with microlenses at NVIDIA. This was the Nvidia near-eye lightfield display project.

Construction[edit]

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.[2]

Two lenticular sheets with the lenticular pattern perpendicular to each other can be used to emulate a microlens array.[3]

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.[4]

An optical element to block the cross talk from one microlens to the next is called a baffle.[2]

References[edit]

  1. ↑ https://www.youtube.com/watch?v=uwCwtBxZM7g
  2. ↑ Jump up to: 2.0 2.1 2.2 2.3 "Error: no |title= specified when using {{Cite web}}". https://www.arch.tamu.edu/app/uploads/2021/10/FoVI3D_DeepDrive.pdf.
  3. ↑ https://www.jsr.org/hs/index.php/path/article/download/5965/2712/39803
  4. ↑ "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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