Difference between revisions of "Lens array"
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It is a flat piece of glass with tiny [[lenslet]]s manufactured into the surface. | It is a flat piece of glass with tiny [[lenslet]]s manufactured into the surface. | ||
| − | A | + | A lens array can potentially be made out of a [[holographic optical element]]. |
They can be made out of [[fused silica]].<ref name="x001">{{cite web | title=Fused Silica Microlens Arrays | website=Thorlabs, Inc. | url=https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=2861}}</ref> | They can be made out of [[fused silica]].<ref name="x001">{{cite web | title=Fused Silica Microlens Arrays | website=Thorlabs, Inc. | url=https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=2861}}</ref> | ||
| − | A | + | A lens array can be found in a [[light field camera]].<ref name="w180">{{cite web | title=Lytro Specifications: A Deeper Look Inside | website=LightField Forum | url=http://lightfield-forum.com/2012/11/lytro-specifications-a-deeper-look-inside/ | access-date=2024-07-09}}</ref> |
Each lens in the array has its own optical axis. However, when the array is viewed as a cohesive unit, the lenses form a shared main optical axis.<ref name="u455">{{cite web | title=Microstructure Lens Arrays | website=Laser Focus World | url=https://www.laserfocusworld.com/directory/finished-optics-coatings-components/lens-arrays/product/14303094/avantier-inc-microstructure-lens-arrays}}</ref> | Each lens in the array has its own optical axis. However, when the array is viewed as a cohesive unit, the lenses form a shared main optical axis.<ref name="u455">{{cite web | title=Microstructure Lens Arrays | website=Laser Focus World | url=https://www.laserfocusworld.com/directory/finished-optics-coatings-components/lens-arrays/product/14303094/avantier-inc-microstructure-lens-arrays}}</ref> | ||
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The side with the roundings should generally face towards the source of the light. In a display, this means that the user's eye faces the flat side of the array, and the underlying display faces the side with the roundings. | The side with the roundings should generally face towards the source of the light. In a display, this means that the user's eye faces the flat side of the array, and the underlying display faces the side with the roundings. | ||
| − | + | Lens arrays can be found in infra-red motion detectors.<ref>https://www.youtube.com/embed/HroJyGDoXI8?t=23</ref> | |
==Manufacturing== | ==Manufacturing== | ||
| − | + | Lens arrays can be produced using microfabrication techniques, in particular photolithographic techniques.<ref>https://patentimages.storage.googleapis.com/ae/55/08/039fdcbd181cb7/US20130033636A1.pdf</ref> | |
| − | + | Lens arrays have been manufactured at the wafer level by [[Lytro]].<ref name="f772">{{cite web | title=Karafin Lytro | website=YouTube | url=https://www.youtube.com/watch?v=6nYXVT0QUkc | access-date=2024-07-14}}</ref> | |
| − | + | Lens arrays have been produced with a distance between lenses of about 125 microns, which is 1/8 of a millimeter.<ref name="u639">{{cite web | title=Plenoptic Cameras: The Future of Imaging | website=YouTube | url=https://www.youtube.com/watch?v=nyRgcD4VxE8 | access-date=2024-07-09}}</ref> | |
| − | To make a plenoptic | + | To make a plenoptic lens based display, each lens should be at the minimum 200 pixels wide and 200 pixels long. |
==References== | ==References== | ||
Revision as of 15:46, 27 July 2024
A lens array is an optical device that has lots of tiny lenses. It can be used to make a light field display.
Lens arrays can be made at different sizes. A microlens array is generally one with each lens less than 1 millimeter wide.
It is a flat piece of glass with tiny lenslets manufactured into the surface.
A lens array can potentially be made out of a holographic optical element.
They can be made out of fused silica.[1]
A lens array can be found in a light field camera.[2]
Each lens in the array has its own optical axis. However, when the array is viewed as a cohesive unit, the lenses form a shared main optical axis.[3]
The side with the roundings should generally face towards the source of the light. In a display, this means that the user's eye faces the flat side of the array, and the underlying display faces the side with the roundings.
Lens arrays can be found in infra-red motion detectors.[4]
Manufacturing
Lens arrays can be produced using microfabrication techniques, in particular photolithographic techniques.[5]
Lens arrays have been manufactured at the wafer level by Lytro.[6]
Lens arrays have been produced with a distance between lenses of about 125 microns, which is 1/8 of a millimeter.[7]
To make a plenoptic lens based display, each lens should be at the minimum 200 pixels wide and 200 pixels long.
References
- ↑ "Fused Silica Microlens Arrays". https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=2861.
- ↑ "Lytro Specifications: A Deeper Look Inside". http://lightfield-forum.com/2012/11/lytro-specifications-a-deeper-look-inside/.
- ↑ "Microstructure Lens Arrays". https://www.laserfocusworld.com/directory/finished-optics-coatings-components/lens-arrays/product/14303094/avantier-inc-microstructure-lens-arrays.
- ↑ https://www.youtube.com/embed/HroJyGDoXI8?t=23
- ↑ https://patentimages.storage.googleapis.com/ae/55/08/039fdcbd181cb7/US20130033636A1.pdf
- ↑ "Karafin Lytro". https://www.youtube.com/watch?v=6nYXVT0QUkc.
- ↑ "Plenoptic Cameras: The Future of Imaging". https://www.youtube.com/watch?v=nyRgcD4VxE8.