165,331
edits
Changes
Jump to navigation
Jump to search
no edit summary
Line 1:
Line 1:
−It can be used to make a [[light field display]].+Thorlabs advertises the sale of microlens arrays as of 2024.<ref name="x003">{{cite web | title=Fused Silica Microlens Arrays | website=Thorlabs, Inc. | date=2014-08-11 | url=https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=2861 | access-date=2024-07-09}}</ref> Thorlabs has claimed that their lenslet arrays are formed using photolithographic techniques.<ref name="x003"/>+A microlens array is used in [[Lytro]]'s cameras.<ref name="w180">{{cite web | title=Lytro Specifications: A Deeper Look Inside | website=LightField Forum | date=2012-11-08 | url=http://lightfield-forum.com/2012/11/lytro-specifications-a-deeper-look-inside/ | access-date=2024-07-09}}</ref>+Microlens arrays have been produced with a distance between microlenses 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 | date=2024-03-06 | url=https://www.youtube.com/watch?v=nyRgcD4VxE8 | access-date=2024-07-09}}</ref><ref name="x003"/>+Microlens arrays can be produced using microfabrication techniques.+
+
+
+
+
+
+
+
+
+
+
A '''microlens array''' is an optical device that has lots of tiny lenses.
+[[File:Microlens Array.jpg|thumb|200px|A lens array in a hexagon pattern]]
+A '''lens array''' is a component of a display that can help to generate a [[light field]]. It consists of [[lens]]es arranged in a pattern or grid. It is a component of [[light field camera]]s and some types of [[light field display]]s.
−Lens arrays translate between angle of light and position of light.
−A lens array is a [[microlens array]] if its lenses are less than 1 millimeter wide.
−Lens arrays can be found in infra-red motion detectors.<ref>https://www.youtube.com/embed/HroJyGDoXI8?t=23</ref>
−A lens array used in integral imaging must have a viewcone size significantly smaller than a human retina in order to solve the [[vergence-accommodation conflict]]. If the viewcone size is more than the width of the retina, the display will only show parallax, and no correct focal cues.
−It may be sold as a "hexagonal lens array".<ref name="s392">{{cite web | title=Hexagonal Lens Array (large) | website=Luximprint | date=2023-10-05 | url=https://www.luximprint.com/product/hexagonal-lens-array-large/ | access-date=2024-09-15}}</ref>
+__NOTOC__
+==Optics==
+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>
−To make a plenoptic microlens based display, each microlens should be at the minimum 200 pixels wide and 200 pixels long.
+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.
+==Manufacturing==
+Lens arrays can be injection molded.
+A lens array can be made from a silicone mold made with 1 mm stainless steel balls. The lens material can be epoxy resin.<ref name="i170">{{cite web | title=Getting A Fly’s-Eye View With Microfabricated Lens Arrays (Comments section)| website=Hackaday | date=2021-09-07 | url=https://hackaday.com/2021/09/07/getting-a-flys-eye-view-with-microfabricated-lens-arrays/ | access-date=2024-09-13}}</ref>
+===Materials===
+* Glass
+* PMMA
+* [[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>
+==Uses==
+Lens array can be found in [[light field camera]]s.<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>
+To make a plenoptic lens based display, each lens should be at the minimum 200 pixels wide and 200 pixels long.
+==Novel==
+It is possible to make a microlens array using [[fresnel lens]]es.<ref>https://holographix.com/wp-content/uploads/2019/01/MLA-Circles-Microlens-Arrays-2-e1548578651299.jpg</ref>
+It is theoretically possible to make a liquid lens array, for example using water droplets.
+It is theoretically possible to make a lens array that has a general curve to it, like on a semisphere.
+A lens array can potentially be made out of a [[holographic optical element]].
+It is possible to make a [[metalens array]].
==References==
==References==
Line 17:
Line 47:
[[Category:Optical components]]
[[Category:Optical components]]
+[[Category:Light field]]
+[[Category:Light field display]]