View source for 18263268. METASURFACE, METALENS, AND METALENS ARRAY WITH CONTROLLABLE ANGULAR FIELD-OF-VIEW simplified abstract (The Regents of the University of California)

=METASURFACE, METALENS, AND METALENS ARRAY WITH CONTROLLABLE ANGULAR FIELD-OF-VIEW=


==Organization Name==

[[:Category:The Regents of the University of California|The Regents of the University of California]]


[[Category:The Regents of the University of California]]

==Inventor(s)==

[[:Category:Weijian Yang of Redwood City CA (US)|Weijian Yang of Redwood City CA (US)]][[Category:Weijian Yang of Redwood City CA (US)]]

[[:Category:Junjie Hu of Davis CA (US)|Junjie Hu of Davis CA (US)]][[Category:Junjie Hu of Davis CA (US)]]

==METASURFACE, METALENS, AND METALENS ARRAY WITH CONTROLLABLE ANGULAR FIELD-OF-VIEW - A simplified explanation of the abstract==


This abstract first appeared for US patent application 18263268 titled 'METASURFACE, METALENS, AND METALENS ARRAY WITH CONTROLLABLE ANGULAR FIELD-OF-VIEW

==Simplified Explanation==

The abstract describes a metalens and a metalens array with a bounded angular field of view. The metalens is made up of a substrate and a 2D grid that divides the substrate into a 2D array of meta-units. Each meta-unit includes a nanostructure and a portion of the substrate that supports the nanostructure. The metalens has an angular-dependent transmission or reflection coefficient that decreases with increasing incident angle of illumination. It allows light with incident angles less than a cutoff angle to pass through and rejects light with incident angles greater than the cutoff angle. The metalens can be tiled into a 2D array to create a metalens array with a larger field of view.

* Metalens with bounded angular field of view
* 2D grid divides substrate into meta-units
* Angular-dependent transmission or reflection coefficient
* Passes light with incident angles less than cutoff angle
* Rejects light with incident angles greater than cutoff angle

== Potential Applications ==
The technology can be used in:
* Imaging systems
* Virtual reality and augmented reality devices
* Optical communication systems

== Problems Solved ==
The metalens and metalens array address the following issues:
* Limited field of view in traditional lenses
* Reflection and refraction losses at high incident angles

== Benefits ==
The technology offers the following benefits:
* Increased field of view
* Improved light transmission efficiency
* Compact and lightweight design

== Potential Commercial Applications ==
The metalens and metalens array technology can be applied in various commercial sectors, including:
* Consumer electronics
* Aerospace and defense
* Medical imaging

== Possible Prior Art ==
One possible prior art is the use of diffractive optical elements to manipulate light at different incident angles. Another prior art could be the use of micro-optical components in lens design.

== Unanswered Questions ==

=== How does the metalens array compare to traditional lens arrays in terms of performance and cost? ===
The article does not provide a direct comparison between metalens arrays and traditional lens arrays in terms of performance metrics such as resolution, aberrations, and cost.

=== What are the limitations of the metalens technology in terms of scalability and manufacturability? ===
The article does not discuss the scalability of metalens technology for mass production or potential challenges in manufacturing these complex optical components.


==Original Abstract Submitted==

A metalens and a metalens array having a bounded angular field of view are disclosed. The metalens includes a substrate and a two-dimensional (2D) grid over the substrate to divide the substrate into a 2D array of meta-units. Each meta-unit in the 2D array includes a nanostructure and a portion of the substrate that supports the nanostructure. Moreover, each meta-unit is configured with an angular-dependent transmission or reflection coefficient that decreases with an increasing incident angle of an illumination. Moreover, the metalens passes an incident light having an incident angle less than a cutoff angle and rejects an incident light having an incident angle greater than the cutoff angle. The metalens can be used a base unit for constructing a metalens array by tiling copies of the metalens into a 2D array of the metalens to achieve a significantly larger field-of-view.



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