Difference between revisions of "Lens array-based light field display"
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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.<ref name="f364"/> | 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.<ref name="f364"/> | ||
| − | Two lenticular | + | Two [[lenticular sheet]]s with the lenticular pattern perpendicular to each other can be used to emulate a microlens array.<ref>https://www.jsr.org/hs/index.php/path/article/download/5965/2712/39803</ref> |
| − | |||
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.<ref name="w353">{{cite web | title= | url=https://research.nvidia.com/sites/default/files/pubs/2013-11_Near-Eye-Light-Field/NVIDIA-NELD.pdf | access-date=2024-07-09}}</ref> | 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.<ref name="w353">{{cite web | title= | url=https://research.nvidia.com/sites/default/files/pubs/2013-11_Near-Eye-Light-Field/NVIDIA-NELD.pdf | access-date=2024-07-09}}</ref> | ||
Revision as of 10:45, 13 September 2024
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]
FoVI3D made displays that tiled underlying flat microdisplays.[1]
Doug Lanman developed a near-eye display with microlenses at NVIDIA in the year +2012.
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 demonstrated at SIGGRAPH 2013.[3]
A copy of the project was made in about the year +2015 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
- ↑ 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. - ↑ 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. - ↑ "NVIDIA Research's near-eye light field display prototype eyes-on". 2013-07-27. https://yewtu.be/watch?v=kcmD2s6E-LE.
- ↑ "Near-Eye Lightfield Display Project". 2016-04-16. https://yewtu.be/watch?v=HhIWeJxWQpk.
- ↑ https://www.jsr.org/hs/index.php/path/article/download/5965/2712/39803